Construction organization project of a business center
Our design company has developed a construction organization project for the business center .
DESIGN OF THE SETTLEMENT
Justification of the adopted organizational and technological scheme,
Defining the sequence of erection of a hotel and office complex, engineering and transport communications, ensuring compliance with the deadlines set in the construction schedule. The technological sequence of works during the erection of the capital construction facility.
Justification of the adopted organizational and technological scheme that determines the sequence of erection of a hotel and office complex with an underground parking lot
Zero cycle" construction to be carried out by open-cut method under the protection of the existing top level of the spreader system.
The scope of work defined by this project implies their performance in the following main stages of construction:
Stage 1: The work of the preparatory period:
- Site planning of the construction site;
- conducting geodetic layout works;
- update general site storage.
Stage 2: the work of the main period:
Works on the construction of the underground part of the hotel and office complex (see sheet 3 of the graphical part):
- Waterproofing over the existing base plate of the complex;
- Concreting of the foundation slab on top of the existing foundation slab of the complex;
- concreting of monolithic structures of the underground part of the complex to 0.000 grade (120,0 m asl).
- Dismantling of the upper tier of the spreader system.
Construction of the above-ground part of the hotel and office complex:
- concreting of monolithic structures of the above-ground part of the complex by means of a tower crane.
- installation of protective scaffolding along the perimeter of the blocks as they are being erected in the areas of hazardous zones;
- construction of elevator blocks;
- roofing;
- finishing works;
- laying of engineering communications, installation and adjustment of technological equipment;
- land improvement.
Operation of the tower crane, as well as places of installation of concrete pumps shall be specified in the work project at the stage of development of working documentation.
The work of the mechanisms to produce according to the schedule of joint work, developed in the project of the works.
Construction of the hotel and office complex is executed in the constrained urban environment, which is characterized (according to МДС 81-35.2004) by
- heavy traffic of urban transport (including streetcar) and pedestrians, dense urban development in the immediate vicinity of the construction site;
- branched network of existing underground utilities, subject to relaying;
- lack of sufficient material storage areas and impossibility to stockpile them on the construction site territory for normal material supply of the working places.
The construction organization design provides for a computer-based restriction of the tower crane's working area.
Works of the preparatory period.
Such preparatory works as installation of the fencing of the construction site, a temporary gallery for pedestrian access, temporary roads for motor vehicles, as well as installation of the amenities were performed in 2006 and are not required at the stage of resumption of construction works, except for the need to update these temporary structures.
Before the start of works the facility must be accepted by the customer from the general contractor for work under the "Act of Readiness of the construction site for execution of special construction works".
Prior to acceptance of the object for work by the customer, the general contractor is not allowed to perform any work at the site. It is allowed to carry out preparatory work at the site in the presence of the warrant.
During the preparatory period it is necessary to:
1. Remove large debris from the construction site. All debris collected shall be taken out of the territory by KAMAZ 55111 dump trucks.
2. The construction site in letters "A-B-B-G-D-E-J-I-K-A" is formed within the existing fence, which is a net inventory of fence on the metal posts and blocks FBS 24.4.6t.
Temporary galleries for pedestrian passage are made of FBS 24.4.6 blocks, wooden flooring, vertical walls of metal stands with Rabita type netting and covered with profiled sheet.
At the exit from the construction site to provide a point of washing the wheels of vehicles with recycled water supply type "Moidodyr", and in winter time a point of cleaning the dirt. In winter, at temperatures below - 5 ° C, the washing station is equipped with compressors for dry cleaning of wheels with compressed air.
4. At the entrance and exit from the construction site to hang posters about the categorical prohibition of access of unauthorized persons to the territory of the construction site;
5. The perimeter of the fence shall be covered with warning and prohibiting signs, information boards and signs according to GOST R 12.4.026-2001, visible both in daylight and at night.
6. 6. Equip the utility rooms with the necessary equipment. For the period of construction, it is prohibited to use the amenities and premises of the complex under construction for accommodation of construction workers.
The amenities should be equipped and operated in accordance with the requirements of Section 12 of SanPiN 2.2.3.1384 - 03 "Hygienic requirements for the organization of construction works and construction works".
Containers shall be installed for garbage collection (a contractor shall sign a contract for their maintenance).
The food of the workers is carried out in huts with delivery of ready-made food to the construction site in sealed containers with the use of disposable tableware.
12. 12. illumination of the construction site and working places according to GOST 12.1.046-85. The project of electric lightning shall be performed by a specialized organization according to the customer's assignment.
According to GOST 12.1.046-85 SSBT illumination should be not less than the rated illumination:
- for roads on the construction site - 2 lux;
- for excavation work - 10 lux;
- for loading and unloading works - 10 lux;
- for installation and finishing works - 30 lux.
Provide the construction with firefighting equipment.
Fire hydrants shall be used for fire-fighting, located in the existing water supply system, at least 3 at a distance of 150 m from the construction site. Fire hydrants are located as follows:
All fire fighting equipment, OP-5 fire-extinguishers, fire alarm system with output of signal to guard post with twenty-four-hour watch.
Responsibility for fire safety during construction is the responsibility of the organization performing construction and installation works at the site.
During the main period the works shall be performed in the following sequence:
- waterproofing over the existing foundation slab of the complex;
- concreting of the foundation slab over the existing foundation slab of the complex;
- concreting of monolithic structures of the underground part of the complex to 0.000 level (120.000 m asl);
- dismantling of the upper tier of the spreader system;
- waterproofing and additional concreting of monolithic structures of the underground part of the complex up to 0.000 height (abn. height 128.800 m) in places of temporary openings for spacer structures;
- concreting of monolithic structures of the above-ground part of the complex with a tower crane (block "A" to Geodetic mark 50.0, block "CS" to Geodetic mark 20.000, block (Geodetic mark Ridge);
- installation of protective scaffolding along the perimeter of the blocks as they are erected;
- assembling the facade elements;
- installation of elevator blocks;
- roofing;
- finishing works;
- laying of engineering communications, installation and adjustment of technological equipment;
- territory improvement.
Arrangement of water dewatering system.
In accordance with the recommendations of the geologic risk assessment report, the construction site, with a 9.0-meter lowering of the foundation, is classified as permanently waterlogged.
The existing dewatering system provides groundwater level lowering in the excavation of the structure and is represented by 4 sump of open drainage. Sumpholes are made of pipes of diameter Øí=630mm, with installed in them pumps GNOM 16-16. Pipes Øn=530mm are welded to the sump #2 and #3. The new foundation slab is being constructed on the existing foundation slab. On most of the excavation, the reinforcement of the foundation slab is exposed.
