12061 Jefferson Blvd., Culver City, CA 90230-6219
for the installation of tile lined
ROMAN BATH TUBS
THIS STANDARD SPECIFICATION FOR THE INSTALLATION OF TILE LINED ROMAN BATH TUBS IS THE RESULT OF EXTENSIVE STUDY AND RESEARCH BY THE:
Ceramic Tile Institute Associated Tile Contractors of Southern California, Inc. Tile Layers Local No. 18 of I.U.B.A.C., United States and Canada Tile Finishers Local No. 1 1 of T.M.T.S. & F.I.U., United States and Canada International Association of Plumbing and Mechanical Officials Technical and Job Problem Committee City of Los Angeles County of Los Angeles S. B. Barnes & Associates, Structural Engineers
Approved by INTERNATIONAL ASSOCIATION OF PLUMBING AND MECHANICAL OFFICIALS as UNIFORM PLUMBING CODE INSTALLATION STANDARD U. P C.-I.S.-2-65 REVISED 1977, 1982
(1) Note -two stages of construction are covered. The reinforced concrete shell and the wire reinforced tile lining over the waterproof membrane.
(2) Approved waterproofing membrane, mortar bed and finish construction shall conform to the general requirements of the Uniform Plumbing Code. Exception: In short sections where there is no foot traffic, finished floor may exceed 1/2" per foot slope.
(3) Each concrete shell shall be filled to its overflow rim with water and shall remain watertight for not less than twenty-four hours before inspection and before the finish surface is installed.
(4) The finish surface shall be ceramic tile installed with Portland cement mortar mixed to a proper consistency in the proportion of one part cement and four parts mortar sand by volume and having an approved waterproofing admixture' included. Ceramic tile joints shall be thoroughly grouted with approved waterproofing grout containing an admixture.
(5) The concave interior surfaces shall be such as to permit ready cleansing and all corners shall be rounded or at angles not in excess of 45°. Grout is not acceptable for rounding corners. See details for approved corners.
(6) Concealed overflow or built-in waste stopper may be used if designed and approved for this application.
(7) Reinforcement in center of concrete shell, use #3P @ 8" O.C. both ways.
(8) 2000 P.S.I. compressive strength concrete poured monolithically and having an approved waterproofing admixture included." Concrete to have not less than six sacks of Portland cement per batch.
(9) Reinforcing wire, as specified under materials in this standard or equal, shall be wired together in a self-supporting manner. Nails shall not be used through the waterproof membrane to fasten wire reinforcing.
(10) Shower wall in accordance with Section 909 of the Uniform Plumbing Code.
*Quantities of several approved waterproofing admixtures required per sack of cement:
Anti-Hydro -- 1 qt. per sack of cement