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RB Engineers,Inc. Project: Bement Residence By: RB/MiT <br /> 1312 2nd St Kirkland,WA Client: Brookes Design Date: 7/9/2021 <br /> Phone: (425) 822-3009 Subject: Lateral Page: <br /> Email: rbe1992@gmail.com <br /> LATERAL WIND FORCES <br /> ENVELOPE PROCEDURE(ASCE 7-16 Chapter 28) <br /> Design Wind Pressures <br /> Roof Pitch: 10:12 (39.8°) Wind Speed: 100 mph <br /> Wind Exposure: B A= 1.0 ASCE 7-16 p.316 A: 17.8 C: 14.2 <br /> Minimum Pressure 16 psf(wall)28.5.4 B: 12.2 D: 9.8 <br /> Minimum Pressure 8 psf(roof)28.5.4 <br /> Kzt: 1.2 <br /> (ASCE 7-16)Using Allowable Stress Design, 2.4.5 Basic Combinations option 7: 0.6 D+0.6 W <br /> X-X Direction <br /> E Fw Roof= 17.8x(9/2(10+5.5))+ 14.2x(4.5x2+16.5/2(4.5+13)+6.5/2(13+10)) <br /> + 12.2x(6x10)+9.8x(6x1+2.5x6+6x11.5/2)= <br /> 5.76 5.76 x 1.2 Kzt x 0.6= 4.14 kip <br /> E Fw Upper= 17.8x(9x4+2.5x2/2+9x9)+ 14.2x(26x9-2x5.5) <br /> + 12.2x(5x7.5+3.5/2(5+3.5))+9.8x(2x5.5)= <br /> 6.04 6.04 x 1.2Kztx0.6= 4.35 kip <br /> Roof Min= [(69.75+228.125)x16+(60+55.5)x8)]x1.2x0.6= 4.10 kip <br /> Upper Min= [(119.5+223)x16+(52.375+11)x8)]x1.2x0.6= 4.31 kip <br /> Y-Y Direction <br /> E Fw Roof= 17.8x(4x9.25+4x4)+ 14.2x(33x4)+ 12.2x(9x10+9x5)+9.8x(33x9)_ <br /> 7.38 5.62 x 1.2 Kzt x 0.6= 5.31 kip <br /> E Fw Upper= 17.8x(9x9+5x2+6.5x9+4.5/2(9+5))+ 14.2x(33x9)= <br /> 7.44 7.44 x 1.2 Kzt x 0.6= 5.36 kip <br /> Roof Min= [(53+132)x16+(135+297)x8)]x1.2x0.6= 4.62 kip <br /> Upper Min= [(181+297)x16+(0+0)x8)]x1.2x0.6== 5.51 kip <br />