DS 2-8 Earthquake Protection for Water-Based Fire ... - FM Global

Earthquake Protection 2-8
FM Global Property Loss Prevention Data Sheets Page 31
Through
Bolt
Diameter,
mm
Length
of Bolt in
Timber,
mm
Table 10. Maximum Horizontal Load for Through Bolts in Wood, N
Configuration 1 Configuration 2 Configuration 3
Brace Angle (θ) Brace Angle (θ) Brace Angle (θ)
A B C D E F G H I
30-44° 45-59° 60-90˚ 30-44˚ 45-59˚ 60-90˚ 30-44˚ 45-59˚ 60-90˚
12 40 1637 1637 1637 943 1637 2834 934 1530 2237
65 1993 1993 1993 1152 1993 3452 1157 1939 2931
90 2491 2491 2491 1437 2491 4315 1428 2358 3483
16 40 1922 1922 1922 1108 1922 3327 1103 1833 2722
65 2277 2277 2277 1317 2277 3946 1334 2277 3510
90 2847 2847 2847 1646 2847 4933 1677 2891 4533
140 3986 3986 3986 2300 3986 6904 2251 3652 5249
20 40 2206 2206 2206 1272 2206 3821 1277 2144 3229
65 2562 2562 2562 1481 2562 4439 1512 2611 4106
90 3132 3132 3132 1806 3132 5422 1864 3256 5209
140 4413 4413 4413 2549 4413 7642 2567 4346 6619
22 40 2491 2491 2491 1437 2491 4315 1446 2442 3705
65 2847 2847 2847 1646 2847 4933 1690 2936 4671
90 3345 3345 3345 1931 3345 5796 2011 3559 5836
140 4697 4697 4697 2713 4697 8136 2807 4924 7949
25 40 2776 2776 2776 1601 2776 4809 1615 2740 4181
65 3132 3132 3132 1806 3132 5422 1868 3269 5253
90 3772 3772 3772 2180 3772 6534 2269 4026 6614
140 5267 5267 5267 3043 5267 9123 3185 5703 9515
Notes:
1. Attachments to members with less than 90 mm least dimension are not allowed. Bolt values for thinner members are provided for reference.
2. Table is generated based on American Forest and Paper Association standard ANSI / AF&PA NDS-2005 for wood with specific gravity
(SG) of 0.35 and including a 1.6 Load Duration Factor.
3. Use tabulated values for SG = 0.35 to 0.39. Tabulated values may be increased by the following factors for other specific gravity values:
1.2 for SG = 0.40 to 0.46 (e.g., Hem Fir)
1.4 for SG = 0.47 to 0.52 (e.g., Douglas Fir)
1.6 for SG > 0.52 (e.g., Southern Pine)
Lag Bolt
Diameter,
in.
Length
of Bolt
Under
Head, in.
Table 11. Maximum Horizontal Load for Lag Screws in Wood, lb
Configuration 1 Configuration 2 Configuration 3
Brace Angle (θ) Brace Angle (θ) Brace Angle (θ)
A B C D E F G H I
30-44° 45-59° 60-90˚ 30-44˚ 45-59˚ 60-90˚ 30-44˚ 45-59˚ 60-90˚
3 ⁄ 8 2 118 123 120 69 123 205 63 101 140
3 179 195 194 112 195 310 105 166 232
4 221 236 232 134 236 382 124 197 275
1 ⁄ 2 3 224 252 257 148 252 387 141 225 317
4 301 346 358 207 346 521 199 318 447
5 361 410 419 242 410 625 232 370 520
5 ⁄ 8 3 241 266 268 155 266 417 148 240 344
4 328 371 379 219 371 568 211 342 491
5 415 475 489 282 475 719 274 445 638
6 488 553 565 326 553 845 316 512 735
3 ⁄ 4 4 358 404 412 238 404 621 231 378 550
5 457 522 536 309 522 791 302 495 719
6 555 639 659 381 639 961 374 611 888
Notes:
1. Make attachments to members with least dimension of 3- 1 ⁄ 2 in. or more. Lag screw length under the head of 8 times the screw diameter
are preferred, in no case should the length under the head be less than 4 times the screw diameter.
2. Table is generated based on American Forest and Paper Association standard ANSI / AF&PA NDS-2005 for wood with specific gravity
(SG) of 0.35 and including a 1.6 Load Duration Factor.
3. Use tabulated values for SG = 0.35 to 0.39. Tabulated values may be increased by the following factors for other specific gravity values:
1.2 for SG = 0.40 to 0.46 (e.g., Hem Fir)
1.4 for SG = 0.47 to 0.52 (e.g., Douglas Fir)
1.6 for SG > 0.52 (e.g., Southern Pine)
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