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F4. Specify concrete mix with a minimum compressive strength of 3,000 <br />psi. -IRC R402.2 <br />F5. Submit a complete gravity Toad path design including roof, floors, walls, <br />columns, foundations and footings. Detail these elements on the <br />drawings. Submit a complete lateral -force resisting system design. <br />Detail these elements on the drawings. <br />F6. Show the top of foundation walls a minimum 6 inches above adjacent <br />finish grade. -IRC R404.1.6 <br />F7. Show minimum 1/2" foundation anchor bolts embedded minimum 7 inches <br />into the concrete or masonry. Show 3" by 3" by .229" square plate <br />washers for each bolt. Specify type, size and spacing of other bolts or <br />alternate plate fastening methods. -IRC R602.11.1. <br />F8. Show minimum 18 inch clearance for wood joists and 12 inches <br />clearance for wood girders in the crawlspace unless proper redwood or <br />pressure treated wood is specified. -IRC R317.1 <br />F9. Conditioned Crawlspace must show how it meets Code section R 408.3 <br />If venting the under floor : Minimum 1 sq ft for each 150 sq ft of under floor <br />area. One such ventilating opening shall be within 3 feet of each corner of <br />the building. -IRC R408 <br />F10. Concrete floor slabs, except those in unheated accessory structures, <br />shall have a vapor retarder consisting of a 6 mil (.006 inch) polyethylene <br />or approved vapor retarder with joints lapped not less than 6 inches <br />placed between the concrete floor slab and the base course or the <br />prepared sub -grade where no base course exists.—R506.2.3 <br />F11. Slab -on -grade floors with a floor surface less than 12 inches below <br />grade shall be insulated, R10 @ 2 feet or R15 @ 2 feet for heated slabs. <br />IRC- N1102.2.10 <br />F12. Note on foundation plans: For foundations rebar inspections for <br />foundation walls over 8 feet high, forms are not to be installed on one side <br />until after the rebar has been inspected and approved. <br />F13. Provide a perimeter foundation drain. Drained to an approved location, <br />show on site plan. R405 <br />F14. Provide a U-FER ground. Note this on foundation plan and in elect. <br />notes. E3608, NEC 250.50. <br />Page 5 of 21 <br />