4808 BELVEDERE AVE 2016-01-01 MF Import

Timber6uild Homes JN 05357 September 20, 2005 Page 5 anticipated that the total post-construction settlement of footinga founded on competent native soil, or on str�ctural fill up to 5 feet in thickness, will be about 3/4 inch, with difterential settlements on the order of 3/4 inch in a distance of 50 feet along a continuous footing with a uniform load. Lateral loads due to wind or seismic forces may be resisted by frict(on between the foundation and the bearing soil, or by passive earth pressure acting on the vertical, embedded portions of the foundation. For the latter condition, the foundation must be •:ither poured directly against relatively level, undisturbed soil or be surrounded by level structural fill. N/e recommend usiny the following ultimate values for the foundation's resistance to lateral loading: Coefficient of Frictlon 0,50 Passive Earth Pressure 300 pcf When: (q pef Is pound� p�r euble toot, and (II) pasdw s�rth pressun Is eompuGd minQ th� pulvd�nt fluld hndry. If the ground in front of a foundation is loose or sloping, the passive earth pressure given above will not be appropriate. We recommend maintaining a safety factor of at least 1.5 for the foundation's resistance to lateral loading, when using the above ultimate values. PERMANENT FOUNDATION AND RETA/N/NG WALLS Retaining walls backfilled on only one side should 5e designed to resist the lateral earth pressures imposed by the soil they retain. The �ollowing re::ommended parameters are for walls that restrain level backfill: Wharo: (I) pct is paunds per eubic l004 and (II) aetiv� and passl+e earth preanuree aro computad ueing tM pulvabnt Iluld prafturae. • For a rosValned w�ll that cannot dafl�et at I��st 0.002 tlme� Ib helgh4 a unlform latenl prosauro equal to 10 p�f tlma th� INIgM ot lhe wall ehould ba added to ths abow aellv� pulvd�nt fluld prossura. GEOTECH CONSULTANTS. INC.