CityTop manufactures high quality, light weight structural cold-rolled components for supporting all types of roofs. Generally most of our structural products are roll-formed. If you have an unusual requirement, contact us as we able to design and build for your future house or commercial building.

If you are looking for the complete roofing system, consider using our CityTruss Steel Roof Framing System.

Purlins



Material Specifications
Cross Sect. Height 
Base Steel Thickness
Steel Grade

Yield Stress
Zinc Coating
Mechanical Property


Tolerences


: 75mm, 100mm, 150mm, 200mm
: 0.75mm, 1.0mm, 1.2mm, 1.60mm, 2.0mm and 2.50mm
: ASTM A446 Grade E Modified
  (AS 1397 – G450)
: 450 Mpa (Minimum)
: 275 g/Sq.mYield Stress
: Y/P 450 MPa (Minimum)
  T/S Min 510 Mpa
  E/L Min 10%
: Depth               : + 1mm
: Flange Width    : + 2mm
: Length              : + 3mm
: Hole Centres     : + 1.5mm



Battens



Material Specifications
Cross Sect. Height 
Base Steel Thickness
Steel Grade

Yield Stress
Zinc Coating
Mechanical Property




: Cross Sect. Height 40mm, 61mm
: 0.55mm, 0.75mm
: ASTM A446 Grade E Modified
  (AS 1397 – G450)
: 450 Mpa (Minimum)
: 275 g/Sq.mYield Stress
: Y/P 450 MPa (Minimum)
  T/S Min 510 Mpa
  E/L Min 10%



CityTruss

CityTruss Steel Roof Framing System is the ultimate solution to replace traditional timber or welded hot-rolled steel truss. This structures are designed and built for life. Outstanding benefits include:

  • High corrosion resistance
  • Lightweight resulting in savings on the overall cost of building
  • Non-combustible
  • Resists warping, twisting, shrinking & deteoration
  • Engineered & dimensionally accurate resulting in true surface for fixing of internal linings
  • Hot dip Galvanise steel
  • High Strength – Low cost
  • Design Versality
  • Consistent standard
    The list of benefits go on & on.

“Specify CityTop CityTruss systems for your next roofing Project!”



General Specifications
Truss System

Truss Span

Truss Spacing

Roof Pitches
Wind Conditions
Truss Members





Connections


Plates

Available Manuals




: Up to 1000mm centers to 3000mm
  Centers
: Up to 15m for tile & sheet roof
  construction
: Up to 1500mm centers to 3000mm
  Centers
: 3 to 40 degrees
: W27N, W33N, W41C, W50C
: Top & Bottom Chords fabricated
  from 1.0mm BMT G550 A2150 C Channel to
  2.0mm BMT G450 A2150.
  Truss Webs fabricated from 0.75mm
  BMT G550 A2150 or 1.0mm BMT
  G550 A2150 C Channel.
: Self drilling screws or self piercing
  rivets depending on combinations of
  the above parameters.
: Heel Brackets and apex plate 1.2mm
  BMT G450 AZ150
: Roof Truss Specifications
  CityTruss Engineering Handbook
  Roof Truss Installation Manual

Typical Installation