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Top Hats

Verified by manufacturer over a year ago

Metroll

Alternative to purlins or girts.

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Application

Suitable for use in sheds, light industrial and commercial buildings when used as a secondary member supporting roof or wall cladding.

Description

Top Hats are alternative to purlins or girts and are ideal where greater roof spans are required. They are manufactured from high-tensile galvanised steels or ZINCALUME® steel, with features including:

  • Quick installation.
  • Easily fixed with self-piercing fasteners.
  • Straight and true.
  • Termite and bora proof.
  • Fire resistant.
  • Easy to handle and store.
  • Available in a range of spans and gauges.
  • Available in both ZINCALUME® and galvanised steels.

General information

Shape

Rectangle.

Material

Steel.

Uniclass

Pr_20_76_51_21 Cold-formed galvanized steel sectionsPrimary

SpecPack

05400 Cold-Formed Metal Framing

NATSPEC National Classification System

0342 Light Steel Framing

SpeedSpec

05400 Cold Formed Metal Framing

Specification data - Cold-formed galvanized steel sections

Material

-

Standard

To AS/NZS 4600.

Designation

G550.

Thickness

0.75 mm.

0.95 mm.

1.15 mm.

Corrosion protection

-

Standard

To AS 1397.

Class

AZ150.

Material

ZINCALUME® steel.

Galvanised steel.

Size

64 mm (depth) x 107.25 mm (width).

96 mm (depth) x 109 mm (width).

120 mm (depth) x 141 mm (width).

MassDensity

1.223 – 1.957 kg/m (64 mm profile).

1.93 – 3.08 kg/m (120 mm profile).

Manufacturer guidance

Varies depending on profiled and base metal thickness.

Span

1500 mm.

1750 mm.

2000 mm.

2250 mm.

2500 mm.

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Manufacturer guidance

Standard spans for 64 mm and 96 mm profiles range from 1500 mm to 6000 mm. For 120 mm profiles, spans range from 2000 mm to 6000 mm only.

End laps

-

Manufacturer guidance

To achieve structural lap, minimum overlap length should be 15% of the span, i.e. 7.5% at each end. For non-structural laps, minimum overlap should be 100 mm in length.

Weather conditions

-

Manufacturer guidance

Contact manufacturer for guidance if to be used within 1 km of industrial, chemical, marine or corrosive environments.

Compatibility

-

Manufacturer guidance

Never use on or in conjunction with lead, copper, bare metal, stainless steel, mortar, concrete, green and some chemically treated timbers.

Literature

Ceiling Battens, Roof Battens & Top Hats Design Manual

Ceiling Battens, Roof Battens & Top Hats Design Manual