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:HARLE$ L. YOUNGMAN, C. <br />1375 Ubetty SI. SE <br />Salem, OR 97302~1245 <br />(503) 364-8207 - FAX {503) 364-073~ <br /> <br />I.;;..~lVll~O I/il O, JIq bi-It:l: t <br /> JoB NO. ~'~1~1 _ PAGE <br /> CLIENT pPtCI<; CT <br /> PROJECT /~m ~-~ <br /> DATE l~0V ?~ BY ~C REVIEWER_ <br /> <br />DESIGN BASEMENT WALL <br />WALL THICKNESS = B" <br />FOR CLAYEY SILT <br />(~= 25° <br />7~- 110 PCF <br />AT-REST EARTH PRESS. <br />COEFFICIENT <br />Ko -- (1-SIN 25) <br /> = 0.58 <br /> <br />EQUIV. FLUID PRESSURE <br />Po ~ */Ko = 110 PCF (0,58) <br /> = 64 PSF/FT <br /> USE FOOTING DRAIN) <br /> <br />f' ~Sl <br /> c = 3000 <br /> (CONCRETE) <br />fy = 40,000 PSI <br /> (GRADE 40 STEEL) <br /> <br />HEIGHT OF <br />~ALL <br />7,.Ga <br /> <br />R b = 2/3 <br /> = /o5o #/?-r <br /> <br />,[ P't = 1/3 (RI -- <br /> <br />R [] I/2 Po H <br />= 1570 <br /> <br />Mu / efy = d (As) - (fy / 1.7t'cb)(As? <br />( ~5(~7 )(12 in/ft)/(0,9)(40,000) = ( 6 <br />(0.654) Ass- ( G .,)As + ( 6,86 <br />PMAX, = 0.75Pb = 0,75(0,0371 ) -- 0.0278 <br />· '. AS MAX. = pbd = .0278(12")( 6 ) -_ <br />PaiN. VERT. = 0.0015 <br />· '. ASMiN. VERT.' =pbt--0.0015(12")( _ <br /> <br />)MIN. HORIZ. = 0.0025 <br /> As MIN. HORIZ. = pbt -- 0.0025(12")( .. 8 ) -- <br /> <br /> USE # <br /> <br />. )(As) - ((40,000) / (1.7)(3000)(12))(Asp <br /> <br /> ) = 0 AS VERT. -- _ 0. 15 I1'~.~ <br /> <br /> 2,0 <br /> <br /> )-- 0.,// ~N~..Z; <br /> <br />lUSE # q @ /~ "O,C, <br /> <br /> CLEAR OF iNSIDE FACE <br /> o~ W~'~'c, {A,- <br /> <br />q' @ 9 "O.C. HORIZONTAL. i <br /> <br />MAX. MOMENT = M = 0.1283RH = 0.1283(_~)( ?,5 ) = <br />MAX. SHEAR = V -- Rb = 1050 ,~t (SERVICE) <br />FOR 1 V2" CLEARANCE TO INSIDE FACE, d ~ ~- 1~"- Y~"= ~ <br />Mu = 1.7 MSERViC~ = 1.7( /5/0 ) = ~J5~,'7, ,~ (ULTIMATE) <br />Mu / efy = As (d - a / 2) WHERE a = Asfy / 0.85f'cb <br /> <br />H~' HEIGHT OF <br /> BACKFILL <br /> · 7'-0" <br /> <br />15-10 ,'~ (SERVICE <br /> <br /> <br />