1. Kandahar University
Engineering Faculty
Steel Structure assignment(2)
Group-3
10/15/2012 Prepared by 3rd Group 1

2. Third Group Membership
Name F/Name Att/NO
Shir ahmad Yar-Mohamad 7
Mohammad Dawod Zari gul 9
Nasratullah Zainullah 48
Mohammad Qasim Mohammad Noor 23
Ab-ahad Mohammad Anwar 45
Abdurahman Habibullah 15
10/15/2012 Prepared by 3rd Group 2

3. General Purpose
INTRODUCTION TO
(ASTM A36)
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4. ASTM A36
Outline
 Scope
 Appurtenant Materials
 General Requirements for Delivery
 Materials and Manufacture
 Tension Test
10/15/2012 Prepared by 3rd Group 4

5. ASTM A36.cont…….
 Scope
 1:- This specification covers carbon steel shapes, plates,
and bars of structural quality for use in riveted, bolted,
or welded construction of bridges and buildings, and
for general structural purposes.
 2:- Supplementary requirements are provided for use
where additional testing are required by the purchaser.
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6. Scope cont.……….
 3:-When the steel is to be welded, a welding
procedure suitable for the grade of steel and intended
use or service or service is to be utilized (A 6/A 6M)
 4:-The values stated in either inch-pound units or SI
units are to be regarded separately as standard.The
values stated in each system are not exact equivalents
10/15/2012 Prepared by 3rd Group 6

7. Scope cont.……….
 5:-This specification contains notes or some footnotes
can be used for extra details.
 6:- For structural products produced from coil and
furnished without heat treatment or with stress
relieving only, the additional requirements, including
additional testing requirements and the reporting of
additional test results, of A 6/A 6M apply.
10/15/2012 Prepared by 3rd Group 7

8. ASTM A36 Steel Properties
 ASTM A36 has a yield strength of
36,000 psi and an allowable
bending stress of 22,000 psi.
 ASTM A36 is used for most
building components, including
columns, beams, flooring and
finish elements.
 The ductility of ASTM A36 doesn't
allow the alloy to be used as cable,
and it should not be used as
reinforcing bar (rebar).
10/15/2012 Prepared by 3rd Group 8

9. Appurtenant Material
 When some materials are not mentioned in this code
we refer to other codes according to Table 1
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10. General Requirements for Delivery
 4.1:-When we deliver the requirements. We shall
consider the (A6/A6M).due to this specific structural
product ordered, unless a conflict exists in which case
this specification shall overcome.
 4.2:-Coils are excluded from qualification to this
specification until they are processed into a finished
structural product.
 Cut the coils to different lengths as below
(a) DE coiling (e) Cutting to lengths
(b) Leveling (f) Testing
(c) Hot –forming (g) heat treatment
(d) Cold-forming (h) packaging, marking,
10/15/2012 Prepared by 3rd Group 10

11. Bearing Plates
 plates used as bearing plates for bridges shall be
subjected to mechanical tests and shall conform to the
tensile requirements
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12. Bearing Plates cont.
 5.2:- plates used as bearing
plates for bridges shall be less
than (1.5 in) in thickness.
 5.2:- We can not use the steel
plates over (1.5in) thickness and
shall contain 0.2 to 0.33 % of
carbon by heat analysis that the
chemical composition shall obey to
the requirements of Table 2 in
phosphorus and sulfur content, and
that a sufficient discard shall be
made to secure sound plates.
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13. Chemical Composition
 The heat analysis shall conform to the requirements
prescribed in Table 2,
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14. Tension Test
 8.1 The material as denoted by the test specimen,
except as specified in 5.2 and 8.2, shall conform to the
requirements as to the tensile properties prescribed in
Table 3.
 8.2:- Shapes less than 1 in² [645 mm 2] in cross section and Bars
less than 1⁄2 in. [12.5 mm] in thickness or diameter need not be
subjected to tension tests by the manufacturer. provided that the
chemical composition used is appropriate for obtaining the tensile
properties in Table 3.
10/15/2012 Prepared by 3rd Group 14

15. Tension Test cot.
 Barsless than(1in²) cross section Area.
 Flatsless than(0.5 inch)thickness.
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16. Tension Test cont….
Sample test:-
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17. Tension Test.cot….
 LARGE-SCALE TEST SETUP
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18. Tension Test cont….
Graphical show Stress vs. strain curve typical of structural steel
1. Ultimate strength
2. Yield strength
3. Fracture
4. Strain hardening region
5. Necking region
10/15/2012 Prepared by 3rd Group 18

19. 10/15/2012 Prepared by 3rd Group 19