# Civil Engineering - Theory of Structures - Discussion

Discussion Forum : Theory of Structures - Section 1 (Q.No. 2)

2.

The shape factor of standard rolled beam section varies from

Discussion:

23 comments Page 1 of 3.
Sunny Kumar said:
3 years ago

Rectangle/ square - 1.5

Triangle with vertex upward -2.34 (best section)

Triangle with vertex horizontal - 2

Solid circular section - 1.7

Thing ring - 1.27

Diamond section (Rhombus) - 2

Thin hollow Rhombus - 1.5

I section ( about strong axis) - 1.12 to 1.15

I section ( about week axis ) - 1.55

T- section - 1.9 to 1.95

Triangle with vertex upward -2.34 (best section)

Triangle with vertex horizontal - 2

Solid circular section - 1.7

Thing ring - 1.27

Diamond section (Rhombus) - 2

Thin hollow Rhombus - 1.5

I section ( about strong axis) - 1.12 to 1.15

I section ( about week axis ) - 1.55

T- section - 1.9 to 1.95

(2)

Gajan Rana said:
6 years ago

@Asaithambi.

Shape factor for Rectangular section = 1.5 & Circular section = 1.7.

Shape factor for Rectangular section = 1.5 & Circular section = 1.7.

MKS said:
4 years ago

The ratio of the plastic moment to the yield moment is known as the shape factor. For a rectangular section the plastic moment Mp is about 1.5 times greater than the elastic moment capacity. For an I-section the value of the shape factor is about 1.12.

Deepak Baswal said:
5 years ago

The shape factor of the standard rolled beam section varies from 1.10 to 1.20. 1 section is in rolled section and other circular rectangular etc are not in a rolled steel section.

Sanket Sangale said:
5 years ago

I-section. - 1.14.

Rectangle & square. - 1.5.

Circular. - 1.7.

Diamond - 2.0.

Triangular - 2.34.

Rectangle & square. - 1.5.

Circular. - 1.7.

Diamond - 2.0.

Triangular - 2.34.

Dileep said:
5 years ago

What is y1 and y2 and how to find out them?

SURAJ GIRI said:
5 years ago

Shape factor for square section = 1.5,

Rectangular section = 1.5.

I-section = 1.12 to 1.2.

Tube = 1.27.

Triangle = 2.346.

Diamond-section - 2.

T section : 1.90 - 1.95.

Rectangular section = 1.5.

I-section = 1.12 to 1.2.

Tube = 1.27.

Triangle = 2.346.

Diamond-section - 2.

T section : 1.90 - 1.95.

Vaibhav said:
6 years ago

What is y1 and y2 and how to determine them?

Har said:
6 years ago

Plastic analysis, the shape factor for rectangular section, is 1.5.

Manikandan said:
6 years ago

For rectangular 1.5.

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