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DESIGN CALCULATIONS
Z�UHNNED
BY
brie county
FOR FILE
CO
GARBER RUICK GMC
22" LETTERS: "Pre -Owned"
5255 U.S. 1— Fort Pierce
GENERAL NOTES:
1. Design is in accordance with the 2010 Florida Building Code for use within
and outside the High Velocity Hurricane Zone (HVHZ).
2. Wind loads have been calculated per the requirements of ASCE 7-10 as
shown herein.
3. These engineering calculations pertain only to the structural integrity of
those systems, components, and/or other construction explicitly specified
herein and/or in accompanying engineering drawings. The existing host
structure (if any) must be capable of supporting the loaded system as
verified by building department or architect / engineer of record. No
warranty, either expressed or implied, is contained herein.
4. System components shall be as noted herein. All references to named
components and installation shall conform to manufacturer's or industry
specifications as summarized herein.
S. Where site conditions deviate from those noted herein, revisions may be
required or a separate site -specific engineering evaluation performed.
6. Aluminum components in contact with steel or embedded in concrete shall
be protected as prescribed in the 2005 Aluminum Design Manual, Part 1A.
Steel components in contact with, but not encased in, concrete shall be
coated, painted, or otherwise protected against corrosion.
7. Engineer seal affixed hereto validates structural design as shown only. Use
of this specification by contractor, et. Al, indemnifies and saves harmless
this engineer for all costs & damages'including legal fees & apellate fees
resulting from deviation from this design.
Index:
Pg 1 Cover
Pg2 Wind Loads
Pg 3 Anchor Design
Engineer's signature and seal valid
for pages 1 through —�s
Christian Langley
Easy Seals
5
PE # 67382
Auth # 29531
FederalHwy, moo EasySeals.com Page 1
Bocaoca Raton, FL 33432
Q, hasy Seals
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ASCE 7-10 Design Wind Loads
WALL -MOUNTED SIGNS
Building Specs
V = 160 mph Basic wind speed
Exposure C
CALCULATIONS FOR WALL -MOUNTED SIGNS
ASO Load Combo Coeff: 0.6
CalculationsI L E GiA jr
a = 9.5 3-sec gust speed power law exponen[� Kd = 0.85 Directionalityfactor
zg = 900' Nominal ht. of atmos. boundary layer Kzt = 1.0 Topographic factor
Gcpi = 0 Internal pressure coeff
160 mph - Exp
"C"
WALL -MOUNTED SIGNS
ASD WIND PRESSURES
SIGN
CENTER
CORNER
HEIGHT
(Zone 4)
(Zone 5)
15 ft
31.2 psf
39.7 psf
20 ft
33.2 psf
42.2 psf
25 ft
34.8 psf
44.2 psf
30 ft
36.1 psf
46.0 psf
35 ft
37.3 psf
47.5 psf
40 ft
38.4 psf
48.8 psf
45 ft
39.3 psf
50.1 psf
Soft
40.2 psf
51.2 psf
55 ft
41.0 psf
52.2 psf
60 ft
41.8 psf
53.2 psf
70 ft
35.3 psf
70.6 psf
80 ft
36.3 psf
72.6 psf
90 ft
37.2 psf,
74.5 psf
100 ft
38.1 psf
76.1 psf
110 ft
38.8 psf
77.7 psf
120 ft
39.6 psf
79.1 psf
130 ft
40.2 psf
80.5 psf
140 ft
40.9 psf
81.7 psf
150 ft
41.5 psf
82.9 psf
175 ft
42.8 psf
85.7 psf
200 ft
44.1 psf
88.1 psf
250 ft
46.2 psf
92.3 psf
A = 10 sq ft Tributary area
u
Y Y
q:
a
((D d'
n
(D '^
0.85
47.3
-1.10
-1.40
0.90
50.2
-1.10
-1.40
0.95
52.7
-1.10
-1.40
0.98
54.7
-1.10
-1.40
1.01
56.5
-1.10
-1.40
1.04
58.1
-1.10
-1.40
1.07
59.6
-1.10
-1.40
1.09
60.9
-1.10
-1.40
1.12
62.2
-1.10
-1.40
1.14
63.3
-1.10
-1.40
1.17
65.4
-0.90
-1.80
1.21
67.3
-0.90
-1.80
1.24
69.0
-0.90
-1.80
1.27
70.5
-0.90
-1.80
1.29
71.9
-0.90
-1.80
1.32
73.3
-0.90
-1.80
1.34
74.5
-0.90
-1.80
1.36
75.7
-0.90.
-1.80
1.38
76.8
-0.90
-1.80
1.42
79.3
-0.90
-1.80
1.46
81.6
-0.90
-1.80
1.53
' 85.5
-0.90
-1.80
Page 2
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1
Wall Sign Anchor Design
Structure Dimensions & Loading
Design wind pressure:
Sign type:
Sign size:
CALCULATIONS FOR WALL -MOUNTED SIGNS
P = 46.0 psf
Channel Letter
A = 3.3 sgft (per letter, critical)
Wall material: Wood CDX or equiv, thickness to match Min Embed
Anchor type/size: 1/4" Toggle Bolt (r)
Ref: Powers Toggle Bolt, catalog
Min Embedment: 0.5"
Min edge dist: 2" Min Spacing: 1.5"
Anchor tensile capacity: Tcap= 87.5 lb (peranchor)
Check Anchors for Pullout
Total Reaction: Rt = 154 lb ... = P*A (per letter)
No. of anchors req'd: n = 1.8 anchors per letter ... = Rt/Tcap
Total anchors required: 2 anchors per letter
OK, critical anchor option shown.
Use min (3) anchors per letter.
Page 3