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In response to environmental requirements, steel structure material shed has been established in recent years. As for the construction of steel structure material shed, C-shaped steel shall be considered as purlin in most drawings. Someone also asked: Is it better to use C-shaped steel or Z-shaped steel for steel purlins? Next, Jinan C Steel Plant will tell you something about it.
1. First, let's talk about the characteristics of Z-shaped purlins and.
A. Since the inertia distance of Z-type purlin in the weak axis direction is larger than that of similar C-type purlin, its integrity is better than that of C-type purlin.
B. Because the joints shall be firmly lapped, so that they will become continuous purlins after lapping, while C-type purlins can only be calculated as simply supported purlins.
2. Now let's talk about the selection of purlins.
A. In general, when the roof load is large, the calculation of C-type purlins is difficult, or the calculated results need to use oversized C-type purlins, consider using.
B. In areas with large basic wind pressure, purlin calculation is often controlled by wind suction at this time. At this time, if it is difficult to calculate with C-type purlin, Z-type purlin can also be selected.
C. It is recommended to use Z-purlins when the roof panel adopts concealed buckle plate and the basic wind pressure of the project site is large. Because many people doubt the reliability of the connection between the concealed buckled plate and the purlin, they are afraid that the concealed buckled plate will be sucked off under the action of strong wind. If this happens, the stability of the weak axis direction of the purlin will become a problem. Generally, C purlins are used when the roof slope is small, Z purlins are used when the slope is large, and C purlins are used when the roof slope is 0.10-0.05!
In terms of stress performance, Z-shaped steel is better than C-shaped steel, but for the convenience of construction, C-shaped steel is generally used for wall and cornice purlins. So that's the end of this question. You can come to our website if you have any ideas about it Put forward and communicate with each other!