26 CONSOLIDATED STEEL CORPORATION 



DIMENSIONS AND PROPERTIES OF 

 BETHLEHEM I-BEAMS AND GIRDER BEAMS 



Weights and dimensions of all the sizes of Bethlehem I-Beams usually 

 rolled are given in the tables on pages 29 and 11. Sufficient variations of 

 weights are provided in general for all ordinary purposes of construction. 

 Intermediate or heavier weights may be furnished by special arrangement, 

 but only in variations corresponding to the regular weights of Standard Beams. 



Properties of Bethlehem I-Beams are given in the tables on pages 32-33 and 

 44-45. The minimum weight of each section, from 8 inches to 24 inches in depth, 

 inclusive, has a coefficient of strength or section modulus equal to that of the 

 corresponding minimum weight Standard Beam of the same depth, as will be 

 seen by reference to the tables of comparison on page 37 and 49. Because of 

 their scientifically proportioned profile, the Bethlehem Beams in general 

 weigh 10 per cent less than corresponding Standard Beams of equal strength. 



Weights and dimensions of the minimum sections of Bethlehem Girder 

 Beams are given in the tables on pages 28 and 40. Heavier weights may be 

 furnished by special arrangement, but only in increments corresponding 

 to the regular weights of Standard Beams. 



Properties of Bethlehem Girder Beams are given in the tables on pages 

 30-31 and 42-43. From 8 inches to 24 inches in depth, inclusive, these Girder 

 Beams have a coefficient of strength or section modulus equal to that of two 

 corresponding minimum weight Standard Beams of the same depth, as will be 

 seen by reference to the tables of comparison on pages 36 and 48. The weight 

 of the Girder Beam is in general 12 ^ per cent less than the combined weight 

 of the two corresponding Standard Beams, not including the separators for as- 

 sembling the latter into a girder of equal strength. 



The increase in thickness of web and in width of flanges is given for one 

 pound increase in weight of the beam or girder section, by means of which the 

 dimensions of intermediate or heavier weights can be determined. 



Coefficients of strength are given for maximum fiber stresses of 16,000 

 pounds and 12,500 pounds per square inch and for 1200 kilograms and 1000 

 kilograms per square centimeter. If the loads are quiescent or nearly so, as in 

 buildings, the coefficients for 16,000 pounds or 1200 kilograms are generally 

 used, but when moving loads are to be supported coefficients for smaller fiber 

 stresses should be used. 



