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Veco Design Studio <br />June 3, 2024 <br />Project 10112-04 <br />Page 9 <br /> <br />b) A 4-inch thick granular layer should be placed below slab-on-grade. 10- <br />mil thick plastic vapor barrier is recommended to be installed at the mid <br />height the granular layer. <br /> <br />c) It is recommended that #4 bars on 12-inch on center or equivalent, both <br />ways, be provided as minimum reinforcement in slabs-on-grade. Joints <br />should be provided and slabs should be at least 6 inches thick. However, <br />the recommendations from the project structural engineer may be more <br />stringent. <br /> <br />d) The slab should be dowelled into the footings by #4 bars at a maximum <br />spacing of 12 inches. <br /> <br />e) The FFL should be at least 6 inches above highest adjacent grade, if <br />feasible. <br /> <br />f) The subgrade should be kept moist prior to the concrete pour. <br /> <br />5.4 Spread Foundations <br /> <br />The proposed addition can be founded on shallow spread footings. The minimum <br />criteria are presented below. <br /> <br />5.4.1 Dimensions/Embedment Depths <br /> <br /> Minimum Width <br />(ft) Below Lowest Finished Surface <br />1-story Wall Footings 1.0 2.0 <br />Square Column Footings <br />to 50 kip - 2.0 <br /> <br />5.4.2 Allowable Bearing Capacity <br /> <br />The following bearing capacities, based on the presumptive 2022 CBC <br />values are recommended for the foundation design. <br /> <br />Embedment Depth <br />(ft) <br />Allowable Bearing Capacity <br />(lb/ft2 <br />1.0 1,500 <br /> <br /> <br /> <br /> <br />