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FOUNDATION 1. ~otings shall bear on firm undisturbed soiF~ 2. Fills to be used to support footings shall be engineered (report required) or ,,/ll be concrete..S. 2903-a Foundation sections 12'¥15"/18" wide, 7"/8" thick and 12"/18"/24" depth below natural grade and finish grade are required. OUBC Table 29-a 4. Maximum slopes for unstabiliz~d cuts and fills are 2 horizontal to 1 vertical. ~i~2903-a Provide underfloor vents of 1½ sq. ft. per 25 lineal ft. of foundation wall. Openings to be in at least two walls and .~r th9 corners. O~C 2617..-.c-6~ Provide underfloor drainage if space is subject to potential storm or ground- water accumulation. S. 2910 7. P~ovide reinforcement for concrete w~lls over 4' in height, min. #4 bar spaced: horiz, c.c. vert. c.c. Bars shall be continuous with overlap of min. 10 diameters. One bar 4" from bottom (~sdone 4" from top of foundation wall. Extend ~" Sill'" bolts,'~in. 7" iht6 con- crete. Space max. 6' c.c. and within 12" of Provide min. 18" x 24" access to crawl 1(~]) A ridge board not less i! 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 2518-9 .... J ~. Ra(te~ ties spa'ced max. 4' c.c. are re- quired immediately above ceiling joists which are not parallel to the rafters. OUBC 2518~9-4 20. Roof purlins must not be smaller than the rafters they support. The max. span for 2 X 4/ 2 X 6 roof purlins ~s 4" X 6". For purlin sup- 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 b_f~!ring wall or partitions. OUBC 2518-g-5 (215) All weather exposed plywood shall be ...... ~TER~OR type and at least C~C grade. I Atte~..ion:. Roof overhangs. S. 2517-§ J~ree Provide screened attic vents with a net area of 1/150 of the attic area (or 1/300 if half is along eaves and the balance at least 3' higher). S. 3205-c 23. Roof shall ~e 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 felt base sheet. Chapter 32, 24. Provide min. one hour fire separation"be- tween garage and house. Separation shall ex- tend to roof line or across ceiling and re- space, located not over 20' from plumbing maining bearing walls. Use min. 1 3/8" solid cleanouts (OUPC 406-g) or furnace (OUMC j~,c~e door. OUBC Table g04-b). Pipes, ducts and other nonstructuralJ(~25~2 ~nclosed usabl~ 'space under sta'~rs shall construction shall not interfere with ac- J~b~e provided with one hour protection on the cessability to or within the crawl space. ~C 2571-c (~ Vapor barriers shall be installed on the ground in crawl spaces and on the warm a~oe of exterior walls. S, 5307 The"required clearan'~e for wood members ye grade is 6" for mudsills, 12" for g~izde?.s and 18" for j~ists. OUBC 2517-c ~ All posts to be mounted on approved supports. CONSTRUCT]ON.'REQUIRE~ENTS ~3. Cross bridge or solid block ~" floor joists over 12" in depth every 8' and solid block at supports. ~. Fire' block s'~walls and partitions (including furred spaces) at floor, ceiling, soffit and at mid height of walls oVer.lO' in he~dht and along 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'~'~all be engineer approved. enclosed side. S. 3305-1 26. Elements of appliances which create a glow, spark or flame shall be located a min. of 18" above garage floor. OUMC 508 . 27. Clothes dryer located in an area that is habitable or containing other fuel burning ap- pliances shall be exhausted to the outside. O~.,~C ~03 ~ Clo~hes dryer moisture exhaust duct is -Fimited to 14' w~th two elbows from the dryer to its point of termination. Reduce this l~th 2' for ever~ elbow in excess of two. ¢2~g~92 Vent kitchen fan to outside via 'metal ducts. 30. In bathrooms, water closet compartments, laundry 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 g4~nable windows. OUBC 1405-a 3t(~]5/ 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