HomeMy WebLinkAbout4 WAY EQ CALC - 23-00006 - Hibbard Elemenatry - Fire Sprinkler1
Seismic Brace Report
Project Name HIBBARD ELEMENTARY
Date 12/22/2022
Address 2413 N 3000 W
REXBURG, ID 83440
APPROVAL STAMP
Approved
Approved as Noted
Not Approved
Remarks:
Standard NFPA 13-2019
BRACE SUMMARY
Brace Name Drawing Reference Seismic Design
Load Structure Brace Description Fastener Attachments
4 WAY FP2 62 lbf..035 ¹Lateral Orientation A, B, D, & E 30° - 59°
1 NPS Sch 40
1/2" LAG BOLT ¹AF700 - 1/2"
AF001 - 2 1/2 NPS x 1 NPS
NOTE: Per NFPA 13-2019, all load capacities listed for fasteners installed in cracked concrete have been reduced based on the prying factors listed for ASC's swivel
attachments. Prying factors for NFPA fastener orientations “A” through “I” may be found in ASC's individual product submittal at asc-es.com
NFPA 13-2016 Product loads incorporate a minimum safety factor of 1.5. NFPA 13-2019 FM Product loads have been reduced to include a safety factor of 2.2 unless
noted in the applicable product submittal.
¹ This field entry has been defined by the end user. ASC Engineered Solutions has not verified it's load capacity for this application.
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4 WAY - SEISMIC BRACE CALCULATIONS
Seismic Project HIBBARD ELEMENTARY
Standard NFPA 13-2019
Brace Type Riser / 4-Way Brace Assembly - Wall Condition
Brace Name 4 WAY
Drawing Reference FP2
Approval Agency UL Listed
STRUCTURE INFORMATION
Structure CMU ¹
Substrate .035 ¹
BRACE INFORMATION
Brace Member 1 NPS Sch 40
Brace Length Max 10 ft 6 in
Brace Angle 30° - 59°
Least Radius of Gyration 0.421 in.
l/r Ratio Max 300
Max Horizontal Load 412 lbf.
FASTENER INFORMATION
Fastener Name LAG BOLT ¹
Fastener Orientation A, B, D, & E
Fastener Diameter 1/2 in.
Max Horizontal Load 100 lbf. ¹
SEISMIC BRACE ATTACHMENTS
Model Size Load Rating
Swivel Att.AF700 1/2"942 lbf.
Pipe Att.AF001 2 1/2 NPS x 1 NPS 340 lbf.
See Appendix A for alternate seismic brace attachments.
All seismic brace attachments manufactured by ASC Engineered Solutions.
SPRINKLER SYSTEM LOAD CALCULATION (FPW = CP*WP)
CP = 0.359
Qty Line Description Pipe Diameter/Type Length Weight per ft Weight
1 Main Braced Pipe 2 1/2 NPS Steel Sch 10 25.00 ft.5.89 lb/ft.147.25 lb.
Weakest Main Size Spacing Max Fpw
2 1/2 NPS Steel Sch 10 25 ft.513 lbf.
Total System Weight 147.25 lb.
System Design Weight (Wp)170.00 lb.
Horizontal Seismic Load (Fpw)62 lbf.
¹ This field entry has been defined by the end user. ASC Engineered Solutions has not verified it's load capacity for this application.
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Appendix A - Alternate Seismic Brace Attachments
4 WAY
Structural Attachment Structural Attach. Size Structural Attach. Capacity Swivel Pipe Attachment
--------AF035 2 1/2 NPS x 1 NPS | 625 lbf.
--------AF775 2 1/2 NPS x 1 NPS | 340 lbf.
--------AF730 2 1/2 NPS | 545 lbf.
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Appendix B - Enlarged Images
4 WAY
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Appendix C - Cp Calculations
BRACE CALCULATION DATA
Brace Name Brace Ref Method Cp Ss Site Fa SDS Z H
4 WAY FP2 A 0.359 0.350 ----------
CALCULATION METHODS
A Cp calculated per NFPA 13-2019 Table 18.5.9.3
B Cp entered by user
C Cp calculated per ASCE/SEI 7-16 per NFPA 13-2019 Section 18.5.9.4
Per NFPA 13-2019, the following values are always assumed for ap, Rp, and Ip:
ap Rp Ip
2.5 4.5 1.5
LEGEND
Fpw Seismic Horizontal Design Force
Cp Seismic Coefficient per NFPA
Ss Short Period MCEr Spectral Response Acceleration
Fa Site Coefficient. See Tables Below.
SDS Short Period Spectral Acceleration
ap Component Amplification Factor. Taken as 2.5 for Fire Sprinkler Applications
Rp Component Response Modification Factor. Taken as 4.5 for Fire Sprinkler
Applications
Ip Component Importance Factor. Taken as 1.5 for Fire Sprinkler Applications
Wp Component Operating Weight. Taken as the weight of the Fire Sprinkler System in
the ZOI plus 15%
z Height in the structure where the component attaches to the structure. Height is
relative to the base of the structure and shall not be taken as less than 0 and shall
not be larger than “H”.
h Average roof height of the structure relative to the base
EQUATIONS
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SITE COEFFICIENT, FA PER ASCE/SEI 7-16
Ss ≤ 0.25 Ss = 0.5 Ss = 0.75 Ss = 1 Ss = 1.25 Ss ≥ 1.5
A 0.8 0.8 0.8 0.8 0.8 0.8
B 0.9 0.9 0.9 0.9 0.9 0.9
C 1.3 1.3 1.2 1.2 1.2 1.2
D 1.6 1.4 1.2 1.1 1 1
E 2.4 1.7 1.3 1.2 1.2 1.2
Use straight-line interpolation for intermediate values of Ss.
SITE CLASSIFICATION PER ASCE/SEI 7-16
Site Class Ground Structure
A Hard Rock
B Rock
C Very Dense Soil and Soft Rock
D Stiff Soil
E Soft Clay Soil
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Appendix D - Bill of Materials
Project Name HIBBARD ELEMENTARY
Code Requirements NFPA 13-2019
Last Updated December 22, 2022
QUANTITY FIGURE NUMBER PRODUCT DESCRIPTION
1/2" LAG BOLT Fastener
AF700 1/2" AF700 Universal Swivel Attachment AF700 - 1/2"
AF001 2 1/2 NPS AF001 Q Brace Clamp AF001 - 2 1/2 NPS x 1 NPS