Metal Sales Magna-Loc 180 - Manual (Page 11)

5. Foamed Plastic - (Rigid Insulation) - (Optional) Max thickness 3-1/2 in. when gypsum board (Item 3), plywood (Item 3A)
or OSB (Item 3B) is used and 6 in. when bearing plates (Item 3C) are used. Min bearing strength to be 20 psi. 1.8 pcf
min density.
6. Fasteners - (Screws) Fasteners used to attach panel clips (Item 2) to plywood substructure (Item 3A) or plywood decking
(Item 7) to be No. 10-12 pancake head, No. 2 Phillips drive, A-point, coated steel screw. Fastener length to penetrate plywood
min 1/2 in. Two fasteners per clip.
6A. Fasteners - (Screws) Fasteners used to attach panel clips (Item 2) through gypsum board, OSB or bearing plate (Item 3, 3B,
or 3C, respectively) and foam plastic insulation (Item 5) into plywood deck (Item 7) to be No. 10-12 pancake head, No. 2 Phil-
lips drive, A-point, steel screw. Two screws used per clip.
Note: The panel clips may be fastened to the bearing plate using two No. 10-16 by 1 in. long self-driving, self-tapping,
pancake head No. 2 Phillips drive coated steel screws. The panel clip/bearing plate combination is to be fastened to the
plywood deck using two No. 12-13 No. 3 Phillips Drive coated steel truss head screws, inserted through a guide hole in the
clip and bearing plate and into the plywood deck.
6B. Fasteners - (Screws) (Not Shown) - Fasteners used to attach plywood Substructure (Item 3A) through rigid insulation (Item
5) into plywood deck (Item 7) to be No. 14-13, No. 3 Phillips drive truss head screws. Fastener length to penetrate plywood
deck min 1/2 in. Total of 33 fasteners per 4 by 8 ft plywood sheet to be used. Fasteners located in five rows along the 4 ft
length in a 3-9-12-12-9-3 in. pattern. The two outer rows are in a 3-9-12-12-12-12-12-12-9-3 in. pattern and the three center
rows are in a 3-21-24-24-21-3 in. pattern. All spacing from board edges.
6C. Fasteners - (Screws) (Not Shown) - Fasteners used at end laps of panel (Item 1) to be one of the following: No. 1/4-14 by
1 in. long, Type AB point self-drilling, self-tapping, hex-washer-head, plated or stainless steel screws or No. 12-14 by 1-1/2 in.
long self-drilling, self-tapping, hex-washer-head, plated steel screws. Spacing for 16 in. wide panels to be 1, 3, 4, 4, 3 in.
pattern; spacing for 18 in. wide panels to be 1-1/2, 3-1/2, 4, 4, 3-1/2, 1-1/2 in. pattern.
7. Plywood Deck Plywood decking to be graded per PS83 specifications, 19/32 in. thick, exposure 1, APA rated sheathing,
40/20 in. OC, square edged. Butt ends not blocked.
8. Purlins - Deck Supports Spaced a max of 24 in. OC. Any of the following types may be used:
A. No. 22 MSG min thick coated steel. (33 ksi min yield strength.)
B. Graded dimension lumber, No. 2 or better.
8A. Plywood Fasteners (Not Shown) - Fasteners used to attach the plywood deck (Item 7) to the supports (Item 8) to be as
follows:
a. For plywood-to-wood supports, No. 8-18 by 1-7/8 in. long bugle-head steel screws with a No. 2 Phillips drive, a
“Hi-Low” thread pattern and an “S-Point”.
b. As an alternate to Item a, No. 8d common deformed shank nails may be used.
c. For plywood-to-steel supports for a steel thickness less than No. 20 MSG, No. 7-19 by 1-1/4 in. long bugle-head
steel screws with a No. 2 Phillips head drive, a “Hi-Low” thread pattern and an “S-Point”. For a steel thickness greater
than No. 20 MSG to No. 16 MSG, No. 6-20 by 1-1/4 in. long in. long bugle-head steel screws with a No. 2 Phillips
drive and an S12 (Tek/3) point.
Spacing - For all fastener types to be 6 in. OC at the plywood edges and 12 in. OC in the interior.
Refer to general information, Roof Deck Construction, (Roofing Materials and System Directory) for items not evaluated.
*Bearing the UL Classification Mark
Construction No. 506B (cont.)
October 16, 2001
Uplift - Class 90
Fire Not Investigated
Underwriters Laboratories Inc. ®
LISTED
PML-11
MAGNA-LOC
© Metal Sales Manufacturing Corporation/ Subject to change without notice/ Effective Date 9/11
800.406.7387 (Corporate Office) • www.metalsales.us.com
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Metal Roof Deck Panels
Metal Sales Manufacturing Corporation has obtained fire resistance ratings for various products conducted accord-
ing to test criteria set forth by 'Underwriters Laboratories' "Standard Fire Tests of Building Construction and Material"
(ANSI/UL 263). This test procedure is identical to ASTM E-119 and NFPA 251.
The fire resistance rating is for the total assembly and not just the external metal panel. Ratings are expressed in
hours and vary depending upon the assemblies.
In general, the test criteria is to evaluate the assembly's ability to continue to support the superimposed loads and
resist the passage of flame, high temperatures, or hot gases which will ignite combustible materials. The test assem-
blies are identified by an alpha-numeric design number.
For detail information on specific assemblies and hourly ratings see UL Fire Resistance Directory.
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