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ORDINANCE NO. NS- 1673 <br />PAGE EIGHT <br /> <br />MATERIALS <br /> <br /> TABLE E <br /> VALUES FOR EXISTING MATERIALS <br /> <br />(2) ALLOWABLE VALUES <br /> <br />(1) HORIZONTAL DIAPHRAGMS <br /> <br />(3) <br /> <br />(a) Roofs with straight <br />sheathing and roofing <br />applied directly to <br />the sheathing <br /> <br />(b) Roof with diagonal <br />sheathing and roofing <br /> <br />100 lbs. per foot <br />for seismic shear <br /> <br />(c) Floors with straight <br />tongue and groove sheathing <br /> <br />400 lbs. per foot <br />for seismic shear <br /> <br />(d) Floors with straight <br />sheathing and finished <br />wood flooring <br /> <br />150 lbs. per foot <br />for seismic shear <br /> <br />(e) Floors with diagonal <br />sheathing and finished <br />wood flooring <br /> <br />300 lbs. per foot <br />for seismic shear <br /> <br />(f) Floors or roofs with <br />straight sheathing and <br />plaster applied t~]~he <br />joist or rafters '-- <br /> <br />450 lbs. per foot <br />for seismic shear <br /> <br />(2) SHEAR WALLS: <br /> <br />Add 50 lbs. per foot to <br />materials (1) (a) and <br />(1) (c) <br /> <br />(3) <br /> <br />(4) <br /> <br />(5) <br /> <br />(6) <br /> <br />(a) Wood stud walls with <br />lath and plaster <br /> <br />100 lbs. per foot each <br />side for seismic shear <br /> <br />PLAIN CONCRETE FOOTINGS <br /> <br />f' = 1500 psi unless <br />otherwise shown by tests <br /> <br />DOUGLAS FIR WOOD <br /> <br />Allowable stress same <br />as No. (1) (d)-(f) <br /> <br />REINFORCING STEEL <br /> <br />ft = 18,000 lbs. per <br />square inch maximum <br /> <br />STRUCTURAL STEEL <br /> <br />f. = 20,000 lbs. per <br />s~uare inch maximum <br /> <br /> <br />