and at perimeters of louver and glass cutouts. Wall sections of
extruded aluminum members shall be not less than 2.25 mm 0.09 inch
thick and be properly reinforced for application of hardware.
Framing members shall be covered on both sides with aluminum
facing sheets not less than 2 mm 0.064 inch thick. Fill door with
foamed-in urethane with a 48 kg per cubic meter 3 pound density.
2.3.3
Welding and Fastening
Where possible, locate welds on unexposed surfaces. Dress welds on exposed
surfaces smoothly. Select welding rods, filler wire, and flux to produce a
uniform texture and color in finished work. Remove flux and spatter from
surfaces immediately after welding. Exposed screws or bolts will be
permitted only in inconspicuous locations, and shall have countersunk
heads. Weld concealed reinforcements for hardware in place.
2.3.4
Weatherstripping
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NOTE: Maximum air leakage rates are 2.19 x 10-5 cms
per sq. m 0.5 cfm per sq. ft. of door area for
residential swinging doors and 5.48 x 10-5 cms per
sq. m 1.25 cfm per sq. ft. of door area for
non-residential doors. Both of the air leakage
rates assume the use of threshold and sweepstrip.
Coordinate with Section 08710, "Door Hardware."
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Provide on stiles and rails of exterior doors. Fit into slots which are
integral with doors or frames. Weatherstripping shall be replaceable
without special tools, and adjustable at meeting rails of pairs of doors.
Installation shall allow doors to swing freely and close positively. Air
leakage of a single leaf weatherstripped door shall not exceed [2.19 x
10-5] [5.48 x 10-5] cubic meter per second of air per square meter [0.5]
[1.25] cubic feet per minute of air per square foot of door area when
tested in accordance with ASTM E 283.
2.3.5
Anchors
On the backs of subframes, provide anchors of the sizes and shapes
indicated for securing subframes to adjacent construction. Anchor transom
bars at ends and mullions at head and sill. [Where indicated, reinforce
vertical mullions with structural steel members of sufficient length to
extend up to the overhead structural slab or framing and secure thereto.]
[Reinforce and anchor freestanding door frames to floor construction as
indicated on approved shop drawings and in accordance with manufacturer's
recommendation.] Place anchors [as indicated] [near top and bottom of each
jamb and at intermediate points not more than 635 mm 25 inches apart].
2.3.6
Provisions for Hardware
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NOTE: This guide specification requires that
hardware and glazing for aluminum doors be specified
in their respective sections of the project
specification.
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SECTION 08120
Page 9
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