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1 <br />� Geotechnical Engineering Study <br />00-2267 Three Story Addition - 500 Laurei Street, Everett <br />IJanuary 31, 2001 - <br />■ Minimum recommended width o� <br />18 inches <br />Iperimeter footings <br />- 18 inches <br />I ■ Minimum recommended depth of buri� I - <br />of perimeter footings (below the Io�Nes� <br />adjacent exterior site grade) <br />l. <br />Page 21 <br />3 feet <br />■ Minimum recommende�d�ane a� e'rtical load <br />of column footing supp g <br />of < 25 kips <br />■ Minimum recommended lateral dimension = <br />5 feet <br />of column footing suppoRing a vertical load <br />of >25 kips <br />■ Minimum recommended depth of burial of = 18 inches <br />interior column footing below floor slab <br />A one-third increase in the above allowable soil bearing pressure may be used <br />when considering short term transitory wind and seismic loads. <br />In any areas where a continuous footing crosses a cut-to-fill transition we <br />recommend additional reinforcement be used in the tep °nfour'expe�ence rtwo'#4 <br />the potential for differential settlement-related damag u ose. As a typical guide, <br />or #5 reinforcing bars are typically adequate for this � rp <br />we recommend the additional reinforcement extend for a distance of at least ten <br />(10) feet on either side of the tr�he�tneednfor, sh e� number�, Uand location �of su h <br />engineer evaluate and verify <br />additional reinforcing steel. <br />Should portions of any column foundation be located in a cut to fill transition area, <br />the foundation sho orted onra stn ,;�u�ed'd'�hat should betat least rtwo eet hP k or <br />native soii or supp <br />on a lean concrete pad raise d t o f o � n d a t i o n i n v e r t elevation. This form of <br />foundation support is pictorially depicted on Plate 5, attached. <br />� <br />