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

2-8 Earthquake Protection
Page 32 FM Global Property Loss Prevention Data Sheets
Lag Bolt
Diameter,
mm
Length
of Bolt
Under
Head,
mm
Table 12. Maximum Horizontal Load for Lag Screws 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˚
10 50 525 547 534 307 547 912 280 449 623
75 796 867 863 498 867 1379 467 738 1032
100 983 1050 1032 596 1050 1699 552 876 1223
12 75 996 1121 1143 658 1121 1721 627 1001 1410
100 1339 1539 1592 921 1539 2318 885 1415 1988
125 1606 1824 1864 1076 1824 2780 1032 1646 2313
16 75 1072 1183 1192 689 1183 1855 658 1068 1530
100 1459 1650 1686 974 1650 2527 939 1521 2184
125 1846 2113 2175 1254 2113 3198 1219 1979 2838
150 2171 2460 2513 1450 2460 3759 1406 2277 3269
20 100 1592 1797 1833 1059 1797 2762 1028 1681 2447
125 2033 2322 2384 1374 2322 3519 1343 2202 3198
150 2469 2842 2931 1695 2842 4275 1664 2718 3950
Notes:
1. Make attachments to members with least dimension of 90 mm 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)
Table 13. Maximum Horizontal Load for Post-Installed Concrete Expansion or Wedge Anchors in 2500 psi Normal Weight
Concrete 1 ,lb
Nominal
Bolt
Diameter,
in.
Minimum
Embedment,
in.
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- 1 ⁄ 4 356 475 590 340 475 617 366 517 633
1 ⁄ 2 3 719 930 1121 647 930 1245 648 917 1123
5 ⁄ 8 3- 3 ⁄ 4 953 1283 1603 926 1283 1651 1014 1434 1757
3 ⁄ 4 4- 1 ⁄ 2 1322 1795 2262 1306 1795 2289 1463 2069 2534
Notes:
1. The table was generated assuming uncracked concrete and the expansion bolt allowable capacities given in Table 2A in Data Sheet
1-2, Earthquakes. Manufacturers typically supply bolts in many lengths; choose bolts with embedment at least equal to that shown in the
table (embedment values are based on 6 times the bolt diameter [6Db]).
2. Values in the table assume a minimum edge distance of 12 times the bolt diameter (12Db). Configuration 1 and Configuration 2 values
may be increased by 15% for 24Db edge distances and by 25% for 36Db edge distances. Configuration 3 values may be increased by
40% for 24Db edge distances and by 75% for 36Db edge distances.
3. Where Configuration 1 attachments are made to lightweight concrete-filled metal deck, use 60% of the table values.
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