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L <br />LProposed McGbe Reaidence Remodel <br />Everett, WashinBWn <br />; project No. 6(3-9701022 <br />`- Page 12 <br />, �., � r.� •�� ,. ��,� ,� <br />�,�� .� �._., �� <br />Slab-on-giade floor sub�ades s6ould be pieparod in �cco�denoe with dx previwn aiu pee}+�retion <br />recommendetioos. (iiven the looae natuce of the txar-surfioe soiis it ia our cecomnxndtdon t6e upper <br />1 foot of netive mdJor muctwal fill below the capillery brak be compected to a minimum of 95 pacmt <br />of the modified Proctor maximum dry density. Below a 1 foot depth, any additionel c�mp�cnb�e <br />materisl should be canp�coed w a minimiun of 90 perces►t of modified Proctor m�ximum dry deasitY• <br />!t is rccommeoded tlmt the 9oa alab be undedein by � nomitnl4inch thickne�s of waahad ennhed tock <br />or pea gravel containing lesa d�en 3 percent fiees peasie6 the No. 200 sieve� besed on tlut aoil 5��ction <br />pess;ng the U.S. No. 4 sieve with et kast 30 percent retained on d�e U.S. No. 4 sieve. This Ityer of <br />granulu fill 'u inknded to � a a c�pillnY brak �d w�r�n� s�°. An imPen'ious moisaa�e <br />baaia �hould elso be pleced betwaa► the cepillery bKak �nd drc floor slab. If the bese oa�tae in coahct <br />with the vapor becrier has shup� anBule� Pmd�les, a 2-iach Wick �sad cushion layer or aeobexqle u <br />recommended in order to provide protecdon ageinst puncwre. My holes or punctures in the vepor <br />barrier membrane �iwuld be repaind Pnor W the plaament of tlte floor slab �. �� � <br />anticipated subgrsde conditions, it is andcipated dut conc[ete slabs could be designed usina st�ndvd <br />concrote tf�ickness and welded wire reinforecd criteria. Tl�e ecwel floa sleb desiQo, i�ludin� dtick�s. <br />reinforoing and joint details should be provided by t6e sttuctural enBitker• <br />F.►i�nn ctl ieM) n�Rt <br />With the recommended site preparation and monitoring, tl�e total end diffe�ential settlementa of <br />the floor slab wnstiucted as recommended are estimeted to be las tkwi 0.5 inch w6ich are cons�dered <br />within tolerable limits. <br />. �,�. � : � � � .,,. „ <br />It is rccommrndcd that the building be provided with a petimeter foodng draia aYstem to collect <br />free water. Foodng dwins, with clean outs, should consist of at least 4inch diameter, �ont�d.�P�V�C • <br />pipe fully enveloped in pea gravel or washed rock and be pleced et the footing sub�'acie <br />the outside perimeter of the fonndeGon. T6e pea Bravel envelope should be wrapp�d a► d�e toP and sidG+ <br />with a non-woven geotextile fabric to prevent tl�e mi6cation of fine gcained soils inw the drsin rxk. All <br />drainage systems should be sloped to drain by gravity to a stocro sewer or other suitable discheQe <br />Iocation. <br />