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FOUNDATION DESIGN
<br />ALLOW BEARING CAPACITY psf
<br />CONCRETE STRENGTH, f'c psi
<br />YEILD STRENGTH, F psi
<br /> EXT. WALL
<br />FTG
<br /> INT. WALL
<br />FTG
<br />F1 F2 F3
<br />FOOTING DIMENSION
<br />WIDTH in 18.0 18.0 18.0 30.0 42.0
<br />LENGTH in 12.0 12.0 18.0 30.0 42.0
<br />DEPTH in 18.0 18.0 18.0 24.0 12.0
<br />COLUMN DIMENSION
<br />WIDTH in 4.0 4.0 4.0 4.0 4.0
<br />LENGTH in 12.0 12.0 4.0 6.0 6.0
<br />FOOTING LOAD
<br />ROOF TRIB. AREA ft2 9.0 9.0
<br />CEILING TRIB. AREA ft2 9.0 9.0
<br />FLOOR TRIB. AREA ft2 9.0 9.0
<br />DECK TRIB. AREA ft2 - -
<br />WALL AREA ft2 20.0 20.0
<br />WALL TYPE EXT INT
<br />DEAD LOAD D lbs 684.0 524.0 1,500.0 1,206.0 7,500.0
<br />LIVE LOAD L lbs 720.0 720.0 1,800.0 4,020.0 9,500.0
<br />SEISMIC LOAD E lbs - -
<br />CHECK BEARING CAPACITY
<br />SERVICE LOAD, (D+L)lbs 1,404.0 1,244.0 3,300.0 5,226.0 17,000.0
<br />SERVICE LOAD, (D+L+E)/1.33 lbs 1,055.6 935.3 2,481.2 3,929.3 12,782.0
<br />SOIL PRESSURE, fb=P/AFTG psf 936.0 829.3 1,466.7 836.2 1,387.8
<br />CHECK fb < Fb OK OK OK OK OK
<br />CHECK MINIMUM REINFORCEMENT
<br />REINFORCEMENT USE 2#4 2#4 2#4 3#4 4#4
<br />AREA OF STEEL, As in2 0.40 0.40 0.40 0.60 0.80
<br />As1 min = 0.0018*Area_Conc. in2 0.49 0.49 0.49 1.13 0.68
<br />As2 min = 1.33*As_Required in2 0.01 0.00 0.01 0.03 0.32
<br />As min = Min(As1,As2) in2 0.01 0.00 0.01 0.03 0.32
<br />CHECK As > As MIN OK OK OK OK OK
<br />CHECK BENDING STRESSES
<br />FACTORED, 1.4D+1.7L lbs 2,182 1,958 5,160 8,522 26,650
<br />FACTORED, 1.4(D+L+E)/1.33 lbs 1,966 1,742 4,620 7,316 23,800
<br />MAXIMUM MOMENT, Mu lb-in 2,969 2,665 7,023 24,005 114,532
<br />b in 12.00 12.00 18.00 30.00 42.00
<br />a = As*Fy / 0.85*f'c*b in 0.94 0.94 0.63 0.56 0.54
<br />Mn = *As*Fy*(d-a/2)lb-in 313,835 313,835 317,224 671,252 377,183
<br />CHECK Mu < Mn OK OK OK OK OK
<br />CHECK SHEAR STRESSES
<br />MAXIMUM SHEAR, Vu lbs - - - 2,557 20,939
<br />b in 12.00 12.00 18.00 30.00 42.00
<br />Vc = 2**bw*d*sqrt(f'c)lbs 15,300 15,300 22,950 53,550 32,130
<br />CHECK Vu < Vc OK OK OK OK OK
<br />1,500.00
<br />60,000.00
<br />2,500.00
<br />01-23 602 S Genoa Dr 1-Story_R3.xls, FTG Design
<br />Page 26
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