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"FOUNOATION (.__(-':~DL/~ i~Foot~ngs shall bear on firm undisturbed (9 to be used to 'support foo ' 'g's -shall be engineered (report required) or shall be concrete. S. 2903-a 3. Foundation sections 12"/15"/18" wide, 6"/7"/8" thick and 12"/18"/24" depth below natural grade and finish grade are required. OUBC Table 29-a 4, Maximum slopes for unstabilized cuts and fills are 2 horizontal to I vertical. S 2903-a 5. Provide underfloor vents of 1½ sq. ft. per 25 lineal ft. of foundation wall, Openings to be in at least two walls and .qr the corners. OUBC 2617-c-6 Provide underfl'~or draihage if space s subject to potential storm or ground- water accumulation, S. 2910 7. Provide reinforcement for concrete walls over 4' in height, min. #4 bar spaced: horiz, o.c. vert. o.c. Bars shall be continuous with overlap of min, 10 diameters, One bar 4" from bottom and one 4" f~om top of foundation wall. 8. Extend ~ sill bolts, ~'in', 7, i5~o con- crete. Space max. 6' o.c. and within 12" of ends. 9. Provide min. 18" x 2¢" access to crawl space, located not over 20~ from plumbing cleanouts (OUPC 406-g) or furnace (OUMC 804-b). Pipes, ducts and other nonstructural construction shall not interfere with ac- cessability to or within the crawl space. OUB£ 2571-c 10. Vapor barriers shall be installed on the ground in crawl spaces and on the warm side of exterior walls. S. 5307 11. The required clearance for wood members above grade is 6" for mudsills, 12" for 'dr " " ' ~s and 18 for ~olsts. OUBC 2517-c ~2~ AI"I posts to be' mounted On appro~'~8 ~'~--~pports. CONSTRUCTION REOUIREMENTS 13] Cross bridge or solid block 2" floor joists over 12" in depth every 8' and solid block at s~pports. 14. Fire block studwalls and partitions (including furred spaces) at floor, ceiling, soffit and at mid height of walls over 10' in ~eight and ~lon~ stair stringers. OUBC 2517-f 15, Garage door header shall be min D. F. #2 with double cripples, 16. Use header, beam or rafter sizes noted on the plans. 17. Trusses shall be 6n§ineer approve~, 18. A ridge board not less in depth than the cut end of the rafter is required. It shall be a vertical load bearing member when roof slope is less than 3" in 12". OUBC 2518-g 19. Rafter t~es spaced max. 4' o.c. are re- quired immediately above ceiling joists which are not parallel to the rafters. OUBC 2518-g-4 20. Roof purlins must not be smaller than the rafters they support. The max. span for 2 X 4/ 2 X 6 roof purlins is 4" X 6". For purlin ports provide struts, not smaller than 2 X 4 with an unbraced length not over 8' and not flatter than 45 degrees to the horizontal to bearing wall or partitions. OUBC ~..5.~8-g75 21. All weather exposed plywood shall be EXTERIOR type and at least C-C grade. Attention: Roof overhands. S, 251~. ~2, Provide screened attic vents with a net free area of 1/150 of the attic area (or 1/300 if half is along eaves and the balance at least 3' hi~her). S. 3205~c 23. Roof sha'll be sloped for drainage. Val- leys shall be supported (flat valleys prohib- ited.) Shingles (any kind) shall not be in- stalled on a slope of less than 4" in 12". Com- positions shingles require a 15 pound asphalt /~ base sheet. Chapter 32, '24.] ProWde'~'in. on~ hou6'"'fire separation beC ..... --t~n garage and house. Separation shall ex- tend to roof line or across ceiling and re- maining bearing walls, Use min. I 3/8" solid core door. OUBC Table 5~b 25. Enclosed usable space under stairs shall be provided with one hour protection on the I~losed side. S. 3305-1: 2¢,) Elements of appliAnc=s which create a Ix~J~w, spark or flame shall be located a min. ~_~8" a~ove 9~rage floor. OUMC 508 ' ~7~. Clothes dryer located in an area that is ~alSitable or containing other fuel burning ap- pliances shall be exhausted to the outside. OUMC 1903 ~ 28. Clothes dryer moisture exhaust duct is limited to 14' with two elbows from the dryer to its point of termination, Reduce this th 2' for ever~ elbow in excess of two. Vent kitchen fa~ to outside via"~et'a~ · ~0.~ IYfbAthrooms, wa~er Closet compart~Cts, ~undry rooms and similar rooms, a mechanical ventilation system connected directly to the outside, capable of five air changes per hour shall be provided where there are no openable windows. OUBC 1405-a 31. Provide all habitable rooms with outside windows with net areas of not less than 1/10 of floor areas nor 10 sq. ft. Every sleeping room shall have an exterior door or not less