500 LAUREL DR 2016-01-01 MF Import

Geotechnical Engineering Study 00-2267 Three Story Addition - 500 Laurel Street, Everett January 31, 2001 Page 22 Settlement: On the basis ofthe observed site soil conditions and our engineering analyses, and working on ti._ assumption that the foundations wiil bear on undisturbed or rzdensified silty sand or sand soils, or on a compactsd structural fill placed on a firm and competent silty sand or sandy silt soil, it is our opinion that the maximum settlement potential under the proposed combined building dead and live load: is likely to be within the building's tolerable limits. We estimate that the maximum potential settlement is likely to be of the following order: Maximum estimated settlement under = applied building dead and live load Maximum estimated differential settlement = across half build'+ng addition length < 3/4 inch <'/z inch The owner shnuld understand that the majurity of these magnitudes of total and differential settlement should be expected to occur as the dead loads are applied during the construction of the building. Tha remainder should be expected to occur after construction is completed. Lateral Load Resistance: Lateral loads can be resisted by a combination of passive pressures acting on the buried portions of the building and foundations, or friction between the concrete elements of the foundation and floor slab and the ur�derlying subgrade. �or the former, the concrete must be placed neat against competent native soil or compacted structural fill. We recommend the following parameter� be used in design. e Estimated passive pressure acting = 260 pcf against buried foundation element including 1.5 factor of sa�ety (Neglect upper 12 inches in design) ■ Estimated Coefficient of frictional resistance between the concrete foundation elements and subgrade � : 3y