404 



STRUCTURAL DRAFTING. 



CHAP. XII. 



unless requested; for example, 2d Floor, No. 5. What is said under columns about marking system 

 for standard pieces applies to girders as well. When a girder is unsymmetrical about the center 

 line, and a question may arise how to erect it, one end shall be marked with the number of the 

 column to which it connects, or with North, South, East or West. Girders must not be bunched 



t- 



O; 



"S-i 



t 



Poof 



!7 tf} -F/oor 



16 th -Floor 



I5 th -Floor 



I4 th -Floor 



H5 



115 



- 



82 



83 



II5 



* 



NOTE '--Figures in 



FIG. 13. COLUMN SCHEDULE FOR OFFICE BUILDINGS. 



together for the different floors more than to meet the requirements in the field; but they must 

 correspond to the tiers of columns as they will be erected. 



Beams. Beams shall be drawn on the standard forms provided for the purpose. They 

 need not be drawn to scale, see Fig. 16 and Fig. 17. Beams shall be marked the same as girders 

 with the number of the floor; One 12" I @ 40 Ib. X i9'-3l", (Mark) 2d Floor No. 35. What 

 is said under girders about marking one end, when not symmetrical around the center line, and 

 about not bunching the different floors more than to meet the requirements in the field, applies 

 to beams as well. 



Whenever possible use standard framing angles, Tables 117 and 118, Part II. If it is deemed 

 necessary to use 6 in. X 6 in. angles, punch both legs the same as the 6 in. leg of standard; in 3! in. X 

 3f in. or 4 in. X 3! in. angles, punch both legs the same as 4 in. leg of standard. It is not abso- 



