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Blast & Seismic Design

Blast

Various specifications and design standards allow the use of nominal strength of material when calculating resistance values of components for special blast or seismic design. Beyond the use of nominal strength, some design codes allow the use of an increased nominal strength or an increased expected strength.

The Steel Network is the only connector manufacturer in the US that has rated its connector products for special seismic and blast design by providing tables with LRFD design strength, nominal strength and ultimate strength for each connector. The tables are compatible with the acceptable increased material strength.

For further information regarding the background of special seismic and blast design and the selection the appropriate design strength of the connections, read the full Technical Note here.

Downloads Download Technical data Tech Sheet |
Product Information
MasterClip® Series
Connector (Application) Load Direction LRFD Design Strength (lbs) Nominal Strength (lbs) Ultimate Strength (lbs)
MasterClip VLB VLB600
(Vertical Deflection)
F1 364 405 661
F2 2,509 2,788 4,245

VLB600
(Rigid Connection)

F1 1,481 1,646 2,506
F2 3,297 3,664 5,579
F3 2,869 3,188 4,855
 
Notes:
  • Strength values provided are those of the clip only (one clip). Attachment to stud framing and to structure must be evaluated independently.
  • Nominal Strength is calculated as LRFD Strength divided by an average resistance factor of 0.9.
  • Ultimate Strength is the average maximum load obtained from tests.
  • When dynamic analysis is used for blast design, the Nominal Strength may be allowed to be increased by a Static Increase Factor (SIF) and a Dynamic Increase Factor (DIF).
VertiClip® Series
Connector Load Direction LRFD Design Strength (lbs) Nominal Strength (lbs) Ultimate Strength (lbs)
VertiClip SL SL362 F1 397 441 721
F2 1,696 1,885 2,680
SL400 F1 318 353 600
F2 1,817 2,019 3,074
SL600 F1 588 653 1,068
F2 2,691 2,990 4,251
SL800 F1 579 643 1,052
F2 2,994 3,327 4,730
SL1000 F1 664 738 1,206
F2 2,521 2,801 4,266
SL1200 F1 611 679 1,110
F2 2,863 3,182 4,845
VertiClip SLD SLD150 F2 82 91 139
SLD250 F2 254 282 430
SLD362/400 F2 575 639 973
SLD600 F2 648 720 1,302
SLD800 F2 1,091 1,212 1,844
VertiClip SLB SLB362 F1 364 405 661
F2 2,563 2,848 4,381
SLB600 F1 364 405 661
F2 2,563 2,848 4,381
SLB800 F1 357 397 604
F2 2,563 2,848 4,381
SLB1000 F2 2,266 2,517 4,112
SLB1200 F2 2,266 2,517 4,112
SLBxxx-10, -12 F2 2,266 2,517 4,112
VertiClip SLB-HD Icon SLB600-HD
(2) ¼” Screws
F1 374 416 679
F2 1,901 2,112 3,216
SLB600-HD
(1) ½" Anchor
F1 388 431 704
F2 1,606 1,785 2,718
VertiClip SLS SLS362/400-9, -12 F2 1,991 2,096 3,821
SLS600-12 F2 3,315 3,489 5,237
SLS600-15, -18, -20 F2 3,398 3,577 5,750
SLS600-24 F2 3,036 3,196 5,137
SLS800-12, -15, -18, -20 F2 2,909 3,062 4,922
VertiClip SLT SLT9.5 F1 546 575 991
F2 822 865 1,492
SLT(L) F1 784 825 1,422
F2 1,116 1,175 2,026
VertiClip Splice Splice600 F2 2,282 2,402 3,861
F3 3,888 4,092 6,578
Splice800 F2 2,282 2,402 3,861
F3 3,639 4,044 6,158
 
Notes:
  • Strength values provided are those of the clip only (one clip). Attachment to stud framing and to structure must be evaluated independently.
  • Nominal Strength is calculated as LRFD Strength divided by an average resistance factor of 0.9.
  • Ultimate Strength is the average maximum load obtained from tests.
  • When dynamic analysis is used for blast design, the Nominal Strength may be allowed to be increased by a Static Increase Factor (SIF) and a Dynamic Increase Factor (DIF).
DriftClip® & DriftTrak® Series
Connector Load Direction Fastener Pattern * LRFD Design Strength (lbs) Nominal Strength (lbs) Ultimate Strength (lbs)
DriftClip DSLB DSLB F2 1 1,467 1,630 2,317
2 916 1,018 1,663
DriftClip DSLS DSLS600-12 F2 1 2,980 3,311 4,707
2 2,788 3,098 4,405
DSLS600-15 F2 1 3,045 3,383 4,811
DSLS600-151 F2 2 3,045 3,383 5,008
DriftClip DSLD DSLD362 F2 1 186 207 317
2 85 94 141
DSLD600 F2 1 286 317 481
2 399 443 869
DSLD800 F2 1 318 354 578
2 293 326 858
DriftClip DSL DSL362 F2 1 796 884 1,320
2 397 441 720
DSL600 F2 1 1,242 1,380 2,254
2 1,840 2,044 3,051
DSL800 F2 1 1,666 1,851 3,023
DSL8001 F2 2 1,666 1,851 4,122
DriftTrak DTSL DTSL F2 8" Fastener Spacing - Pattern 1 1,001 1,112 1,807
8" Fastener Spacing - Pattern 2 770 856 1,303
16" Fastener Spacing - Pattern 1 1,338 1,487 2,264
16" Fastener Spacing - Pattern 2 774 860 1,309
DriftTrak DTSLB DTSLB 362/400, 600, 800 F2 8" Fastener Spacing -
Patterns 1 and 2
1,292 1,435 2,186
16" Fastener Spacing -
Patterns 1 and 2
1,206 1,340 2,040
DTSLB-HD 362/400, 600, 800 F2 8" Fastener Spacing -
Patterns 1 and 2
2,591 2,879 4,384
16" Fastener Spacing -
Patterns 1 and 2
1,640 1,822 2,775
DriftTrak DTLB DTLB600 F2 8" Fastener Spacing 1,292 1,435 2,186
F3 2,434 2,704 4,118
DTLB800 F2 8" Fastener Spacing 1,292 1,435 2,186
F3 2,434 2,704 4,118
 

