STEEL DOORS AND FRAMES
Steel doors and frames shop drawings have been made.
STEEL DOORS AND FRAMES
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.
SUBMITTALS
Submit the following:
Shop Drawings
Doors
Frames
Accessories
Show elevations, construction details, metal gages, hardware provisions, and installation details.
Doors Schedules
Frames Schedules
Submit door and frame locations, architectural door number, blast resistant fire-rating, and indication of the construction details referring to the submitted shop drawings.
Product Data
Doors
Frames
Accessories
Submit manufacturer's descriptive literature for doors, frames, and accessories. Include data and details on door construction, panel(internal) reinforcement, insulation, and door edge construction.
Samples
Factory-applied enamel finish. Where colors are not indicated, submit manufacturer's standard colors and patterns to the Contracting Officer for selection.
Design Data
Structural calculations for blast loads
Test Reports
Resistance to blast loads
Certificates
Doors
Frames
Submit copies of certificates from recognized testing agencies indicating compliance with requirements.
Doors
Frames
QUALITY ASSURANCE
Reinforcing Coordination
Contractor shall coordinate between the hardware and door manufacturers to Ensure required reinforcing of door assemblies is provided at time of fabrication for required hardware including, but not limited to, locksets, hinges, fastening devices and closers.
Rated Assembly Coordination
Contractor shall coordinate selection of steel door and frame materials and products specified herein with door hardware specified "Door Hardware" to ensure that fire rated and/or blast resistant assemblies meet all U. S. and Italian related requirements.
Manufacturer Qualifications
Obtain steel doors and frames through one source from a single manufacturer
PERFORMANCE REQUIREMENTS
Blast Resistance Criteria
Design and fabricate exterior blast resistant, frames, doors and hardware to resist the dynamic blast load indicated. Refer to Section 08120 “Aluminum Doors, Frames and Sidelights” for the loads to be applied.
Fire Resistance Criteria
Doors and frames shall be designed and constructed in compliance with REI classification as shown on drawings.
DELIVERY, STORAGE, AND HANDLING
Deliver doors, frames, and accessories undamaged and with protective wrappings or packaging. Strap knock-down frames in bundles. Provide temporary steel spreaders securely fastened to the bottom of each welded frame. Store doors and frames on platforms under cover in clean, dry, ventilated, and accessible locations, with 6 mm airspace between doors. Remove damp or wet packaging immediately and wipe affected surfaces dry. Replace damaged materials with new.
STEEL DOORS
UNI 7961 and UNI 7962 except as specified otherwise. Prepare doors to receive hardware specified in Section 08710, "Door Hardware." Undercut where indicated. Exterior doors shall have top edge closed flush and sealed to prevent water intrusion or connection. Doors shall be 45 millimeters thick, unless otherwise indicated. REI rated doors shall be 65 millimeters thick, unless otherwise indicated by the selected door manufacturer.
Door Construction
Doors shall be composite flush type, constructed of two outer sheets with edges continuously welded and finished flush, fully welded seamless construction with no visible seams or joints on faces. All welds shall be ground, filled and dressed smooth and flush with the surface. The outer face sheets shall be reinforced with interlocking vertical channels of "Z" members. Tops and bottoms of exterior doors shall have continuous channel closures 1.5 mm thick welded to the face sheets. Close the tops and bottom of interior doors with a recessed channel end closure or a flush end closure treatment, 1.5 mm thick minimum. Resistance stiffen and sound deaden all doors.
Internal Door Construction
At time of fabrication (at the factory) weld additional metal reinforcing into the interior of door for mounting of mortised and surface-applied hardware. Provide frame reinforcement for hinges, door closers, and for locksets. Provide one of the following:
a. Continuous vertical stiffeners of not lighter than one mm steel spaced not more than 150 mm apart and spot welded to both face sheets (or face panels) at intervals not greater than 150 mm.
b. An inner grid system of vertical and horizontal members with rectangular/square cross-sections of not lighter than one mm steel, welded or interlocked for maximum strength, spaced not to exceed and average of 300 mm in either direction, and spot weld to both face sheets at intervals not greater than 150 mm.
c. Continuous horizontal stiffeners of not lighter than one mm steel spot welded to both face sheets (or face panels) at intervals greater than 150 mm.
d. A continuous, formed sheet steel truss core, full height and width, spot welded to face sheets at intervals not greater than 150 mm in both directions.
