Product Technical Guide Supplement for Seismic Bracing per NFPA 13 April 2020

Anchorage for seismic bracing technical supplement
21
April 2020
Maximum allowable pipe horizontal load, F
pw
(lb)
Hilti KCM-MD in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck
3-in W-deck profiles
1,2
Anchor size
Nominal
rod
diameter
Min. edge
distance
Min.
spacing
distance
Min.
concrete
thickness
Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2"
3,000 psi 4,000 psi
A B C A B C
30°-44° 45°-59° 60 °-74° 75°-90° 30°-44° 45°-59° 60°-74° 75°-90°
Pr Pr Pr Pr Pr Pr Pr Pr
in in in in in 4.100 1.580 0.870 1.850 4.100 1.580 0.870 1.850
3/8"-1/2" 1/2 11/16 6 2-1/ 2 116 276 420 244 135 308 459 273
3/8"-1/2"-5/8" 1/2 7/ 8 7-1/2 3-1/4 133 305 455 271 154 338 495 302
Anchor size
Nominal
rod
diameter
Min. edge
distance
Min.
spacing
distance
Min.
concrete
thickness
Tolco™ Figure 909 seismic brace
3,000 psi 4,000 psi
A B C A B C
30°-44° 45°-59° 60 °-74° 75°-90° 30°-44° 45°-59° 60°-74° 75°-90°
Pr Pr Pr Pr Pr Pr Pr Pr
in in in in in 2.626 1.002 0.870 1.230 2.626 1.002 0.870 1.230
1/4"-3/8" 3/8 11/16 5-1/2 2-1/2 131 257 279 226 147 279 301 248
3/8"-1/2"
3/8 11/16 6 2-1/2 180 368 402 321 202 402 437 353
1/2 11/16 6 2-1/ 2 182 383 420 332 207 421 459 367
3/8"-1/2"-5/8"
1/2 7/8 7-1/2 3-1/4 205 417 455 364 230 456 495 401
5/8 7/8 7-1/2 3-1/4 208 471 521 405 240 521 574 451
5/8"-3/4"
5/8 7/8 7-1/2 3-1/4 208 451 496 390 240 497 544 432
3/4 7/8 7-1/2 3-1/4 208 471 521 405 240 521 574 451
Anchor size
Nominal
rod
diameter
Min. edge
distance
Min.
spacing
distance
Min.
concrete
thickness
Tolco™ Figure 910/980 seismic brace
3,000 psi 4,000 psi
A B C A B C
30°-44° 45°-59° 60 °-74° 75°-90° 30°-44° 45°-59° 60°-74° 75°-90°
Pr Pr Pr Pr Pr Pr Pr Pr
in in in in in 3.275 1.156 0.910 1.739 3.275 1.156 0.910 1.739
1/4"-3/8" 3/8 11/16 5-1/2 2-1/2 109 235 272 179 123 257 294 198
3/8"-1/2"
3/8 11/16 6 2-1/2 146 334 391 250 168 368 426 278
1/2 11/16 6 2-1/ 2 146 347 408 256 168 383 447 286
3/8"-1/2"-5/8"
1/2 7/8 7-1/2 3-1/4 167 380 443 284 192 417 482 316
5/8 7/8 7-1/2 3-1/4 167 424 505 308 193 471 557 346
5/8"-3/4"
5/8 7/8 7-1/2 3-1/4 167 408 482 299 193 451 529 335
3/4 7/8 7-1/2 3-1/4 167 424 505 308 193 471 557 346
Anchor size
Nominal
rod
diameter
Min. edge
distance
Min.
spacing
distance
Min.
concrete
thickness
Afcon™ AF075/AF076/AF077 seismic brace
3,000 psi 4,000 psi
A B C A B C
30°-44° 45°-59° 60°-90° 30°-44° 45°-59° 60°-90°
Pr Pr Pr Pr Pr Pr
in in in in in 3.724 2.150 1.375 3.724 2.150 1.375
3/8"-1/2" 1/2 11/16 6 2-1/2 128 217 306 148 243 340
Anchor size
Nominal
rod
diameter
Min. edge
distance
Min.
spacing
distance
Min.
concrete
thickness
Afcon™ AF771 seismic brace
3,000 psi 4,000 psi
A B C A B C
30°-44° 45°-59° 60°-90° 30°-44° 45°-59° 60°-90°
Pr Pr Pr Pr Pr Pr
in in in in in 4.170 2.000 0.964 4.170 2.000 0.964
3/8"-1/2" 1/2 11/16 6 2-1/2 114 230 393 132 257 431
3/8"-1/2"-5/8"
1/2 7/8 7-1/2 3-1/4 131 255 427 151 285 466
5/8 7/8 7-1/2 3-1/4 131 273 485 151 309 535
5/8"-3/4"
5/8 7/8 7-1/2 3-1/4 131 268 463 151 300 510
3/4 7/8 7-1/2 3-1/4 147 254 372 151 309 535
1 Anchor may be placed in upper or lower flute. Prying factors noted assume the seismic swivel brace has its full bearing area in contact with the metal deck.
2 Only ASTM A193 Grade B7, ASTM A325, or ASTM F1554 Grade 105 threaded rod is permitted with smaller interior thread diameter. A36 threaded rod (or stronger) can be used with largest
thread diameter per insert.
3,000 psi or
4,000 psi
Lightweight over
metal deck
3-in W-deck
Min. edge distance
3-7/8"
min.
3,000 psi minimum
lightweight concrete
Min.
concrete
thickness
3" max.