426 ESTIMATES OF STRUCTURAL STEEL. CHAP. XIII. 



Columns. Column angles, web plate, base plate and angles, crane seat and cap. Base in- 

 cludes anchor bolts. 



Crane Girders. Flange angles, web plate, cover plates, end stiffeners, intermediate stiffeners, 

 fillers, knee braces and knee brace connections. Rails, splice bars, clips and crane stops. 



Miscellaneous. Eave struts, lattice girders, purlins, girts, ridge struts, lower chord struts, 

 column struts, rafter bracing, lower chord diagonals, reinforcing angles for purlins used as rafter 

 struts, and sag rods. 



Miscellaneous Materials Not Structural Steel. Corrugated steel roofing and siding, louvres, 

 flashing and ridge roll, gutters, conductors, downspouts, ventilators, stack collars. Windows, 

 doors, skylights, operating device, lumber, roofing, brick and concrete. 



2. OFFICE BUILDINGS. Floorbeams, girders, including all their connections not riveted 

 to other members. Floors should be estimated separately using a multiplier if two or more are 

 exactly alike. 



Columns. Columns including splices and connections riveted to the columns. If columns 

 are of Bethlehem "H" sections, it should be so noted on the estimate summary. Estimate columns 

 in tiers. 



Miscellaneous, such as suspended ceilings, galleries, penthouses, lintels, curb-angles, canopies, 

 etc. 



3. TRUSS BRIDGES. Truss members should be taken off separately in order that the 

 estimate will show at a glance the weight of any main member. Never write off material for 

 the trusses thus, "5 Truss 4 Req'd." 



n Stringers; floorbeams; pprtals; sway trusses; upper laterals; lower laterals: shoes, masonry 

 plates, anchor bolts, etc. 



A convenient order can easily be arranged for other structures. 



INSTRUCTIONS FOR TAKING OFF MATERIAL. Quantity estimates shall give the 

 shipping weights, not shipping weights plus scrap. Pin plates, gusset plates, etc., shall be taken 

 off as equivalent rectangular plates. Large irregular plates or small irregular plates which occur 

 in larger numbers shall have the exact sizes shown in the estimate and should have their weights 

 accurately calculated. All quantity estimates shall be made out with black drawing ink. 



The following colored pencils shall be used in estimating: 



Black. lr\ taking off quantities, all check marks on drawings or blue prints shall be made 

 with a black pencil. 



Red. In checking "quantities taken off" all check marks on drawings, blue prints and 

 data sheets shall be made with a red pencil. 



Blue. Blue pencils shall be used for checking extensions, also for making notes, corrections, 

 alterations or additions on white prints or tracings. 



Yellow. All alterations, corrections or additions, on blue prints at the time of estimating 

 shall be made with a yellow pencil. 



All notes on blue prints or drawings in regard to alterations, corrections or additions shall be 

 dated and signed by the person in charge of the estimate. In general all work shall be taken off 

 in feet and inches. Lengths of bolts shall be given in feet and inches. 



CLASSIFICATION OF MATERIAL. In making the summary steel and iron should be 

 classified as follows: 



Bars, including plates 6 in. wide and under, rounds up to 3 in. in diameter and squares up 

 to 3 in. on a side. 



Plates (a) Flats over 6 in. wide up to and including 100 in., and ? in. thick and over. 

 (6) Flats over 100 in. wide up to and including no in. 



(c) Flats over no in. wide up to and including 115 in. 



(d) Flats over 115 in. wide up to and including 120 in. 



(e) Flats over 120 in. 

 (/) Plates & in. thick, 

 (g) Plates | in. thick. 



