STRUCTURAL AND ORNAMENTAL IRON AND STEEL 



DESCRIPTION 

 OF BUILDING 



steel plant, complete rolling mills and ;i vrell-equipped 

 bridge shop. 



The Singer JJnilding Addition is of the modern 

 type of fireproof steel frame eonstrnetion. The 

 main part of the building extends up to the 1 4th 

 tier; above this jM)int the To\\er. 

 (." feet square, extends up in an 

 almost unbroken line to the 40th 

 tier; from this height springs a scginental dome 

 curving inwardly to the 4.">d tier, where it is finished 

 with a flat deck; from the deck of the dome the 

 Tower narrows to 12 feet square, its columns continu 

 ing up to the 40th tier; from the 4(ith tier a lantern. 

 9 feet in diameter at the base, extends above the 

 48th tier, making a total height from the curb of 

 612 feet. 



On the front of the building there is a two story 

 curved mansard roof, beginning at the 14th tier and 

 curving inwardly to the Tower at the 17th tier. 



At the .SOth and 37th tiers the floor extends out- 

 side the Tower 8 feet on each side and i> curved 

 to a radius of 37 feet, struck from the center of tin- 

 Tower; the overhang is supported by cantilever 

 beams extending back into the Tower. 



In the basement there are .)4 columns; the heaviest 

 carry a maximum combined load of about 1,000 tons, 

 with an area of cross section of about 188 square 

 inches and weighing approximately 800 pounds per 



1\ September, 1906, the contract for furnishing 

 and erecting the structural steel was awarded 

 to MHUkrii lirollu-nt, Inc., office at No. 11 

 Broadway. 



Competition for the contract was very keen, as 

 all of the large structural >(<<! companies coveted the 

 honor of furnishing and erecting the steel work for 

 the greatest skyscraper in the world. 



It was found after careful comparison that Milli- 

 kcii llrotlu-r*. I in-., were better fitted to -handle this 

 great engineering proposition than any of their com- 

 petitors, bei-aii.se of the convenient location of their 

 immense works at Milliken, Staten Island, X. Y., on 

 tidewater. These works comprise a large modern 



[20] 



SKTTINCi AN OITSIDK TOWK.U MK\M 



