MECHANICAL ANCHORS FOR SEISMIC BRACING NFPA 13 seismic bracing anchor load tables
Anchorage for seismic bracing technical supplement 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.
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 and NFPA 13 2019 Edition Figure 18.5.12.1) 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 and NFPA 13-19 Eq. A18.5.12.2a: T + Tallow V ≤ 1.
Anchorage for seismic bracing technical supplement Design Tables for Pre-calculated Horizontal Earthquake Load The design tables starting on page 8 determine the maximum horizontal load, Fpw, that will satisfy NFPA 13-16 Eq. A.9.3.5.12.2a and NFPA 13-19 Eq. A18.5.12.2a, 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.
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 TZ2 (KB-TZ2) 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).
Anchorage for seismic bracing technical supplement CONTENTS CARBON STEEL KWIK BOLT TZ2 8 The Hilti KB-TZ2 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 easier to install. The anchor is available in 3/8-in.to 3/4-in. diameters and is supported by ICC-ES ESR-4266 and has FM and UL listings for fire-sprinkler applications.
Anchorage for seismic bracing technical supplement CONTENTS KCM-MD 26 The KCM-MD cast-in anchor has been optimized for installation in concrete over metal deck applications. With a short plate option for direct installation on the deck or a long plate option to span the lower flutes, the KCM-MD has tremendous flexibility for the fire sprinkler pipe installer. Short plate anchors are shown in this supplement.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) carbon steel Hilti KWIK Bolt TZ2 in 3,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 TZ2 in 4,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 TZ2 in 5,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 TZ2 in 6,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 TZ2 in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck — 2-in and 3-in W-deck profiles1,2 Nominal anchor dia. Effective embed. Min. edge distance in in 1-1/2 2 2-1/2 3-1/4 in 1 1/4 1 1/4 1 1/4 1 1/4 Nominal anchor dia. Effective embed. Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) carbon steel Hilti KB1 in 3,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 KB1 in 4,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 KB1 in 5,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 KB1 in 6,000 psi normal weight cracked concrete1 Nominal anchor dia. in 1/2 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 3/8 1/2 5/8 3/4 Nominal anchor dia. in 1/2 Nominal anchor dia. in 1/2 5/8 3/4 Nominal anchor dia. in 1/2 5/8 3/4 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 KB1 in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck — 2-in and 3-in W-deck profiles1,2 Nominal anchor dia. Effective embed. Min. edge distance in in 2 3-1/4 in 1 1/4 1 1/4 Nominal anchor dia. Effective embed. Min. edge distance in 3/4 in 1-1/2 2 2 3-1/4 2-3/4 4 3-1/4 in 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 Nominal anchor dia. Effective embed.
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)1 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 1/2 in 1.63 in 4-1/4 in 5 in 5 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 3/8 1/2 5/8 3/4 in 1.11 1.63 1.90 1.
Anchorage for seismic bracing technical supplement 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)1 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 1/2 in 1.63 in 4 in 5 in 5 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 3/8 1/2 5/8 3/4 in 1.11 1.63 1.90 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)1 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 1/2 in 1.63 in 3-1/2 in 5 in 5 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 3/8 1/2 5/8 3/4 in 1.11 1.63 1.90 1.
Anchorage for seismic bracing technical supplement 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)1 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 1/2 in 1.63 in 3-1/4 in 5 in 5 Nominal anchor dia. Effective embed. Min. edge distance Min. spacing distance Min. concrete thickness in 3/8 1/2 5/8 3/4 in 1.11 1.63 1.90 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 concrete1,2 Min. Nominal Min. A Anchor Min. edge rod spacing concrete rod distance 30°-44° diameter distance thickness Pr in in in in in 4.100 1/2 Gr.36 4-1/4 5 5 151 3/8 - 1/2 1/2 Gr.105 4-1/4 5 5 151 (1) 3/8 - 1/2 - 5/8 1/2 Gr.105 5-1/4 6-1/4 5 211 3/8 - 1/2 - 5/8 - 3/4 1/2 (1) Gr.105 7-1/2 9 5 376 B 45°-59° Pr 1.580 318 318 445 777 Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-WF and KCM-PD in 4,000 psi normal weight cracked concrete1,2 Min. Nominal Min. A Anchor Min. edge rod spacing concrete rod distance 30°-44° diameter distance thickness Pr in in in in in 4.100 1/2 Gr.36 4-1/4 5 5 174 3/8 - 1/2 1/2 Gr.105 4-1/4 5 5 174 (1) 3/8 - 1/2 - 5/8 1/2 Gr.105 5 6-1/4 5 244 3/8 - 1/2 - 5/8 - 3/4 1/2 (1) Gr.105 6-1/2 9 5 425 B 45°-59° Pr 1.580 360 367 514 853 Min. Nominal Min.
