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

2-8 Earthquake Protection
Page 16 FM Global Property Loss Prevention Data Sheets
Table 6. Maximum Horizontal Loads (lb) for Steel Sway Brace Members in Compression (l/r = 300)
Shape
Size, in.
Least Radius of
Gyration, in.
Maximum Length,
Maximum Horizontal Load, lb
Angle of Brace from Vertical
ft, in.
30° —44° 45° —59° 60° —90°
l/r = 300, Fy =36ksi
Pipe (Schedule 40 - Size is Nominal Diameter)
1 0.421 10 ft 6 in. 412 582 713
11 ⁄ 4 0.54 13 ft 6 in. 558 788 966
11 ⁄ 2 0.623 15 ft 6 in. 666 942 1153
2 0.787 19 ft 8 in. 892 1261 1544
Pipe (Schedule 10 - Size is Nominal Diameter)
1 0.428 10 ft 8 in. 344 487 596
11 ⁄ 4 0.55 13 ft 9 in. 443 626 766
11 ⁄ 2 0.634 15 ft 10 in. 511 722 885
2 0.802 20 ft 0 in. 647 915 1120
Angles
11 ⁄ 2×11 ⁄ 2× 1 ⁄ 4 0.292 7 ft 3 in. 573 811 993
2×2× 1 ⁄ 4 0.391 9 ft 9 in. 782 1105 1354
21 ⁄ 2×2× 1 ⁄ 4 0.424 10 ft 7 in. 883 1249 1530
21 ⁄ 2×21 ⁄ 2× 1 ⁄ 4 0.491 12 ft 3 in. 992 1402 1718
3×21 ⁄ 2× 1 ⁄ 4 0.528 13 ft 2 in. 1092 1544 1891
3×3× 1 ⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
⁄
4 0.592 14 ft 9 in. 1200 1697 2078
Rods (Threaded Full Length)
3 8 0.075 1 ft 10 in. 58 82 101
1 2 0.101 2 ft 6 in. 108 152 186
5 8 0.128 3 ft 2 in. 173 244 299
3 4 0.157 3 ft 11 in. 258 364 446
7 8 0.185 4 ft 7 in. 358 506 619
Rods (Threaded at Ends Only)
3 8 0.094 2 ft 4 in. 92 130 159
1 2 0.125 3 ft 1 in. 163 231 283
5 8 0.156 3 ft 10 in. 256 362 443
3 4 0.188 4 ft 8 in. 368 521 638
7 8 0.219 5 ft 5 in. 501 708 867
Flats
11 ⁄ 2× 1 ⁄ 4 0.0722 1 ft 9 in. 313 442 541
2× 1 ⁄ 4 0.0722 1 ft 9 in. 417 589 722
2× 3 ⁄ 8 0.1082 2 ft 8 in. 625 884 1083
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