NBS Source
DuoSpan® Subframe

Application

Suitable for roof terraces and ground-level terraces, installed onto DuoLift Joist Supports over a solid/ stable base.

Suitable for areas over soft substrates such as patio areas or boardwalks, when installed using DuoSpan beams and posts.

Description

Durable aluminium subframe providing structural integrity and design flexibility, combining the strength of aluminium with the design flexibility of recycled plastic.

DuoSpan® is comprised of aluminium joists, aluminium beams, aluminium brackets and plastic joist inserts that can be used with the DuoLift® joist pedestal system if installed over a solid/ stable base.

The product provides the perfect subframe for Millboard decking, as well as a universal support system for other outdoor flooring. Its design facilitates top-down fixing of decking boards and makes it an easy installation for all levels of competence.


Features and benefits:

  • Complies with Eurocode 1: Actions on Structures (BS EN 1991-1-1).
  • Can be used as subframes for Millboard, WPC, timber, or other types of decking board.
  • Lightweight aluminium profiles are always straight.
  • Plastic Insert allows decking fixings to be put in at almost any angle.
  • Specially designed brackets provide guidance to get two joist profiles aligned and flush.
  • Cathodic barrier coated fixings limits the chance of galvanic corrosion.
  • The blend of Plas-Pro plastic profiles aides curved designs.
  • Lightweight, ease of handling, simple stable fixing, corrosion resistant, slot and screw assembly, flexible connectivity.


Components:

  • DuoSpan 51 x 68 x 3600 mm Joist.
  • DuoSpan 99 x 68 x 3600 mm Joist.
  • DuoSpan 136 x 63 x 3600 mm Beam.
  • DuoSpan Bracket Sets.


Ground preparation:

  • DuoSpan 51 mm Joists: DuoLift Supports over a solid/ stable base.
  • DuoSpan 99 mm Joists: DuoLift Supports over a solid/ stable base, or Plas-Pro posts and DuoSpan beams over a soft base.

General information

Shape

Rectangle

Color

Grey

Mill - aluminium grey.

Black

Plas-Pro.

Finish

Mill

Material

Aluminium

Plastic

Recycled plastic.

Size

51 x 68 x 3600 mm

51 mm joist.

99 x 68 x 3600 mm

99 mm joist.

136 x 63 x 3600 mm

Beam.

Uniclass

Pr_20_76_51_07 Aluminium structural sectionsPrimary

CAWS

Q55/110 Deck

Q55/120 Boardwalk

Specification data - Aluminium structural sections Enhanced data

Structural sections

-

Size

136 x 63 x 3600 mm.

DuoSpan 136 mm Beams. 7.9 kg.

Finish

-

Applied

Mill finish.

Colour

Mill - aluminium grey.

Black Plas-Pro.

Joists

51 x 68 x 3600 mm.

51 mm joist. 4.1 kg.

99 x 68 x 3600 mm.

99 mm joist. 5.4 kg.

Thermal expansion

0.0235 mm/m/°C.

Standard

Extrusion standard.

EN 755-9.

Load

Point load deflection criteria.

1/250 (51 mm joist) 1/360 (99 mm joist).

Span

Consult manufacturers loading tables for more information.

  • 51 mm Joist: 900 mm centres for residentials applications and 600 mm centres for commercial applications.
  • 99 mm Joist: 1800 mm centres for residential applications and 1350 mm centres for commercial applications.

-

Accessories

None.

DuoSpan beams.

Plas-Pro posts.

DuoSpan brackets and fixings.

DuoLift joist supports.

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Environmental information

Recyclability

100%

Recycled content

%

Partly Recycled.

Digital objects

Platform Compatible Version Certified to
Revit
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IFC
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