2013-00541 - new structure - Laserfiche WebLink

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A qualified geotechnical engineer shall confirm the assumed allowable soil bearing pressure in a geotechnical report, and the site shall be prepared in accordance. Any discrepancies in the assumed allowable soil bearing pressure shall be reported immediately. Remove all top soil, uncompacted fill, or other poor soil from the construction area. Slope the site to drain away from the building. Install gutters and downspouts with long extensions. Install drain tile. Backfill with granular soils. FOOTINGS/FOUNDATIONS All footings are to be formed. All stumps, roots and debris must be removed from the soil to a depth of at least 12" below the surface of the ground in the area occupied by the building. Footings shall be placed on virgin soil or compacted granular fill. Wall footings are cast-in-place concrete with continuous reinforcing placed 3"clear of bottom and 2"clear at top and sides. Wall footings are centered under walls and column footings under columns. Wall footings shall be a minimum of 10" thick with a 4" projection each side of wall. Reinforce with 2 -#4 continuous bottom bars. Column footings shall be a minimum of 12" thick, with plan dimensions as shown on drawing. Reinforce with#4 bottom bars at 8"o.c. each way. Provide 30 bar diameter lap at splices and full crossing lap at corners and intersections. Tie all reinforcing in place. Set footing reinforcing on chairs or masonry brick to obtain 3"clearance from bottom of footing. Maintain minimum frost depth of 42"for all exterior footings. Top of footing shall be placed 8" below the top of slabs on grade, or placed to maintain frost depth, whichever is deeper. Step footings in a uniform manner using a 2:1 horizontal to vertical slope. Cast dowels in footing for foundation walls above. Dowels shall be the same quantity, size, and spacing as the vertical wall reinforcing. Dowels shall be 30" long and extend to 3"clear of bottom of footing. Contractor shall be responsible for implementing hot weather concrete requirements per ACI 305 and cold weather concrete requirements per ACI 306. Shore all foundation walls appropriately before backfilling and compacting. Where foundation walls support unbalanced load on opposite sides of the building, such as a daylight basement, the rim board shall be attached to the sill with a 20 gage metal angle clip at 24" o.c., with five 8d nails per leg, or a connector supplying 230 pounds per lineal foot capacity. Foundations supporting wood shall extend at least 6"above the adjacent finished grade. At foundation endwalls, provide perpendicular full-height blocking at 24"o.c. in the first three joist spaces. Glue and nail to joists and subfloor. Attach to sill plate with 2- USP MP5 clips or equal. The contractor shall verify the location of all existing underground utilities and tanks prior to beginning excavation. The contractor shall follow Figure R403.1.7.1 for foundation clearances to slopes unless indicated otherwise by the soils engineer. CONCRETE Provide ready-mixed concrete per ASTM C94. Portland cement shall be ASTM C150, Type I. Use only one brand of cement throughout the work. Provide concrete aggregates meeting the requirements of ASTM C33. Maximum aggregate size shall be 3/4"for grade beams and slabs. Water shall be clean, free of deleterious amounts of acids, alkalis, or organic materials, and shall be considered potable. Provide admixtures to reduce water content, provide air-entrainment, or alter the quality of the concrete to meet the job conditions. Reinforce poured concrete walls with#4 at 12"o.c. horizontally and#4 at 12"o.c. vertically each face unless noted. Place reinforcing 2"clear to outside face and 1"clear to inside face of concrete wall. Provide#4 x 4'-0"long(equal legs) horizontal reinforcing corner bars at 12"o.c. at outside corner of wall