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[(\(9\))-672(Jib)-606(crane.)-1212(A)-606(wall)-606(or)-612(pillar-mounted,)-606(rotating)]TJ -1.872 -1.2 TD [(bracket)-522(with)-522(an)-522(electric)-522(or)-528(manual)-522(hoist)-522(for)-522(specialized)]TJ T* [(lifts)-336(with)-336(limited)-336(horizontal)-336(movement)-336(requirements.)]TJ /F8 1 Tf 1.872 -2.412 TD [(b.)-690(Preliminary)-756(considerations.)]TJ /F6 1 Tf 14.6853 0 TD [(For)-756(each)-756(power-)]TJ -16.5573 -1.2 TD [(house,)-660(the)-666(following)-666(preliminary)-660(considerations)-666(should)]TJ T* [(precede)-504(design)-498(and)-504(specification)-504(work)-504(on)-498(the)-504(individual)]TJ T* (cranes:)Tj 1.872 -2.4 TD [(\(1\))-672(Items)-336(handled.)-684(A)-336(preliminary)-342(listing)-336(of)-342(all)-342(major)]TJ -1.872 -1.2 TD [(items)-540(to)-534(be)-534(handled)-540(by)-534(powerhouse)-540(cranes)-534(during)-534(con-)]TJ T* [(struction,)-606(operation,)-612(maintenance,)-606(and)-612(repair)-606(should)-612(be)]TJ T* [(prepared.)-1002(The)-504(listing)-498(should)-504(include)-504(estimated)-498(weights,)]TJ T* [(pickup)-336(and)-336(set)-336(down)-336(points,)-336(and)-336(the)-336(crane)-336(to)-336(be)-336(used.)]TJ 1.872 -2.4 TD [(\(2\))-672(Area)-504(layouts.)-1008(For)-504(each)-504(crane,)-504(layout)-504(drawings)]TJ -1.872 -1.2 TD [(should)-576(be)-582(prepared)-576(showing)-582(points)-576(at)-576(which)-582(the)-576(crane)]TJ T* [(must)-462(pick)-462(up)-462(or)-462(set)-462(down)-456(material,)-462(including)-462(loading)-462(or)]TJ T* [(unloading)-654(of)-660(trucks)-654(and)-654(railroad)-660(cars,)-654(intermediate)-660(or)]TJ T* [(transfer)-462(points,)-462(maintenance)-462(and)-462(repair)-462(areas,)-468(and)-462(equip-)]TJ T* [(ment)-588(installation)-582(points.)-1170(These)-582(layouts)-588(should)-582(include)]TJ T* [(points)-348(for)-354(required)-354(lifts)-348(and)-354(points)-348(or)-354(areas)-348(at)-354(which)-354(crane)]TJ T* 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[(engineering)-642(manuals)-642(and)-636(guide)-642(specifications)-642(as)-642(refer-)]TJ T* [(enced)-396(herein)-390(under)-396(the)-390(particular)-396(crane)-396(type.)-786(Final)-396(detail)]TJ T* [(design)-516(and)-522(construction)-516(of)-516(cranes)-522(are)-516(responsibilities)-516(of)]TJ T* [(the)-408(supplier)-414(as)-408(provided)-414(under)-408(the)-414(procurement)-408(contracts.)]TJ T* [(The)-480(responsibility)-480(of)-480(the)-480(powerhouse)-480(design)-480(office)-486(is)-480(to)]TJ T* [(obtain)-366(and)-366(coordinate)-366(all)-366(preliminary)-366(information)-372(noted)-366(in)]TJ 0 -1.212 TD [(paragraph)-408(6-2)]TJ /F8 1 Tf 5.7387 0 TD 0 Tw (b)Tj /F6 1 Tf 0.5 0 TD [(;)-408(t)0(o)-408(determine)-402(requirements)-408(for)-408(each)-408(crane)]TJ -6.2386 -1.2 TD [(based)-570(on)-576(the)-570(preliminary)-576(information;)-576(to)-570(prepare)-576(crane)]TJ T* [(clearance)-456(drawings)-456(based)-450(on)-456(sufficient)-456(design)-456(studies;)-450(to)]TJ T* [(assure)-384(a)-384(practical)-384(and)-384(economical)-384(crane;)-384(to)-384(prepare)-384(speci-)]TJ T* [(fications;)-468(and)-468(to)-468(review)-462(shop)-468(drawings,)-468(design)-462(computa-)]TJ T* [(tions,)-444(and)-444(operating)-450(instruction)-444(manuals.)-894(Documentation)]TJ T* [(of)-414(assumptions)-414(and)-420(reasons)-414(for)-414(selecting)-414(particular)-414(lifting)]TJ T* [(procedures)-438(and)-438(equipment)-438(arrangements)-438(should)-438(be)-444(a)-438(part)]TJ T* [(of)-414(the)-414(design)-408(records.)-828(The)-408(preliminary)-414(studies)-414(and)-408(coor-)]TJ T* [(dination)-378(are)-372(important)-378(in)-378(obtaining)-378(the)-372(optimum)-378(crane)-378(for)]TJ T* [(the)-336(required)-336(service,)-336(and)-336(shortcuts)-336(should)-336(not)-336(be)-336(made.)]TJ /F8 1 Tf 1.452 -2.412 TD [(d.)-1182(Bidder)-576(qualifications.)]TJ /F6 1 Tf 12.1325 0 TD [(Bidder)-576(qualifications)-570(are)]TJ -13.5845 -1.2 TD 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[(slant-)-468(or)-474(bulb-type)-468(units.)