With the increasing popularity of steel structure, the consumption of C-section steel and Z-section steel increases, and what's the difference between them?
1、The angle of DNV GL grade E Z section steel is different from that of DNV GL grade E C section steel. DNV GL grade E C section steel is 90 degrees, while DNV GL grade E Z section steel is less than 90 degrees. Therefore, when purlins are used for roofs with a certain slope, the angle of purlins should be considered in combination with the stress knowledge. DNV GL grade E Z section steel with a large slope can make full use of its bending resistance.
2、 Compared with the section of DNV GL grade E C steel and DNV GL grade E Z steel, the mechanical properties of the strong and weak shafts are quite different, and the connection with the steel frame is mostly hinged by bolts, which should be considered as simple support in calculation. Therefore, from the point of view of stress state, structure and calculation results, the latter is more reasonable, so DNV GL grade E Z section should be selected preferentially in addition to the treatment needs of door and window openings and other special joints.
3、When the roof slope is small, the modulus of bending section of DNV GL grade E Z-shaped steel purlin is slightly higher than that of DNV GL grade E C-shaped steel purlin, but the difference is not significant. When the roof slope is increased, the modulus utilization of bending section of DNV GL grade E Z-shaped purlin symmetrical to the vertical direction increases.
