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Other Recommendations for Reducing Slab Cracking While not a geotechnical issue, the potential for slab cracking may also be reduced by careful control of water/cement ratio and stump of concrete. The contractor should take appropriate curing precautions during the pouring of concrete in hot weather to reduce racking of slabs. A slip sheet (or equivalent) can be utilized if grouted tile, marble tile, or other crack sensitive floor covering is planned directly on concrete slabs. New Driveway The minimum section required by the City can be used for a new driveway, if any, It there is no minimum requirements by the City, a 5-inch thick concrete slab (PCC) reinforced with #4 rebar (placed at mid-height of slaba) at 18 inches on centers both ways, or S-in. thick asphalt concrete (AC), or equivalent, over a 6-inch thick layer of aggregate base (AB) can be used. The aggregate base and subgrade should be properly compacted to a minimum of 95% and 90%, respectively, of the maximum density determined in accordance with ASTM D1557 prior to placement of the concrete slab Spraying the compacted subgrade soils with water should be performed prior to concrete pour If pavers are to be used, they must be properly designed by the civil engineer of record for this project and approved by the city prior to construction. Additional geotechnic data can be provided for design, if requested. Site Drainage In general, proper surface drainage should be checked, improved as needed, maintained to ensure surface water flows away from all structures. Requirements by city and applicable CBC (2022 CBC) should also be followed. Roof gutters should be properly provided. Roof drains, gutters and downspouts should be maintained to function as intended. Outlet drains should be kept open. Irrigation at the site, if any, should be kept to a minimum required to support plant life. In the future, sources of uncontrolled water, such as leaky sewer, water (domestic irrigation) or drainpipe, should be repaired if identified. Seismic Design We recommend the proposed new structure be structurally designed to meet applicable building codes and requirements of the controlling governmental agency. The seismic parameters provided in the "Seismicity" section of this report can be used. The civil/structural design engineer should consult with the project geotechnical consultant, if additional geotechnical information is needed for the seismic design. Cement Type For Concrete in Contact with On-Site Earth Materials 906 S Virlee St & #2 - <br />10111904212/9/2024