-942(These)-468(special)-468(facilities)-474(should)]TJ T* [(be)-396(determined)-402(and)-396(furnished)-396(by)-396(the)-402(generator)-396(and)-396(turbine)]TJ T* [(contractors)-360(subject)-360(to)-360(the)-354(normal)-360(design)-360(office)-360(shop-draw-)]TJ T* [(ing)-336(reviews.)]TJ 1.872 -2.4 TD [(\(2\))-672(Number)-396(of)-396(cranes.)-792(The)-396(choice)-396(of)-396(providing)-396(one)]TJ -1.872 -1.2 TD [(or)-594(two)-588(cranes)-594(is)-594(an)-588(important)-594(consideration)-594(in)-588(power-)]TJ T* [(houses)-402(with)-402(several)-408(units)-402(or)-402(heavy)-402(capacity)-402(requirements.)]TJ T* [(Factors)-336(entering)-336(into)-336(this)-336(determination)-336(are:)]TJ 1.872 -2.4 TD [(\(a\))-672(Procurement)-390(cost.)-774(This)-390(cost)-390(considers)-384(one)-390(crane)]TJ -1.872 -1.2 TD [(versus)-336(two.)]TJ 1.872 -2.4 TD [(\(b\))-672(Powerhouse)-354(structural)-354(costs.)-714(A)-360(single)-354(crane)-360(may)]TJ 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[(approximately)-402(the)-396(same.)-798(One)-402(advantage)-402(of)-396(the)-402(AC)-402(drive)]TJ T* [(is)-624(reduced)-618(maintenance)-624(since)-618(induction)-618(motors)-624(do)-618(not)]TJ T* [(have)-408(brushes)-402(as)-408(DC)-408(motors)-408(do.)-810(The)-402(guide)-408(specifications)]TJ T* [(list)-390(several)-390(alternatives)-390(to)-396(be)-390(determined)-390(for)-390(each)-390(specific)]TJ T* (application.)Tj 1.452 -2.4 TD [(\(4\))-672(Crane)-456(capacity.)-918(EM)-462(1110-2-4203)-456(includes)-456(guid-)]TJ -1.452 -1.2 TD [(ance)-624(for)-624(determining)-624(crane)-624(capacity.)-1242(In)-624(applying)-624(the)]TJ T* [(criteria)-456(the)-450(engineer)-456(should)-450(be)-456(aware)-450(that)-456(numerous)-456(fac-)]TJ T* [(tors)-564(beyond)-564(engineering)-564(control)-570(tend)-564(to)-564(disrupt)-564(orderly)]TJ T* [(scheduling,)-408(and)-408(it)-408(will)-408(frequently)-408(be)-408(necessary)-408(to)-408(prepare)]TJ T* 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[(tions.)-1140(It)-570(has)-570(been)-576(the)-570(Corps)-570(of)-570(Engineers)-570(practice)-570(to)]TJ T* [(specify)-384(crane)-384(ratings)-384(that)-384(allow)-378(up)-384(to)-384(10)-336(percent)-384(overload)]TJ T* [(for)-558(infrequent)-558(special)-558(heavy)-558(lifts)-552(such)-558(as)-558(the)-558(generator)]TJ T* [(rotor)-354(when)-354(a)-360(preferred)-354(crane)-360(rating)-354(falls)-360(within)-354(this)-360(range.)]TJ T* [(For)-516(cranes)-516(designed)-516(in)-516(accordance)-516(with)-516(Corps)-516(of)-516(Engi-)]TJ T* [(neers)-366(guide)-366(specifications,)-366(this)-366(overload)-366(is)-366(well)-366(within)-366(the)]TJ T* [(allowable)-486(stresses)-486(permitted)-480(by)-486(the)-486(Crane)-480(Manufacturers)]TJ T* [(Association)-684(of)-684(America)-684(\(CMAA\))-684(standards)-684(and)-684(is)-684(in)]TJ T* [(accordance)-420(with)-420(ANSI)-420(standards)-420(and)-420(OSHA'S)-414(interpreta-)]TJ T* [(tion)-336(of)-336(their)-336(regulations.)]TJ 1.452 -2.4 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[(from)-462(erection)-462(areas)-462(to)-462(the)-462(crane)-462(cab)-462(level)-468(may)-462(be)-462(15)-336(m)]TJ T* [(\(50)-336(ft\))-348(or)-348(more.)-696(This)-348(makes)-348(it)-348(desirable)-348(to)-348(provide)-354(access)]TJ T* [(from)-654(a)-648(level)-654(served)-648(by)-654(an)-648(elevator)-654(when)-648(practicable.)]TJ T* [(Access)-552(via)-552(convenient)-546(stairs)-552(is)-552(preferred)-546(when)-552(elevator)]TJ T* [(service)-600(is)-594(impracticable,)-600(but)-594(the)-600(most)-600(common)-594(access,)]TJ 26.28 61.2 TD [(particularly)-372(in)-372(the)-372(smaller)-372(powerhouses,)-372(is)-372(via)-372(ladders.)-744(A)]TJ 0 -1.2 TD [(ladder)-384(located)-384(to)-384(permit)-384(direct)-384(access)-384(to)-384(the)-384(cab)-390(elevation)]TJ T* [(is)-450(preferred.)