Mechanical Contracting & Plumbing January-December 1909 . ill supply 1,400 to 2,000 sq. f I he length of mains are greater than 100 feet, increase them one size. Radiator Tappings. a. First lloor, up to 25 square ft . J to 60 square feet 5 in. b. Second floor, up to 30 square ft. J in. 30 to 100 square feet | in. Over 100 square feet 1 in. c. Third floor, up to 50 square feet i in. Over 60 square feet 1 in. 50 to 125 square feet i in. Over 125 square feet 1 in. Use one size larger tappings for rad-iators at the extreme end of mains. Description of Pipe Connections. Instead of taking
Mechanical Contracting & Plumbing January-December 1909 . ill supply 1,400 to 2,000 sq. f I he length of mains are greater than 100 feet, increase them one size. Radiator Tappings. a. First lloor, up to 25 square ft . J to 60 square feet 5 in. b. Second floor, up to 30 square ft. J in. 30 to 100 square feet | in. Over 100 square feet 1 in. c. Third floor, up to 50 square feet i in. Over 60 square feet 1 in. 50 to 125 square feet i in. Over 125 square feet 1 in. Use one size larger tappings for rad-iators at the extreme end of mains. Description of Pipe Connections. Instead of taking the branches off themains with 45-degree ells, as is the prac-tice with open tank systems, they aretaken off in the manner shown in(he hot (est water which always travels atHie (op t the main, will enter the firstradiator branch. The second, third and main all the way from the boiler. Whereall branches are (45 e-d) taken from thetop the mains must be one or two sizeslarger than necessary in order to in-sure proper distribution of the water to.
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