Trisobuild® HW/ FWH

Site assembled walling system with internal and external profiles.

The Trisobuild® systems can be tailored to meet project requirements including fire resistance and acoustic performance.

The Trisobuild® HW System is a horizontally run external wall system which allows the secondary steelwork to remain horizontal with the Instaloc Plus HW spacer and bar system spanning vertically between these rails.

The capability of the system has been tested to provide a range of performances. The wall system can achieve up to four hours fire integrity and one hour fire insulation.

Features and benefits:

• Certified 'very good' to Building Research Establishment (BRE)'s responsible sourcing standard BES 6001.
• Available with Platinum® Plus - a system guarantee for up to 25-years, that covers the durability, structural and thermal performance of all system components. The guarantee is derived from a tailored specification to suit your building function and is fully transferable on change of ownership of the building.
• Loss Prevention Certification Board (LPCB) LPS 1181-1 approved 460a 14, 15, 19, 23 and 31.
• The insulation within the system has both zero ozone depletion potential (ODP) and low global warming potential (GWP). Both these factors support the achievement of a high Building Research Establishment Environmental Assessment Method (BREEAM) rating.
• Trisobuild® horizontal wall systems have been third party assessed using BS 476–22 ‘Fire resistance of non-load bearing elements’.
• The insulation can be separated easily and if kept ‘clean’ can be recycled. An environmental product declaration (EPD) is available for all Trisobuild® systems.

Trisobuild® FW (fire wall) range system build-up:

• The resistance to fire insulation and integrity in minutes are: FW15H: 15/240, FW30H: 30/240, and FW60H: 60/240.
• For the FW15H system, a minimum 160 mm Knauf FactorClad insulation quilt should be used. For the FW30H and FW60H systems, a Rockwool quilt of nominal density 24 kg/m³ should be used. A minimum depth of 160 mm for the FW30H system and 200 mm for the FW60H system. Consult manufacturer for details.
• External profile, side lap stitching is optional but recommended at a maximum 500 mm centres for aesthetic reasons only.
• Minimum 140 mm high Instaloc® Plus HW spacer system for the FW15H and FW30H systems should be used and 180 mm for FW60H.
• Internal liner profile.

Supporting structures:

When sheeting rails heat up during a fire they cease to function as structural members. Therefore, to prevent the wall from moving downwards under its own self-weight either a support at the head or base of the wall is required.

All Tata Steel firewalls can be designed to be supported from eaves, beams/ stanchions or rafters and posts if situated on a gable end. However, these elements must be protected using conventional fire protection materials to give the same period of fire resistance as the firewall.

Reaction and resistance to fire:

• All Trisobuild® HW systems have an internal reaction to fire classification of A1 and an external reaction to fire of A1 when using Colorcoat Prisma® and when using Colorcoat HPS200 Ultra® is deemed to satisfy B-s3-d2 in accordance with ADB2.
• All fire wall system performances have a maximum span limit between supports of 1.525 m.

Thermal performance:

All quoted system U-values and construction ‘psi’ and f values have been computer modelled in accordance with EN ISO 10211 as stated in the Metal Cladding and Roofing Manufacturers Association (MCRMA) Technical Note 14 by trained and experienced technical engineers.

U-Values are based on secondary steelwork support at 1.8 m centres, 1.2 m bracket spacing and insulation with a 0.040 W/mK thermal conductivity.

U-values:

U-Values are based on an LP1000 liner, secondary steelwork support and brackets at 1.5 m centres, 1.5 m vertical bar spacing and insulation with a 0.040 W/mK thermal conductivity.