One 4-inch lead bend 1.50 One 4-inch brass ferrule .35 10 ft. 2-inch lead waste pipe 2.50 14 ft. 1½-inch lead pipe 2.50 Twelve 2-inch brass ferrules 1.50 Two 2-inch lead traps 2.50 2 sq. ft. 6-pound sheet lead .90 Three 4-inch wire-basket strainers .40 20 lb. of wiping solder 5.00 ------- Total $185.15 LABOR Labor, assumed to be one-fourth cost of all materials = $584.15 × .25 = $146.04 _Summary_ Fixtures $315.00 Water-supply system 84.00 Drainage 185.15 Labor 146.04 ------- Total cost of plumbing $730.19 GAS-FITTING =12.= Following is given the cost of buying and installing the various gas fixtures and pipes that are used in the building under consideration: FIXTURES _Quantities and Cost_