5107 SOUND AVE 2017-01-14 - Laserfiche WebLink

July 21, 2014 Two Single-Family residences L&A Job No. 14-065 Page 16 The lagging boards should be shimmed to leave 1/4-inch gap between boards and weep holes drilled in the bottom boards to allow water to seep thraugh. A layer of n�n-woven �ilter fabric liner, such as Mirafi 140NS or approved equal, should be tacked onto the back of the lagging boards to retain soil while allowing water ta flow through. Voids, if any, behind the lagging boards should be filled with clean free-draining coarse sand and tamped to have a tight contact with the lagging boards. BUILDING FOUNDATIONS Conventional fooiing foundations may be used to support the proposed new residences. �_•; 'xC� _::+.L r��. .a � 3, �.,i.� l-,� �-r,•-cj~�ir,#Prl t-i� 3?T 1TifO t�'l� lllCli�teil�Tll1a9 har�i clayey silt _.... .._ �., .__.... _ . . , soil and/ar medium-dense advance outwas� sand depc�si�, or oi� s�ru�cu�a� i�ill �laced over these competent basal soils. The exposed soils in footing trenches should be compacted to a non-yielding state with a vibratory compactor and the structural fill should be placed and compacted per recomrmendations in the STRUC`I IJRAL. FILL of this report. Water should not be allowed ta accumulate in excavated footing trenches. Disturbed soils in footing trenches should be completely removed prior to pouring concrete for the %otings. If the above recommendations are followed, our recomrnended design criteria for footing foundations are as follows; • The allowable soil bearing pressure for design of footing foundations, including dead and live loads, should be no greater than 3,000 psf if constructed on or into above competent basal soils, and no greater than 2,500 psf if constructed on compacted structural fill placed over the com�etent basal soils. The footing LIU & ASSOCIATES, INC.