HomeMy WebLinkAboutDESIGN CALCULATIONS21 =41, , VYAF
GENERAL NOTES:
Seats
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DESIGN CALCULATIONS
FOR
FLORIDA TURNPIKE
WALL -MOUNTED SIGNS
Port St Lucie, FL
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) is assumed to be in good condition,
capable of supporting the loaded system, subject to building department
approval. 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 &
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6GANNED
BY
St. Lucie Countv
THE&E PLANS AND ALL PROPMM t!'IVIR'
ARE SUBJECT TO ANY CUOPRECTIONS
`KQUIRED BY FIELD INSPECTORS THAT
MAY BE NECESSARY IN MEIEr TO
COMPLY WITH ALL APPLICABLE CMES.
Index:
Pg 1 Cover
Pg 2 Wind Loads
Pg 3 Anchor Design
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ASCE 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
zg = 900, Nominal ht. of otmos. boundary layer
Gcpi = 0 Internal pressure coeff
CALCULATION' OR WALL -MOUNTED SIGNS
ASD Load Combo Coeff: 0.6
Kd = 0.85 Directionality factor
Kzt= 1.0 Topographicfactor
A = 10 sq ft Tributary area
160 mph - Exp
"C"
WALL -MOUNTED SIGNS
ASD WIND PRESSURES
SIGN
CENTER
CORNER
HEIGHT
(Zone4)
(Zone5)
n
Y Y
q,
a
U v
n
U N
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
48.8 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
soft
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
9011
37.2 psf
74.5 psf
1.24
69.0
-0.90
-1.80
100 It
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
81.6
-0.90
-1.80
250 ft
46.2 osf
92.3 osf
1.53
85.5
-0.90
-1.80
Page 2
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Wall Sign Anchor Design
Structure Dimensions & Loading
Design wind pressure:
Sign type:
Sign size:
CALCULATION;, 'OR WALL -MOUNTED SIGNS
P = 48.8 psf
Cabinet
A= 114.6 sgft (entire cabinet)
Wall material: Masonry (ASTM C90, 1,500 psi min)
Anchor type/size: 3/8" Expansion Anchor
Ref: Powers Power -Bolt, catalog
Min Embedment: 1.5"
Min edge dist: 12" Min Spacing: 4.5"
Anchor tensile capacity: Tcap = 295.0 lb (per anchor)
Check Anchors for Pullout
Total Reaction: Rt= 5596 lb ... =P*A (entire cabinet)
No. of anchors req'd: n = 19.0 total anchors ... = Rt/cap
Total anchors required: 19 total anchors balanced over cabinet
OK, use (4) per bracket = (40) anchors total.
Page 3