Laserfiche WebLink
Puccinelli Residence <br /> Page No. 2 <br /> Visual classification of each soil stratum encountered was made in the field by an <br /> engineer at the time the test pits were excavated. A description of each soil encountered <br /> and its in-situ condition is presented on the attached Log of Test Pits. <br /> The soils encountered in the test pits were reasonably uniform. The surface 1.0 to <br /> 2.0 feet consisted of a medium dense sandy silt, the top 6 inches of which were quite loose <br /> due to plowing. The surface soil was underlaid by a 1.0 foot stratum of medium dense <br /> clayey sandy silt. This was followed by a slightly cemented stratum of dense sandy silt that <br /> continued to the maximum depth explored. For a more detailed description of the soils <br /> encountered see the Log of Test Pits. <br /> The test pit logs show subsurface conditions at the date and location indicated and <br /> it is not warranted that they are representative of subsurface conditions at other locations <br /> and times. No ground water was encountered in the test pits at the time they were <br /> excavated, however the surface soils overlying the cemented soils were nearly saturated due <br /> to the recent rains and the low permeability of the cemented soils (perched subsurface <br /> water). <br /> From a soil engineering standpoint, it is our opinion that the site is suitable for <br /> development of the proposed residence, however, all of the conclusions and <br /> recommendations presented in this report should be incorporated in the design and <br /> construction of the project to avoid possible soil and foundation problems. The primary <br /> considerations for the subject project are the recompaction of the loose surface soils during <br /> grading operations and the time of year that the project is constructed. If construction is <br /> occurring in the winter or spring the saturated surface soils, resulting from perched water <br /> trapped above the cemented soils, could be quite soft and make access for construction <br /> equipment and grading of the building pad difficult. Because of this difficulty two sets to <br /> recommendations are presented. <br /> Winter or Spring Construction <br /> As indicated the surface 6 inches of soil encountered in the test pits is loose. <br /> The loose soils are not considered adequate to support the proposed slab-on-grade. <br /> However, if the surface soils are saturated, typical scarification and recompaction of <br /> these surface soils may be difficult. An alternative is to remove the top 6 inches of <br /> surface soil and replace with clean washed gravel, that does not require compaction. <br /> Any elevation increase in the pad grade should be accomplished by gravel fill. It <br /> might be advisable to excavate and pour the perimeter spread footings prior to <br /> making the gravel fill to prevent gravel from sloughing into the footing excavations <br /> and so that the footings can help retain the gravel. <br /> P,DER S0 <br /> � N <br /> Z W <br /> 7SSOG\ <br /> P <br />