Z Purlin Section Properties

Product Specification

Roof and wall cladding systems in industrial and commercial buildings often use Z-shaped purlins. The section characteristics of the Z-shaped purlin determine its bearing capacity and structural performance. These properties include:

1. Section modulus (Z):

The section modulus (Z) of a Z-shaped purlin expresses its ability to resist bending. It can be calculated by multiplying the moment of inertia (I) by the distance (c) from the neutral axis to the end fiber. Z is the key factor in the bending ability of a Z-purlin, measured in cubic inches.

2. Moment of inertia (I):

The moment of inertia (I) of a Z-shaped purlin is a measure of structural stiffness and is used to describe its ability to resist bending. I is calculated by summing the contributions of the various parts that make up the shape. The moment of inertia of the Z-shaped purlin is related to its rigidity.

3. Plane area:

The cross-sectional area of a Z-shaped purlin is the cross-sectional area of the shape, measured in square inches. It is a measure of the amount of material in a shape and is used to calculate the overall strength of a Z-shaped purlin.

4. Section depth:

The section depth (d) of Z-purlins is the distance between the top and bottom flanges calculated in inches. It determines the axial bearing capacity of the Z-shaped purlin.

5. Flange width:

Flange width (b) for Z-shaped purlins indicates the width in inches of the top and bottom flanges. It is a key factor in determining the bending resistance of Z-shaped purlins.

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