O-1954-476 - Laserfiche WebLink

Browse Search

, .._-.... ~- :sr. e. -29- e 'lihat timber members usedf or decorative purposes may be set against the masonry, '. or may be set into the masonry wtlBre the wall exceeds 8 inches in thickness. (i) Dut-ing erection, walls shall be adequately braced and arches temporarily supported. t Hyd rated Lime or Cement Lime Putty A. 1 (Portland) atoi B 1 (Portland) a to 1i B 1 (Mas onry Type 11*) a a 1 (p cftland) 2 to 2t a 1 (Masonry Type 1*) a D a to l (Port- land) 1 to l~ I' ';:;0<,' , ",t '=' 2. Mm TA.:.'1. (a) Mortar used in masonry construction shall be proportioned in accordance with the following table: MORTAR PROPORTIONS Proportions by Volume Mortar Type Aggregate, measured in a damp and loose condition Not over 3 parts Not over 6 parts Not over 3 parts Not over 9 parts Not over 3 parts Not over 3 parts * As de1'ined in Federal Specification 55-0-181 b, Masonry cement. (b) Type of mortar required. Masonry shall be laid in Type A, Type B or Type a mortar" except as follows: Type A, mortar shall be used in foundation walls of hollow masonry units" and in nominal la-inch cavity walls. Type A or T,ype B mortar shall be used in footings, foundation walls or solid masonry units, isolated piers, load bearing or exterior walls of 'hollow masonry units, hollow walls and cavity walls exceeding 1Q-inch nominal thickness. Type D mortar may be used in solid masonry walls" other than parapet vralls or rubble walls, not in contact with the soil and not ~ss than 12 inches thick nor more than 35 feet in height, provided the walls are laterally supported at intervaJs not exceeding 12 times the wall thickness. Gypsum partition tile and block shall be laid in gypsum mortar. Non- bearing partitions and fireproofing of structural clay tile may be laid in gypsum mortar. Fire brick shall be laid in fire cla;r mortar.