-900(Via)-450(corbel,)-444(bridge,)-450(and)-450(ladder)-450(descent)-450(into)]TJ T* [(cab)-462(is)-462(the)-462(least)-462(desirable)-468(means)-462(of)-462(access)-462(but)-462(is)-462(accept-)]TJ 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[(slots)-342(or)-348(other)-342(repair)-342(locations)-348(are)-342(normal)-342(requirements.)-690(In)]TJ T* [(some)-354(instances,)-360(the)-354(crane)-360(is)-354(used)-360(during)-354(gate)-354(delivery)-360(and)]TJ T* [(erection;)-1188(however,)-1194(construction)-1188(scheduling)-1194(usually)]TJ T* [(requires)-516(contractor)-522(cranes)-516(being)-522(available)-516(for)-516(gate)-522(erec-)]TJ T* [(tion.)-978(Intake)-486(gantry)-486(cranes)-486(are)-492(not)-486(used)-486(to)-486(lower)-492(intake)]TJ T* [(gates)-690(in)-690(an)-690(emergency)-690(because)-684(of)-690(the)-690(potential)-690(load)]TJ T* [(capacity)-402(problems)-396(resulting)-402(from)-402(gate)-396(hydraulic)-402(downpull)]TJ T* [(in)-516(addition)-522(to)-516(the)-522(slow)-516(response.)-1038(The)-516(total)-522(time)-516(for)-522(a)]TJ T* [(crane)-378(crew)-372(to)-378(come)-372(on)-378(site,)-372(pick)-378(up)-372(an)-378(intake)-378(gate,)-372(travel)]TJ T* [(to)-396(the)-396(affected)-396(generating)-396(unit,)-402(lower)-396(the)-396(intake)-396(gate,)-396(and)]TJ T* [(repeat)-360(the)-366(sequence)-360(to)-366(install)-360(the)-360(other)-366(two)-360(intake)-366(gates)-360(is)]TJ T* [(much)-540(too)-540(long)-540(to)-540(avoid)-540(major)-540(damage)-540(to)-540(the)-540(unit)-540(and)]TJ T* [(protect)-636(the)-630(integrity)-636(of)-636(the)-630(powerhouse.)-1272(Even)-630(if)-636(the)]TJ T* [(intake)-516(gantry)-510(crane)-516(was)-516(built)-510(with)-516(three)-510(hoists)-516(to)-516(carry)]TJ T* [(three)-462(intake)-468(gates)-462(to)-462(provide)-462(faster)-468(closure,)-462(the)-462(response)]TJ T* [(time)-336(is)-336(still)-336(too)-336(long.)]TJ 1.452 -2.4 TD [(\(b\))-672(Fish)-498(guidance)-492(equipment.)-990(Raising)-498(and)-492(lowering)]TJ -1.452 -1.2 TD [(fish)-654(guidance)-654(equipment,)-654(such)-660(as)-654(submerged)-654(traveling)]TJ T* 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[(American)-780(Society)-780(of)-780(Testing)-780(and)-780(Materials)-780(\(ASTM\))]TJ T* [(A312,)-426(Grade)-426(TP304.)-852(If)-420(it)-426(is)-426(necessary)-426(to)-426(utilize)-426(two)-426(oil)]TJ T* [(reservoirs)-750(on)-750(a)-750(single)-756(system,)-750(the)-750(equalizing)-756(header)]TJ T* [(between)-558(them)-558(should)-558(be)-558(substantially)-552(oversized)-558(to)-558(pre-)]TJ T* [(clude)-690(overflow)-690(from)-684(unbalanced)-690(return)-690(flows.)-1374(Low-)]TJ T* [(pressure)-360(piping)-360(should)-360(be)-360(sized)-360(to)-354(provide)-360(a)-360(positive)-360(head)]TJ T* [(throughout)-768(the)-768(system)-762(unless)-768(there)-768(are)-768(minor,)-768(short)]TJ T* [(duration,)-774(negative)-774(pressures)-780(under)-774(emergency)-774(closure)]TJ T* (operation.)Tj 1.452 -2.4 TD [(\(l\))-672(Reservoir.)-1032(A)-522(reservoir)-516(sized)-516(to)-516(contain)-522(the)-516(dis-)]TJ -1.452 -1.2 TD 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[(hoists)-486(from)-486(over)-480(the)-486(gate)-486(slots)-486(to)-480(permit)-486(transfer)-486(of)-486(the)]TJ T* [(gates)-510(to)-510(the)-516(gate)-510(repair)-510(pit)-510(by)-510(use)-510(of)-516(the)-510(intake)-510(gantry)]TJ T* (crane.)Tj 1.872 -2.4 TD [(\(b\))-672(Description.)-720(Each)-360(hoist)-360(consists)-366(of)-360(a)-360(cable)-360(drum)]TJ -1.872 -1.2 TD [(or)-444(drums)-450(and)-444(a)-444(system)-450(of)-444(sheaves)-444(and)-444(blocks)-450(which)-444(are)]TJ T* [(electric)-540(motor)-534(driven)-540(through)-534(an)-540(arrangement)-540(of)-534(shafts,)]TJ T* [(speed)-432(reducers,)-426(and)-432(spur)-426(or)-432(hellical)-426(gears.)-858(The)-432(motor)-426(is)]TJ T* [(usually)-426(460-V,)-426(3-phase,)-426(60-cycle,)-420(squirrel-cage,)-426(induction)]TJ T* [(type)-426(with)-432(suitable)-426(enclosure.)