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SCANNED
BY
St. Lucie Count,,
DESIGN CALCULATIONS
FOR
TC CUSTOM HOMES
WALL -MOUNTED SIGNS
10993 S US Hwy1— Port St. Lucie
GENERAL NOTES:
1. Design is in accordance with the Florida Building Code 5th Edition (2014) 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.
5. 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 2010 Aluminum Design Manual, Part 1.
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
Pg 2 Wind Loads
Pg 3 Anchor Design
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Enginee sigr�atur and. al valid
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/SCE 7-10 Design Wind Loads
WALL -MOUNTED SIGNS
Building Specs
V = 160 mph Basic wind speed
Exposure C
Calculations
a=9.5 3-sec gust speed power law exponent
Ze = 900, Nominal ht. of atmos. boundary layer
Gcpi = 0 Internal pressure coeff
CALCULATIONS FOR WALL -MOUNTED SIGNS
ASD Load Combo Coeff: 0.6
Kd = 0.85 Directionalityfactor
Kzt= 1.0 Topographicfactor
A = 10 sq ft Tributary area
160 mph - Exp "Cl'
WALL -MOUNTED SIGNS
ASD WIND PRESSURES
SIGN
CENTER
CORNER
(EIGHT
(Zone 4)
(Zone 5)
Y
qz
n
a
a
�fT
Y
15 ft
31.2 psf
39.7 psf
0.85
47.3
-1.10
-1.40
20 ft
33.2 psf
42.2 psf
0.90
50.2
-1.10
-1.40
25 ft
34.8 psf
44.2 psf
0.95
52.7
-1.10
-1.40
30 ft
36.1 psf
46.0 psf
0.98
54.7
-1.10
1.40
35 ft
37.3 psf
47.5 psf
1.01
56.5
-1.10
-1.40
40 ft
38.4 psf
48.9 psf
1.04
58.1
-1.10
-1.40
45 ft
39.3 psf
50.1 psf
1.07
59.6
-1.10
-1.40
50 ft
40.2 psf
51.2 psf
1.09
60.9
-1.10
-1.40
55 ft
41.0 psf
52.2 psf
1.12
62.2
-1.10
-1.40
60 ft
41.8 psf
53.2 psf
1.14
63.3
-1.10
-1.40
70 ft
35.3 psf
70.6 psf
1.17
65.4
-0.90
-1.80
80 ft
36.3 psf
72.6 psf
1.21
67.3
-0.90
-1.80
90 ft
37.2 psf
74.5 psf
1.24
69.0
-0.90
-1.80
100 ft
38.1 psf
76.1 psf
1.27
70.5
-0.90
-1.80
110 ft
38.8 psf
77.7 psf
1.29
71.9
-0.90
-1.80
120 ft
39.6 psf
79.1 psf
1.32
73.3
-0.90
-1.80
130 ft
40.2 psf
80.5 psf
1.34
74.5
-0.90
-1.80
140 ft
40.9 psf
81.7 psf
1.36
75.7
-0.90
-1.80
150 ft
41.5 psf
82.9 psf
1.38
76.8
-0.90
-1.80
175 ft
42.8 psf
85.7 psf
1.42
79.3
-0.90
-1.80
200 ft
44.1 psf
88.1 psf
1.46
82.6
-0.90
-1.80
250 ft
46.2 psf
92.3 psf
1.53
85.5
-0.90
-1.80
Page 2
yseats
Wall Sign Anchor Design
Structure Dimensions & Loading
Design wind pressure:
Sign type:
Sign size:
Wall material:
Anchor type/size:
CALCULATIONS FOR WALL -MOUNTED SIGNS
P = 46.0 psf
Channel Letter
A = 11.0 sqft (per letter, critical)
Wood CDX or equiv, thickness to match Min Embed
#14 SMS
Ref: APA E830E Fastener Loads for Plywood
Min Embedment: 0.5"
Min edge dist: 2" Min Spacing: 2"
Anchor tensile capacity: Tcap = 112.0 lb (per anchor)
Check Anchors for Pullout
Total Reaction: Rt= 508 lb ... =P*A (per letter)
No. of anchors req'd: n = 4.5 anchors per letter ... = Rt/Tcap
Total anchors required: 5 anchors per letter
Ok, critical anchor option shown.
Ref anchor schedule for other anchor options.
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Page 3