In accordance with the working draft "Construction water-lowering" code, it is allowed to disconnect and liquidate the sump No.4 before concreting of the slab. Liquidation shall be performed by backfilling with crushed stone or filling with concrete B40 W8 F150.
Disconnection of other dewatering system's sump is to be performed after the output of water shut-off on the whole contour of the structure above the mark 124,000 m and the provision of the structure load against the surfacing, taking into account the calculated groundwater level of 123,800 m.
Under the protection of the weir should be carried out works on joining the waterproofing to the sump, the device of safety stoppers on the perimeter of the sump and the extension of pipes at 0.5 m above the top of the foundation slab.
To enable further expansion of the sump (the last stage of liquidation), there must be installation windows in the floor slabs through which the pipe Ø530mm and concrete mortar will be fed.
In order to avoid uneven pressure on the foundation slab, the disconnection of all the open drainage sumps should be carried out during one work shift. The sequence of disconnecting the cisterns is arbitrary. Work on the pipe buildup Ø530mm to the mark 124,000m should be carried out within less than 1 hour after disconnecting and dismantling the pumping equipment.
When carrying out waterproofing works at all stages, measures are taken to prevent accidental damage to waterproofing materials (temporary protective shields, covering with geotextile, turning up the edge sections).
The sequence of technological operations for the arrangement of waterproofing in the area adjacent to the sump, the build-up and elimination of the sump is determined in accordance with the stages:
Stage I (arrangement of waterproofing):
- Before performing works on liquidation of the sump, dismantle the armature of the foundation slab in the work area (at least 1 m from the edge of the sump);
- Extend the sump with a pipe Øn=530mm to the mark of 120.400m (sump #1, #3) or 120.700m (sump #2). Depending on the elevation of the foundation slab;
- Dismantle the screed protecting the waterproofing;
- Perform installation of PVC waterstops and weld the waterproofing membrane. The length of membrane outlets on the sump pipe must be at least 0.5 m. Pour the protective screed;
- Seal the joint between the waterproofing and the sump pipe. When installing the PVC membrane on the sump pipe, it will need to be cut. The stripped waterproofing is connected in such a way that the cut lines of the vertical and horizontal sections of the waterproofing do not coincide.
Phase II (concreting the sump):
Restore the reinforcement of the foundation slab and perform concreting. Before concreting the baseplate, a 50x50 mm bar capping piece was made;
- After the decision has been made and agreed to disconnect the dewatering system, dismantle the pumps, build up a sump with a pipe Øn=530mm to the absolute mark of 123.000m;
- Perform concreting of the sump by the method of vertically moving pipe. It is not allowed to pour concrete on the water surface.
Stage III (liquidation of the sump):
- Dismantle the embedded elements along the perimeter of the sump pipe;
- Cut the sump pipe to a mark 50 mm below the top mark of the foundation slab;
- Carry out a leveling screed on the concrete surface inside the sump pipe up to the level of its upper edge;
- Perform a stopper made of t=5 mm sheet steel;
- Perform caulking of the foundation slab area with the mortar (sealing compound "Mast-expanding") to the level of its top level.
Installation of waterproofing of the underground part.
ALKORPLAN 35041 is used for waterproofing of highly critical underground structures. Geotextiles are used to protect the fabric from damage.
Foundation slab waterproofing is a multi-layer construction consisting of:
- levelling screed with a thickness of 50mm;
- PVC geomembrane "ALKORPLAN-35041".
- protective screed with a thickness of 40mm;
The waterproofing should be performed in layers on the existing foundation slab, with the metal spikes of this slab pre-cut flush with the concrete.
All layers of the waterproofing mat should be performed in 3-4 m wide trenches.
Unreinforced, opaque geomembrane with a special signal layer, not compatible with bitumen and bituminous materials, does not swell, resistant to prolonged exposure to water, rotting, aging, has a very high level of water resistance even with constant deformation, due to the high deformability and strength of the weld seam well tolerates roughness or deformation of the basis, does not support combustion (flammability group G2). The membrane is not stable under constant ultraviolet irradiation.
When installing the membrane sheets are freely laid by hand with an overlap on the substrate without fastening to the laid surface, the seams are fastened by hot-air welding or wedging.
After laying the geomembranes it is necessary to load them with a protective cement-sand screed from above.
The cement-sand screed is carried out according to the screed beams, the screed layer should be 10 mm higher than the beams.
The waterproofing of the outer walls of the underground part of the complex is a multilayer construction consisting of:
- extruded polystyrene foam 60mm adhesive sealant Bostik 2750 MS
- geotextile of 500-600 g/m2 density
- waterproofing PVC membrane "Alkorplan 35041 2 mm
- geotextile with a density of 500-600 g/m2
Before installing the expanded polystyrene boards, the existing metal surface must be cleaned of rust, the seams grinded and the surface grouted. Then the levelled surface must be cleaned, it must not be covered with oil and must not have any sharp-fingered details.
Waterproofing works are carried out by individual seizures, sequentially, depending on the numbering of seizures and the completion of work on the arrangement of horizontal waterproofing.
The area where waterproofing works are performed and where the necessary materials, tools and equipment are located is considered to be the working area of the waterproofing team. This area must be fenced with signal tape on tripods.
Styrofoam (P35) boards should be laid in staggered order. Fixing of each board should be done with the help of adhesive sealant. The cutting of polystyrene boards should be carried out with a sharp carpenter's knife or a saw with a fine tooth.
The arrangement of each layer of waterproofing is carried out after checking the accuracy of the execution of the relevant layer below, and drawing up an act of certification of hidden work.
Work on the construction of the underground part of the building.
Concrete casting of 800 mm, 1,100 mm and 1,800 mm thick base plates of hotel and office complex (near the elevator core between the axes) is performed after arrangement of waterproofing and protective floor screed.
When constructing foundations, foundation soils must not be allowed to freeze.
The foundation slab should be concreted by segments. The seizure (concreting section) also means the performance of the complete cycle of construction work (reinforcing, formwork, concreting and care of the concrete laid) of monolithic structures.
Working joints in concreting shall be arranged at a distance of not less than 1/3 of the span, as well as in the location of push-pull props in accordance with the working drawings.
Supply of reinforcement, formwork panels and necessary elements for the foundation slab of the building shall be performed using Liebherr tower crane 132 EC-H8.
The concrete mixture is fed into the formwork through concrete pipes by means of a Shwing concrete pump located outside the excavation.
When constructing the monolithic foundation slab, reinforcement meshes made of metal-framed reinforcement are used.
