Collinson Tension Membrane Structures are wide span tension PVC covered buildings suitable for Aviation, Ports Storage, Sports Facilities, Timber Storage, Logistics, Warehousing, Waste & Re-Cycling and many other special applications

Technical Specifications

The significant advantage of Best-Hall buildings is the lower cost foundation requirement as the loading from the steel frame can be considerably less than conventional steel frame buildings.
>40 metre width: Asphalt base* (using our ground anchor system) or concrete beam
>100 metre width: Concrete base (typically a continous concrete beam or pads)

*Dependant on load bearing requirements of building and ground conditions.

Steel lattice trusses and longitudinal secondary rafters.
Dimensioned for snow and wind loads in line with building regulations and for possible conveyor / crane loadings.
The steel frame is supplied shot blasted and then epoxy painted White or Grey; alternatively hot dip galvanised finish is available for specific applications.
Epoxy paint finish is standard in order to provide an extremely smooth finish for tensioning the entire membrane over and also to give an aesthethically pleasing appearance.
The paint colour is White or light grey as standard but virtually any colour is available
Under normal circumstances the the structure is designed to accept an additional loading of 20kg/m2 overall, with a point loading maximum of 150kg.
Additional loads can be accommodated, for example, buildings have been installed with 40T roof mounted conveyors.

Tension PVC Membrane

The cover weighs between 850g/m² and 1,500 g/m².
Tensile strength rating between 4,200/4,000/N/5cm and 10,000/8,000/N/5cm
Weight and strength are dimensioned according to the size/span of the building.
Range of standard colours available, other colours are availble on request (subject to qty).
Logos and Colour schemes are incorporated to achieve the aesthetic appearance required.

Fire Safety

The PVC fabric melts at approx. +300°C whilst the critical temperature of steel is +400-500°C.
In case of fire the PVC cover will disperse in the area exposed to the fire thereby releasing heat, smoke and dangerous gases.
The building can be then be brought back to operation by installing a new PVC cover within days.
Fire reports are available on request

Inner Liner

An inner liner can be installed to increase the insulation to 3.1 W/m2K it also hides the steel trusses on sites with aesthetic requirements.
The inner liner is also used on applications such as compost storage/waste storage, where odours and vapours need to be contained either to protect the structural steel work or keep vapour within the building.

Insulation

Insulation material can be installed in conjunction with the Inner liner system to achieve the desired U value for building regulations