DSLBD Office Fit Out - Broughton Construction Company

2.06 FINISHES
1. Mineral core flush doors shall be securely bonded together utilizing Type I adhesive. Manufacture
doors where temperature and humidity controls will insure a state of equilibrium between
component parts at all times.
2. Core density shall be 26 lbs. per cubic foot (nominal).
3. Provide doors with 2-ply, laminated rail edges of salt free, flame resistant material. Outer ply shall
be same wood species as face veneer; inner ply mill option. Securely glue rails to core.
4. Stiles shall be bonded to core and be of salt free, flame resistant material. Stiles shall meet
performance criteria as follows:
a. Split Resistance:
1) Average of ten test samples shall be not less than 900 load pounds when
tested in compliance with Test Method to Determine Split Resistance of Hinge
Edges of Composite Type Fire Doors.
b. Direct Screw Withdrawal: ASTM D1037
1) Average of ten test samples shall be not less than 650 load pounds when
tested for direct screw withdrawal, using a No. 12 x 1 1/4” steel thread-to-head
wood screw of cadmium plated or rust-resistant type
c. Hinge Loading:
1) Not less than 860 pounds when tested in compliance with WDMA Test Method
8.
d. Cycle/Slam: ANSI A151.1, Section 2.5
1) 200,000 cycles with no loose hinge screws or other visible signs of failure
5. Labeled doors shall be manufactured to sizes as needed to provide proper clearances without field
trimming. This procedure shall be followed to assure full thickness of edge bands.
6. Provide salt free non-combustible internal solid blocking for fire doors with mineral core. Arrange
blocking in door so that surface mounted hardware such as, but not limited to, closers, exit device,
etc. may be secured to door without a need for through bolts. A lock block, minimum size 5x12
shall be supplied for bored and mortised locks. Provide top and bottom blocking for attachment of
hardware; minimum size 5”. Provide lock blocks as needed for flushbolts at locations indicated on
hardware templates.
7. Provide metal edges only on pairs of fire doors with two surface mounted vertical rod exit devices.
Other pairs will be furnished with metal edges and overlapping astragal. Metal edges and astragal
shall be veneer wrapped with same specie as door face.
8. Metal astragal for pairs of fire doors shall be formed, pre-machined and veneer wrapped with same
specie as door face.
9. At exit enclosures, provide doors listed for 450°F maximum temperature rise rating for 30 minutes
of exposure.
10. Fire endurance test shall have neutral pressure level established at