HomeMy WebLinkAboutEngineering Submittal-DigiCert,Model/Tag:CH-1,2
Wind Speed: 160
Exposure: C
Risk Category:2
Engineering Submittal
Wind Load Certification
January 6, 2020
Treasure Coast Hospice5090 NW Dunn Rd.Fort Pierce, FL 34981
Job Name & Location:
Design Parameters:
Rev 4.8.20 per SLCBD: Add Custom Rack Calcs.
FBC 2017 & ASCE 7-10
806 Delaware Ave. (772) 267-1399
Fort Pierce, FL 34946 benchmarkengineeringtc@gmail.com
Benchmark engineering
of the treasure coast LLc.
Wind Load/Fastener Calcs.
Model/Tag:CH-1,2
Design Parameters
W 88 in (Min)
WL 44 in
WS 44 in
L 143 in (Max)
HRTU 93 in (Max)
HC 36 in (Max)
HFW 64.5 in
WCM 5607 lb (Est)Fasteners:
VWIND 160 mph Required Fastener Resistance on Critical Side
Exp C FR=10,137 LB
Max Ht.60 ft
Rack to Roof Deck Fastener
Wind Loading Per ASCE 7-10: Deck Type: 3000 psi Min. Concrete
Selected Fastener:
Wind Pressure 3/8" Hilti Kwik HUS w/ 3-1/4" Min Emb 2093 lb per
QH=.00256 (KZ)(KZT)(KD)(VWIND)^2 Number of Fasteners per Base Plate:4 each
KZ 1.13 Total Number of Fasteners Per Rack:12 each
KZT 1.0
KD 0.9 CH to Curb Fastener
VWIND 160 mph 3/8" SS Thru Bolts @:1650 lb per
QH=66.7 lb/ft^2 Min. Number of Fasteners per Long Side:8 each
Max Fastener Spacing @:16.0 in
Lateral Force
FWL=QH (GCR) AF Check Custom Rack
GCR 1.9 Lateral Load per Leg (Governs)1949 lb
AF 92.4 ft^2*5.625" Sch 40 6160 AL Round Pipe 15.93 in^4
FWL=11,695 lb Max Def 0.19 in
Max Stress 12.3 K
Uplift Column Load per Leg 2184.2 lb
FWU=QH (GCR) AF Max Allow 11.5 K
GCR 1.5 I-Beam (Worst Case Longest Span)29 lb/in
AF 87.4 ft^2 12x7 (11.72 #/") 6160 AL I-Beam 255.6 in^4
FWu=8,737 lb Max Def 0.0007 in
Max Stress 0.0067 K
Sum Moments
MWL=754,346 in lb Notes:1. Certification is for specified attachments only
MWU=384,416 in lb 2. Roof structure & Pipe integrity by others
MWCM =-246,708 in lb 3. Where concrete roof deck is less than 4" thick, use
M=892,054 in lb 3/8" thru bolts with thick fender washers
4. Fastener spacing may be adjusted with max spacing
Bowdoin G. Hutchinson P.E.
FL # P.E. 70878
(Manf. Pull-Out
Design Rating)
(25% Proof
Tensile Rating)
(FWL/6 @ HFW
SF=3:1 OK
SF=5.2:1 OK
(FWu & Wcm
SF=100+:1 OK
g of 30"