Laserfiche WebLink
Other Recommendations for Reducing Slab Cracking <br />While not a geotechnical issue, the potential for slab cracking may also be reduced by careful <br />control of water/cement ratio and stump of concrete. The contractor should take appropriate <br />curing precautions during the pouring of concrete in hot weather to reduce racking of slabs. <br />A slip sheet (or equivalent) can be utilized if grouted tile, marble tile, or other crack sensitive <br />floor covering is planned directly on concrete slabs. <br />New Driveway <br />The minimum section required by the City can be used for a new driveway, if any, It there is no <br />minimum requirements by the City, a 5-inch thick concrete slab (PCC) reinforced with #4 rebar <br />(placed at mid-height of slaba) at 18 inches on centers both ways, or S-in. thick asphalt concrete <br />(AC), or equivalent, over a 6-inch thick layer of aggregate base (AB) can be used. The aggregate <br />base and subgrade should be properly compacted to a minimum of 95% and 90%, respectively, <br />of the maximum density determined in accordance with ASTM D1557 prior to placement of the <br />concrete slab Spraying the compacted subgrade soils with water should be performed prior to <br />comerete pour <br />If pavers are to be used, they must be properly designed by the civil engineer of record for this <br />project and approved by the city prior to construction. Additional geotechnic data can be <br />provided for design, if requested. <br />Site Drainage <br />In general, proper surface drainage should be checked, improved as needed, maintained to <br />ensure surface water flows away from all structures. Requirements by city and applicable CBC <br />(2022 CBC) should also be followed. <br />Roof gutters should be properly provided. Roof drains, gutters and downspouts should <br />maintained to function as intended. Outlet drains should be kept open. <br />Irrigation at the site, if any, should be kept to a minimum required to support plant life. <br />In the future, sources of uncontrolled water, such as leaky sewer, water (domestic irrigation) or <br />drainpipe, should be repaired if identified. <br />Seismic Design <br />We recommend the proposed new structure be structurally designed to meet applicable <br />building codes and requirements of the controlling governmental agency. The seismic <br />parameters provided in the "Seismicity" section of this report can be used. The civil/structural <br />design engineer should consult with the project geotechnical consultant, if additional <br />geotechnical information is needed for the seismic design. <br />Cement Type For Concrete in Contact with On-Site Earth Materials <br />1927 & 1929 S <br />Hickory St2/12/2025