Indian Standard Beam Profile

ISLB 75 ( Indian Standard Low Weight Beam )

Beam

Weight / meter

6.10 kg/m

13.44806 lbs/m

Weight / feet

1.85928 kg/ft

4.0990109 lbs/ft

Property	Value
Name	ISLB 75
Common Name	Indian Standard Low Weight Beam 75
Weight per Meter (w)	6.10 Kg/m
Sectional Area (a)	7.71 cm²
Depth of Section (h)	75 mm
Width of Flange (b)	50 mm
Thickness of Flange (t_f)	5.00 mm
Thickness of Web (t_w)	3.70 mm
Moment of Inertia (l_xx)	72.70 cm⁴
Moment of Inertia (l_yy)	10.00 cm⁴
Radius of Gyration (r_xx)	3.07 cm
Radius of Gyration (r_yy)	1.14 cm

Property	Value
Modulus of Section (Z_xx)	19.40 cm³
Modulus of Section (Z_yy)	4.00 cm³
Radius at Root (r₁)	6.50 mm
Radius at Toe (r₂)	2.00 mm
Slope of Flange (D)	91.50 degrees
Connection (h₁)	51.70 mm
Connection (h₂)	11.65 mm
Connection (b₁)	23.15 mm
Connection (c)	3.35 mm
Connection (g)	30 mm
Connection (g_l min)	-1 mm
Max Size of Flange Rivet	6 mm

Other I - Beam Profile

Junior Beam

Low Weight Beam

Medium Weight Beam

Wide Flange Beam

High Weight Beam

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Some Important Definitions

Sectional Area

The Cross section of an object is the shape you get when you cut straight through an object. For cylinder it can be a rectangle, a circle even an oval, depending on how it has been cut.

Depth of Section

The effective depth of a section, d is defined as the distance from the extreme concrete fibre in compression to the centre of gravity of the longitudinal tension reinforcement.

Width of Flange

The actual width of the flange is the spacing of the beam, which is the same as the distance between the middle points of the adjacent spans of the slab.

Thickness of Flange

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Thickness of Web

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Moment of Inertia

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Radius of Gyration

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Modulus of Section

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Radius of Root

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Radius of Toe

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Slope of Flange

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Max Size of Flange Rivet

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