The sequence of works on the concreting area during the arrangement of the monolithic foundation slab
- assembling the spatial framework of the slab with the installation of the protective layer retainers;
- installation and fixing of the props;
- installation of a metal mesh in the position of the construction joint on the boundary of the concreting area;
- installation of the construction joint structure;
- geodetic alignment of the assembled reinforcing frame;
- drawing up a report on the hidden works;
- concreting in layers of 250-300 mm;
- laying, smoothing and compacting the concrete mixture;
- acceptance and compaction of concrete mix shall be performed from the temporary working platforms (running bridges);
- care of fresh concrete: covering the slab and periodic wetting of the surface to ensure the regime of wet concrete curing (in summer) or the device of "greenhouse" (in winter).
Elimination of defects when concreting by segments.
When concreting segments of the slab, with the organization of joints, special attention should be paid to the quality of compaction of concrete mix in the areas of its adjacency to the grids of vertical process joints. This should be done to ensure that there is no gap between the separation grid of the joints and the paved concrete as shown in the figure. If any gaps are left, cut the separating grid during concreting of the adjacent section to make sure the concrete of the new section will adjoin tightly to the "old concrete" (see the diagram in the picture):
Fig. schematic diagram of the elimination of the defect in the technological joint
a - schematic diagram of the joint with an impermissible defect
b - scheme of the joint with the defect repaired
Installation of vertical reinforced concrete monolithic structures of underground part of hotel and office complex can be performed only after projected foundation slab structures are arranged, necessary strength is set (as agreed with the building designer) and after commissioning of permanent works certificate.
Concrete casting of monolithic reinforced-concrete structures shall be performed after acceptance of the formwork, reinforcement and written author's permission in the works register.
Erection of monolithic structures (lifting and moving of reinforcement, formwork and other cargo) of the underground part shall be performed by means of Liebherr 132 EC-H8 tower crane, installed on the foundation slab of the building under construction.
Concrete structures shall be concreted using a tower crane, a bucket with a guide trough and a concrete pump.
Installation of monolithic ceilings.
Perform monolithic intermediate floor slab in inventory formwork with a system of support from the inventory telescopic struts (install the formwork in accordance with the certificate of the formwork manufacturer).
For the execution of works on concreting of the slabs, the concreting area shall be divided into sections equal to the daily supply of concrete. In case of an interruption in concreting, install the metal mesh with a mesh size of 4x4 mm in the places of working joints along the flat cages. Fix the metal mesh with the tying wire to the working reinforcement. Concreting is performed for the entire thickness of the slab with simultaneous compaction of the concrete mixture by the deep vibrators with subsequent leveling by the vibrating rail. In accordance with the working drawings, the openings in the chord locations shall be concreted after their dismantling.
Concrete is poured using Liebherr 132 EC-H8 tower crane (hook outreach 50 m) in buckets with a guide trough and concrete pumps.
Concrete casting shall be performed after acceptance of the formwork, reinforcement and written permission of the supervisor in the worksheet.
The height of fall of the concrete mixture when placing it in the monolithic structures must not exceed 1 m.
The formwork shall be removed in accordance with the regulations and the project for the concrete work, developed by a specialized organization, as instructed by the customer.
Installation of monolithic columns.
Perform concreting of the columns without interruption in the following order:
- install and secure the reinforcement;
- install and secure the formwork panels to the full height of the column with a hinged platform attached to the formwork;
- concreting the columns by a bucket or with the help of concrete pumps;
- the columns shall be concreted in 1.5 m high tiers, with breaks for the concrete mixture settling. The duration of the break must be at least 40 minutes and not more than 2 hours. Consolidate the concrete mixture with the deep vibrators.
The work on installation of the reinforcement shall be performed from the mobile towers. Shields of formwork should be delivered to the place of installation by means of Liebherr 132 EC-H8 tower crane with 50 m boom.
The inventory formwork should be installed in accordance with the certificate and instructions of the formwork supplier.
Perform concreting of the columns from the platforms or hinged platforms fixed to the formwork panels.
Concreting the walls of the stairwells shall be performed in the inventory formwork.
Installation of the external stair cell wall formwork shall be performed from the towers installed on the monolithic reinforced concrete slab, the internal formwork panel - from the decks laid on the inventory telescopic struts, the struts shall be installed on the stair flights and platforms of the floor below.
Concreting walls shall be performed from the platforms or hinged platforms, fixed to the formwork shields or from the touring towers.
Install and fix the stairway wall formwork panels according to the instructions of the formwork supplier.
Concreting of interior walls shall be performed in the inventory formwork. When concreting the walls, the height of the sections to be erected without interruption shall not exceed 3 meters.
When supplying concrete mixture from a height of more than 2 meters when concreting with a bucket, use chain trunks.
Concreting walls must be done in the following order:
- install external formwork panels to the full height of the floor wall;
- set up and secure the reinforcement;
- set up the internal boards of formwork to the full height of the storey wall;
- fix the formwork with tie rods and push-pull props;
- Concrete the walls with a tower crane, a bucket with a guide trough or a concrete pump.
Formwork work.
Wall formwork installation shall be carried out in accordance with the instructions of the supplier.
The formwork panels are transported by Liebherr 132 EC-H8 tower crane.
The installation of the formwork panels in places not provided by the tower crane (overlapping area in close proximity to the mounted scaffolding with protective screen) should be performed manually and by means of small-scale mechanization.
Panel formwork installation shall be started with the laying of beams along the entire contour of the structure to be concreted. The inner edge of the batten shall coincide with the outer edge of the wall to be concreted. Wall formwork is installed in two steps: firstly, install the formwork of one side of the wall, and after installing the reinforcement, install the formwork of the second side.
Before the installation of the formwork, a temporary fence shall be installed around the perimeter of the above-ground part of the towers on the slab.
The condition of the installed formwork shall be continuously monitored during concreting. The verticality of movement can be controlled in various ways: by means of plumbbars of special design, vertical design devices, etc. In case of unforeseen deformations of individual elements of the formwork or unacceptable opening of slots, additional fasteners should be installed and the deformed places should be corrected.
The formwork should be torn off from the concrete with the help of jacks. The use of tower cranes for tearing off the formwork panels is prohibited.
Remove the formwork in accordance with the rules of concreting and the PPR for concrete work.
After removal of the formwork it is necessary to:
- make a visual inspection of the formwork elements;
- clean all the elements of the formwork from the adhered concrete;
- lubricate the surface of the decks and screw connections;
- make sorting of formwork elements.
Stone work.
The outer walls of the complex under construction are a multi-layer structure consisting of:
- brick wall (blocks) with a thickness of 250mm;
- heater Rockwool thickness of 150mm;
- The facing of the ventilated facade system with steel plates or glass panels on a 100mm subsystem.
The masonry of the external walls is carried out on mortar.
All masonry operations shall be carried out manually. The masonry process shall be performed in tiers 1.1-1.2 m high. For high walls, the masonry shall be performed from the hinged platforms.
