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§ lssl.o5
<br />DWELLING HOUSE CODE
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<br />1551.05 Handrails,
<br />The open side of all landings and stairs of
<br />more than 3 risers shall be provided with
<br />handrails. Stairways which are enclosed on
<br />both sides shall be provided with handrails
<br />on at least one side.
<br />CHAPTER 53. GARAGES.
<br />1553.01 Attached or within 10 feet of
<br />dwelling.
<br />{a) Right to Attach. A garage, not ex-
<br />ceeding 600 square feet in area, may be at-
<br />tached to or form a part of a living unit if
<br />separated from said living unit by walls, par-
<br />titions and ceilings of materials to restrict the
<br />passage of gases, smoke and odor from the
<br />garage to other parts of the building,
<br />(b) Construction Requirements, T h e
<br />garage side of attached and built-in garages
<br />and those parts of walls, floors and ceilings
<br />within 10 feet of the dwelling on any garage
<br />shall:
<br />i. Be of material and construction at least
<br />equivalent in fire-resistance and gas-tight-
<br />ness to one-inch tongue-and-groove wooden
<br />boards, on garage side of supporting studs,
<br />free of knot holes, with gypsum wall boards
<br />not less than 3/s inch in thickness nailed
<br />through the wooden boards into the studs
<br />and rafters, using 8d nails, and with 4-inch
<br />strips of gypsum wall board similarly nailed
<br />over all butting joints of the gypsum wall
<br />board and with gypsum plaster filling at in-
<br />tersection of walls and of walls with ceilings
<br />and floors, or
<br />ii. Consist of metal lath and gypsum plas-
<br />ter or gypsum lath and plaster, or
<br />iii. Have afire-resistance rating of not less
<br />than 3/4 hour.
<br />(c) Requirements Where Connecting
<br />Door. Where there is a door opening be-
<br />tween the garage and the living unit, the
<br />garage floor shall pitch away from that door
<br />opening at a slope of not less than ~/4 inch per
<br />foot. Such opening shall be provided with a
<br />self-closing door of metal, metal covered,
<br />solid wood, or other approved tyke having a
<br />fire-resistance rating of not less than 3/4 hour.
<br />(d) Living Quarters Above. Where liv-
<br />ing quarters are located above the garage,
<br />such quarters and egress facilities shall be
<br />protected from the garage area by construc-
<br />tion having afire-resistance rating of not
<br />less than 3/4 hour.
<br />(e) Basement Garages. Basement garages
<br />shall be continuously ventilated by a me-
<br />chanical ventilating system with positive
<br />means for both the inlet and exhaust of at
<br />least 1 cubic foot of air per minute per
<br />square foot of floor area. Control of either
<br />the exhaust or inlet fan shall be close to the
<br />entrance door. The ventilating equipment
<br />may be combined with the heating system.
<br />1553.02 Detached garages.
<br />(a) Height. No detached garage shall be
<br />in excess of 15 feet in height to the peak of
<br />the gable.
<br />(b) Masonry Construction. Masonry de-
<br />tached garages shall have foundation and
<br />wall requirements the same as set forth for
<br />one-story dwellings in Section 1565.02.
<br />(c) Wood-Frame Construction. A one-
<br />storygarage, more than 10 feet from a dwell-
<br />ing, built of wood frame construction, shall
<br />comply with construction requirements for
<br />one-story dwellings with the following ex-
<br />ceptions:
<br />i, Bottom of footings of frame garages
<br />shall be not less than 18 inches below fin-
<br />ished grade, unless supported on a rein-
<br />forced concrete slab as provided in the fol-
<br />lowing paragraph:
<br />ii, Frame garages may be built on a con-
<br />crete slab, not less than 4-inch thick, rein-
<br />forced with steel mesh weighing not less
<br />than 40 pounds per 100 square feet or equiv-
<br />alent reinforcement turned up into a 6-inch
<br />width curb, 8 inches high above finished
<br />grade to form a wall foundation.
<br />iii. Studs shall have a spacing of not more
<br />than 24 inches o.c. Doubling of studs shall
<br />not be required on jambs of openings less
<br />than 3'-6" wide,
<br />iv. Sheathing and building paper may be
<br />omitted. .
<br />v: Corner posts may be two 2 x 4's or a 4
<br />x4.
<br />vi, Top plate maybe single, provided raft-
<br />ers are placed directly over studs, and plates
<br />at corners are lapped to provide ties.
<br />vii. Rafter ties at eaves may be 2 x 4's
<br />with a maximum spacing 6 feet o.c.
<br />viii. Corner bracing may be applied on
<br />the inside surface of studs.
<br />ix. Flooring may be slag, gravel, cinders,
<br />concrete or other material approved by the
<br />Building Official.
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<br />Exterior Wood. Frame Walls
<br />§ 1567.07
<br />to the Building Official to receive interior
<br />finish. When partitions intersect the exterior
<br />wall, combinations of three 2 x 4's .or a 2 x 4
<br />and a 2 x 6 shall be framed to receive the
<br />interior finish.