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 concrete1,2 Min. Nominal Min. A Anchor Min. edge rod spacing concrete rod distance 30°-44° diameter distance thickness Pr in in in in in 4.100 1/2 Gr.36 4-1/4 5 5 192 3/8 - 1/2 1/2 Gr.105 4-1/4 5 5 194 (1) 3/8 - 1/2 - 5/8 1/2 Gr.105 5 6-1/4 5 272 3/8 - 1/2 - 5/8 - 3/4 1/2 (1) Gr.105 5-3/4 9 5 465 B 45°-59° Pr 1.580 387 411 575 914 Min. Nominal Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCM-WF and KCM-PD in 6,000 psi normal weight cracked concrete1,2 Min. Nominal Min. A Anchor Min. edge rod spacing concrete rod distance 30°-44° diameter distance thickness Pr in in in in in 4.100 1/2 Gr.36 4-1/4 5 5 206 3/8 - 1/2 1/2 Gr.105 4-1/4 5 5 213 (1) 3/8 - 1/2 - 5/8 1/2 Gr.105 5 6-1/4 5 298 3/8 - 1/2 - 5/8 - 3/4 1/2 (1) Gr.105 5-1/4 9 5 500 B 45°-59° Pr 1.580 410 450 630 964 Min. Nominal Min.
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 2-in and 3-in W-deck profiles1,2,3 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 Anchor size in 3/8 - 1/2 3/8 - 1/2 - 5/8 5
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCC-WF in 3,000 psi normal weight cracked concrete with grade 105 or A193 B7 threaded rod1 Anchor size in KCC-WF Anchor size in KCC-WF Anchor size in KCC-WF Min. Nominal Min. Min. edge rod spacing concrete distance diameter distance thickness in 1/2 in 5-1/4 in 6-1/4 in 5 Min. Nominal Min. Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCC-WF in 4,000 psi normal weight cracked concrete with grade 105 or A193 B7 threaded rod1 Anchor size in KCC-WF Anchor size in KCC-WF Anchor size in KCC-WF Min. Nominal Min. Min. edge rod spacing concrete distance diameter distance thickness in 1/2 in 5 in 6-1/4 in 5 Min. Nominal Min. Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCC-WF in 5,000 psi normal weight cracked concrete with grade 105 or A193 B7 threaded rod1 Anchor size in KCC-WF Anchor size in KCC-WF Anchor size in KCC-WF Min. Nominal Min. Min. edge rod spacing concrete distance diameter distance thickness in 1/2 in 5 in 6-1/4 in 5 Min. Nominal Min. Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCC-WF in 6,000 psi normal weight cracked concrete with grade 105 or A193 B7 threaded rod1 Anchor size in KCC-WF Anchor size in KCC-WF Anchor size in KCC-WF Min. Nominal Min. Min. edge rod spacing concrete distance diameter distance thickness in 1/2 in 4-3/4 in 6-1/4 in 5 Min. Nominal Min. Min.
Anchorage for seismic bracing technical supplement Maximum allowable pipe horizontal load, Fpw (lb) Hilti KCC-MD in the soffit of 3,000 psi or 4,000 psi lightweight concrete over metal deck 2-in and 3-in W-deck profiles with grade 105 or A193 B7 threaded rod1,2 Anchor type KCC-MD-SP KCC-MD-LP Anchor type KCC-MD-SP KCC-MD-LP Anchor type KCC-MD-SP KCC-MD-LP Anchor type KCC-MD-SP KCC-MD-LP Anchor type KCC-MD-SP KCC-MD-LP Anchor type KCC-MD-SP KCC-MD-LP Nominal rod diameter Min.
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