Construction Estimating & Bidding
Attached is a drawing for a small commercial office building. Your assignment is to prepare a cost estimate for the metal components of the building. You are to takeoff all beams and joists. Add 10% to your total for connections.
The two main items are I-beams and open web steel joists (metal joists, bar joists). Both are taken off in terms of tons. For the I-beams use the following unit costs:
Code Item Unit Material Labor Equipment
051223.770700 Structural Steel I-Beam ton $2,050.00 $315.00 $161.00
For the bar joists, you will need to first determine what type of joists are specified and then use a manufacturer’s guide to determine the pounds per foot for each type. Use the following unit cost for the specified joists:
Code Item Unit Material Labor Equipment
052119.100440 Bar Joists ton $1,400.00 $192.00 $105.00
Also, assume the roof is manufactured pre-painted standing seam roof. The unit cost is:
Code Item Unit Material Labor Equipment
053123.503100 Roof Deck sf $2.28 $0.32 $0.03
Be sure to show your work by using the Structural Steel Materials List on the second page (or re-creating a similar table in excel, etc.)
Your final answers should be provide in the quantity takeoff sheet on page 3 (or re-creating a similar QTO table in excel)