Door Construction Duty
Heavy Duty Doors (HD)
Face panels of 1.5 mm thick sheet steel, seamless, with vertical steel stiffeners, of 2 mm thick spaces 150 mm o.c. with the space between the stiffeners filled with insulation core as specified in paragraph "INSULATION CORES". Provide heavy duty interior and exterior metal doors unless indicated otherwise.
Extra Heavy Duty Doors (EHD)
Face panels of 2.0 mm thick sheet steel, seamless with 2.75 mm thick vertical steel stiffeners with the space between the stiffeners filled with insulation core as specified in paragraph "INSULATION CORES."
Door Construction Tolerances
Provide doors with the following minimum tolerances:
a. Flatness: UNI EN 952. Measurement repeated on both sides of door,
tolerances below worded with door standing up in final hung position.
(1) Horizontal Centerline: Measure from a 1830 mm straight edge placed on the vertical center line of the door. Distance cannot be more than plus 4.76 mm minus 0 mm.
(2) Horizontal Edges: Measure from a 1830 mm straight edge when placed 25 mm in from and parallel to the lock and hinge edge. Dimension can not vary more than plus or minus 1.58 mm.
(3) Vertical Centerline: Measure from a straight edge 50 mm less than the width of the door on the horizontal centerline. Dimension shall have not variance from flat.
b. Squareness: UNI EN 951. Measured diagonally from corner to corner across the face of the door, the two dimensions shall not vary more than plus or minus 1.58 mm.
c. Door Thickness: Thickness for a 45 mm to 60 mm door shall not vary more than plus or minus 1.58 mm.
d. Door width or Height: Door width or door height shall not vary more than plus or minus 1.19 mm.
e. Torsion Deformation: UNI EN 948.
Blast Resistance Fabrication
Fabricate exterior blast resistant doors and frames similar to requirements specified in "Extra Heavy Duty Doors" except provide additional reinforcing and heavier thickness metal as required to meet requirements specified in paragraph entitled "Blast" Resistance Criteria: herein.
Louvers
Exterior Louvers
Louvers shall be inverted "Z" type with minimum of 55 percent net-free opening. Weld or tenon louver blades to continuous channel frame. Form louvers of hot-dip galvanized steel of same gage as shown for the door. Louvers shall have steel-framed bird screens secured to room side and readily removable. Provide galvanized steel, 13 by 13 mm mesh hardware cloth, for bird screens. Net-free louver area to be 55 percent before screening.
Astragals
For pairs of exterior steel doors which will not have aluminum astragals or removable mullions, as specified in Section 08710, "Door Hardware," provide overlapping steel astragals with the doors. For interior pairs of fire rated doors, provide stainless steel astragals complying with UNI EN 1634-1 for fire rated assemblies.
INSULATION CORES
EN 9774. Insulated cores shall be of type specified, shall provide maximum assembly U-value of .48 and shall conform to:
a. Rigid Polyurethane Foam: ISO 4898 Type RC/PUR, foamed-in-place or in board form, with oxygen index of not less than 22 percent; or,
b. Rigid Polystyrene Foam Board: ISO 4898, Type RC/PS; or,
c. Mineral Fiber: Rock wool or glass fiber.
STANDARD STEEL FRAMES
Form frames to sizes and shapes indicated, with welded corners for masonry walls and knock-down field-assembled corners for metal stud walls. Provide steel frames for doors, transoms, unless otherwise indicated.
Frame Tolerances
a. Frame Depth (Jamb Width or Depth Perpendicular to the Door Plane): The width dimension of the frame shall not vary more than plus or minus 1.58 mm. The width dimension of the preparation side of frame to receive door shall not vary more than 0.39 mm.
b. Frame Throat Opening: The throat opening dimension shall not vary more than plus or minus 2.38 mm in width.
c. Frame Face (Frame Face Parallel to Door Plane): The frame face dimension shall not vary more than plus or minus 0.79 mm.
d. Frame Opening Width: The frame opening width to receive the door shall not vary more than 1.58 mm larger and .79 mm less than the fabrication dimension.
e. Hinge Preparation Recess: The recess cut out to receive the hinges shall not be less than the size of the hinge or more than 0.39 mm larger than the hinge.
