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

Earthquake Protection 2-8
FM Global Property Loss Prevention Data Sheets Page 55
F-longitudinal
(on leg 2)
-lateral
(on near crossmain)
6
(150)
6
(150)
2
(50)
1x40x23.0x0.5 =
(1 x 12.2 x 338 x 0.5) =
1 x 17.5 x 23.0 x 0.5 =
(1 x 5.3 x 338 x 0.5) =
2 x 100 x 4.2 x 0.5 =
(2 x 31 x 62 x 0.5) =
=
=
460 lb
(2060 N)
200 lb
(895 N)
420
(1922)
1080 lb
(4877 N)
(Brace F is a longitudinal brace for leg 2, and also a lateral brace for 17.5 ft [5.3 m] of crossmain and two branchline
on the near crossmain. Design is for total of 1080 lb [4877 N]).
3. Crossmain Bracing
K-lateral 6
(150)
2
(50)
Q-lateral 4
(100)
2
(50)
1x25x23.0x0.5 =
(1 x 7.6 x 338 x 0.5) =
3 x 100 x 4.2 x 0.5 =
(3 x 31 x 62 x 0.5) =
=
=
1x25x11.8x0.5 =
(1 x 7.6 x 173 x 0.5) =
3 x 100 x 4.2 x 0.5 =
(3 x 31 x 62 x 0.5) =
=
=
288 lb
(1284 N)
630
(2883)
918 lb
(4167 N)
148 lb
(657 N)
630
(2883)
778 lb
(3450 N)
(Braces K and Q are provided at ends of crossmain to laterally brace crossmain and branchlines in zone of influence,
with design loads as indicated.)
L-lateral 4
(100)
2
(50)
1x15x11.8x0.5 =
(1 x 4.6 x 173 x 0.5) =
2 x 100 x 4.2 x 0.5 =
(2 x 31 x 62 x 0.5) =
=
=
89 lb
(398 N)
420
(1922)
509 lb
(2320 N)
(Brace L is also an end-of-crossmain brace, with a combined crossmain/branchline design of 509 lb [2320 N].)
G-lateral
M-lateral
6
(150)
2
(50)
4
(100)
2
(50)
1 x 37.5 x 23.0 x 0.5 =
(1 x 11.4 x 338 x 0.5) =
3 x 100 x 4.2 x 0.5 =
(3 x 31 x 62 x 0.5) =
=
=
1x30x11.8x0.5 =
(1 x 9.1 x 173 x 0.5) =
3 x 100 x 4.2 x 0.5 =
(3 x 31 x 62 x 0.5) =
=
=
430 lb
(1927 N)
630
(2883)
1060 lb
(4810 N)
177 lb
(787 N)
630
(2883)
807 lb
(3670 N)
(Braces G and M are lateral braces which could be spaced up to 40 ft [12.2 m] apart, but because of sway bracing
location layout, are bracing less than 40 ft [12.2 m] of crossmain and three branchline portions, with design loads as
indicated)
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