The masonry process shall be carried out in the following order:
- setting up the stacking;
- pulling the piers;
- Mixing of the mortar in the box;
- feeding of the mortar to the wall and spreading;
- feeding and laying out the blocks on the wall;
- Checking the correctness of the laid masonry and grouting the joints.
The technological process of facing consists of:
- Sorting of cladding products;
- Preparation and layout of the surfaces to be cladding;
- Preparation of anchors for fixing the facing products;
- cladding works.
Cladding products of steel or glass panels must be pre-prepared for work, grooves and sockets for fastening are made, sorted and marked.
Wall cladding begins with corner and beacon slabs.
Facing of exterior walls and facade structures shall be performed in accordance with the working drawings from the scaffolding after specifying the grades and types of structures used (measures for work on the scaffold to develop in separate technological charts and PPR).
Welding work.
Welding works are managed by a person who has the permission for carrying out this type of works.
During the welding works it is necessary to meet the requirements of the fire safety regulations of the Order No.390 "Fire Safety Regulations in the Russian Federation" and POTP RM-020-2001 "Inter-industry Labor Safety Regulations for Electric Welding and Gas-Welding Works".
When carrying out electric welding works in the open air, shelters shall be installed over the units and welding stations from incombustible materials. If there is no awning, electric welding work shall be discontinued in the rain.
Electric welders shall have a qualification group of at least II in electrical safety.
All work on the erection of the building shall be carried out under the work project developed by a specialized organization for all phases of construction.
Roofing work.
The roofing of the buildings of the complex under construction is a multi-layer construction which consists of:
- vapor barrier thickness of 5mm;
- insulation from extruded polystyrene foam thickness of 150mm;
- gradient layer (cement-sand screed) 30-170mm thick
- waterproofing mat with a thickness of 2-4mm;
- a geotextile separating layer of roll-fed material 2-4mm thick;
- loading gravel drainage layer with the thickness of 50mm;
- concrete paving tiles 40mm thick.
Before laying the roll mats, the substrate should be prepared by cleaning it from contamination with compressed air.
Rolled materials shall be laid manually.
Rolled roofs perform grabs in the direction from low-lying to high-lying places with the arrangement of the sheets perpendicular to the water runoff.
Cross-layering of roll mat layers is not allowed. Roll roofing mat can be glued as with the alternate sticking of each layer, and simultaneously in several layers. The method of gluing is developed in the PPR after specifying the types and grades of materials used.
The distance between the joints along the length of the sheets in adjacent layers should be at least 300 mm.
After the loose laying of the waterproofing mat (ROCmembrane), overlaps should be reinforced with fiberglass fabric and covered with a protective reinforced screed.
Installation of each element of the roof insulation, protective and finishing coatings are performed after checking the accuracy of the execution of the underlying layer with the composition of the certificate of certification.
Installation of external networks
Works on laying the outdoor networks during the construction of the hotel and office complex are performed in accordance with individual manufacturing projects on these types of work.
Before laying (relaying) external utility lines, it is necessary to specify the location and depth of the existing communications.
The following technological rules shall be observed when performing excavation work for laying utilities:
- each engineering network along its length is divided into appropriate sections, the initial and final points of which are wells or chambers (specified in the project of works according to the working drawings);
- development of trenches begins from the place of connection to the utility network;
- engineering networks of deeper embedment are performed with an advance in relation to communications of the next level of embedment.
Excavation in the trench at the intersection with underground utilities is permitted with the written permission of the operating organization of this network. For diagrams of intersections with existing networks, see the typical solutions of Mosinzhproekt Institute.
Engineering communications shall be connected to the supply networks as the hotel and office complex is put into operation.
Backfill to produce sandy soil with layer-by-layer compaction of sand by pneumatic tampers.
Engineering communications laying to carry out with truck crane KS-5473.
Fire safety requirements
This section of the draft reflects the main organizational measures that ensure fire safety during the construction of a hotel and office complex with an underground parking lot
Concrete decisions (architectural, constructive, engineering solutions) concerning fire safety of the object are given in the relevant chapters of the project.
Fire precautionary measures are provided by the building contractor.
During the construction and installation works it is necessary to strictly follow the specifications and rules for construction and installation works and acceptance of construction and installation works, as well as "Fire safety rules of the Russian Federation". Resolution № 390.
In accordance with the RF Federal Law "On Fire Safety" to fulfill the following measures:
- living quarters located on the territory of the construction site (see construction plan sheet 1) shall be equipped with OP-5 fire extinguishers, smoke detectors and fire alarms connected with the guard post;
- at the entrance to the living quarters is installed shield with fire-fighting equipment;
- the construction company is responsible for fire safety during the construction period;
- fire protection measures at the construction site shall be provided by the construction company as directed by the fire department serving the area;
- to equip fire stations with a place for smoking, and equipping them with fire extinguishing means;
- living quarters are provided with two evacuation exits and metal stairs for descent and passage to the second floor;
- at every entrance to the construction site to install a plan of fire protection in accordance with GOST 12.1.114-82, (with marked under construction and auxiliary buildings and structures, entrances, driveways, location of hydrants, fire extinguishing means and communications);
- The gates for the entrance shall be not less than 6.0 m wide. Cluttering of entrances, driveways, entrances and exits to buildings, as well as the approaches to firefighting equipment, equipment, hydrants and means of communication shall be prohibited;
- access roads shall be in good working order;
- The water consumption for firefighting is 110 l/sec according to the Table 1 of SP 8.13130.2009 "Fire protective systems. Sources of external fire-fighting water supply. Fire Safety Requirements". Fire extinguishing equipment (fire hydrants, pressure and suction hoses, nozzles, etc.) shall ensure the possibility of supplying fire extinguishing agents to the place of fire at the required discharge and working pressure necessary for suppressing the fire in accordance with the fire fighting tactics and the access of fire-fighting personnel to the buildings and structures (FZ RF of 22 July 2008 N 123-FZ "Technical Regulations on Fire Safety Requirements" Art. 126. General requirements to fire-fighting equipment);
- Do not allow combustible building materials to be stored without observing fire breaks;
- Organize round-the-clock fire protection of the facility.
Fire safety at the construction site, work sites and workplaces must be ensured in accordance with the requirements of the Russian Federal Law No. 123-FZ of July 22, 2008 and Decree No. 390 "Fire Safety Regulations in the Russian Federation".
Storage of gas cylinders on the construction site is not provided. Gas cylinders shall be delivered to the construction site as required in the amount of the daily need.
Before you start welding, it is necessary to check the serviceability of the welding transformers, insulation of wires, hoses, generators, as well as the tightness of the contact joints.
