National Gypsum Construction Guide - 12th Edition
National Gypsum Construction Guide - 12th Edition National Gypsum Construction Guide - 12th Edition
INSTALLATION SHELF BRACKET SHELF BRACKET BETWEEN STUDS STEEL STUD 2 1/2" #14 WOOD SCREWS MIN. 12" LONG WOOD FILLER BLOCK CUT FOR SNUG FIT INSIDE STUD GYPSUM BOARD SHELF BRACKET FLUSH-TO-WALL ATTACHMENTS GYPSUM BOARD FASTENERS 4" MIN. STEEL ANGLE OUTSTANDING LEG 1" WIDE MAX. 98 NATIONAL GYPSUM BOARD PRODUCTS SHELF BRACKET BEARING (1" MIN. BRACKET WIDTH) SHELF BRACKET BETWEEN STUDS Allowable Load With Wood Blocks Wood Block with 1/2" (12.7 mm) gypsum board 40 ft. lbs. per bracket (54 N-M) Wood Block with 5/8" (15.9 mm) gypsum board 70 ft. lbs. per bracket (95 N-M) Allowable Load With Sheet Metal (.0239) .0239 sheet metal substituted 40 ft. lbs. per bracket (54 N-M) for wood with 1/2" (12.7 mm) gypsum board .0239 sheet metal substituted 50 ft. lbs. per bracket (68 N-M) for wood with 5/8" (15.9 mm) gypsum board SHELF BRACKET Allowable Load Wood Block 80 ft. lbs. per bracket (108 N-M) – 2' o.c. (610 mm) 40 ft. lbs. per bracket (54 N-M) – 4' o.c. (1219 mm) Without filler blocks using 50 ft. lbs. per bracket (68 N-M) – 2' o.c. (610 mm) min. #10 sheet metal screws 25 ft. lbs. per bracket (34 N-M) – 4' o.c. (1219 mm) into screw stud GYPSUM BOARD SEE CHART BELOW FOR SHELF BRACKET ALLOWABLE LOADS STEEL STUD EXTRA HEAVY LOADS 16 GAUGE STEEL STUD OR U CHANNEL TO FLOOR L (PARTITION HEIGHTS) 1" X 3" X 12" WOOD BLOCKS LAMINATE OR SCREW ATTACHED TO BACK OF GYPSUM BOARD BETWEEN STUDS 6" MIN. ALLOWABLE LOAD 700 ft. lbs. per bracket. SHELF BRACKET BEARING (1" MIN. BRACKET WIDTH) 1 1/2" #10 WOOD SCREWS 3 5/8" STEEL STUDS. 24" O.C. S-12 SCREWS. 16" O.C. 0.12 L MIN. 6" MIN. 0.12 L MIN. 1/4" DIA. BOLT NUT & WASHER 2 LAYERS 5/8" GYPSUM BOARD BOTH SIDES (SCREWS 12" O.C. BOTH SIDES) GYPSUM BOARD FASTENERS Allowable Load Type 1/2" (12.7 mm) 5/8" (15.9 mm) Fastener Size Gypsum Board Gypsum Board Hollow 1/8" (3.2 mm) dia. SHORT 50 lbs.(23 kg) — Wall 3/16" (4.8 mm) dia. SHORT 65 lbs.(29 kg) — Screw 1/4" (6.4 mm), 5/16" (7.9 mm) 65 lbs.(29 kg) — Anchors 3/8" (9.4 mm) dia. SHORT — 90 lbs.(41 kg) 3/16" (4.8 mm) dia. LONG 1/4" (6.4 mm), 5/16" (7.9 mm), 3/8" (9.4 mm) dia. LONG — 95 lbs.(43 kg) Common 1/8" (3.2 mm) dia. 30 lbs.(14 kg) 90 lbs.(41 kg) Toggle Bolts 3/16" (4.76 mm) dia. 60 lbs.(27 kg) 1/4" (6.4 mm), 5/16" (7.9 mm), 80 lbs.(36 kg) 3/8" (9.4 mm) dia. 120 lbs.(54 kg) 120 lbs.(54 kg) HOLLOW WALL SCREW ANCHOR COMMON TOGGLE BOLT
Steel Frame Ceilings/Furring Channels or Studs DESCRIPTION RECOMMENDATIONS DETAILS There are three types of steel furring members for the screw attachment of gypsum board ceilings. 1. Furring Channels 2. Resilient Furring Channels 3. Steel Studs All three are suitable for fastening to the lower chord of steel joists or to carrying channels in suspended ceiling constructions. Furring Channels are secured with clips or tie wires. Resilient Furring Channels shall be secured with wire ties. Steel Studs shall be attached with tie wires as shown on page 99. Gold Bond Gypsum Board shall be applied using gypsum drywall screws spaced not greater than 12" o.c. RECOMMENDATIONS These furring systems, when employed with normal steel joist construction and gypsum board, constitute non-combustible construction and, in addition, fire resistance ratings are achieved as indicated on page 25. LIMITATIONS Lighting and other fixtures shall be supported by framing; do not use gypsum board to support them. For large expanses of these ceiling systems with perimeter relief, control joints must be located a maximum of 50' o.c. in either direction; without perimeter relief, 30' o.c. maximum in either direction. DIRECT ATTACHMENT 1. Space and position furring channels in accordance with manufacturer recommendation. Wire tie Resilient Furring Channels, Steel Studs or Furring Channels as shown on page 100. 2. Apply gypsum board with its long dimension at right angles to the channels. Locate gypsum board butt joints over the center of the furring channels. Attach gypsum board with 1" selfdrilling drywall screws 12" o.c. located not less than 3/8" nor more than 1/2" from edges. SUSPENDED 1. Install 1 1/2" channels 4' o.c. with No. 8 ga. hanger wire spaced a maximum of 4' o.c. along carrying channels. Attach Furring Channels spaced not more than 24" o.c. perpendicular to 1 1/2" C.R. Channels with double strand of saddle tied No. 16 ga. galvanized tie wire, or 1 1/2" Furring Channel Clips. 