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Consuitants, inc.
MEMBRANE ATTACHMENT CALCULATIONS
Project Name
St. Lucie Battery
Report No.: ATRT-MB-20.143
Project Address
5500 Orange Avenue
Ft. Pierce, FL - 32947
Deck Substrate
Recover (Metal), Insulated
Mean Roof Height 20.3 Feet
Configuration
Low Slope
Roof Area (Approx.) 9090 Sq.Ft
Category
II
Mean Roof Width 87.0 Feet
Exposure Condition
C
Perimeter Width 8.1 Feet
Building Type
Enclosed
Parapet Height 0.0 Feet
Base Wind Speed
170 mph
Corner Zones 8.1' x 8.1' Each
Slope V
0.0 Slope H
12.0 Slope Angle° 0.00
Uplift Pressures
qZ - 0.00256 KZ Kt Kd V2
P qZ (GCP - GCP;)
qZ KZ
K:t Kd V
GCP GCP;
57.149 0.904
1.005 0.85 170
-1.00 0.18 Field
-1.80 0.18 Perimeter
-2.80 0.18 Corner
Field Pt Alt
-67.44 psf Pt asd
-40.46 psf
Perimeter P2 u,t
-113.16 psf P2 asd
-67.89 psf
Corner P3 pit.
-170.30 psf P3 asd-102.18
psf
Proposed System
Carlisle Sure -Weld TPO Single Ply Roof Systems
Product Approval No.
FL14083-R24 (Page 83
of 87) System No. R-64
System Design Pressure
-60 psf
Membrane Full Width
126 inches Side Lap
6 inches Net Width 120 inches
Membrane Red. Width
66 inches Side Lap
6 inches Net Width 60 inches
Membrane Red. Widtl-
66 inches Side Lap
6 inches Net Width 60 inches
Fasteners
Carlisle HP Purlin Fasteners and Piranha Plates (Fasten thru' roof assembly into purlins)
Fastener Spacing in
Lap of Membrane 6 inches
# Rows 1
Min. Characteristic Resistance Force-300.00 Ibf
Verify with TAS-105 Tests
Fastener Spacing {(MCRF/P;) x 144}/Row Spacing
Full Width Mmbrn Red. Width Mmbrn Red. Width Mmbrn
Field Fastener Spacing 8.90 17.79 17.79
Perimeter Fastener Spacing 5.30 10.60 10.60
Corner Fastener Spacing 3.52 7.05 7.05
RECOMMENDED MEMBRANE ATTACHMENT PATTERN
Field Laps @ 120" o.c. (max. Purlin Spacing) Full Width Sheet 6 inches on center
Perimeter Laps @ 60" o.c. (max. Purlin Spacing) Reduced Width Sheet 6 inches on center
Corner Laps @ 60" o.c. (max. Purlin Spacing) Reduced Width Sheet 6 inches on center
These calculations have been done in accordance with ASCE 7-10, based on the information provided by the
contractor. The roof system must be installed in accordance with the FBC & manufacturer's recommendations.
Ensure that roof system meets all fire rating & drainage requirements of Florida Building Code, before installation.
Verify that existing roof meets all FBC requirements to receive a recover roof, before installing new roof
Sincerely
Forie.
nsic Engineering Consultants, Inc.
R. N. Sailappah, P.E... li
Principal Engineer
Florida Registration No. 46696
Forensic Engineering.Consultantsjnc. (CA # 8265), P.O. Box 970034, Boca Raton, FL- 33497 Ph (561) 901 8490 Fax (561) 218 3830