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<br />98 <br /> <br />~ <br />~ <br />~ <br />~ <br /> <br />~ <br /> <br />'" <br />C <br />-0 <br />ro <br />o <br />-' <br /> <br />L <br />~ <br />~ <br />ro <br />:< <br />--.. <br /> <br />o <br />'" <br /> <br />~ <br />o <br /> <br />~ <br />.c <br />'" <br />~ <br />:c <br /> <br />7 <br /> <br />6 <br /> <br />5 <br /> <br />4 <br /> <br />3 <br /> <br />o <br /> <br />STRUCTURAL PLAIN CONCRETE <br />(Unrei nforced) <br /> <br />Ultimate Strength Design <br />o .9 <br />U 1.4 <br />ftu 3.25nr-+7psi <br />ftu permissible stress in <br />tension in concrete <br />wall thickness <br />fc:: 3000 psi <br /> <br /> <br />f' <br />c <br /> <br />50 <br /> <br />100 <br /> <br />150 <br /> <br />250 <br /> <br />.-SZ.... <br />--:::-~ <br />~",...~ <br /> <br />a <br /> <br />H <br /> <br />200 <br /> <br />Working Load (Yw) (or Equivalent Fluid Weight) (pef) <br /> <br />PH <br /> <br />DESIGN <br />AS'SiiM PTlONS <br /> <br />H = 8'-011 <br />= lOll <br /> <br />H = Yw x a <br /> <br />300 <br /> <br />Figure 11.8 Ultimate strength design for 10" unrein forced concrete walls. (Reference 26). <br /> <br />" <br />. <br />'"- <br />1 6 <br />~ <br />;; <br />3 <br />~ <br />. <br />~ <br />~ <br />:::: <br />Sl <br />'0 <br />" <br />. <br />~ <br />.;; <br />% <br /> , <br /> 0 <br /> <br />11. 17 <br /> <br />REINfORCED (OHeRElE <br /> <br />Ultl~teStren9thDesi9n <br />lJ ".9 <br />U _1.4 <br />Cover.. I 1/2" <br />'''vertlcill iNlrs <br />fe .. 2500 psi <br />fe .. con(.rete com. <br />pressive strength <br />Bar Spacing <br />.. 12" <br /> <br /> <br />~ <br />~ <br />..,,-- ,~ <br /> <br />H <br /> <br />. H <br /> <br />t.. Wed 1 thickness <br />Of SIGN ASSUMPTIONS <br />H -8'-0" <br />t -8" <br />PI1 ,. 'Yw x a <br /> <br />Figure 11.9 Ultimate strength design for 8" reinforced concrete walls. (Reference 26). <br /> <br />so <br /> <br />100 <br /> <br />ISO <br /> <br />250 <br /> <br />,00 <br /> <br />'00 <br /> <br />Working Load hw) (or Equivalent Fluid Weight) (per) <br />