2. Apply gypsum board with its long dimension at right angles to the Furring Channels. Locate gypsum board butt joints over the center of Furring Channels. Attach gypsum board with 1" self-drilling drywall screws 12" o.c. in the field of the board 8" or 12" o.c. at butt joints, located not less than 3/8" or more than 1/2" from edges. SPLICE JOINT FOR STUDS 4 PAN HEAD SCREWS EACH SIDE FURRING CHANNEL SPLICE JOINT 6" MIN. SPECIFICATIONS See CSI Metal Framing Specifications on page 97. 09 29 00/NGC 16" LENGTH OF TRACK TIE WIRES NATIONAL GYPSUM BOARD PRODUCTS 99 09 29 00
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Steel Frame Ceilings/Furring Channels or Studs<br />
DESCRIPTION RECOMMENDATIONS DETAILS<br />
There are three types of steel<br />
furring members for the<br />
screw attachment of<br />
gypsum board ceilings.<br />
1. Furring Channels<br />
2. Resilient Furring Channels<br />
3. Steel Studs<br />
All three are suitable for<br />
fastening to the lower<br />
chord of steel joists or to<br />
carrying channels in<br />
suspended ceiling<br />
constructions. Furring<br />
Channels are secured with<br />
clips or tie wires. Resilient<br />
Furring Channels shall be<br />
secured with wire ties. Steel<br />
Studs shall be attached<br />
with tie wires as shown on<br />
page 99. Gold Bond<br />
<strong>Gypsum</strong> Board shall be<br />
applied using gypsum<br />
drywall screws spaced not<br />
greater than 12" o.c.<br />
RECOMMENDATIONS<br />
These furring systems, when<br />
employed with normal<br />
steel joist construction and<br />
gypsum board, constitute<br />
non-combustible<br />
construction and, in<br />
addition, fire resistance<br />
ratings are achieved as<br />
indicated on page 25.<br />
LIMITATIONS<br />
Lighting and other fixtures<br />
shall be supported by<br />
framing; do not use gypsum<br />
board to support them.<br />
For large expanses of these<br />
ceiling systems with<br />
perimeter relief, control<br />
joints must be located a<br />
maximum of 50' o.c. in<br />
either direction; without<br />
perimeter relief, 30' o.c.<br />
maximum in either<br />
direction.<br />
DIRECT ATTACHMENT<br />
1. Space and position furring<br />
channels in accordance<br />
with manufacturer<br />
recommendation. Wire tie<br />
Resilient Furring Channels,<br />
Steel Studs or Furring<br />
Channels as shown on<br />
page 100.<br />
2. Apply gypsum board with<br />
its long dimension at right<br />
angles to the channels.<br />
Locate gypsum board butt<br />
joints over the center of the<br />
furring channels. Attach<br />
gypsum board with 1" selfdrilling<br />
drywall screws 12"<br />
o.c. located not less than<br />
3/8" nor more than 1/2"<br />
from edges.<br />
SUSPENDED<br />
1. Install 1 1/2" channels 4'<br />
o.c. with No. 8 ga. hanger<br />
wire spaced a maximum of<br />
4' o.c. along carrying<br />
channels. Attach Furring<br />
Channels spaced not more<br />
than 24" o.c. perpendicular<br />
to 1 1/2" C.R. Channels<br />
with double strand of<br />
saddle tied No. 16 ga.<br />
galvanized tie wire, or 1<br />
1/2" Furring Channel Clips.<br />
2. Apply gypsum board with<br />
its long dimension at right<br />
angles to the Furring<br />
Channels. Locate gypsum<br />
board butt joints over the<br />
center of Furring Channels.<br />
Attach gypsum board with<br />
1" self-drilling drywall<br />
screws 12" o.c. in the field<br />
of the board 8" or 12" o.c.<br />
at butt joints, located not<br />
less than 3/8" or more than<br />
1/2" from edges.<br />
SPLICE JOINT FOR STUDS<br />
4 PAN HEAD SCREWS<br />
EACH SIDE<br />
FURRING CHANNEL SPLICE JOINT<br />
6" MIN.<br />
SPECIFICATIONS<br />
See CSI Metal Framing<br />
Specifications on page 97.<br />
09 29 00/NGC<br />
16" LENGTH<br />
OF TRACK<br />
TIE WIRES<br />
NATIONAL GYPSUM BOARD PRODUCTS<br />
99<br />
09 29 00
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