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i , <br /> ti <br /> TABLE IV <br /> Maximum clear spans of rafters for wood or asphalt shingle <br /> i roofs: <br /> I <br /> Para. 1. Clear span shall mean the -distance measured <br /> horizontally from the inside of the plate to a point -directly <br /> i h beneath the ridge; the actual rafter length will depend on <br /> the roof slope and must be determined accordingly. <br /> ljPara. 2. This table is for roofs with a minimum pitch of <br /> I <br /> 5" to 12"; for the roofs with less pitch, the rafters shall be <br /> figured as floor joists. Spacing center to center 20". <br /> 5} 11 <br /> Size in inches feet inches <br /> 2x4 <br /> 2x6 7 3 <br /> 11 4 <br /> 2x8 16 7 <br /> Spacing center to center 24". <br /> Size in inches i feet inches <br /> 2 x 4 <br /> 6 g <br /> 2 x 6 10 3 <br /> 's 2x8 13 8 <br /> Tables I, II; III, IV are based on a minimum fiber stress <br /> of 1200 lbs. <br /> r! III. FIRE PREVENTION REGULATIONS <br /> Section 1. Chimneys. <br /> � If <br /> t Para. L All chimneys hereafter built in any building <br /> used for habitation, business, or for <br /> public assembly, shall <br /> be built of brick or other incombustible material, constructed <br /> from the ground up and not supported <br /> by wood or combustible material or hung in any way <br /> Para. 2. All chimneys shall have a terra-cotta flue lin- <br /> ing unless -the chimney walls are 8 inches thick or more and <br /> shall be carried up to at least one foot above the highest <br /> i point of the roof. <br /> I. <br /> t Para. 3. No smoke pipe or metal flue shall pass through <br /> any wooden partition without a safety thimble of fireproof <br /> material, the thickness of the partition. <br /> i !! The Board of Selectmen, annually in March, shall ap- <br /> point an Inspector of Gas Piping and Gas Appliances under <br /> ' the provisions of (Chapter 737, Section 2, Acts of 1960 and <br /> Section 3-0, Chapter 143, General Laws, to hold office from <br /> the first day of April following and until his successor is <br /> appointed and qualified. <br /> 29, . <br /> r <br />