Laserfiche WebLink
08-14-2003 05~54RM FROM FERRN ENGINEERING SERVICE TO 2475104 P.03 <br />~ ~ ~ <br />i ~ <br />~„ <br />I?roject Oe~i n Ma{~,til Tunnel Bulkhead By ~JFA!,~ ate$15~03 i <br />8` 9' Thicl' tatiota +41 ' ' <br />~ ~ I I ~ Sheets . ~ I' <br />~' { - 1 <br />lYotalioni o tinned: IIIputs COIItinued: , <br />_, ~ <br />V o = eonvn concrete sheaf strength! (Ib/ft) Load increase factdrs <br />V „ factor Igd concrete i3hes streugtti (db/ft) Fluid static load, ~ ft ~ 1.a0 : i~ , <br />~ar s~1p~,) ~ , ~ <br />v; = rob sh ; stye st ~hquake accelerabon,~ statiq fluid I ~~~ ~_ 1i0~ ~ 1 <br />ILM1aV - to ,~ bulkhead I (lb) 10~~~~ 1 i <br />4 = heist df I' to eat hydrofrac (e),Earthquake acceleration ~oad, line o ;~Ifea := 1~`Ip ~ <br />~~`` ~ r . <br />ovb Q'iverburden r~Ck stress per ft of depth (psi) f~hu'd :and bulkhead masses, I~' I I <br />~; <br />m rs - fao~orgd static fluid bulkhead load (psf) ~ I I ' ~~ <br />~, ~ = f?<ctor~d static (fluid bulkhead earthquake <br />a ~ ='factor(ped line o~sight fluid bulkhead i i' <br />~eat~h9t<ake lo~sfj i i <br />min bul concrete ~ ' <br />i : earfthq e I (psi i ~ ~ , <br />Cis = flextral~ ~P ') j i ! i i <br />i, <br />¢~~ _ ~tzum cipal seress (psi)', ,i I `' <br />~' <br />~,~, _ prin 'pa! stress (psi) ~ I ; <br />~~~n~mum <br />6~OVb ~i ~Pn StttCSS!(P31) i ~ ~ ~ : <br />' `~ <br />~ ~ ~ ~ ~~ ~ i <br />I ~ <br />)E~dlklhesd le fo h' drauli sure rain <br />etd v cures ~ d e t. ~ ' <br />i ~ I <br />j;~~~~' p,_HYw psi p=94 ps <br />~, ~ i ~ -! '144 ~ I ~. <br />~'',~ Allou%able pz+essurt gradie~it of 4l p~ilft for low-pressure (~Sa, psi) grouting ofupp~er p ~ .off ,~ ; ~ ~ f <br />~, concre>~r/rdck co ct <br />~I ~ ~. ~ ~ , ' <br />Iiequii~id b~tTkfiead i ettgth 1•or law-pressure grouted concretelrock contact 4 i L ~ 2.3 ' R <br />i I I I! ' <br />tL tai snirfack tb vent h; dofrac of melt. around tanncl: <br />~. ',, ~! <br />'; Allowable i rmatio{~ bi~eakClovvn pressure, B F := p S P = 94 psi ~ ~ ~ ~ <br />~: <br />i •:overtu~vressa<e,~r~a~orae~, eovb~° ~ eo~b=>.1~6 ! psi/~ ~ ~ i ' <br />~Iieight f k;to pfiev~pt Nydrofrac; Z := p Z = 40.2 ft,• ' <br />~ I 2-e ovb <br />i I . <br />' I i ~ ~ i~adz+mmavnu <br />i <br />