HomeMy WebLinkAboutINSULATION BOARD ATTACHMENT CALCULATIONSI
Forensic engineering Consultants, Inc.
INSULATION BOARD ATTACHMENT CALCULATIONS
Project Name City of Ft. Pierce - Facilities Admin. Building - Main FEC ReportNo.: CIS-I13-18.001
Project Address 3071 Oleander Avenue
Ft. Pierce, FL - 34982
Deck Substrate Steel Insulated Mean Roof Height 15.0 Feet
Configuration Low Slope Roof Area (Approx.) 5800 Sq.Ft.
Category IV SCANNED Roof Width 75.0 Feet
Exposure Condition C BY Perimeter Width 6.0 Feet
BuildBaselng Type Wind Speed 180 Enclosed mph St. Lucie County Papet Cornerr Zones Height 6' x0.0 Feet
6' Each
Slope V 0.0 Slope H 12.0 Slope Angle° 0.00
Uplift Pressures qz = 0.00256 Kz Krt Kd V2 P = qz (GCP - GCP;)
qz Kz Kzt Kd V GCP GCPi
60.227 0.850 1.005 0.85 180 -1.00 0.18 Field
-1.80 0.18 Perimeter
-2.80 0.18 Corner
Field Pt uIL -71.07 psf PI asd -42.64 psf
Perimeter P2 ItL -119.25 psf P2asd -71.55 psf
Corner P3ua.-179.48 psf P3aad-107.69 psf
Proposed System Johns Manville SBS Modified Bitumen Roof Systems
Product Approval No. FL2948-R12 (Page 12 of 50) System No. S-16
System Design Pressure -52.5 psf
Insulation Board Dimensions 4' x 4' Insulation Board Area 16 Sq.Ft.
Fasteners Approved Screws and Plates
Min. Fasteners per Board 8
Min. Characteristic Resistance Force-105.00 Ibf -295.6 Ibf (MCRF from TAS-105 Tests)
No. of Fasteners Required NF = (Ins. Board Area x Pi) / MCRF
Field Perimeter Corner
Fastener Requirement 6.50 10.90 16.41
RECOMMENDED INSULATION BOARD ATTACHMENT PATTERN
Field Use 8 Fasteners per 4' x 4' board
Perimeter Use 11 Fasteners per 4' x 4' board
Corner Use 17 Fasteners per 4' x 4' board
These calculations have been done in accordance with ASCE 7-10, based on the information provided by the
contractor. The roof system should be installed in accordance with the FBC & manufacturer's recommendations.
If recover option is chosen, verify that roof meets all FBC requirements to receive a recover roof, before installing.
Sincerely
Forensic Engineering Consultants; Inc.
`1/ R.N. SSatapPan'
Principal Engineer I
Florida Registration No. 46996
Forensic Engineering Consultants, Inc. (CA #8265), P.O. Box 970034, Boca Raton, FL - 33497 Ph (561) 901 8490 Fax (561) 218 3830
Forensic engineering ConSbaants, Inc.
INSULATION BOARD ATTACHMENT CALCULATIONS
Project Name City of Ft. Pierce - Facilities Admin. Building - Canopy FEC ReportNo.: CIS-IB-18.002
Project Address 3071 Oleander Avenue
Ft. Pierce, FL - 34982
Deck Substrate Steel Insulated Mean Roof Height 15.0 Feet
Configuration Low Slope Roof Area (Approx.) 341 Sq.Ft.
Category II Roof Width 11.0 Feet
Exposure Condition C Perimeter Width 3.0 Feet
Building Type Not Enclosed Parapet Height 0.0 Feet
Base Wind Speed 170 mph Comer Zones 3' x 3' Each
Slope V 0.0 Slope H 12.0 Slope Angle 0.00
Uplift Pressures q, = 0.00256 K� Kn Kd V2 P = q. (GCP - GCP;)
qz K. Kt Kd V GCP GCP;
53.721 0.850 1.005 0.85 170 -1.00 0.55 Field
-1.80 0.55 Perimeter
-2.80 0.55 Corner
Field PI it -83.27 psf P1 asd -49.96 psf
Perimeter P2,m.-126.24 psf P2asd -75.75 psf
Comer P3 uIL-179.96 psf P3 asd-107.98 psf
Proposed System Johns Manville SBS Modified Bitumen Roof Systems
Product Approval No. FL2948-R12 (Page 12 of 50) System No. S-16
System Design Pressure -52.5 psf
Insulation Board Dimensions 4' x 4' Insulation Board Area 16 Sq.Ft.
Fasteners Approved Screws and Plates
Min. Fasteners per Board 8
Min. Characteristic Resistance Force-105.00 Ibf -295.6 Ibf (MCRF from TAS-105 Tests)
No. of Fasteners Required NF = (Ins. Board Area x PI) / MCRF
Field Perimeter Corner
Fastener Requirement 7.61 11.54 16.45
RECOMMENDED INSULATION BOARD ATTACHMENT PATTERN
Field Use 8 Fasteners per 4' x 4' board
Perimeter Use 12 Fasteners per 4' x 4' board
Corner Use 17 Fasteners per 4' x 4' board
These calculations have been done in accordance with ASCE 7-10, based on the information provided by the
contractor. The roof system should be installed in accordance with the FBC & manufacturer's recommendations.
If recover option is chosen, verify that roof meets all FBC requirements to receive a recover roof, before installing.
Sincerely
Forensic Engineering Consultants, Inc.
R.'N s
PPan, P.E.
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