<br />1567.03 Wall sheathing-general.
<br />All exterior wood stud ,framed walls of
<br />dwellings which are not finished with back-
<br />plastered stucco extending back between the
<br />studs at least i/4 inch, or with other exterior
<br />finish which will provide adequate bracing
<br />and weather protection, shall have wall
<br />sheathing back of the exterior finish. Ex-
<br />terior wall sheathing shall consist of either
<br />wood boards, plywood, fiberboard, or gyp-
<br />sum board, conforming to the requirements
<br />set forth in this Chapter, or other material
<br />approved by the Building Official.
<br />1567.04 Wood wall sheathing.
<br />(a) Size and nailing. Wood sheathing
<br />shall be not less than 5/s inch in net thick-
<br />ness and shall be nailed with not less than
<br />two 8d common nails to each stud for boards
<br />up to 8 inches wide, and with not less than
<br />three 8d common nails for wider boards.
<br />(b) Joints. Joints shall be broken over
<br />studs unless end-matched boards are used.
<br />If end-matched boards are used, no two ad-
<br />joining boards shall break joints over the
<br />same stud space, and each board shall bear
<br />on not less than two studs.
<br />(c) Direction of application. When ap-
<br />plied diagonally, boards shall extend at ap-
<br />proximately 45° in opposite directions from
<br />each corner. When applied horizontally, the
<br />stud frame shall have diagonal corner brac-
<br />ing. Wood sheathing shall be applied hori-
<br />zontally under stucco finish.
<br />1567.05 Plywood wall sheathing.
<br />(a) Grade and nailing. Plywood for ex-
<br />terior sheathing shall be not less than
<br />"sheathing" grade, "interior type," conform-
<br />ing to the requirements for such material in-
<br />cluded in Commercial Standard CS45. Ply-
<br />wood shall be fastened with not less than 8d
<br />common nails, spaced 6" o.c. along edges
<br />and 12" o.c. on intermediate studs. To re-
<br />ceive the nails along the horizontal joints,
<br />2 x 4 nailing strips shall be set between the
<br />studs and nailed thereto.
<br />(b) Minimum thickness. The minimum
<br />thicknesses of plywood sheathing shall be not
<br />less than the following:
<br />Minimum Maximum
<br />Thickness
<br />5/16 inch Stud Spacing
<br />16 inches
<br />3/s inch 24 inches
<br />(c) Exterior finish. Wood shingles applied
<br />over plywood sheathing less than 5/s inch
<br />thick shall be fastened by means of barbed
<br />nails or nailed to wood or other approved
<br />nailing strips. Cement-asbestos shingles and
<br />siding shall be fastened with barbed nails.
<br />1567.06 Fiberboard wall sheathing.
<br />(a) Grade. Fiberboard sheathing shall
<br />conform to the requirements of Federal
<br />Specifications LLL-F-321b, Fiberboard, Ire
<br />sulating,
<br />(b) Thickness. Thicknesses shall be not
<br />less than the following:
<br />Minimum Maximum
<br />Thickness Stud Spacing
<br />~/a inch 16 inches
<br />3/4 inch 24 inches
<br />('c) Fastening. Each fiberboard sheath-
<br />ing board shall bear on at least four studs,
<br />unless otherwise approved by the Building
<br />Official. Fiberboard sheathing shall be
<br />erected with vertical joints staggered and
<br />shall be fastened at each bearing with 8d
<br />common nails spaced not more than 3 inches
<br />apart at all exterior edges and not more than
<br />6 inches apart at intermediate bearings or
<br />by means of other approved fasteners. To
<br />receive the nails at the horizontal joints,
<br />2 x 4 nailing strips shall be set between the
<br />studs and nailed to them,
<br />(d) Exterior finish. Exterior finish shall
<br />be nailed either to the studding through the
<br />fiberboard, or shall be attached to wood or
<br />other approved backing or nailing strips, ex-
<br />cept that wood, asphalt or cement-asbestos
<br />shingles may be secured directly to_ the
<br />fiberboard sheathing with approved fas-
<br />teners.
<br />1567.07 Gypsum board wall sheathing.
<br />(a) Type and size. Gypsum sheathing
<br />boards shall have a water repellent treat-
<br />ment adequate to prevent moisture or water
<br />from entering into the gypsum. core, shall
<br />have a minimum thickness of 1/z inch and a
<br />minimum width of 2 feet, and shall be used
<br />over studding spaced not more than 16 inches
<br />on centers.
<br />(b) Fastening. Gypsum sheathing shall
<br />be fastened at each bearing with galvanized
<br />barbed roofing nails not less than 13/4 inches
<br />long, 11 gage, 7/16 . inch diameter head,
<br />spaced not more than 4 inches on centers or
<br />by means of other approved fastenings, ex-
<br />cept that where supplemental fastenings are
<br />provided by the nailing of wood siding or
<br />of wood nailing strips, nails for fastening
<br />sheathing may be spaced up to 8 inches on
<br />centers.
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