Top Hats
Verified by manufacturer over a year ago
Alternative to purlins or girts.
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 | |
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
Classification data | |
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 guidanceVaries depending on profiled and base metal thickness. |
Span | 1500 mm. 1750 mm. 2000 mm. 2250 mm. 2500 mm. 2750 mm. 3000 mm. 3250 mm. 3500 mm. 3750 mm. 4000 mm. 4250 mm. 4500 mm. 4750 mm. 5000 mm. 5250 mm. 5500 mm. 5750 mm. 6000 mm. Manufacturer guidanceStandard 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 guidanceTo 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 guidanceContact manufacturer for guidance if to be used within 1 km of industrial, chemical, marine or corrosive environments. |
Compatibility | Manufacturer guidanceNever 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
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