It is forbidden to store fuels and lubricants on the site. Accidentally spilled oil products on the ground must be covered with sand, and soaked sand and oily materials should be collected in metal boxes with tightly closing lids in intrinsically safe design and at the end of the day's work should be removed from the construction site (with the subsequent disposal). All used oil that is replaced should be collected in sealed containers and returned for recycling.
When refueling the construction machinery (mobile crane, diesel generator, etc.) the requirements of GOST 12.1.004-91* SSBT shall be observed. Fire safety. General requirements and requirements of the "Fire safety rules in the Russian Federation. Resolution № 390.
The construction site and the hotel and office complex building under construction should be kept clean at all times.
All construction materials made of wood, in summer time shall be impregnated with a fire retardant composition.
When storing and working with adhesives, mastics, bitumen, polymer and other combustible materials the requirements of the Federal Law of the Russian Federation dated July 22, 2008 N 123-FZ "Technical Regulations on Fire Safety Requirements", Decree № 390 "Fire Safety Regulations in the Russian Federation" shall be observed.
Welding and other hot work connected with the use of naked flame must be carried out in strict accordance with the requirements of the Federal Law of the Russian Federation dated July 22, 2008 N 123-FZ "Technical Regulations on Fire Safety Requirements", the Decree № 390 "Regulations on the Fire Safety Regime in the Russian Federation".
The installation and operation of temporary electrical networks and electrical installations shall be performed strictly in accordance with the "Electrical Installations Regulations (ПУЭ)", "Regulations for technical operation of electrical installations by consumers" (ПТЭ), and the requirements of the RF Federal Law N 123-ФЗ dated July 22, 2008 "Technical Regulations on Fire Safety Requirements", Decree № 390 "Fire Safety Regulations in the Russian Federation".
Do not use non-standard (homemade) electric heaters, use uncalibrated fuse links or other homemade devices for overload and short-circuit protection, as well as operate wires and cables with damaged or lost protective properties of the insulation.
Installation and operation of heating and drying systems in premises shall be carried out in strict accordance with the "Fire Safety Rules of the Russian Federation".
General instructions for work in the winter period.
Before the onset of the period of sub-zero temperatures of the outside air the following main organizational measures shall be taken
- The necessary amount of thermal insulation materials shall be delivered to the construction site and their storage shall be arranged.
The main construction processes (monolithic reinforced concrete structures, bricklaying, welding, etc.) should be performed in accordance with the general contractor's project of works, taking into account the provisions of the SNiP, which determine the organization, execution and acceptance of work at low outside temperatures (see: 70.13330.2012, paras. 2.53-2.62; paras. 7.57-7.75; paras. 8.7, 8.8, 8.20-8.24).
The instructions for working in winter conditions shall be observed at an average daily air temperature below +5°C and a minimum daily temperature below 0°C, as well as in thawing conditions.
Particular attention must be paid to welding work in winter time, such defects as non-sparking, burning, etc. - are unacceptable.
Brickwork in winter should be carried out on mortars of grade 50 with antifreeze additives. If necessary, bricks shall be installed over the masonry.
When doing masonry work, it is necessary to ensure that the joints are tied together. Masonry of all structures of the same tier should be done on the mortar of the same composition, consistency and temperature. To maintain a positive temperature of the mortar, use aggregates of various designs. Mortar boxes at the workplace should be insulated and equipped with lids. Working on frozen mortar is prohibited. Bricks should be delivered to the workplace in small batches, based on the work of 1-2 hours. Use injection burners to remove ice from bricks. The burner not only removes ice from the brick, but also heats the masonry pastel.
Conducting roofing work in the winter is allowed at an outside temperature of 25 °. Before laying, roll roofing materials are kept in a warm room and heated to a positive temperature, and delivered to the place of laying in insulated containers. The basis for the device device roofing should be cleared of ice, snow and must be dried. Installation of PVC membranes as the waterproofing of the underground part is allowed at ambient temperatures not below minus 25 ° C.
The arrangement of waterproofing from Alkorplan 35041 PVC membranes during the winter period is similar to the arrangement of waterproofing during the summer period. Before hot-air welding of rolls it is necessary to clean (blow off) the surface of the seams with a portable inventory compressor.
Waterproofing materials should be stored in a dry room.
When storing structures to prevent the formation of ice on them to use high pads, as well as measures to protect the structures from getting wet from the top and the ice-covering of the jointed surfaces.
All passages, passageways and workplaces must be systematically cleared of snow and ice, sprinkled with sand, ash or sifted slag.
Places of storage of materials and structures must also be cleared of snow and ice to prevent the collapse of the stacks during the thaw.
All mechanisms on the construction site must be lubricated with winter lubricants.
During installation work, all elements and structures must be cleared of snow and ice before lifting. Clean the lower surfaces of the structures on special trestles.
Particular attention should be paid to the serviceable condition of the guardrails and walkway bridges.
Before the start of work of each shift, all decks and ladders shall be cleared of snow and ice and sprinkled with sand, the serviceability of fences shall be checked.
It is prohibited to work in ice, thunderstorms, fog, heavy snowfall and wind speed of 12 m/s or more.
It is prohibited to tear off frozen materials with the help of a hoisting (tower or truck) crane.
Production facilities at the construction site shall be insulated, provided with heating, ventilation devices, equipped with vestibules. During severe frosts should be organized breaks in the work.
List of types of construction and installation work, critical structures
Sections of the engineering networks to be inspected with the drawing up of acts of acceptance prior to the execution of subsequent works and installation of subsequent structures.
Covert work is subject to certification with the acts compiled in the form established by SP 48.13330.2011 "Organization of Construction" (Revised edition of SNiP 12-01-2004 "Organization of Construction").
The certificate of certification of hidden work must be made for the completed process, performed by an independent subdivision of the executors.
Certification of hidden works and drawing up a certificate in cases where the subsequent work must begin after a break, should be made immediately before carrying out the subsequent work.
It is forbidden to perform subsequent work in the absence of the certificate of inspection of the preceding hidden works in all cases.
Responsible structures as soon as they are ready are subject to acceptance during construction (with the participation of a representative of the design organization or field supervision) with the drawing up of an act of intermediate acceptance of these structures in the form established by SP 48.13330.2011 "Organization of Construction".
The list of certificates of hidden works, structures, network sections, as-built geodetic diagrams, as-built drawings, test documents on the presented technological checking stages or on the whole facility.