-858(Two)-432(speeds)-426(are)-432(sometimes)]TJ T* [(provided)-528(to)-534(permit)-534(lowering)-534(at)-534(approximately)-534(twice)-534(the)]TJ T* 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[(capacity.)-960(Either)-480(pump)-480(used)-480(alone)-480(should)-480(be)-480(capable)-480(of)]TJ T* [(accomplishing)-396(an)-390(unwatering.)-792(Since)-396(unit)-390(unwatering)-396(will)]TJ T* [(not)-498(be)-504(scheduled)-504(under)-504(powerhouse)-498(design)-504(flood)-504(condi-)]TJ T* [(tions,)-510(rated)-516(unwatering)-510(pump)-510(discharge)-516(should)-510(be)-510(for)-516(a)]TJ T* [(maximum)-438(planned)-438(tailwater)-438(under)-438(which)-438(unwatering)-432(will)]TJ /F4 1 Tf -26.28 -7.2 TD (11-2)Tj ET endstream endobj 137 0 obj <> endobj 138 0 obj <>/Font<>/ProcSet[/PDF/Text]>> endobj 139 0 obj <>stream BT /F4 1 Tf 10 0 0 10 482.94 748.32 Tm 0 g BX /GS1 gs EX 0 Tc [(EM)-336(1110-2-4205)]TJ 2.832 -1.2 TD [(30)-336(Jun)-336(95)]TJ /F6 1 Tf -45.726 -2.358 TD [(occur.)-1002(To)-504(provide)-498(backup)-504(for)-498(the)-504(drainage)-498(system,)-504(the)]TJ 0 -1.2 TD [(unwatering)-516(pumps)-516(should)-522(have)-516(a)-516(reasonable)-522(capacity)-516(at)]TJ T* 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[(possibility)-462(of)-468(conflicting)-462(unwatering)-468(schedules)-462(should)-468(be)]TJ T* [(carefully)-528(evaluated.)-1062(Portable)-528(equipment)-534(is)-528(frequently)-528(a)]TJ T* [(preferable)-336(choice.)]TJ 1.872 -2.4 TD [(\(2\))-672(Construction)-354(usage.)-714(Use)-354(of)-360(the)-354(unwatering)-360(facil-)]TJ -1.872 -1.2 TD [(ities)-348(for)-342(construction)-342(requirements)-342(or)-342(for)-342(maintaining)-342(skel-)]TJ T* [(eton)-432(\(future\))-426(powerhouse)-432(bays)-432(in)-426(an)-432(unwatered)-432(condition)]TJ T* [(should)-420(not)-426(be)-420(planned.)-840(Questionable)-426(condition)-420(of)-420(equip-)]TJ T* [(ment)-510(and)-504(fouling)-510(of)-510(lines)-510(with)-504(construction)-510(debris)-510(after)]TJ T* [(such)-336(usage)-336(will)-336(be)-336(usually)-336(experienced.)]TJ /F4 1 Tf 0 -2.442 TD [(11-3.)-672(Drainage)-336(System)]TJ /F8 1 Tf 1.872 -2.37 TD [(a.)-690(General)]TJ /F6 1 Tf 4.7168 0 TD 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[(structure,)-492(it)-486(may)-486(be)-486(feasible)-486(to)-486(drain)-492(the)-486(intake)-486(deck)-486(to)]TJ T* [(pool.)-858(A)-426(minimum)-426(of)-426(two)-432(roof)-426(drains)-426(per)-432(bay)-426(should)-426(be)]TJ T* [(provided)-678(to)-678(minimize)-684(flooding)-678(from)-678(plugging.)-1362(Deck)]TJ T* [(drains)-450(should)-456(be)-450(located)-456(to)-450(eliminate)-456(standing)-450(water)-456(and)]TJ T* [(should)-504(consist)-504(of)-498(short)-504(vertical)-504(runs)-498(of)-504(piping)-498(wherever)]TJ T* [(practicable)-414(in)-414(freezing)-414(areas.)-834(Decks)-414(with)-420(open)-414(block-out)]TJ T* [(type)-486(of)-486(rail)-492(installations)-486(should)-486(be)-486(provided)-492(with)-486(block-)]TJ T* [(out)-390(drains.)-774(Size)-390(of)-384(roof)-390(and)-390(deck)-384(drains)-390(should)-384(be)-390(based)]TJ T* [(on)-492(the)-486(greater)-486(of)-492(applicable)-486(code)-492(requirements)-486(or)-486(maxi-)]TJ T* [(mum)-528(1-hr)-528(rainfall)-528(figures)-528(for)-534(the)-528(area.)-1056(Deluge)-534(system)]TJ T* [(flows)-336(should)-336(be)-336(added)-336(where)-336(applicable.)]TJ /F4 1 Tf 22.122 -4.776 TD (11-3)Tj ET endstream endobj 140 0 obj <> endobj 141 0 obj <>/Font<>/ProcSet[/PDF/Text]>> endobj 142 0 obj <>stream BT /F4 1 Tf 10 0 0 10 54 748.32 Tm 0 g BX /GS1 gs EX 0 Tc [(EM)-336(1110-2-4205)]TJ 0 -1.2 TD [(30)-336(Jun)-336(95)]TJ /F8 1 Tf 1.452 -2.37 TD [(c.)-1238(Floor)-336(drainage)]TJ /F6 1 Tf 8.1566 0 TD 0 Tw (.)Tj -8.1566 -2.4 TD [(\(1\))-672(Drainage)-498(galleries.)