422 



STRUCTURAL DRAFTING. 



CHAP. XII. 



Stresses. The stresses in all members of transverse bents, trusses and latticed and plate 

 girders, and the loads on all main building columns shall be given on the design drawings. Give 

 maximum bending moment and maximum shear in all crane girders, plate girders, and floor girders 

 and columns. Maximum shear and bending moment shall be given for all stringers or I-Beams 

 used as floor or crane girders. 



Notes. Material (whether O. H. (open-hearth) or Bessemer, soft, medium or structural 

 steel); specifications (name and date; size of rivets and holes, reamed or punched full size). 



Angle Members. In all cases where two unequal legged angles are used as main members, 

 show the direction in which the outstanding legs are turned by giving the dimension of the leg 

 appearing in elevation, or by exaggerating the longer leg. 



TABLE VII. 

 MAXIMUM SIZES OF SHEARED PLATES; ILLINOIS STEEL Co. 



Sections. Give sections of all members used in the structure. Whenever two or more 

 columns or other members in different locations have the same section, either note it, or mark the 

 section on each one. For a column of special make-up show a cross section. 



Dimensions. The following dimensions should be given: (i) Height of lower chord of 

 trusses from floor level; (2) elevation of top of crane rail with clearance; (3) distance c. to c. of 

 crane rail with clearance; (4) distance b. to b. of angles of all main columns; (5) pitch of trusses 

 or height of same at heel and slope of upper chord; (6) width and height of ventilator; (7) length 

 of bays; (8) distance c. to c. of building columns; (9) location and size of stacks ; (10) location and 

 size of openings and circular ventilators; (n) thickness of all walls, and relation to center line 

 of columns. 



Windows. Give size and number of lights and height of windows. Show location of all 

 windows. State whether pivoted, sliding, counter-balanced or fixed, and whether continuous. 

 State kind of glass. 



Doors. Give dimensions (width by height) and state whether wood or steel, swinging, 

 lifting, rolling or sliding. State style of track, hangers and latch. 



