Laserfiche WebLink
Puccinelli Residence <br /> Page No. 3 <br /> Summer or Fall Construction <br /> The building pad should be cleared of all weeds and vegetation. Once the <br /> building pad is cleared, the surface of the pad should be scarified to a depth of 6 <br /> inches and recompacted to dry densities in excess of 90 percent of the maximum dry <br /> density obtainable in the ASTM D1557 Compaction Test. It might be necessary to <br /> manipulate the soil to either dry it out or add moisture so that the proper amount <br /> of moisture exists in order to obtain the required densities. Once the surface soils <br /> have been scarified and recompacted, any fill that may be required should be placed <br /> and compacted at a minimum 90 percent relative compaction. The scarification, <br /> recompaction, and filling operations should extend a minimum of 5 feet beyond the <br /> building pad. On site soils may be used for fill. <br /> If grading is accomplished as specified, then the foundations for the proposed <br /> construction can consist of conventional spread footings and slab-on-grade. Footings should <br /> be carried to a minimum depth of 18 inches below finished grade. These foundations can <br /> be loaded to bearing capacities not to exceed 1500 pounds per square foot total load. <br /> Bearing capacities can be increased 1/3 for seismic and wind loads. Minimum width of <br /> footings should be established as 12 inches. If a higher bearing capacity is desired or if <br /> construction is taking place in the winter or spring (soft surface soils), footing depths may <br /> extend through the surface silty soil and bear on the cemented soils. A summary of the <br /> required depth of footings at each of the test pits is presented next: <br /> Test Pit # Required Footing, Depth, inches <br /> 1 30 <br /> 2 24 <br /> 3 22 <br /> Footings that bear on the cemented soils may be loaded to bearing capacities not to <br /> exceed 3000 pounds per square foot total load. This bearing capacity may also be increased <br /> 1/3 for seismic and wind loads. <br /> Regardless of the depth, footings should be continuously reinforced with a minimum <br /> of 1 - #4 bar top and bottom (total of 2 bars). The floor slab should be attached to the <br /> footings by #4 dowels spaced at 36 inch centers. Dowels should extend into the slab a <br /> minimum of 24 inches. The floor slab should be reinforced with either #3 bars at 24 inch <br /> centers each way or 6x6xl.4xl.4 wire mesh. It is recommended that the footing excavations <br /> p <br />