-990(Drainage)-498(galleries)-492(and)-498(other)]TJ -1.452 -1.2 TD [(galleries)-384(with)-384(a)-384(wall)-384(in)-384(contact)-390(with)-384(water)-384(or)-384(a)-384(fill)-390(below)]TJ T* [(high)-408(tailwater)-408(should)-408(be)-408(provided)-408(with)-408(a)-408(drainage)-408(trench.)]TJ T* [(The)-624(trench)-630(should)-624(be)-630(sized)-624(and)-630(graded)-624(for)-630(maximum)]TJ T* [(estimated)-426(leakage)-420(based)-426(on)-420(existing)-426(similar)-420(powerhouses.)]TJ T* [(Unless)-492(located)-486(in)-492(grouting)-486(galleries,)-492(trenches)-492(should)-486(not)]TJ T* [(cross)-450(contraction)-450(joints)-450(without)-450(provision)-450(of)-450(water)-450(stops.)]TJ T* [(Conduits)-564(connecting)-564(the)-570(trenches)-564(to)-564(the)-564(drainage)-564(sump)]TJ T* [(and)-396(the)-396(conduit)-396(entrances)-402(should)-396(be)-396(carefully)-396(designed)-402(to)]TJ T* [(preclude)-564(overflow)-570(of)-570(the)-564(trench)-570(onto)-570(the)-564(gallery)-570(floor.)]TJ T* [(Contraction)-444(joint)-444(drains)-444(should)-450(discharge)-444(visibly)-444(into)-450(the)]TJ T* [(drainage)-408(trench)-402(to)-408(permit)-408(monitoring)-402(of)-408(joint)-408(leakage.)-810(A)]TJ T* [(float-operated)-384(alarm)-384(should)-378(be)-384(provided)-384(to)-384(indicate)-384(flood-)]TJ T* [(ing)-336(of)-336(the)-336(lowest)-336(gallery.)]TJ 1.452 -2.4 TD 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[(\(3\))-672(Battery)-372(room.)-744(Battery)-372(room)-372(floor)-372(and)-366(sink)-372(drains)]TJ -1.452 -1.2 TD [(should)-612(be)-606(of)-612(acid)-606(resisting)-612(material,)-606(have)-612(a)-606(minimum)]TJ T* [(2)-336(percent)-372(slope,)-372(no)-372(pockets)-366(or)-372(traps,)-366(and)-372(should)-366(discharge)]TJ T* [(directly)-336(to)-336(the)-336(sump)-336(or)-336(tailrace.)]TJ 1.452 -2.4 TD [(\(4\))-672(Miscellaneous)-594(area)-600(floor)-594(drains.)-1188(Miscellaneous)]TJ -1.452 -1.2 TD [(area)-480(floor)-480(drains)-480(should)-480(be)-486(provided)-480(in)-480(accordance)-480(with)]TJ T* [(ASME)-336(A)-372(31.1)-372(and)-372(the)-372(Unified)-372(Plumbing)-372(Code.)-738(All)-372(floor)]TJ T* [(areas)-600(below)-606(average)-600(peak-flow)-600(tailwater,)-600(and)-606(all)-600(other)]TJ T* [(floor)-456(areas)-450(subject)-456(to)-450(flushing,)-456(leakage)-450(from,)-456(or)-450(periodic)]TJ T* [(disassembly)-360(of)-360(water-filled)-354(equipment)-360(or)-360(piping)-360(should)-360(be)]TJ T* [(drained.)-672(Any)-336(drains)-342(that)-336(come)-336(from)-336(a)-336(source)-342(that)-336(can)-336(add)]TJ T* [(oil)-426(to)-426(the)-426(water)-420(should)-426(not)-420(drain)-426(directly)-420(to)-426(tailwater)-420(but)]TJ T* [(should)-522(first)-528(be)-528(routed)-522(to)-528(an)-528(oil)-528(separator)-522(facility.)-1056(The)]TJ T* [(following)-432(areas)-438(are)-438(typical)-432(of)-438(most)-432(powerhouses,)-438(but)-438(the)]TJ T* [(required)-444(areas)-450(of)-444(each)-450(powerhouse)-444(should)-450(be)-444(determined)]TJ T* (individually:)Tj 1.452 -2.4 TD [(\(a\))-672(Turbine)-336(rooms.)]TJ T* [(\(b\))-672(Galleries.)]TJ T* [(\(c\))-672(Water)-336(treatment)-336(room.)]TJ T* [(\(d\))-672(Pump)-336(rooms.)]TJ 26.7 61.212 TD [(\(e\))-672(Locker)-336(rooms.)]TJ 0 -2.4 TD [(\(f\))-672(Toilet)-336(rooms.)]TJ T* [(\(g\))-672(Machine)-336(shop.)]TJ T* [(\(h\))-672(Heating)-336(and)-336(ventilating)-336(equipment)-336(room.)]TJ T* [(\(i\))-672(Gate)-336(repair)-336(pits.)]TJ T* [(\(j\))-672(Gate)-336(and)-336(bulkhead)-336(storage)-336(pits.)]TJ T* [(\(k\))-672(Pipe)-336(trenches.)]TJ T* [(\(l\))-672(Elevator)-336(pits.)]TJ T* [(\(m\))-672(Rigging)-336(rooms.)]TJ T* [(\(n\))-672(Valve)-336(pits.)]TJ T* [(\(5\))-672(Location)-492(of)-492(floor)-492(drains.)