STANDARD SPECIFICATIONS FOR STRUC- 

 TURAL STEEL TIMBER CONCRETE AND 

 REINFORCED CONCRETE 



PART I 



STEEL FRAMEWORK OF BUILDINGS 



DEAD, SNOW, AND WIND LOADS 



1. The Dead Load upon any part of a structure shall con- 

 sist of the calculated weight of the materials and fixtures carried 

 permanently by such part. 



2. The actual weight of the different materials shall be 

 computed as accurately as possible and, if necessary, a trial 

 design shall be made to ascertain the weight of any portion in 

 doubt. 



3. Roof Covering. The weight of roof covering will average, 

 for each square foot of superficial roof area, as follows: 



Corrugated steel 2-3 Ibs. 



Shingles 4-6 " 



Roofing tiles 6-8 " 



Slate (J to i" thick) 6-8 " 



Gravel and composition 8-10 " 



Terra-cotta, 2" thick (flat arch) 10-15 " 



Concrete, per inch thickness (flat arch). . 10-12 " 



Plank sheathing, per inch thickness 3-4 " 



