HomeMy WebLinkAboutBASE SHEET ATTACHEMNT CALCULATIONSForensic Engineering Consultants, Inc.
BASE SHEET ATTACHMENT CALCULATIONS
Project Name Rosser Library Report No.: TRS-BS-16.001
Project Address 2950 SW Rosser Boulevard
Port St. Lucie, FL - 34953
Deck Substrate Steel Insulated SCANNED Mean Roof Height 16.0 Feet
Configuration Low Slope BY Roof Area (Approx.) 18733 Sq.Ft.
Category III St, LUCIe COU"ty Roof Width 107.0 Feet
Exposure Condition C Perimeter Width 6.4 Feet
Building Type Enclosed Parapet Height 4.0 Feet
Base Wind Speed 180 mph
Slope V 0.0 Slope H 12.0 Slope Angle° 0.00
Uplift Pressures q� = 0.00256 K� Kr Kd V2 P ' = q, (GCP - GCP;)
qz K. Kn Kd V GCP GCP;
COMB FAST S OR OMM 0.85 180 -1.00 0.18 Field
-1.80 0.18 Perimeter
ARE THE RESPONSIBILlf Y OF THE -1.80 0.18 Corner
Field CONTRAq•�OR OF R 1.95 psf P1 asd -43.17 psf THESE PLANS AND ALL PROPOSED WORK
Perimeter P2un.-120.72 psf P2asd -72.43 psf ,` ARE SUBJECT TO ANY CORRECTIONS
Corner P3 un.-120.72 psf P3 asd -72.43 psf REQUIRED BY FIELD INSPECTORS THAT
Proposed System Johns Manville Modified Bitumen SBS R&WeNMUM68IMORDER TO =m
Product Approval No. FL2948-R10 (Page 17 of 48) System'G@{WITH ALLAPPLICA®LE CODES.''
System Design Pressure -60 psf
Fasteners-UltraFast Fasteners or All Purpose Fasteners with UltraFast Metal Plates
Base Sheet Width 39 inches Side Lap 4 inches Net Width 35 inches
Fastener Spacing in Lap of Base Sheet 9 inches # Rows 1
Fastener Spacing in Field of Base Sheet 18 inches # Rows 2
Min. Characteristic Resistance Force -65.63 Ibf Verify with TAS-105 Tests
Fastener Spacing {(MCRF/P;) x 144)/Row Spacing
No. of Rows of Fasteners 3 4 5 6
Field Fastener Spacing 18.76 25.02 31.27 37.53
Perimeter Fastener Spacing 11.18 14.91 18.64 22.37
Corner Fastener Spacing 11.18 14.91 18.64 22.37
RECOMMENDED BASE SHEET ATTACHMENT PATTERN
Field 1 row in the laps at 9 inches o.c. 2 rows in the center of the sheet at 18" o.c.
Perimeter 1 row in the laps at 9 inches o.c. 2 rows in the center of the sheet at 11" o.c.
Corner 1 row in the laps at 9 inches o.c. 2 rows in the center of the sheet at 11" o.c.
These calculations have been done in accordance with ASCE 7-10 per the Florida Building Code (2014), based
on the information provided by the contractor. The roof system must be installed in accordance with the FBC
and the manufacturer's recommendations. b�� -00
ST. LUCirF• C UNTY BUIL)02T . DMSIO
REVIEWED FACOLANiSincerely REVIEIED
F re is En gi eying Consults 1
q RMIT MUST BE KEPT ON 70B
1// N O INSPECTION WILL BE hZADE.
R. N. Rapp n, P.E. �I
Principal Engineer
Florida Registration No. 46696
Forensic Engineering Consultants, Inc. (CA #8265), P.O.Box 970034, Boca Raton, FL - 33497 Ph (561) 901 8490 Fax (561) 218 3830
_ � f
Forensic Engineering Consultants, Inc.
BASE SHEET ATTACHMENT CALCULATIONS
Project Name
Rosser Library Report No.: TRS-BS-16.001
Project Address
2950 SW Rosser Boulevard
Port St. Lucie, FL - 34953
Deck Substrate
Steel Insulated,' Mean Roof Height ' 16.0 Feet
Configuration
Low Slope Roof Area (Approx.) 18733 Sq.Ft.
Category
III Roof Width 107.0 Feet
Exposure Condition
C Perimeter Width 6.4 Feet
Building Type
Enclosed Parapet Height 4.0 Feet
Base Wind Speed
180 mph
Slope V
0.0 Slope H 12.0 Slope Angle' 0.00
Uplift Pressures
q� = 0.00256 K, Ks Kd Vz P = q, (GCP - GCp;)
qz K.
Kt Kd V GCP GCP1
60.970 0.860
1.005 0.85 180 -1.00 0.18 Field
-1.80 0.18 Perimeter
-1.80 0.18 Corner
Field P1 an
-71.95 psf P1 asd -43.17 psf
Perimeter P2an.
-120.72 psf P2asd -72.43 psf
Corner P3WL
-120.72 psf P3asd -72.43 psf
Proposed System
Johns Manville Modified Bitumen SBS Roof System over Wood Decks
Product Approval No.
FL2948-R10 (Page 17 of 48) System No. S-70
System Design Pressure -60 psf
Fasteners
UltraFasf Fasteners or All Purpose Fasteners with UltraFast Metal Plates
Base Sheet Width
39 inches Side Lap 4 inches Net Width 35 inches
Fastener Spacing in
Lap of Base Sheet 9 inches # Rows 1
Fastener Spacing in
Field of Base Sheet 18 inches # Rows 2
Min. Characteristic Resistance Force -65.63 Ibf Verify with TAS-105 Tests
Fastener Spacing
{(MCRF/Pi) x 144}/Row Spacing
No. of Rows of Fasteners 3 4 5 6
Field Fastener Spacing 18.76 25.02 31.27 37.53
Perimeter Fastener Spacing 11.18 14.91 18.64 22.37
Comer Fastener Spacing 11.18 14.91 18.64 22.37
RECOMMENDED BASE SHEET ATTACHMENT PATTERN
Field 'I row in the laps at 9 inches o.c. 2 rows in the center of the sheet at 18" o.c.
Perimeter 1 row in the laps at 9 inches o.c. 2 rows in the center of the sheet at 11" o.c.
Comer 1 row.in the laps at 9 inches G.G. 2 rows in the center of the sheet at 11" o.c.
These calculations have been done in accordance with ASCE 7-10 per the Florida Building Code (2014), based
on the information provided by the contractor. The roof system must be installed in accordance wit �}FF
and the manufacturer's recommendations. MgVi a � f1 4
Sincerely °
F re Engin eying Consultants, Inc.
R. N. S� ppan, P.E. ZIIDI ��A
Principal Engineer
Florida Registration No. 46696
Forensic Engineering Consultants, Inc.
FL - 33497 Ph (561) 9018490 Fax (561) 218