-984(Locating)-492(floor)-492(drains)]TJ -1.872 -1.2 TD [(requires)-546(close)-552(coordination)-546(with)-552(structural)-546(and)-552(architec-)]TJ T* [(tural)-630(requirements,)-624(but)-630(the)-624(following)-630(general)-624(consider-)]TJ T* [(ations)-336(should)-336(apply.)]TJ 1.872 -2.4 TD [(\(a\))-672(All)-534(areas)-534(where)-534(leakage,)-534(rainwater,)-528(water)-534(from)]TJ -1.872 -1.2 TD [(disassembly,)-546(flushing,)-546(etc.,)-552(is)-546(normally)-546(expected)-552(should)]TJ T* [(have)-510(floors)-516(with)-510(continuous)-510(slope)-510(to)-516(the)-510(drain)-510(location.)]TJ T* [(Examples)-672(of)-666(these)-672(areas)-666(are)-666(around)-672(pumps,)-666(strainers,)]TJ T* [(janitor)-576(closets,)-582(outside)-582(decks,)-582(shower)-582(rooms,)-582(unloading)]TJ T* [(areas,)-336(and)-336(drainage)-336(galleries.)]TJ 1.872 -2.4 TD [(\(b\))-672(In)-462(other)-468(areas)-462(with)-468(unfinished)-462(level)-468(floors,)-462(it)-468(is)]TJ -1.872 -1.2 TD [(desirable)-354(to)-360(locate)-354(drains)-360(in)-354(the)-354(center)-360(of)-354(a)-360(910-1,220-mm)]TJ T* [(\(36-48-in.\))-486(depressed)-480(area)-486(to)-486(assist)-486(in)-480(directing)-486(water)-486(to)]TJ T* [(the)-336(drain.)]TJ 1.872 -2.4 TD [(\(c\))-672(In)-390(finished)-390(areas)-390(\(terrazzo,)-384(tile\))-390(where)-390(slope)-390(or)-390(a)]TJ -1.872 -1.2 TD [(depressed)-360(area)-360(can)-366(not)-360(be)-366(obtained,)-360(the)-366(drain)-360(location)-366(and)]TJ T* [(elevation)-336(should)-336(be)-336(determined)-336(by)-336(the)-336(architect.)]TJ /F8 1 Tf 1.872 -2.412 TD [(d.)-690(Equipment)-336(wastewater)-336(drainage)]TJ /F6 1 Tf 14.6112 0 TD (.)Tj -14.6112 -2.4 TD [(\(1\))-672(Gravity)-588(wastewater.)-1176(The)-588(following)-588(equipment)]TJ -1.872 -1.2 TD [(wastewater)-480(is)-480(normally)-480(drained)-480(to)-480(the)-480(sump)-486(through)-480(the)]TJ T* [(drainage)-336(system)-336(piping:)]TJ 1.872 -2.4 TD [(\(a\))-672(Pump)-336(gland)-336(drainage.)]TJ T* [(\(b\))-672(Strainer)-336(drains.)]TJ T* [(\(c\))-672(Condensate.)]TJ /F4 1 Tf -28.152 -4.788 TD (11-4)Tj ET endstream endobj 143 0 obj <> endobj 144 0 obj <>/Font<>/ProcSet[/PDF/Text]>> endobj 145 0 obj <>stream BT /F4 1 Tf 10 0 0 10 482.94 748.32 Tm 0 g BX /GS1 gs EX 0 Tc [(EM)-336(1110-2-4205)]TJ 2.832 -1.2 TD [(30)-336(Jun)-336(95)]TJ /F6 1 Tf -44.274 -2.358 TD [(\(d\))-672(Air)-336(compressor)-336(cooling)-336(water.)]TJ 0 -2.4 TD [(\(e\))-672(Turbine)-336(head)-336(cover)-336(leakage.)]TJ T* [(\(f\))-672(Heat)-336(exchanger.)]TJ T* [(\(g\))-672(Turbine)-336(pit)-336(liner)-336(drainage.)]TJ -1.452 -2.4 TD [(Drainage)-702(should)-702(be)-708(collected)-702(and)-702(piped)-702(to)-702(the)-702(floor)]TJ 0 -1.2 TD [(drains,)-444(sealed)-444(connections,)-438(or)-444(sight)-444(funnels.)-882(Open)-444(flows)]TJ T* [(running)-372(horizontally)-366(across)-372(floors)-366(or)-372(drain)-372(lines)-366(should)-372(be)]TJ T* [(avoided.)-1044(Francis-type)-522(turbines)-522(are)-522(normally)-522(drained)-522(by)]TJ T* [(gravity,)-444(and)-438(drainage)-444(from)-444(propeller)-438(turbines)-444(is)-444(normally)]TJ T* [(pumped)-450(out)-456(of)-450(the)-450(turbine)-456(pits)-450(with)-456(pumps)-450(furnished)-450(by)]TJ T* [(the)-390(turbine)-384(manufacturer.)-774(Capacity)-390(of)-384(gravity)-390(drain)-384(pipes)]TJ T* [(may)-882(be)-876(estimated)-882(from)-876(Appendix)-336(B,)-882(paragraph)-336(B-6,)]TJ T* [(\252Capacity)-336(of)-336(Cast)-336(Iron)-336(Drain)-336(Lines.\272)]TJ 1.452 -2.4 TD [(\(2\))-672(Pressure)-336(wastewater.)]TJ T* [(\(a\))-672(Wastewater)-348(from)-342(generator)-342(air)-342(coolers)-342(and)-342(bearing)]TJ -1.452 -1.2 TD [(coolers)-402(are)-408(normally)-408(piped)-408(directly)-402(to)-408(the)-408(tailrace.)-810(Some)]TJ T* [(powerhouses)-474(also)-474(require)-474(pressure)-474(drains)-474(for)-480(transformer)]TJ T* [(cooling)-336(water)-336(and)-336(air)-336(conditioning)-336(cooling)-336(water.)]TJ 1.452 -2.4 TD [(\(b\))-672(The)-342(point)-342(of)-342(discharge)-342(for)-342(pressure)-342(drains)-342(requires)]TJ -1.452 -1.2 TD [(careful)-762(consideration)-768(as)-768(several)-768(factors)-768(are)-768(involved.)]TJ T* [(These)-336(include)-336(the)-336(following:)]TJ 1.452 -2.4 TD [(\267)-1582(Tailwater)-336(fluctuations.)]TJ T* [(\267)-1582(Available)-336(head)-336(\(where)-336(the)-336(source)-336(is)-336(pool)-336(water\).)]TJ T* 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[(more)-462(relief)-462(valves.)