HomeMy WebLinkAboutApproved, 2021 Windload SheetENGINEER:
JOHN ALGER
4105 SAINT JOHN'S PARKWAY
SANFORD, FL 32771
Table R301.2(2) interpolated to effective area of 31sq ft module or collector
Component and Cladding loads for a building with a Mean Roof height of 30ft
located in exposure B ( ASD) (psf) and for Gable Roofs
all number are PSF
Gable
Roof Pitch
Roof
Zone
130
140
150
160
170
175
down
up
down
up
down
up
down
up
down
up
down up
1,1'
10
-21.4
10
-29.7
10
-34.2
10
-38.9
11.9
-43.9
12.6
-46.6
0 to 7
2
10
-31
10
-39.4
10
-45.3
10
-51.5
11.9
-58.1
12.6
-61.6
degrees
1 3
10
-43.5
10
-50.5
10
-57.9
10
-65.9
11.9
-74.5
12.6
-79
1,2e
11.6
-33.3
13.5
-38.6
15.5
-44.3
15.5
-50.3
20
-56.9
21.2
-60.4
7 to 20
2n,2r,3e
11.6
-41.5
13.5
-48.9
15.5
-56.1
15.5
-63.8
20
-72.1
21.2
-76.5
degrees
3r
11.6
-49.7
13.5
-57.7
15.5
-66.2
15.5
-75.3
20
-85
21.2
-90.2
1,2e
11.6
-25.9
13.5
-30
15.5
-34.4
15.5
-39.1
20
-44.2
21.2
-46.9
20 to 27
2n,2r,3e
11.6
-36.1
13.5
-41.8
15.5
-48.1
15.5
-54.7
20
-61.7
21.2
-65.5
degrees
3r
11.6
-41.1
13.5
-47.6
15.5
-54.7
15.5
-62.3
20
-70.2
21.2
-74.5
1,2e,2r
14.7
-25.8
17.1
-29.9
19.7
-34.3
19.7
-39
25.3
-44
26.8
-46.7
27 to 45
2n,3r
14.7
-29.9
17.1
-34.7
19.7
-39.9
19.7
-45.4
25.3
-51.2
26.8
-54.4
degrees
3e
14.7
-36.6
17.1
-42.5
19.7
-48.7
19.7
-55.4
25.3
-62.5
26.8
-66.3
Table R301.2(2) interpolated to effective area of31sq ft module or collector all number are PSF
Component and Cladding loads for a building with a Mean Roof height of 30ft
located in exposure B ( ASD) (Dsf) and for Hip Roofs
Hip
Roof Pitch
Roof
Zone
130
140
150
160
170
175
down
up
down
up
down
up
down
up
down
up
down up
1
11.6
-30.4
13.5
-35.2
15.5
-40.5
17.7
-46
20
-51.9
21.2
-55.1
7 to 20
211
11.6
-35.7
13.5
-41.5
15.5
-47.7
17.7
-54.1
20
-61.2
21.2
-64.9
degrees
2e,3
11.6
-38.5
13.5
-44.6
15.5
-51.2
17.7
-58.3
20
-65.8
21.2
-69.8
20 to 27
1
11.6
-22.9
13.5
-25
15.5
-28.6
17.7
-32.6
20
-36.8
21.2
-39.1
degrees
2e,2r,3
11.6
-29.9
13.5
-34.7
15.5
-39.9
17.7
-45.4
20
-51.2
21.2
-54.4
1
11.3
-22.9
13.2
-26.6
15
-34.5
17
-34.7
19.3
-39.2
20.5
-41.6
2e
11.3
-24.11
13.2
-27.9
15
-32.1
17
-36.5
19.3
-41.3
20.5
-43.8
27 to 45
2r
11.3
-32.51
13.2
-37.8
15
-43.3
17
-49.41
19.3
-55.7
20.5
-59.1
degrees
3
11.3
-311
13.2
-35.9
15
-41.2
17
-46.81
19.3
-531
20.5
-56.2
Table R301.2(3)
Height and Exposure Adjustment coefficients for Tables R301.2(2)
Mean Roof Height
(ft)
EXPOSURE CATEGORY
B
C
D
15
0.82
1.21
1.47
20
0.89
1.29
1.55
25
0.94
1.35
1.61
30
1
1.4
1.66
Multiply values in Tables R301.s(2) by the appropriate adjustment factor to obtain the correct
wind pressures for the relevant roof zones.
Strapping/bolt table to size for PSF pressures
Assuming 1/4 x 4" SS lag bolt or equivalent with 3-1/2"
embedment into Southern Yellow Pine with SG=.5.
Bolt length Strapping Max pressure
4" (3-1/2" thread) 3 straps up to 43psf
4" (3-1 /2"thread) 4 straps 44 to 65psf
PSF values calculated using withdrawal figures from the Amer-
ican Wood Council with a Safety Factor of 1.6. Strapping is
rated to 2000 Ibs tensile and calculates to a pressure limit of 69
psf with standard strapping and 104 psf with HVHZ strapping
using a 1.6 factor. The lag is the limiting factor in the mounting
system.
Pressures above 65 psf require 5 straps. Consult LE Engineering for specifics
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PROVIDER:
THE LEVEREDGE
1423 Gunn Highway
Odessa, FL33556
813.403 5100
Certificate of
Authorization A:31930
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FlOURE RSO1,2(7)
COMPONENT AND CLADDING PARMRH ZONE$
PH 800-929-3919 X1411
jalger@theleveredge.com
State License # 74730
DRAWN BY:
JOHN ALGER, PE
DATE: 01/24/17 3:46 PM
2-LDR-PP
Rev. 1.5.21
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BILVA7f0' ,N
Reprinted from the 2020 Florida Building Code 7th Ed Residential
............................................................................................................
This page is part of a digitally signed
PDF and is sealed by the Cover Page.
The set was sealed by John Alger, P.E.
on the date and/or time stamp shown
using Identrust signature. Printed copies
are not considered signed and sealed.
A-102