392 



STRUCTURAL DRAFTING. 



CHAP. XII. 



from the edge respectively, may also be used. For beam sheets, bills of material, etc., use letter 

 size sheets 85 X n in. 



Title. The title shall be arranged uniformly for each contract and shall be placed in the 

 lower right hand corner. The title shall contain the name of the job, the description of the 

 details on the sheet, the number of the sheet, spaces for approval and other information as shown 

 in Fig. 6. 



Scale. The scale of the lengths of the members or skeleton of the structure shall be J, or f , 

 or I in. to I ft., depending upon the available space and the complexity of the member or structure. 

 Shop details shall as a rule be made f or I in. to I ft. For small details I f and 3 in. to I ft. may 

 be used; while for large plate girders or f in. to I ft. may be used. 



Views Shown. Drawings shall be neatly and carefully made to scale. Members shall be 

 detailed in the position which they will occupy in the structure; horizontal members being shown 

 lengthwise, and vertical members crosswise on the sheet. Inclined members (and vertical members 



FIG. 3. TRUSS JOINT, SKETCH DETAILED. 



when necessary on account of space) may be shown lengthwise on the sheet, but then only with 

 the lower end on the left. Avoid notes as far as possible; where there is the least chance for 

 ambiguity, make another view. 



In truss and girder spans, draw the inside view of the far truss, left hand end, Fig. 7. The 

 piece thus shown will be the right hand, and need not be marked right. In cases where it is 

 necessary to show the left hand of a piece, mark "left-hand shown" alongside the shipping mark. 



Show all elevations, sections and views in their proper position, looking toward the member. 

 Place the top view directly above, and the bottom view directly below the elevation. The bottom 

 view should always consist of a horizontal section as seen from above. 



In sectional views, the web (or gusset plate) shall always be blackened; angles, fillers, etc., 

 may be blackened or cross-hatched, but only when necessary on account of clearness. In a plate 