-918(A)-462(slightly)-462(undersized)-462(relief)-462(valve)-462(is)]TJ T* [(preferable)-426(to)-426(an)-426(oversized)-426(valve)-420(to)-426(minimize)-426(erosion)-426(due)]TJ T* [(to)-486(near)-486(shutoff)-486(operation.)-972(A)-486(manual)-486(bypass)-486(around)-486(the)]TJ T* [(pressure-reducing)-378(valve)-378(is)-372(permissible;)-378(however,)-378(the)-378(max-)]TJ T* [(imum)-378(flow)-378(capacity)-378(of)-384(the)-378(bypass)-378(should)-378(be)-378(less)-378(than)-384(the)]TJ T* [(relief)-546(capacity)-546(of)-552(the)-546(low-pressure)-546(system.)-1092(A)-546(pressure)]TJ T* [(gauge)-594(should)-594(be)-594(provided)-594(on)-594(the)-588(low-pressure)-594(system.)]TJ T* [(The)-750(designer)-756(should)-750(be)-756(aware)-750(that)-756(pressure-reducing)]TJ T* [(valves,)-480(as)-480(well)-480(as)-480(relief)-474(valves,)-480(are)-480(subject)-480(to)-480(wear)-480(and)]TJ T* 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[(coatings)-372(to)-372(protect)-372(ferrous)-366(materials)-372(in)-372(exterior)-372(exposures.)]TJ T* [(Similar)-378(choices)-378(are)-378(used)-378(for)-378(interior)-378(exposures,)-384(dehumidi-)]TJ T* [(fication,)-336(and)-336(insulation.)]TJ /F8 1 Tf 1.872 -2.412 TD [(g.)-690(Galvanic)-576(couples.)]TJ /F6 1 Tf 10.1326 0 TD [(Where)-576(galvanic)-576(coupling)-576(of)]TJ -12.0046 -1.2 TD [(dissimilar)-372(metals)-372(is)-366(expected)-372(to)-372(cause)-372(corrosion)-372(problems,)]TJ T* [(the)-684(choices)-684(for)-684(prevention)-684(include)-678(dielectric)-684(isolation,)]TJ T* [(coating)-450(of)-456(both)-450(metals,)-456(or)-450(cathodic)-456(protection.)-906(Uninten-)]TJ T* [(tional)-570(galvanic)-564(couples)-564(such)-564(as)-570(ferrous)-564(underground)-564(or)]TJ T* [(immersed)-498(piping,)-498(which)-498(is)-498(metallically)-498(connected)-498(to)-498(the)]TJ T* 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290.724 530.52 m 357.36 543.84 m S 357.36 544.56 88.8 -0.72 re f* 357.36 526.32 m S 357.36 544.56 0.72 -18.24 re f* BT 8 0 0 8 364.5 530.52 Tm [(0.8)-330(\(2.6\))]TJ ET 394.708 530.52 m 445.92 543.84 m S 445.92 544.56 112.08 -0.72 re f* 445.92 526.32 m S 445.92 544.56 0.72 -18.24 re f* BT 8 0 0 8 460.92 530.52 Tm [(6)-990(\(100\))]TJ ET 491.96 530.52 m 54 525.6 m S 54 526.32 98.16 -0.72 re f* BT 8 0 0 8 62.64 512.4 Tm [(152)-660(\(6\))]TJ ET 91.04 512.4 m 152.16 525.6 m S 152.16 526.32 90.48 -0.72 re f* 152.16 508.08 m S 152.16 526.32 0.72 -18.24 re f* BT 8 0 0 8 159.12 512.4 Tm [(0.8)-330(\(2.5\))]TJ ET 189.328 512.4 m 242.4 525.6 m S 242.4 526.32 115.2 -0.72 re f* 242.4 508.08 m S 242.4 526.32 0.72 -18.24 re f* BT 8 0 0 8 254.82 512.4 Tm [(14.2)-660(\(225\))]TJ ET 294.339 512.4 m 357.36 525.6 m S 357.36 526.32 88.8 -0.72 re f* 357.36 508.08 m S 357.36 526.32 0.72 -18.24 re f* BT 8 0 0 8 364.5 512.4 Tm [(1.1)-330(\(3.6\))]TJ ET 394.708 512.4 m 445.92 525.6 m S 445.92 526.32 112.08 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-0.72 re f* 357.36 435.6 m S 357.36 453.84 0.72 -18.24 re f* BT 8 0 0 8 364.5 439.92 Tm [(2.3)-330(\(7.4\))]TJ ET 394.708 439.92 m 445.92 453.12 m S 445.92 453.84 112.08 -0.72 re f* 445.92 435.6 m S 445.92 453.84 0.72 -18.24 re f* BT 8 0 0 8 455.64 439.92 Tm [(255)-660(\(4050\))]TJ ET 497.383 439.92 m 54 435.12 m S 54 435.84 98.16 -0.72 re f* BT 8 0 0 8 62.64 421.8 Tm [(457)-330(\(18\))]TJ ET 92.848 421.8 m 152.16 435.12 m S 152.16 435.84 90.48 -0.72 re f* 152.16 417.6 m S 152.16 435.84 0.72 -18.24 re f* BT 8 0 0 8 159.12 421.8 Tm [(1.8)-330(\(6.0\))]TJ ET 189.328 421.8 m 242.4 435.12 m S 242.4 435.84 115.2 -0.72 re f* 242.4 417.6 m S 242.4 435.84 0.72 -18.24 re f* BT 8 0 0 8 252.18 421.8 Tm [(299.7)-330(\(4750\))]TJ ET 297.955 421.8 m 357.36 435.12 m S 357.36 435.84 88.8 -0.72 re f* 357.36 417.6 m S 357.36 435.84 0.72 -18.24 re f* BT 8 0 0 8 364.5 421.8 Tm [(2.6)-330(\(8.4\))]TJ ET 394.708 421.8 m 445.92 435.12 m S 445.92 435.84 112.08 -0.72 re f* 445.92 417.6 m S 445.92 435.84 0.72 -18.24 re f* BT 8 0 0 8 455.64 421.8 