3311 GRAND AVE 2016-01-01 MF Import

[�1 � y Cp",�H ayti y � i-�i � H� � H'sl y !A N ttl O � ON ��g �V a� 9 H t+1 4 t HH gN H C'1 C7 U� � r� r Z H t�i� y O �n � ry �; �a �. , August 15, 1991 Mr. Bob Norling G-0126 Page 8 A one-third increase in the above allowable bearing pressures can be used when considerin9 short-term transitory wind or seismic loads. �� We estimate should be settlement or less. that the maximum total post-construction settlement one-half (1/2) inch or less, and the differential across building width should be one-quarter (1/4) inch , Struatural Fill ° Structural fill is the fill placed under on-grade slabs, pavements and behind basement and retaining walls where the underlying soils , have to support loads. The structural fill should consist of clean soils with particles no larger than three inches and should be free of orqanic and other deleterious substances. The structural fill should be placed with a moisture content at or near its optimum moisture content. The optimum moisture content is the water content in the soil that enables the soil to be compacted to the highest dry density for a given compaction effort. �,q The on-site silty, gravelly sand to silty sand soils may be used as �, structural fill provided their moisture content is near the optimum moisture content. If the earth filling operation must be carried out during wet weather, the structural fill used should consist of " a clean, free-draining, granular soil containing not more than five percent finer than the No. 200 sieve based on the fraction of the material passing the No. 4 sieve. This will require imported material for the structural fill. �� rx r� The structural fill should be placed in no more than ]0-inch lifts in loose state, compacted to a minimum percentage of the maximum dry density determined by ASTM D1557-78 (Modified Proctor Method) as follows: Geo Consultanta Znc. ";