Welded Frames
Continuously weld frame faces at corner joints. Mechanically interlock or continuously weld stops and rabbets. Grind welds smooth.
Knock-Down Frames
Design corners for simple field assembly by concealed tenons, splice plates, or interlocking joints that produce square, rigid corners and a tight fit and maintain the alignment of adjoining members. Provide locknuts for bolted connections.
Transom Bars
Mullions and transom bars shall be closed or tubular construction and shall member with heads and jambs butt-welded thereto. Bottom of door mullions shall have adjustable floor anchors and spreader connections.
Anchors
Provide anchors to secure the frame to adjoining construction. Provide steel anchors, zinc-coated or painted with rust-inhibitive paint, not lighter than 2.0 mm gage.
Wall Anchors
Provide at least three anchors for each jamb. For frames which are more than 2285 mm in height, provide one additional anchor for each jamb for each additional 760 mm or fraction thereof.
a. Masonry: Provide anchors of corrugated or perforated steel straps or 5 mm diameter steel wire, adjustable or T-shaped;
b. Stud partitions: Weld or otherwise securely fasten anchors to backs of frames. Design anchors to be fastened to closed steel studs with sheet metal screws, and to open steel studs by wiring or welding;
c. Completed openings: Secure frames to previously placed concrete or masonry with expansion bolts and
Floor Anchors
Provide floor anchors drilled for 10 mm anchor bolts at bottom of each jamb member. Where floor fill occurs, terminate bottom of frames at the indicated finished floor levels and support by adjustable extension clips resting on and anchored to the structural slabs.
FIRE RATED DOORS AND FRAMES
UNI EN 1634-1. The construction and materials of door and frames shall be such to achieve the required fire-resistance rating in hours indicated on the door schedule. Fire-rated doors, frames and hardware shall be in accordance with Italian Norms. Fire-rated doors and frames shall have a certification from the "Centro Studi ed Esperienze Antincendi" at the Italian Ministry of the Interior (Ministero dell" Interno) attesting the fire resistance rating.
Labels
Fire doors and frames shall bear a label indicating the name of the manufacturer, year of fabrication, name of certifying agency, certificate number and class of fire resistance and serial number with year of fabrication. Testing shall be in accordance with ISO 834 or ISO 3008 and ISO 3009 or ISO 5925/1. Labels shall be metal with raised letters. Labels shall be permanently affixed at the factory to frames and to the hinge edge of the door. Door labels shall not be painted. REI requirements shall be as indicated.
Oversized Doors
For fire doors and frames which exceed the size allowed by UNI EN 1634-1, furnish certificates stating that the doors and frames are identical in design, materials, and construction to a door which has been tested and meets the requirements for the class indicated.
Astragal on Fire Doors
On pairs of rated fire doors, conform to UNI EN 1634-1.
WEATHERSTRIPPING
As specified in Section 08710, "Door Hardware."
Integral Gasket
Black synthetic rubber gasket with tabs for factory fitting into factory slotted frames, or extruded neoprene foam gasket made to fit into a continuous groove formed in the frame, may be provided in lieu of head and jamb seals specified in Section 08710, "Door Hardware." Insert gasket in groove after frame is finish painted. Air leakage of weatherstripped doors shall not exceed 2.19 by 10-5 cubic meters per second of air per square meter of door area per ISO 8272.
HARDWARE PREPARATION
Space reinforce, drill, and tap doors and frames to receive finish hardware. Prepare doors and frames for hardware as indicated. Drill and tap for surface-applied hardware at the project site. Build additional reinforcing for surface-applied hardware into the door at the factory. Locate hardware as indicated. Punch door frames , with the exception of frames that will have weatherstripping gasketing, to receive a minimum of two rubber or vinyl door silencers on lock side of single doors and one silencer for each leaf at heads of double doors. Set lock strikes out to provide clearance for silencers.
