7514 EVERGREEN WAY 2020-08-27 - Laserfiche WebLink

Dibble Engineers,Inc. Jos TITLE Wendys Everett-Broadway 1029 Market Street Kirkland,WA 98033 JOB NO. 18-395 SHEET NO. (425)828-4200 CALCULATED BY MWD DATE 9/11/18 CHECKED BY- DATE Ultimate Wind Pressures Wind Loads-Components &Cladding : h <=60' Kh(case 1)= 0.70 h= 12.0 ft Base pressure(qh)= 18.4 psf a= 4.5 ft Minimum parapet ht= 2.5 ft GCpi= +/-0.18 Roof Angle(9)= 0.0 deg Type of roof= Monoslope Roof GCp+/-GCpi I 1 Surface Pressure(psf) User input Area 10 sf L 50 sf I 100 sf j 10 sf 50 sf 100 sf 75 sf I 500 sf Negative Zone 1 -1.18 -1.11 -1.08I 21.8 -20.5 -19.9 -20.2 -19.9 Negative Zone 2 -1.98 -1.49 -1.28 -36.5 -27.5 -23.6 -25.2 -23.6 Negative Zone 3 -2.98 -1.79 -1.28 -55.0 -33.1 -23.6 -27.5 -23.6 Positive All Zones 0.48 0.41 0.38 16.0 16.0 16.0 16.0 16.0 Overhang Zone 1&2 -1.70 -1.63 -1.60 -31.4 -30.1 -29.5 -29.7 -20.3 Overhang Zone 3 -2.80 -1.40 -0.80 I -51.6 -25.9 -16.0 -19.4 -16.0 Overhang pressures in the table above assume an internal pressure coefficient(Gcpi)of 0.0 Overhang soffit pressure equals adj wall pressure(which includes internal pressure of 3.3 psf) Parapet qp= 18.4 psf Surface Pressure(psf) User input Solid Parapet Pressure 10 sf 100 sf 500 sf 40 sf CASE A=pressure towards building(pos) CASE A:Interior zone: 49.8 34.0 31.9 40.3 CASE B=pressure away from bldg(neg) Corner zone: 68.3 34.0 31.9 47.6 CASE B:Interior zone: -34.9 -29.0 -24.9 -31.3 Corner zone: -39.8 -31.0 -24.9 -34.5 Walls GCp+/-GCpi Surface Pressure(psf) User input Area 10 sf 100 sf 500 sf 10 sf 100 sf 500 sf 50 sf 200 sf Negative Zone 4 -1.17 -1.01 -0.90 -21.6 -18.7 -16.6 -19.5 -17.8 Negative Zone 5 -1.44 -1.12 -0.90 -26.6 -20.7 -16.6 -22.5 -18.9 Positive Zone 4&5 1.08 0.92 0.81 19.9 17.0 16.0 17.9 16.1 Note:GCp reduced by 10%due to roof angle<=10 deg.