4719 BELVEDERE AVE 2016-01-01 MF Import

lune 28,2oG David and Judy King I,&A Job No. 6A07G Page 14 constructed with 4-inch-minimum s4mdard slecl pipes (4.5 inch outside diamcter by 0.237 inch wall). Pin piles should be drivcn with a hydraulic machanical hammer at Icust 850 pounds delivcrin6 600 blows per minute minimum, or a ditTcrential-nc�ing air hamrner at Ieast 600 pounds dclivcring 600 blows per minutc minimum, or cquivalcnt hammcrs. Pin pilcs should bc drivcn to pcnetrate through the surficial fill and loose soils and seateJ into the underlying dense Esperance Sand ancUor hard Whidbcy formation de�wsits. Euch pile should be driven to "refusaP' dcfined as "at Ieast 25 seconds of continuous driving for one inch of pile pe:netration". Pin piles of 4-inch standard pipc driven to "rcfusal" shoulJ be able to develop an ultim,itc bcarin�; capaciry of 18 tons per pile against aKial compressivc load. 7'he allowable �arin� cnpxity of pin pilcs should not bc morc than 9 tons per pilcs bascd an a factor of safcty of 2.0. A one-third incrcase in the abo� recommendcd nllowable pile bearing capaciry may be uxd when considciing short-tcm�, transitory, wind or scismic loads. �or long tcrm aorrosion protcctiun, stcrl f�in pilc� and thcir accessurics shuulJ bc galvuniud or coatcd ��ith biiu:ninous puint.. LATH:RA1. SUPPOK'I'S Duc to thc slenac.ncss n:�Wre ul�pin pilcs, thc capacity of vcrtical pin pilcs against latcr�l forcc is minim�l. �f pin piles are uscJ to support the building, thc resistance against latcral force on thc builJing may tx provided w�th battcrcd pin piles or ticback unchors. Battcred pin piles mny tx uscJ for resisting latcral fon�c in thc dircction away from th; stccp slopc. I3attcrcd pin pilc should not be inclineJ stceper than �V:I}l. Ticback nna �rs showd be used for resisting lateral force in the dircction towards the stec� slope. Pin piles nnd helical unchors nnd lhcir accessories shouW bc coatcd �eith asphaltic paint or �ah�.mizcd to providc long-tcrtn cortosion protcct:un. LIU & ASSOCIAT�S, INC.