HomeMy WebLinkAboutEngineering Submittal-DigiCert, Williams Residence, Generac 22KW Generator,10.26.21Model/Tag:22 KW Generac
Wind Speed: 170
Exposure: D
Risk Category:2
Engineering Submittal
Wind Load Certification
October 26, 2021
Williams Residence116 Island Dune WayJensen Beach, FL 34957
Job Name & Location:
Design Parameters:
FBC 2020 & ASCE 7-16
806 Delaware Ave. (772) 267-1399
Fort Pierce, FL 34946 benchmarkengineeringtc@gmail.com
Benchmark engineering
of the treasure coast LLc.
Model/Tag:22 KW Generac
Design Parameters
W 30 in (Min)
WL 15 in
WS 15 in
L 48 in (Max)
HRTU 29 in (Max)
HC 30 in (Max)
HFW 44.5 in
WCM 454 lb (Min)Fasteners:
VWIND 170 mph
Exp D Required Fastener Resistance on Critical Side
Max Ht.15 ft FR=1,141 LB
Wind Loading Per ASCE 7-16:
Wind Pressure Al Rack to Slab on Grade Fastener
QH=.00256 (KZ)(KZT)(KD)(VWIND)^2 (4) 1/4"x2" Tapcons @:2020 lb per (25% Manf.
KZ 1.03 Min. Number of Legs per Side 4 each Pull-Out
KZT 1.0 Total Number of Legs per Stand 8 each Rating
KD 0.85 Number of Fasteners per Base Plate:4 each
VWIND 170 mph
QH=64.8 lb/ft^2 Gen to Rack Fastener
3/8" SS Thru-Bolts @:1650 lb per (25% SS
Lateral Force Min. Number of Fasteners Near Corners:4 each Proof Rating)
FWL=QH (GCR) AF
GCR 1.9
AF 4.8 ft^2*
FWL=595 lb
Uplift
FWU=QH (GCR) AF
GCR 1.5
AF 10.0 ft^2
FWu=972 lb
Sum Moments Notes:1. Certification is for specified attachments only
MWL=26,470 in lb 2. Prefab slab on grade shall be 4" thick min.
MWU=14,574 in lb 3. Fasteners may be upsized or increased without comment
MWCM =-6,810 in lb
M=34,234 in lb
Bowdoin G. Hutchinson P.E.
FL # P.E. 70878