Tm [(416)-660(\(6600\))]TJ ET 497.383 421.8 m 54 416.88 m S 54 417.6 98.16 -0.72 re f* BT 8 0 0 8 62.64 403.68 Tm [(533)-330(\(21\))]TJ ET 92.848 403.68 m 152.16 416.88 m S 152.16 417.6 90.48 -0.72 re f* 152.16 399.36 m S 152.16 417.6 0.72 -18.24 re f* BT 8 0 0 8 159.12 403.68 Tm [(2.0)-330(\(6.7\))]TJ ET 189.328 403.68 m 242.4 416.88 m S 242.4 417.6 115.2 -0.72 re f* 242.4 399.36 m S 242.4 417.6 0.72 -18.24 re f* BT 8 0 0 8 252.18 403.68 Tm [(454.2)-330(\(7200\))]TJ ET 297.955 403.68 m 357.36 416.88 m S 357.36 417.6 88.8 -0.72 re f* 357.36 399.36 m S 357.36 417.6 0.72 -18.24 re f* BT 8 0 0 8 364.5 403.68 Tm [(2.9)-330(\(9.4\))]TJ ET 394.708 403.68 m 445.92 416.88 m S 445.92 417.6 112.08 -0.72 re f* 445.92 399.36 m S 445.92 417.6 0.72 -18.24 re f* BT 8 0 0 8 455.64 403.68 Tm [(637)-330(\(10100\))]TJ ET 499.191 403.68 m 54 398.88 m S 54 399.6 98.16 -0.72 re f* BT 8 0 0 8 62.64 385.56 Tm [(610)-330(\(24\))]TJ ET 92.848 385.56 m 152.16 398.88 m S 152.16 399.6 90.48 -0.72 re f* 152.16 381.36 m S 152.16 399.6 0.72 -18.24 re f* BT 8 0 0 8 159.12 385.56 Tm [(2.3)-330(\(7.4\))]TJ ET 189.328 385.56 m 242.4 398.88 m S 242.4 399.6 115.2 -0.72 re f* 242.4 381.36 m S 242.4 399.6 0.72 -18.24 re f* BT 8 0 0 8 252.18 385.56 Tm (662.4\(10500\))Tj ET 299.763 385.56 m 357.36 398.88 m S 357.36 399.6 88.8 -0.72 re f* 357.36 381.36 m S 357.36 399.6 0.72 -18.24 re f* BT 8 0 0 8 364.5 385.56 Tm (3.2\(10.4\))Tj ET 396.515 385.56 m 445.92 398.88 m S 445.92 399.6 112.08 -0.72 re f* 445.92 381.36 m S 445.92 399.6 0.72 -18.24 re f* BT 8 0 0 8 455.64 385.56 Tm [(927)-330(\(14700\))]TJ ET 499.191 385.56 m 54 380.64 m S 54 381.36 98.16 -0.72 re f* BT 8 0 0 8 62.64 367.44 Tm [(686)-330(\(27\))]TJ ET 92.848 367.44 m 152.16 380.64 m S 152.16 381.36 90.48 -0.72 re f* 152.16 363.12 m S 152.16 381.36 0.72 -18.24 re f* BT 8 0 0 8 159.12 367.44 Tm [(2.5)-330(\(8.1\))]TJ ET 189.328 367.44 m 242.4 380.64 m S 242.4 381.36 115.2 -0.72 re f* 242.4 363.12 m S 242.4 381.36 0.72 -18.24 re f* BT 8 0 0 8 252.18 367.44 Tm (908.5\(14400\))Tj ET 299.763 367.44 m 357.36 380.64 m S 357.36 381.36 88.8 -0.72 re f* 357.36 363.12 m S 357.36 381.36 0.72 -18.24 re f* BT 8 0 0 8 364.5 367.44 Tm (3.4\(11.1\))Tj ET 396.515 367.44 m 445.92 380.64 m S 445.92 381.36 112.08 -0.72 re f* 445.92 363.12 m S 445.92 381.36 0.72 -18.24 re f* BT 8 0 0 8 453 367.44 Tm [(1274)-330(\(20200\))]TJ ET 500.999 367.44 m 54 362.64 m S 54 363.36 98.16 -0.72 re f* BT 8 0 0 8 62.64 349.32 Tm [(762)-330(\(30\))]TJ ET 92.848 349.32 m 152.16 362.64 m S 152.16 363.36 90.48 -0.72 re f* 152.16 345.12 m S 152.16 363.36 0.72 -18.24 re f* BT 8 0 0 8 159.12 349.32 Tm [(2.7)-330(\(8.7\))]TJ ET 189.328 349.32 m 242.4 362.64 m S 242.4 363.36 115.2 -0.72 re f* 242.4 345.12 m S 242.4 363.36 0.72 -18.24 re f* BT 8 0 0 8 249.54 349.32 Tm (1205.0\(19100\))Tj ET 301.571 349.32 m 357.36 362.64 m S 357.36 363.36 88.8 -0.72 re f* 357.36 345.12 m S 357.36 363.36 0.72 -18.24 re f* BT 8 0 0 8 364.5 349.32 Tm (3.7\(12.2\))Tj ET 396.515 349.32 m 445.92 362.64 m S 445.92 363.36 112.08 -0.72 re f* 445.92 345.12 m S 445.92 363.36 0.72 -18.24 re f* BT 8 0 0 8 453 349.32 Tm [(1697)-330(\(26900\))]TJ ET 500.999 349.32 m 54 344.4 m S 54 345.12 98.16 -0.72 re f* BT 8 0 0 8 62.64 331.2 Tm [(914)-330(\(36\))]TJ ET 92.848 331.2 m 152.16 344.4 m S 152.16 345.12 90.48 -0.72 re f* 152.16 326.88 m S 152.16 345.12 0.72 -18.24 re f* BT 8 0 0 8 159.12 331.2 Tm [(3.0)-330(\(9.8\))]TJ ET 189.328 331.2 m 242.4 344.4 m S 242.4 345.12 115.2 -0.72 re f* 242.4 326.88 m S 242.4 345.12 0.72 -18.24 re f* BT 8 0 0 8 249.54 331.2 Tm (1955.8\(31000\))Tj ET 301.571 331.2 m 357.36 344.4 m S 357.36 345.12 88.8 -0.72 re f* 357.36 326.88 m S 357.36 345.12 0.72 -18.24 re f* BT 8 0 0 8 364.5 331.2 Tm (4.2\(13.9\))Tj ET 396.515 331.2 m 445.92 344.4 m S 445.92 345.12 112.08 -0.72 re f* 445.92 326.88 m S 445.92 345.12 0.72 -18.24 re f* BT 8 0 0 8 453 331.2 Tm [(2776)-330(\(44000\))]TJ ET 500.999 331.2 m 54 326.4 m S 54 327.12 98.16 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