Erection of the underground part of the hotel and office complex:
- Elements of the dewatering system, drainage;
- waterproofing of the foundation;
- waterproofing of the building envelopes;
- natural and artificial foundations;
- welded joints, design bolted and anchored joints, ties;
- installation of reinforcement cages;
- arrangement of monolithic reinforced concrete structures;
- temperature, expansion joints;
- Preparation of surfaces (priming, screed, leveling, underlayment);
- Anticorrosive protection of steel structures;
- corrosion protection of welded joints;
- antisepsis, fire protection (wooden structures of parts);
- waterproofing, vapor barrier, soundproofing;
- installation of technical networks and equipment;
Erection of the above-ground part of the hotel and office complex:
Act of certification of hidden works
- erection of reinforcing cages;
- installation of monolithic structures;
- Deposition, expansion, anti-seismic joints;
- Preparation of surfaces (priming);
- insulation of external enclosing structures (walls, coatings);
- corrosion protection of welded joints;
- antisepsis, fire protection (wooden structures of the parts);
- waterproofing, vapor barriers, soundproofing (external (enclosing), internal structures of walls, floor, sanitary units, balconies, roofing);
- arrangement of steel and glass panel facades;
- fixing and insulation of partitions of window and door frames, etc;
- roll roofing (an act is made for each layer).
Monitoring of building settlement during construction:
- acts of testing of building structures in cases stipulated by the design documentation and the requirements of technical regulations (norms and rules).
- The executive geodesic diagrams (in plan and height) for the elements, structures and parts of the building.
- executive working drawings of the project.
During the construction of the hotel and office complex the following is required:
- Keep a general work log, special logs for certain types of work the list of which is set by the general contractor in agreement with the subcontractor and the customer and the design organizations log of field supervision (welding log, log of field supervision of the construction, log of the entry accounting and quality control of received parts, materials, structures and equipment, log of the crane driver;
- draw up certificates of certification of hidden works, intermediate acceptance of critical structures, testing and testing of equipment, systems, networks and devices;
- Draw up other production documentation provided for by SNiP for certain types of work and as-built documentation - a set of working drawings with notes on conformity of the work performed in nature to these drawings or changes made in them in agreement with the design organization, by the persons responsible for the construction and installation work.
- To set up automatic stations during the construction to monitor the condition of the erected structures both underground and above-ground parts of the complex.
- To organize quality control of an object during construction with compulsory drawing up of the list of defects of constructions made in situ, with the indication of measures for their quick and qualitative correction.
Proposals to ensure quality control of construction and installation work, as well as supplied to the site and mounted structures and materials.
Contractors are fully responsible for the quality of materials, products and structures used and for the quality of construction and installation works during the construction of the multifunctional complex. For the quality control of all kinds of work during the erection of the complex, it is recommended to have a permanent specialized service.
In addition to the control services prescribed by regulatory documents, a multilevel system of quality control is provided at all stages of construction: on the part of the customer (investor), contractor, administrative bodies.
During the incoming inspection of materials, their compliance with standards, availability of certificates of conformity, hygienic and fire safety documents, passports and other supporting documents are checked.
When controlling the quality of construction materials, the customer-developer must be guided by:
- state and departmental standards;
- technical specifications, developed by the Ministries and enterprises-manufacturers of building materials, which are registered in Gosstandart of the Russian Federation;
- The relevant chapters and sections of SNiP.
Building materials, products, structures and equipment should meet the requirements of relevant standards, specifications and working drawings.
Replacement of construction materials, products, structures and equipment envisaged by the project shall only be allowed by agreement with the design organization and the customer.
In the course of construction and installation and special works it is necessary to control the availability of hygienic certificates for the products arriving at the construction site.
When controlling the quality of products is checked: appearance, geometric dimensions, compliance with passport data.
The quality of supplied materials and products, quality of work performed by the production control, which includes input, operational and acceptance control.
Operational control is carried out systematically:
- on a daily basis by the operations supervisor;
- selectively by the designer's supervision by a representative of the design organization.
Organization of production control.
In the course of construction and erection works and special operations in erection of a hotel and office complex the fulfillment of measures and requirements of production-engineering and design-engineering documentation, operational documentation for construction machines, mechanisms and tools, specifications and State Standards on construction materials and products on the issues of environmental safety and sanitary-hygienic norms are executed.
During the whole construction process of the complex the incoming inspection of construction materials, products and engineering equipment is performed. Both domestic and imported materials are checked.
To the acceptance commission on acceptance and commissioning of the object one presents the sanitary-ecological passport of construction production, which is the final document of ecological supervision over construction and includes the documents fixing the values of ecological parameters at different stages of construction.
Drawing up of sanitary-ecological passport of construction products is executed by organizations having a license for this kind of activity.
Production control.
In accordance with existing sanitary regulations the construction administration shall carry out production control of compliance with sanitary regulations:
- Compliance with sanitary requirements of the structure and contents of the facility;
- Compliance of technological processes and equipment with normative and technical documents on providing optimal working conditions at each work place;
- Compliance with sanitary rules for the maintenance of premises and territory of the object, conditions for storage, application, transportation of substances of different hazard classes, toxic chemicals;
- compliance of parameters of physical, chemical, physiological and other factors of the working environment with optimal or permissible norms at each workplace;
- provision of workers with means of collective and individual protection, protective clothing, amenities and their use;
- Development and implementation of health improvement measures to improve working conditions, everyday life, recreation of workers, for the prevention of occupational and occupational diseases;
- Organization and conduct of preventive medical examinations, implementation of measures based on the results of examinations;
- Determination of contingents subject to preliminary and periodic medical examinations, photofluorographic examinations, etc., participation in the formation of plans for medical examinations;
- Correctness of employment of workers (according to the conclusion of LPU);
- Correctness of organization of preventive nutrition, medical and preventive and recreational procedures (for example, when working with vibration tools, straining of the visual organs, etc.).
The frequency of production control, including laboratory and instrumental studies and measurements, is planned in accordance with the requirements of the current regulatory documents.
Operational quality control of soil compaction works using self-propelled rollers shall include:
- incoming inspection of working documentation and materials;
- operational control of individual construction processes or production operations;
- assessment of conformity of the work performed.
During the incoming inspection of the working documentation, its completeness and adequacy of the technical information contained therein for the performance of work must be checked.
Quality control when concreting structures.
arrangement of horizontal waterproofing of foundations
Stages of work Controlled operations
Preparatory work Check the following
- availability of a certificate of inspection (acceptance) for the work performed earlier (leveling layer);
- Cleaning of the foundation from dirt, snow, ice.
Installation of Voltex roll mats Check:
- thickness and evenness of the insulation layer;
- The size of overlaps between the rolls to be laid;
- correctness of maintenance of the laid layer of waterproofing.
Acceptance of the work performed Check:
- Quality and integrity of the insulation surface;
- Adherence to the size of overlapping of rolls;
- Correctness of insulation arrangement in the joints.
Entrance and operational control shall be performed by: foreman (foreman), engineer (laboratory assistant) - during the works. Acceptance control shall be performed by: quality control service employees, foreman (foreman), representatives of the technical supervision of the customer.
