Building System – Main Structure – Secondary

Main structure

Secondary

Structural steel - Secondary framing

Secondary framing consists of the elements which support the roof and wall sheeting and which transfer loads to the primary framing:
- Roof purlins
- Wall girts
- Framing of openings

Purlins and girts are galvanized Z sections, produced by cold roll forming. Connections are made using galvanized bolts. Framings of openings essentially consist of cold-formed L, C, U or Z galvanized sections.

Advantages

  • Quality design, manufacturing and erection
  • Secondary framing galvanized as standard
  • Fast and easy erection
  • Purlins can be used as cable trays
  • Long-lasting performance

Technical Specifications

  • Purlins and girts with a Z profile are produced by cold roll forming coils of steel.
  • The purlins are fixed to the rafters, and due to the overlaps between the purlins above the rafters, act as continuous beams.
  • The sidewall girts are also generally continuous with overlaps adjacent to the main frame columns, but can also be simply supported between columns. These two conditions also apply to the endwall girts.
  • Normally a continuous Z purlin or a continuous double Z is used as an eave member, depending on the loading and the eave condition.
    Building System – Main Structure – Secondary Building System – Main Structure – Secondary Building System – Main Structure – Secondary

Gallery

  • Building System – Main Structure – Secondary
  • Building System – Main Structure – Secondary
  • Building System – Main Structure – Secondary

Assembling instruction

#01 Anchor bolts

This video presents following procedures of anchor bolts assembling: • Geodetic survey • Preassembling set of anchor bolts • Placing and fixing anchor bolts • Checking correct position

Video: Anchor bolts
1 2 3 4 5 6 7 8 9 10 Tragkonstruktion
  • These are explanation videos about the Astron building system.
  • They teach you how to correctly install the different elements of the system.
  • These videos will never replace a personal training.
  • Only certified erectors are allowed to install this product.
  • The videos focus primarily on the erection sequence of our products and do not instruct how to ensure the safety regulation on the site.