2931 W MARINE VIEW DR HAMPTON INN 2018-01-01 MF Import

KPFP ConsWting En9inccrs :i01 Fdlh avenue. Su�u� iGGO �l'dIIIC, ��JShintj[o�t 99! O1 O�. ( 206) G22-58? 2.. .: �:ti' 9?6-� :�: P ;2C6)o22-813C ad;�m radkCCilkp�<<p�] rn:�,v k�H c_cni from: Alma [madt�;jeff5;:��telconc�ts_us� Sent: hlonday, h1ay 06, 2013 5:10 Ph1 To: i.dam Radke Ce dtosleria�evere[hva.qov; Lehi Ailred; Ralph ]essop; d�nn�a�concreterionyesCcom; N�ck Leighton; Dennis Smith; Jce Llab Subject: Re: CTL Inspeccion Reports, KPFF CommenLs 04.26.13 C�ood :lflzrnoun Adant. hclo�e are �hc queslion thai }ou haue asked tioin iLc lollo��in � date ��j .I-'b.:o in thece dillrrcnt en�.:,l. \1� comincnts �re in Rcd l�hrre are 6 d:ues ihat arc in question, c�eh of those G dntc� h:��e �cntic.:c„n .�,lea,: :r� anadird tilt< . (�:t Pii.'(� ;��,• 'O1 � I> (�� ?'� -O��UU, ,AJam fiedkc �",A�I:mi Kadki n.l.��i(i��m= ��mfc ;11m l, Several qursfions a�ou[ U'•e al:aC�ncd nspech�•� r�port5. (Noh� ;ha; I�ve .nd'�c_atcd i•� red on ;hc attaChmCntS, thr ,lreas Uiat coincide ��nth the items I describe nelo�vl Paf�e 4(Test RepOrt #191: ThBre i5 refCrenee to �oncrete m�x type 01500 be�n,; used a: some of lhe elevdtor �, slainve'�I walls. Also, Ihe report indicates that the reqwre� design strength of these elements is 3000 psi Concmte mie ;ypc 01500 was not submitted or approved For use on this project. Concrete mis design tJ 01500 �vas submitted as a Slab on Grade M�x (See submittal #1 dated 1-14-13�. Contrete miv design tt01500 was prewously submitted and our revicw comments �Ssued in lanuary lVe had rejected mix d01500 ��vhith was intended for slab-on grade only) due to it's hi�h �,v; c r�ttio o( 056. Such high w/c raUos will result i� far more shrinkage and uacking than (or mixes with rypical lower w; c ratios, which we are accustomed to see�ng Also, the required design strength at all conuete walls should be 4000 p�i (per 57.01) 3000 psi is insirfficient. (Please see attachment 3-27-13). �he des�gn requirements for �valls and footinf�ti iti 4000 psi as per Uie nores on S1 O1. Thc Cylinder break tes[s show that the 28 day results mect the 4000 psi roqwrement found in the structural notes It is unfortunatc that a mistake was made �vhen ordenng the mnucte and then not detected at time o( placement I have talked to loe Zla� twice on the matter, as the representaUves of the no�nc ship we feel comfortable in going forward �vith the concrete that has been placed. !1s long as no budding todes has been breached we are accepting the concretr as is. If you see any (uriner concerns about this, please let us knav � t your earliest convenience Per your description, it is our understanding that the slab-on-grade mis tt01500 (which �v;�s noi approved) was wbstiluted, not only at some slab on-grade areas bul also at some o( the cast-in-place walls. As you have indicaled, the 28-day concrete break streng[hs of mix NO1500 are grcater (marginally) [han 4000 psi, the requ;red 23-day strength for the cast-in place walls Be advised that we d�d not approve of this ;ubstiwLon To prevnnt potential expensive correctiw� measures, ive hit;hly rr�nmmend that any future substitutlons be ;ubmltted for our rcvicw pnor to implementation Pa�e 5(Test Rrpnrt u161: There is reference io concretc mix type 01500 bcing used at some of the �valls Conc�ete m�s type 01500 was not submitted or approved (or use on this pro�ecL Conuete mix design tv 01500 was subm�ued as a Slab on Grade Mix (See submittal tt1 dated 1-14-13). ( Please see attachment 4-8-13) The venficaUon shows that the ryped report was transposed The insnectors hand written report shows that it is mix design 01550. Due to [he conuetc ��/