O-1954-476 - Laserfiche WebLink

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....----.... --- - "',.-." . ' ...-..... 'f , ......... ,I) . -31- (c) LATERAL StPPO~. Solid masonry walls shall be supported at right angles to the wall face at intervals not exceeding 20 times the nominal wall thiclmess if laid in Type A, B, or C mortar" and not exceeding 12 times the nominal wall thiclaless if laid in Type D mortar. Such lateral support shall conform to subsection 10 of this section. (d) Bond. Tm facing and gacking of solid masonry bearing walls shall be bonded so that not le.3s than 4 percent of the wall surface is _composed of full Je ngth headers. Thel distance between adjacent full length headers shall not exceed 24 inches either vertically or horizontally. In solid brick walls more than 12 inches thick the inner joints of header courses shall be covered vdth another header COUI'fle which shall break joints with the course belOW'. The facing and baCking of solid mas onry walls shall be bonded as required above for bearing walls or shall be bonded with corrosionresistant metal ties spaced not .t'.arther apart than Ie inches vertically and 24 inches horizonta:I.J.y. (e) Other requirements. (1) Under-burnei clay bricks shall not be us ed in any part of a building or structure whe:~e exposed to the weather J nor in isolated piers, . nor in such part. of a bea::-ing 1"Tall above which the wall extends more than 40 feet. (2) Clay or sha:~e brick laid in Type A. or Type B mortar shall be lret immediately before be:.ng leid, except that very hard ar vitrified brick need not be wetted. (3) Horizontal ~lIld vertical joints in brick masonry shall be filled wi th mortar. (4) Except in dwrellings interior bearing walls that are less than 12 inches in thiclmess and. support wooden floor or roof joists, shall be corbeled not less than 3 inches to receive such joists, unless approved metal joist hangers are used. 4. STem trAILS. (a) Thiclmess. (1) The minimum. 'thiclmess of walls of stone ashlar shall be not less than that required for s oUd masonry walls in S1 bsection 3 of this section. (2,) Rubble stone walls shall be 4 indhea thicker than is' required for solid masonry walls in subuection 3 of this seotion, but shall. not be less than 16 inches thick" and shall nal:i exceed 40 feet in height.