Installation of monolithic reinforced concrete foundations and slabs
Stages of work Controlled operations
Preparatory work Check:
Stages of work Controlled operations
Preparatory works Check:
- Availability of a quality document on the formwork;
- Availability of the production plan for the installation and acceptance of the formwork;
- Availability and condition of the fasteners and means of support.
Assembling the formwork Inspect:
- compliance with the order of assembly of the formwork panels, installation of fasteners, scaffolding, embedded elements;
- the tightness of connection of the formwork shields with each other and with the previously laid concrete;
- observance of geometric dimensions and design inclinations of the formwork planes;
- reliability of fastening of the formwork panels.
Acceptance of the formwork Check:
- compliance of the geometric dimensions of the formwork with the pro-ject ones;
- the position of the formwork relative to the breakdown axes in the plan and vertically, including the design elevations of the top of the structure to be concreted inside the surface of the formwork;
- correctness of installation and reliability of fastening of plugs and embedded parts, as well as the entire system as a whole.
Operational control is performed by: foreman (foreman), geo-designer - in the course of work.
Acceptance control is to be made by: quality control service workers, foreman (foreman), engineering supervision representatives of the customer.
Reinforcing works
Stages of work Controlled operations
Preparatory work Check:
availability of quality document;
- The quality of the reinforcement (if necessary, carry out the required measurements and sampling for testing);
- The quality of preparation and marking of the supporting base;
- Correct installation and fixing of the formwork.
Installation of reinforcement products Control:
- procedure for assembling the elements of the reinforcing frame, quality of performance of welding (tying) of the frame units;
- Accuracy of installation of reinforcing bars in the plan and height, the reliability of their fixation;
- the size of the concrete protection layer.
Acceptance of the performed work Check:
- correspondence of the position of the installed reinforcing elements to the design ones;
- The size of the concrete protection layer;
- Reliability of reinforcement items fixing in the formwork;
- quality of welding (tying) of the frame units.
Operational control shall be performed by: master (foreman).
Acceptance inspection is performed by: quality control workers, foreman (foreman), representatives of the technical supervision of the customer.
Concrete mixes placement
Stages of work Controlled operations
Preparatory work Check:
- availability of acts on previously performed hidden works;
- Correct installation and secure fastening of the formwork, supporting struts, fasteners and scaffolding;
- preparedness of all mechanisms and devices, providing production of concrete works;
- cleanliness of the foundation or previously laid concrete layer and the inside surface of the formwork
- availability of lubricant on the inner surface of the formwork;
- condition of reinforcement and embedded parts (presence of rust, oil, etc.), compliance of the position of the installed reinforcement with the design;
- drawing the design mark of the top of concreting on the inner surface of the formwork.
Laying of concrete mix, concrete hardening
Concrete curing, demoulding Checking:
- quality of the concrete mixture;
- Condition of formwork;
- Height of dumping of concrete mixture, the thickness of imposed layers, the step of repositioning of deep vibrators, the depth of their immersion, the duration of vibration, the correct execution of the working joints;
- temperature-humidity conditions of concrete hardening in accordance with the requirements of the PPR;
- the actual strength of concrete and timing of demoulding
Acceptance of the performed work Check:
- The actual strength of the concrete;
- The quality of the surface of the structure, its geometric dimensions, compliance with the design position of the entire structure, as well as holes, channels, openings, embedded parts
Operational control is performed by: foreman (foreman), laboratory post engineer - in the course of work performance. Acceptance control shall be performed by: quality control service employees, foreman (foreman), technical supervision representatives of the customer.
Installation of vertical monolithic reinforced concrete structures of the complex framework
Stages of work Controlled operations
Preliminary work Check:
- Presence of the acts on the previously performed hidden works;
- Check: Is the formwork, supporting elements (push-pull props), fasteners and scaffolding properly installed and securely fastened?
- preparedness of all mechanisms and devices to ensure the production of concrete works;
- cleanliness of the foundation or previously placed concrete layer and the inside surface of the formwork;
- condition of reinforcement and embedded parts (presence of rust, oil, etc.), compliance of the position of the installed reinforcement with the design;
- laying the design elevation of the top of concreting on the inner surface of the formwork panels.
Laying of concrete mixture, concrete hardening, stripping Control:
- quality of the concrete mixture;
- Condition of formwork;
- Height of dumping of concrete mixture, the thickness of layers being placed, the rate of repositioning of deep vibrators, the depth of their immersion, the duration of vibration, the correctness of the working joints;
- temperature-humidity conditions of concrete hardening;
- the actual strength of concrete and timing of demoulding.
Acceptance of the work performed Check:
- the actual strength of the concrete;
- Actual strength of the concrete; - Quality of the surface of structures;
- Quality of the materials and products used in the construction;
- Geometric dimensions, compliance of the structure with the working drawings.
Operational control is performed by: foreman (foreman), laboratory post engineer, geodesist - in the course of work performance. Acceptance control shall be performed by: quality control service employees, foreman (foreman), technical supervision representatives of the customer.
All the structures and their elements to be closed during concreting (prepared bases of structures, reinforcement, embedded items, etc., as well as the correct installation and fixing of the formwork and its supporting elements) shall be accepted and documented by the certificate of acceptance of hidden works. Acceptance of the structures shall be documented in accordance with the established procedure by the act of certification of the hidden works or the act of acceptance of critical structures.
Each batch of concrete mixture must have a quality document, which includes the following indicators:
- the name of the superior organization;
- the manufacturer;
- consumer;
- Date and time of shipment of concrete mixture;
- type of concrete mixture and its designation;
- number of composition of the concrete mixture;
- class or grade of concrete in terms of compressive strength at the age, days;
- grade or grade of concrete in flexural tensile strength;
- coefficient of variation of concrete strength;
- the required strength of concrete;
- the design mark of the average density (for lightweight concrete);
- maximum aggregate size;
- workability of the concrete mixture at the point of placement, see the accompanying document number;
- number of the accompanying document.
Acceptance of the completed structures hotel and office complex shall be implemented to verify their quality and preparation for the next types of work and issued in the prescribed manner act.
The acceptance of the structures shall include:
- inspection of the structures, including control measurements and, if necessary, control tests;
- inspection of all documentation related to the acceptance and testing of materials, semi-finished products and products which were used in the construction of these structures, as well as verification of the acts of intermediate acceptance of work;
- The presence and compliance with the project of openings, openings, channels, expansion joints, embedded parts, etc.
The acceptance of mounted reinforced concrete structures of the underground and above-ground parts of the hotel and office complex should be documented by the Act of acceptance of critical structures in accordance with SP 70.13330.2012. Code of Practice. "Bearing and Enclosing Structures".