Provisions for Hardware
Fabricate doors and frames to receive hardware specified in Section 08710 "Door Hardware". Doors shall be capable of accepting U. S. fabricated hardware to comply with fire rating requirements. Doors in which manufacturers provide their own lockset assembly and hinges and other hardware as part of the door assembly shall be rejected (and shall not be installed on this project). Doors and frames with welded hinges are not acceptable. The hardware shall be as specified and shall be incorporated by the door manufacturer. Frames shall be prepared at the factory for installation of hardware. Frames shall be mortised, reinforced, drilled and tapped to templates to receive mortised template hinges, lock strikes flush bolts, and overhead door closer where required. Reinforcing plates shall be required for hardware. Cover boxes in back of hardware cut-uts shall be provided. Minimum reinforcement of doors and frames for hardware shall be as follows:
HARDWARE MIN. THICKNESS MIN. SIZE
Hinges Door 3 mm 200 x 40 mm
Frame 3 mm 200 x 40 mm
Mortise Locksets Door 1.5 mm 250 x 100 mm
and Deadbolts Frame 1.5 mm 160 x 40 mm
Surface Applied Closers Door 2 mm 320 x 100 mm
Frame 2 mm 350 mm x width of face, jamb or stop as required
FINISHES
Factory-Primed Finish
Unless specified otherwise, phosphate treat and factory prime metal doors and frames , or paintable galvannealed steel without primer. Where coating is removed by welding, apply touchup of factory primer.
Hot-Dip Zinc-Coated and Factory-Primed Finish
Fabricate exterior scheduled doors, frames and louvers from galvanized steel, UNI EN 10142. Repair damaged zinc-coated surfaces by the application of zinc dust paint. Phosphate treat and factory prime zinccoated surfaces.
Factory-Applied Enamel Finish
After factory priming, apply two coats of medium-gloss enamel to exposed surfaces. Separately bake or oven dry each coat. Drying time and temperature requirements shall be in accordance with the coating manufacturer's recommendations. Color(s) of finish coat shall be as indicated and shall match approved color sample(s).
FABRICATION AND WORKMANSHIP
Finished doors and frames shall be strong and rigid, neat in appearance, and free from defects, waves, scratches, cuts, dents, ridges, holes, warp, and buckle. Molded members shall be clean cut, straight, and true, with joints coped or mitered, well formed, and in true alignment. Dress exposed welded and soldered joints smooth. Design door frame sections for use with the wall construction indicated. Corner joints shall be well formed and in true alignment. Conceal fastenings where practicable. On wraparound frames for masonry partitions, provide a throat opening 3 mm larger than the actual masonry thickness. Design other frames in exposed masonry walls or partitions to allow sufficient space between the inside back of trim and masonry to receive calking compound.
Grouted Frames
For frames to be installed in exterior walls and to be filled with mortar or grout, fill the stops with strips of rigid insulation to keep the grout out of the stops and to facilitate installation of stop-applied head and jamb seals.
INSTALLATION
Frames
Set frames plumb. Align, and brace securely until permanent anchors are set. Anchor bottoms of frames with expansion bolts or powder-actuated fasteners. Build in or secure wall anchors to adjoining construction. Backfill frames with mortar. When an additive is provided in the mortar, coat inside of frames with corrosion-inhibiting bituminous material. For frames in exterior walls, ensure that stops are filled with rigid insulation before grout is placed.
Doors
Hang doors in accordance with clearances as recommended by manufacturer. After erection and glazing, clean and adjust hardware.
Fire Doors and Frames
Install fire doors and frames, including hardware, in accordance with UNI EN 1634-1.
Blast Resistant Doors and Frames
Install blast resistant doors and frames, including hardware, in accordance with door and frame manufacturer’s recommendations, and in compliance with indication shown on drawings.
PROTECTION
Protect doors and frames from damage. Repair damaged doors and frames prior to completion and acceptance of the project or replace with new, as directed. Wire brush rusted frames until rust is removed. Clean thoroughly. Apply an all-over coat of rust-inhibitive paint of the same type used for shop coat.
CLEANING
Upon completion, clean exposed surfaces of doors and frames thoroughly. Remove mastic smears and other unsightly marks.