CON 4003, CVE 4073, CVE 5073 Construction Estimating Prof R. V. Locurcio, PE

 Today… Prof Locurcio – CH 6 – Metals  Thursday… HW#4 – Frank Schornagle  Thursday… India Presentation

 Steel structures  Fabrication  Types of Steel  Shapes  Units of Measurement  Estimating  Connections  Problems

 Fabricated at steel fabrication shop  Assembled and erected on site  Sometimes design of the connections is left up to fabricator

 Fabricator submits shop drawings to the structural engineer  Usual charge +15% over price of raw steel  Add transportation cost from fabricator to site  Engineer then will check to make sure the connections are adequate  Will either approve or make changes to the drawings

 A36 carbon steel (most common)  A440 high strength steel  A441 high strength, low alloy steel  A529 carbon steel  A588 corrosion-resistant, high strength, low alloy  Etc…

WF Beam AS Beam AS Channel Structural Tee WF Beam AS Beam AS Channel Structural Tee Angle Structural Tubing PipePlate Angle Structural Tubing PipePlate

 W18 x 55 Grade 50  W is the shape of the beam  18 is the depth in inches  55 is the number of pounds per foot of length  50 is 50,000 psi

 Estimate total linear feet  List each beam by shape  Size and weight  Each shape beam has a different weight  Structural-Steel handbook  RS Means  Buyer pays for ACTUAL weight  Plus fabrication costs  Plus transportation costs

structural steel members weight of each…. When estimating beams, girders, and columns, it is important to estimate not only the number of structural steel members needed but also the weight of each…. Because steel is priced by weight… usually Tons

Welded or bolted Add cost Fabrication $$$ Labor $$$ Quality is key

 One C12x30 (10ft)  Four W12x45 (28.5ft)  Six W12x45 ( ft)  Two W18x86 (39.33 ft)  One W18x175 ( ft)  Four 15 ft C1 columns (40lb per ft)  Two 15 ft C2 columns (53 lb per ft)

Price from RS Means = 15.51T x $2250/T = $34, mat. + 50%= $17, x $273/T = $ lab. + 25%= $ x $251/T = $ equip. Total = $61,532.06

Steel shapes Fabrication Shop drawings Connections Sold by weight Transportation Equipment Labor on site Safety

Frank Schornagle pls see me after class