Admissible deviations in the size and position of the executed constructions (table 11 of СП 70.13330.2012)
The size of permitted deviations Control (method, volume, type, registration)
1 The deviations of the intersection plane lines from the vertical or design slope for the full height of the structures for:
walls and columns supporting monolithic coverings and per-roofing
15 mm Measuring, each structural element, work log.
2 Horizontal plane deviations for the whole length of the alignment site 20 mm Measuring, not less than 5 measurements for every 50-100 m, the work log.
3 Local unevenness of the concrete surface when checking with a two-meter stick, except for the supporting surfaces 5 mm Same
4 Length or span of elements 20 mm Measuring, each element, work log
5 Size of the element cross-section + 6 mm
- 3 mm Same
6 Marks of the surfaces and embedded parts that serve as supports for steel or reinforced concrete columns and other elements - 5 mm Measuring, each supporting element, the executive scheme
7 Height differences of the marks on the joints of two adjacent surfaces - 3 mm
Suggestions for setting up a geodetic and laboratory control service. Instructions about the methods of instrumental quality control of the building.
During erection of constructions of the hotel and office complex, the construction company must perform instrumental geodetic control of the accuracy of the geometric parameters of the erected constructions of both underground and above-ground parts of the complex.
Instrumental control during construction of a building includes geodetic work in the following phases:
- laying out and transfer of new axes (location of new axes of the complex does not coincide with the old ones);
- marking of reference marks;
- field surveys.
In the process of construction geodetic control of the accuracy of construction and installation work is as follows:
- instrumental inspection of the actual position in plan and height of the building structures and utilities in the process of their installation and temporary fixing of geodetic base points in kind;
- execution survey of the actual position of the installed structures, parts of the building, utilities in the plan and height (horizontality, coaxiality, displacement of planes, the correct position of the embedded parts).
The external network of the building should be created in the form of a geodesic network, the points of which fix on the ground the main (main) breakdown axes, as well as the corners of the building formed by the intersection of the main breakdown axes.
The levelling network of the construction site and the external network of the building must be created in the form of levelling passages supported by at least two reference points of the geodetic network.
As a rule, the points of levelling and planning axes must be combined.
Construction of the geodetic base for the construction of the hotel and office complex should be carried out by triangulation methods, polygonometry, geodetic traverses, serifs and other methods.
The geodetic base for construction must be laid out in accordance with the requirements of regulatory documents on geodetic support of construction approved in the prescribed manner.
In the process of erection of underground and above-ground parts of the complex the construction and assembling organization (general contractor, subcontractor) must carry out instrumental (geodesic) control of the accuracy of its geometric parameters which is a mandatory part of the production quality control.
Instrumental (geodesic) control of the accuracy of geometric parameters of the building is to check the compliance of the position of the elements, structures and parts of the building and engineering networks with the design requirements in the process of their installation and temporary fixation.
The planned and height position of elements, structures and parts of the complex, their verticality, the position of embedded parts should be determined from the signs of the internal network of the building or landmarks, and the elements of the engineering network - from the signs of the building network or from solid points of permanent buildings.
Before you start the work it is necessary to check the position of network points and landmarks.
The measurement error during the instrumental (geodesic) control of accuracy of geometric parameters of the complex (including the above-ground part) including during the performing surveys of engineering networks must not exceed the deviation values allowed by the construction norms and rules, state standards or design documentation.
The results of geodesic (instrumental) inspections must be recorded in the general work log, and executive diagrams and drawings must be prepared.
Geometric parameters of the building which are monitored in the process of construction and installation works, methods of instrumental (geodetic) control, the order and scope of its implementation are established by the geodetic works project.
All geodetic work on construction must be carried out in accordance with the geodetic work execution project (PWPW).
Geodetic works.
Geodetic work performed at the construction site includes:
- Establishment of a geodetic base for construction which includes the construction of a demarcation network of the site with the removal of the main axes and building elevations as well as the routing of future utility networks;
- creation of the internal network of the building (on the initial and mounting levels);
- geodetic control of the accuracy of the geometric parameters of the building (its individual units) with the preparation of executive documentation;
a) incoming inspection of materials and component parts in accordance with GOST 24297-87;
b) operational control in accordance with the manufacturer's process documentation (geometrical parameters of the structures);
c) acceptance inspection.
When carrying out geodetic work, the requirements of SNiP 3.01.03 - 84 "Geodetic work in construction.
Geodetic base, according to SP 126.13330.2012 Code of Practice. "Geodetic Surveying in Construction" (revised edition of SNiP 3.01.03-84) must be created at the construction site in the form of a network of fixed points that determine the position of buildings on the ground.
Free spaces must be prepared for laying of reference points and signs to fix new axes of the hotel and office complex, and for measuring segments, angles, lines - clear strips of width of at least 1 m.
The removal of the axes to contour is carried out by organizations licensed to carry out this work. The work shall be documented in a report with the participation of the customer, the contractor and the organization performing the geodetic work.
As part of the construction and installation organizations should be construction laboratories to strengthen the quality control of building materials and works.
Laboratory Control.
Construction laboratories shall be responsible for:
- inspection of conformity to standards, technical specifications, technical passports and certificates of construction materials, structures and products delivered to a construction site;
- Quality control of construction and erection works in accordance with the procedure established by the operational control schemes;
- control and testing of welded joints;
- keeping logs of the control performed.
Justification of the accepted duration of the construction.
During the development of the section "Organization of construction" year-round production of construction works by contract.
The term of construction of the underground part of the hotel and office complex with an underground parking lot is defined on the basis of Regional Standards on duration of buildings and structures construction in Moscow: Underground, 3-storey, closed heated garage for passenger cars - part 3.1 "Automotive transport", section 3 "Transport Construction".
The volume of the underground part of the complex - 41 560.2 m3.
The norms provide for the construction of an underground heated garage with a construction volume of 60000 m3, a duration of 18,4 months and a closed heated garage with a construction volume of 21 600 m3, a duration of 10,1 months.
We accept the method of interpolation to determine the duration.
Duration of construction per unit increase in area will be:
Taking into consideration that the object has been earlier "frozen" after "zero cycle" works performance (excavation excavation, "wall-in-soil" construction), the total period of underground part of the complex erection should be reduced in compliance with Appendix 4 SNiP 1.04.03-85* "Standards for duration of construction and reserve in construction of enterprises, buildings and structures".
The estimated cost of construction and installation works (Сп) makes 8000000 thousand rubles, the cost of construction and installation works, mastered from the beginning of construction of a hotel and office complex (С) - 1000000 thousand rubles.
Distribution of capital investment volumes and building and erection works, %, by quarters of the complex construction is done according to the table (see SNiP 1.04.03-85*):
Serial number of the quarter 1 2 3 4 5