1. Structural Steel
Prof Awad S. Hanna

2. Type of Steel
Designated by the letter “A” followed by the American Society for Testing and Materials (ASTM) designation number.
The principal types of structural steel include:
A36 carbon structural steel
A572 high-strength low-alloy structural steel
A588 corrosion-resistant high-strength low-alloy structural steel.
Prof Awad S. Hanna

3. Table 1, Rolled-steel shape designations1”
Weight: 40.8 lb/sq. ft/ in 1’ 1’
Prof Awad S. Hanna

4. Steel Sections: Channel C 8x11
C = channel
8 = nominal depth
weight = 11.5 #/Lf
Use:
beams and built-up members
Prof Awad S. Hanna

5. Steel Sections: Angle L 5 x 3 x 5/8
L = angle
5 = length of one leg
3 = length of another leg
5/8 = nominal thickness
need to look up #
Bracing and build-up members
Prof Awad S. Hanna

6. Structural WT 7 x 49.5 ST 9 x 35 WT = cut from wide flange (14 x 90)
7 = nominal depth
49.5 = #/lf
ST = cut form S beam (18 x 70)
Use:
Build-up sections
Prof Awad S. Hanna

7. Wide Flange W14 x 90 14 WF 90 Standard Beam S18 x 70 18 I 70
W = wide flange
14 = nominal depth
90 = #/lf
use: beam and column
Wide Flange W14 x WF 90
S = standard
18 = nominal depth
70 = #/lf
use: beam, not column
Standard Beam S18 x I 70
Prof Awad S. Hanna

8. Estimating Tips Nominally taken off and priced by weight
Group for take off by:
Grade of steel
Type of section or member
Method of tied connection
location
Maintain consistent sequence of take off. Common:
Columns and detail
Beams and detail (floor by floor)
Bracing and flooring
Prof Awad S. Hanna

9. Pricing Depends on where material is purchased.
Mill price apply to large orders.
Warehouse price apply to small orders from local supplier.
Prices are as of time of delivery. Need escalation clauses to be clearly set forth.
Price is made up a base plus extras.
Prof Awad S. Hanna

10. Pricing Structural Shapes
Prices are expressed in cents per pound.
W14x ft, A36 steel (3104.6#)
Base
Dimension: shape
length-quantity
Pack
Mark
Load
18.65
Prof Awad S. Hanna

11. Example Drawing for Structural Steel Take-Off
All Columns
this Row
W24 x 68
W14x 43
W14x 68
W14x 68
W14x 43
28’0”
W14 x 43
W14 x 84
W14 x 103
W14 x 84
W14 x 43
All Columns
this Row
W24 x 100
W18 x 40
W18 x 70
W18 x 70
W18 x 40
14’0”
W14 x 43”
W14 x 84
W14 x 84
W14 x 43
All Columns
this Row
W24 x 100
NOTE:
All columns are 12’0” in length
W18 x 50
W18 x 50
14’0”
W14 x 43
W14 x 84
W14 x 84
W14 x 43
All Columns
this Row
W24 x 100
W18 x 40
W18 x 70
W18 x 70
W18 x 40
W14 x 84 N
28’0”
W14 x 43
W14 x 103
W14 x 84
W14 x 43
All Columns
this Row
W24 x 68
W14x 43
W14x 68
W14x 68
W14x 43
20’0”
30’0”
Prof Awad S. Hanna
30’0”
20’0”

12. Table 2, List of Steel Quantities
The cost of plates and connectors (bolts or welding) are not included.
Prof Awad S. Hanna