How far can a 4″, 6″, 8″ & 10 inch Z purlin span | how far can a 4 inch z purlin span | how far can a 6 inch z purlin span | how far can a 8 inch z purlin span | how far can a 8 inch z purlin span.

Z purlins or zed purlins are represented by Z alphabet. The shape of Z purlins is similar to that of the Z alphabet. They are mostly made using cold-formed or rolled sheets.

Z purlins are seems like horizontal beams that are designed to form the roof and wall joists of a building shell structure. They sit between the roofing sheets and the building, acting as a support for the sheet to ensure it is firmly attached and safely in place.

Z purlins are most commonly used in industrial and agricultural buildings due to their extremely versatile and lightweight properties which make them easily adapted for use in a variety of different sized buildings.

Z Purlins are used as roofing sheets at such places which needs sturdy and highly durable steel framing supports for industrial and commercial construction. In simple language, Z purlins are a form of steel beams that run across the length of the roofing structure and provides much-needed support.

Z purlins are used as purlins over walls, rafters, floor joists and studs for walls. In the field of architecture, structural engineering or building. A purlin or historically known as purline, purloyne, purling, z perling is a horizontal beam made of steel used for structural support in buildings, most commonly in a roof. It take all the load coming from roof sheets, rafter and withstand with and safely vertically downward transfer to stud or posts.

In this article you know about how far can a 4 inch, 6 inch, 8 inch & 10 inch Z purlin span that will hep you in better sizing and selection of right size Z pulin. The standard sizes for purlins are produced in nominal depth of 4 inch, 6 inch, 8 inch, 10 inch and 12 inch.

Z-section steel is a common cold-formed thin-walled section steel, with a thickness of 1.6mm to 3.0mm and a section height of 4 inches to 14 inches or 120 mm to 350mm. The processing materials are hot rolled (painted) and galvanized. Z-section steel is usually used in large steel structure plants.

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**How far can a 4″, 6″, 8″ & 10 inch Z purlin span**

It is often ask** “how far can a Z purlin span?”,** as per thumb rule, a Z or C shaped metal purlin can allow to span 3 times of its depth. A four inch purlin can allow to span 12 feet. A six inch purlin can allow to span 18 feet. An eight inch purlin can allow to span 25 feet. A ten inch purlin can span 30 feet.

**How far can a 4 inch Z purlin span**

As per general thumb rules and guidelines, a 4 inch (100mm) Z purlin can allow to span 12 feet far distance. Thus, for a 12 foot span, you will need atleast 4″ thick Z shaped metal purlin. Thus a 4 inch depth of Z shaped purlin is most suitable for 12 feet span which can safely transfer the load they carry to trusses.

**How far can a 6 inch Z purlin span**

As per general thumb rules and guidelines, a 6 inch (150mm) Z purlin can allow to span 18 feet far distance. Thus, for a 18 foot span, you will need atleast 6″ thick Z shaped metal purlin. Thus a 6 inch depth of Z shaped purlin is most suitable for 18 feet span which can safely transfer the load they carry to trusses.

**How far can a 8 inch Z purlin span**

As per general thumb rules and guidelines, a 8 inch (200mm) Z purlin can allow to span 25 feet far distance. Thus, for a 25 foot span, you will need atleast 8″ thick Z shaped metal purlin. Thus a 8 inch depth of Z shaped purlin is most suitable for 25 feet span which can safely transfer the load they carry to trusses.

**How far can a 10 inch Z purlin span**

As per general thumb rules and guidelines, a 10 inch (250mm) Z purlin can allow to span 30 feet far distance. Thus, for a 30 foot span, you will need atleast 10″ thick Z shaped metal purlin. Thus a 10 inch depth of Z shaped purlin is most suitable for 30 feet span which can safely transfer the load they carry to trusses.

**Conclusion**:-

A Z purlin can allow to span 3 times of its depth, 4″ Z inch purlin can allow to span 12 feet, a six inch purlin-18 feet, a eight inch purlin-25 feet and a ten inch purlin can allow to span 30 feet.