751.3 Structural Steel Design Properties: Difference between revisions
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'''Structural Steel (AASHTO M270/ASTM A709)''' | |||
All structural steel will be AASHTO M270/ASTM A709 Grade 36 (< | All structural steel will be AASHTO M270/ASTM A709 Grade 36 (F<sub>y</sub> = 36 ksi) or Grade 50 (F<sub>y</sub> = 50 ksi) except where weathering steel (AASHTO M270/ASTM A709 Grade 50W steel) is indicated on the Design Layout or in special cases. Welded or seamless steel shell (pipe) for CIP pile will be ASTM A252 Modified Grade 3 (F<sub>y</sub> = 50 ksi). For pipe common available nominal wall thicknesses, see [[751.36_Driven_Piles#751.36.2.2.2_Cast-In-Place_(CIP)_Pile|EPG 751.36.2.2.2]]. '''See Project Manager for use of structural steel with F<sub>y</sub> greater than 50 ksi.''' | ||
Note: ASTM A709 Grade 50S shall not be specified for HP piles or other structural shapes without prior confirmation of the availability of the material. | |||
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|+'''Available Material''' | |+'''Available Material''' | ||
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| | !style="background:#BEBEBE"|Grade!!style="background:#BEBEBE"|Minimum Yield Strength,<br/>F<sub>y</sub>, ksi!!style="background:#BEBEBE"|Maximum Plate Thickness,<br/>inches!!style="background:#BEBEBE"|Shapes | ||
|- | |- | ||
|36||36||4 | |36||36||4<sup>1</sup> ||All | ||
|- | |- | ||
|50||50||4||All | |50||50||4||All | ||
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|- | |- | ||
| rowspan="2"| HPS70W | | rowspan="2"| HPS70W | ||
| rowspan="2"| 70 ||2" TMCP | | rowspan="2"| 70 ||2" TMCP<sup>2</sup>|| rowspan="2"| N/A | ||
|- | |||
|4" Q&T<sup>3</sup> | |||
|- | |||
|colspan="4" align="left" width="450"|<sup>1</sup> Thickness of plate up to 8 inches may be used when fabricating bearings using ASTM A709 Grade 36 steel. | |||
|- | |||
|colspan="4" align="left"|<sup>2</sup> TMCP, Thermo Mechanical Controlled Process | |||
|- | |- | ||
|4" Q & T | |colspan="4" align="left"|<sup>3</sup> Q&T, Quenched & Tempered | ||
|} | |} | ||
[[Category:751 LRFD Bridge Design Guidelines|751.03]] | |||
[[Category:751 LRFD |
Latest revision as of 13:06, 20 August 2024
Structural Steel (AASHTO M270/ASTM A709)
All structural steel will be AASHTO M270/ASTM A709 Grade 36 (Fy = 36 ksi) or Grade 50 (Fy = 50 ksi) except where weathering steel (AASHTO M270/ASTM A709 Grade 50W steel) is indicated on the Design Layout or in special cases. Welded or seamless steel shell (pipe) for CIP pile will be ASTM A252 Modified Grade 3 (Fy = 50 ksi). For pipe common available nominal wall thicknesses, see EPG 751.36.2.2.2. See Project Manager for use of structural steel with Fy greater than 50 ksi.
Note: ASTM A709 Grade 50S shall not be specified for HP piles or other structural shapes without prior confirmation of the availability of the material.
Grade | Minimum Yield Strength, Fy, ksi |
Maximum Plate Thickness, inches |
Shapes |
---|---|---|---|
36 | 36 | 41 | All |
50 | 50 | 4 | All |
50W | 50 | 4 | All |
HPS70W | 70 | 2" TMCP2 | N/A |
4" Q&T3 | |||
1 Thickness of plate up to 8 inches may be used when fabricating bearings using ASTM A709 Grade 36 steel. | |||
2 TMCP, Thermo Mechanical Controlled Process | |||
3 Q&T, Quenched & Tempered |