Proceedings [Of] Annual Meetings of the American Society of Sanitary Engineering

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: ... Section 64. (Sheet Lead.) Sheet lead for roof flashing shall not weigh less than four (4) pounds per square foot, and shall extend not less than six (6) inches from the pipe and the joint shall be made water tight. Section 65. (Copper.) Copper tubing when used for inside roof conductors or leader connections shall be seamless drawn tubing, not lighter than number fourteen (14) B. & S. gauge; and when copper is used for roof conductor or leader flashings it shall be not lighter than number eighteen (18) gauge, and for local vents and interior ventilating pipe, it may be spiral and not lighter than gauge number twenty-six (26). Section 66. (Galvanized Iron Sheet Metal.) Galvanized iron when used for local vent and interior ventilating pipe shall be air-tight spiral or plain pipe not lighter than the following B. & S. gauges: No. 26--for 2 in. to 12 in. pipe No. 24--for 13 in. to 20 in. pipe. No. 22--for 21 in. to 26 in. pipe. Section 67. (Calking Ferrules.) Brass calking ferrules shall be tapered or recessed, extra heavy and of best quality red cast brass, not less than one-eighth (%) of an inch thick in every part, free from sandholes and other defects, thoroughly tested before calking. Hub ferrules may be used when made of the same material and thickness as calking ferrules and not less than two (2) inches in depth. No brass calking ferrule of less length and corresponding weight than shown by the following table, shall be used: Inside Diameter Taper or Recess Least Length Weight, Each 2J4 inches '4J/2 inches 1 lb. 3Vt inches iA inches 1 lb. 12 oz. 4J4 inches 4 inches 2 lb. 8 oz. And where reducing and cup or similar ferrules are used, they shall conform to the above tables as to their weight and the top of the ferrule shall extend at...