Prof Awad S. Hanna

 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

Table 1, Rolled-steel shape designations
Type fo shape
W shape
S shape
M shape
American St andard Channel
Miscellaneous Channel
HP (bearing pile) shape
Equal leg angle
Unequal leg angle
Plat e
Example designat ion
W27 x 114
S20 x 95
M8 x 25
C12 x 30
MC 12 x 50
HP 14 x 8 9
L 6 x 6 x 1/2
L 8 x 4 x 1/2
PL 1/2 x 12
1”
Weight: 40.8 lb/sq. ft/ in
1’
1’
Prof Awad S. Hanna

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

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

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

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

 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

 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

 Prices are expressed in cents per pound.
 W14x95 - 32.68 ft, A36 steel (3104.6#)
 Base
 Dimension: shape
17.00
0.45
 Pack
 Mark
 Load length-quantity 1.00
0.00
0.00
0.20
18.65
Prof Awad S. Hanna

W14x 43
Example Drawing for Structural Steel Take-Off
W14x 68 W14x 68 W14x 43
All Columns this Row
W24 x 68
W18 x 40
W18 x 50
W18 x 40
W18 x 70 W18 x 70
NOTE:
All columns are 12’0” in length
W18 x 70 W18 x 70
W14x 43
20’0”
W14x 68
30’0”
W14x 68
W18 x 40
W18 x 50
W18 x 40
W14x 43
20’0”
All Columns this Row
W24 x 100
All Columns this Row
W24 x 100
All Columns this Row
W24 x 100
N
All Columns this Row
W24 x 68

Table 2, List of Steel Quantities
Sect ion Number Lengt h (ft ) Tot al Lengt h Wt ./ft Tot al Wt . (lb)
W 14 x 43 4 20.0
8 0 43 3440
W 14 x 68
W 18 x 40
4
4
30.0
20.0
120
8 0
6 8
40
8160
3200
W 18 x 70
W 18 x 50
W 14 x 43
4
2
4
30.0
20.0
28.0
120
40
112
70
50
43
8400
2000
4816
W 14 x 43
W 18 x 84
W 18 x 84
W 14 x 103
W 24 x 68
W 24 x 100
4
4
4
2
10
14
14.0
28.0
14.0
28.0
12.0
12.0
56
112
56
56
120
168
43
8 4
8 4
103
6 8
100
2408
9408
4704
5768
8160
16800
 The cost of plates and connectors (bolts or welding) are not included.
Prof Awad S. Hanna