Notes:

1 LRFD strength limited by fastener pattern 1.
* For Fastener Pattern, please refer to individual product page under tab for "Allowable Loads"

  • Strength values provided are those of the clip only (one clip). Attachment to stud framing and to structure must be evaluated independently.
  • Nominal Strength is calculated as LRFD Strength divided by an average resistance factor of 0.9.
  • Ultimate Strength is the average maximum load obtained from tests.
  • When dynamic analysis is used for blast design, the Nominal Strength may be allowed to be increased by a Static Increase Factor (SIF) and a Dynamic Increase Factor (DIF).
StiffClip® Series
Connector Load Direction LRFD Design Strength (lbs) Nominal Strength (lbs) Ultimate Strength (lbs)
StiffClip AL AL362 F1 1,177 1,308 2,137
F2 2,493 2,770 4,219
F3 4,522 5,025 7,652
AL600 F1 1,388 1,542 2,348
F2 3,493 3,882 5,911
F3 4,830 5,366 8,172
AL800 F1 2,827 3,141 4,784
F2 4,022 4,469 6,806
F3 9,798 10,887 16,579
StiffClip LB LB362 F1 1,481 1,646 2,506
F2 3,297 3,664 5,579
F3 4,256 4,729 7,202
LB600 F1 1,481 1,646 2,506
F2 3,297 3,664 5,579
F3 3,080 3,423 5,212
LB800 F1 1,993 2,214 3,617
F2 3,297 3,664 5,579
F3 6,188 6,875 10,470
LB800-4" Offset F1 1,993 2,214 3,617
F2 3,297 3,664 5,579
F3 2,496 2,773 4,223
LB1000 F1 1,465 1,627 2,658
F2 2,270 2,522 4,120
F3 2,872 3,191 4,859
LB1000-4" Offset F2 2,270 2,522 4,120
F3 2,506 2,784 4,240
LB1200 F1 1,465 1,627 2,658
F2 2,270 2,522 4,120
F3 3,041 3,379 5,146
StiffClip LB-HD Icon LB600-HD
(2)  ¼” Screws
F1 1,764 1,959 2,984
F2 1,810 2,011 3,062
F3 3,149 3,499 5,328
StiffClip HE HE(L)-43 mil F2 1,003 1,114 1,696
F3 4,901 5,446 8,293
HE(H)-68 mil F2 1,739 1,932 2,943
F3 8,880 9,867 15,026
HE(S)-68 mil F2 1,739 1,932 2,943
F3 4,753 5,281 8,043
StiffClip HS HS362 F2* 4,420 8,840 11,492
F3 1,773 1,970 3,000
HS600 F2* 6,630 13,260 17,238
F3 2,943 3,270 4,980
HS800 F2* 6,630 13,260 17,238
F3 3,885 4,317 6,574
StiffClip CL CL362/400-68 F1 2,267 2,519 4,122
F2 3,071 3,412 4,851
F3 1,842 2,047 3,349
M1 2,888 3,209 5,251
CL362/400-118 F1 3,880 4,311 6,129
F2 7,090 7,878 11,201
F3 3,611 4,012 6,565
M1 6,299 6,999 11,453
CL362/400-118H F1 4,160 4,622 6,572
F2 7,973 8,858 12,595
F3 9,150 10,167 14,455
M1 10,750 11,944 19,545
CL600-68 F1 2,275 2,528 3,594
F2 4,020 4,467 6,351
F3 1,932 2,147 3,513
M1 4,978 5,531 9,050
CL600-118 F1 4,131 4,590 7,147
F2 6,578 7,308 10,391
F3 3,561 3,956 6,474
M1 9,126 10,140 16,592
CL600-118H F1 6,659 7,399 10,520
F2 10,337 11,485 16,330
F3 9,620 10,689 15,197
M1 9,958 11,065 18,106
CL800-68 F1 2,298 2,553 3,630
F2 4,263 4,736 6,734
F3 1,724 1,916 3,135
M1 4,578 5,086 8,323
CL800-118 F1 5,375 5,972 8,491
F2 10,265 11,406 16,217
F3 4,270 4,744 8,291
M1 13,170 14,634 23,946
CL800-118H F1 7,713 8,570 12,185
F2 13,251 14,723 20,933
F3 11,925 13,250 18,839
M1 17,834 19,815 32,425
StiffClip TD TD F3 17,149 19,055 20,863
 

Notes:

  • Strength values provided are those of the clip only (one clip). Attachment to stud framing and to structure must be evaluated independently.
  • Nominal Strength is calculated as LRFD Strength divided by an average resistance factor of 0.9.
  • Ultimate Strength is the average maximum load obtained from tests.
  • When dynamic analysis is used for blast design, the Nominal Strength may be allowed to be increased by a Static Increase Factor (SIF) and a Dynamic Increase Factor (DIF).
  • Clip connectors or load directions marked with an (*) have their LRFD, nominal, and ultimate strength values all calculated using AISI S100-12 provisions.