MECHANICAL ANCHORS FOR SEISMIC BRACING NFPA 13 seismic bracing anchor load tables
HILTI MECHANICAL ANCHORS AND CAST-IN ANCHORS FOR SEISMIC BRACING IN ACCORDANCE WITH NFPA 13 Hilti post-installed mechanical anchors and single point cast-in-place anchors are common, cost effective methods for attaching both structural and non-structural elements to concrete base materials. Non-structural elements, such as fire sprinkler pipes; electrical conduit and cable trays; heating, ventilation and air conditioning (HVAC) equipment and ductwork are especially suited for Hilti anchoring systems.
Anchorage for seismic bracing technical supplement Figure 2 — Sway brace load, Fpw, from typical sway brace configuration (Source: NFPA 13 2016 Edition Figure 9.3.5.12.1) Horizontal earthquake load design per NFPA-13 The maximum horizontal earthquake load, Fpw that will not exceed the allowable capacity of the anchor, can be derived from NFPA 13-16 Eq. A.9.3.5.12.2a: T + Tallow V ≤ 1.
Design Tables for Pre-calculated Horizontal Earthquake Load The design tables starting on page 7 determine the maximum horizontal load, Fpw, that will satisfy NFPA 13-16 Eq. A.9.3.5.12.2a, for various Hilti post-installed and cast-in anchors used in conjunction with various seismic brace swivel attachments to attach the sway brace to concrete. Notes: • Tallow and Vallow used as the calculation basis for Fpw in the tables are determined from a strength design calculation according to ACI 318-14 Ch.
Anchorage for seismic bracing technical supplement Design Example: We will use a carbon steel 1/2-in. diameter x 3-1/4-in. effective embedment depth Hilti KWIK Bolt TZ (KB-TZ) expansion anchor to attach a Hilti seismic lateral brace into 3,000 psi normal weight concrete. We will assume the concrete is cracked for the seismic design. We will assume the anchor is in the middle of a concrete slab (no edge or anchor spacing influence).
CONTENTS CARBON STEEL KWIK BOLT TZ 7 The Hilti KB-TZ is the most versatile anchor of the group and is most often used for pipe supports in seismic areas. The design capacity is the best of its class while remaining a cost effective solution that is easy to install. The anchor is available in 3/8-in.to 3/4-in. diameters and is supported by ICC-ES ESR-1917 and has FM and UL listings for fire-sprinkler applications.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Carbon steel Hilti KWIK Bolt TZ in 3,000 psi normal weight cracked concrete Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 2 3-1/4 in 4 6-1/2 in 6 9-3/4 in 6 6 Effective embed. Min. edge distance Min. spacing distance Min.
Maximum allowable pipe horizontal load, Fpw (lb) Carbon steel Hilti KWIK Bolt TZ in 4,000 psi normal weight cracked concrete Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 2 3-1/4 in 4 6-1/2 in 6 9-3/4 in 6 6 Effective embed. Min. edge distance Min. spacing distance Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Carbon steel Hilti KWIK Bolt TZ in 5,000 psi normal weight cracked concrete Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in in 2 3-1/4 in 4 6-1/2 in 6 9-3/4 in 6 6 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min.
Maximum allowable pipe horizontal load, Fpw (lb) Carbon steel Hilti KWIK Bolt TZ in 6,000 psi normal weight cracked concrete Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in in 2 3-1/4 in 4 6-1/2 in 6 9-3/4 in 6 6 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Carbon steel Hilti KWIK Bolt TZ in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck — 3-in W-deck profiles1 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in in 2 3-1/4 in 1 1 in 6 9-3/4 in 2-1/2 2-1/2 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min.
Maximum allowable pipe horizontal load, Fpw (lb) Carbon steel Hilti KWIK Bolt TZ in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck — 1-1/2-in B-deck profiles1 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in in 2 3-1/4 in 3/4 3/4 in 6 9-3/4 in 2-1/2 2-1/2 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCS-WF in 3,000 psi normal weight cracked concrete with Grade A36 threaded rod (or stronger) Nominal Effective anchor embed. internal dia. Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" Min. edge distance Min. spacing distance Min.
Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCS-WF in 4,000 psi normal weight cracked concrete with Grade A36 threaded rod (or stronger) Nominal Effective anchor embed. internal dia. Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" Min. edge distance Min. spacing distance Min. concrete thickness A B 30°-44° 45°-59° C 60°-74° 75°-90° D E F G H I 30°-44° 45°-59° 60°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr Pr Pr Pr Pr Pr Pr in in in in in 4.100 1.580 0.870 1.850 1.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCS-WF in 5,000 psi normal weight cracked concrete with Grade A36 threaded rod (or stronger) Nominal Effective anchor embed. internal dia. Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" Min. edge distance Min. spacing distance Min.
Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCS-WF in 6,000 psi normal weight cracked concrete with Grade A36 threaded rod (or stronger) Nominal Effective anchor embed. internal dia. Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" Min. edge distance Min. spacing distance Min. concrete thickness A B 30°-44° 45°-59° C 60°-74° 75°-90° D E F G H I 30°-44° 45°-59° 60°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr Pr Pr Pr Pr Pr Pr in in in in in 4.100 1.580 0.870 1.850 1.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-WF and KCM-PD in 3,000 psi normal weight cracked concrete Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.850 1.520 2.320 3.440 284 262 241 179 398 367 337 251 714 660 604 448 G 30°-44° Pr 3.710 142 199 356 H 45°-59° Pr 2.620 201 281 504 I 60°-90° Pr 2.140 246 344 618 Tolco™ Figure 909 seismic brace D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.
Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-WF and KCM-PD in 4,000 psi normal weight cracked concrete Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.850 1.520 2.320 3.440 329 303 279 207 460 424 390 290 790 712 673 518 G 30°-44° Pr 3.710 164 230 394 H 45°-59° Pr 2.620 232 325 558 I 60°-90° Pr 2.140 285 398 683 Tolco™ Figure 909 seismic brace D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.230 1.513 1.487 2.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-WF and KCM-PD in 5,000 psi normal weight cracked concrete Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.850 1.520 2.320 3.440 358 324 304 232 515 475 436 325 851 752 729 579 G 30°-44° Pr 3.710 178 257 425 H 45°-59° Pr 2.620 253 364 601 I 60°-90° Pr 2.140 309 446 736 Tolco™ Figure 909 seismic brace D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.
Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-WF and KCM-PD in 6,000 psi normal weight cracked concrete Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.850 1.520 2.320 3.440 380 339 325 254 564 520 477 355 903 785 777 634 G 30°-44° Pr 3.710 190 281 451 H 45°-59° Pr 2.620 269 398 638 I 60°-90° Pr 2.140 329 488 781 Tolco™ Figure 909 seismic brace D E F 75°-90° 30°-44° 45°-59° 60°-90° Pr Pr Pr Pr 1.230 1.513 1.487 2.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (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 in 3/8"-1/2" 3/8"-1/2"-5/8" Anchor size in 1/4"-3/8" 3/8"-1/2" 3/8"-1/2"-5/8" 5/8"-3/4" Anchor size in 1/4"-3/8" 3/8"-1/2" 3/8"-1/2"-5/8" 5/8"-3/4" Anchor size in 3/8"-1/2" Anchor size in 3/8"-1/2" 3/8"-1/2"-5/8" 5/8"-3/4" Min. Nominal Min. Min.
Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-MD in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck 1-1/2-in B-deck profiles 1,2 Hilti MQS-SP-L-1/2" and MQS-SP-T-1/2" Anchor size Min. Nominal Min. Min. edge A rod spacing concrete distance diameter distance thickness 30°-44° 3,000 psi B 4,000 psi C A B C 45°-59° 60°-74° 75°-90° 30°-44° 45°-59° 60°-74° Pr Pr Pr Pr Pr Pr Pr 75°-90° Pr in in in in in 4.100 1.580 0.870 1.850 4.100 1.580 0.
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