Fire Resistance
All materials used in true-Crete refuse chutes
are non-combustible. The concrete units have a normal minimum fire
resistance of one hour, but have been successfully tested for four hours.
No fire stopping is normally needed between floors in connection with
the installation of a concrete chute.
The cast aluminium hoppers are of a type which has been successfully tested
for four hours. The steel hoppers have double-skinned doors, incorporating
a layer of calcium silicate board.
For details of fire precautions in the bin room please see the section on
Refuse Chute Extensions.
Noise Reduction
BS 5906:1980 refers to noise nuisance which can
be caused by refuse chutes. The walls of True-Crete concrete chutes
are 75mm thick, giving great reductions in sound transmission compared with
metal chutes.
For detailed measurements of the units we produce please see diagrams below.
Bearer Units
The chute is normally supported by a bearer unit on each floor slab. If
space is insufficient for normal LC3, VLC3 or VLC3E bearer units then they
can be supplied with either one or two flat sides.
Hopper Units
The type of hopper required determines the concrete hopper unit needed.
Standard Units
The standard LC2 or VLC2 is 372mm high but shorter units, between 120mm and 340mm, can be supplied to meet storey height requirements.
Access for Inspection and Cleaning
Access to the interior of the chute can normally be gained by removal of hopper doors. If desired, one or more access units LC2D or VLC2D can be installed at appropriate points. Where there is a wall in front of the chute, a steel sleeve and cover plate can be supplied for use with the access unit.
Extensions
Extensions for directing refuse into bins are made from 10 gauge (3mm) mild steel, hot dip galvanised after manufacture. All extensions are individually made and can be of straight-through, offset, swivel or twin outlet type to suit almost any bin room situation.
Refuse Hoppers
Every refuse hopper is fitted with vandal-resistant hinges requiring a special screwdriver to remove the door. The Code and Trug hoppers are manufactured from high quality aluminium. other hoppers can be either stainless steel or galvanised mild steel.
Building Work
All units except caps have lifting sockets cast
in to facilitate unloading and site handling. Units have joints with
19mm rebates and should be built with sockets uppermost using normal Portland
cement mortar. The assembled chutes need not be clad in any way.
Detailed instructions are available on request.
Installation
The company can provide a comprehensive installation
and sitework service, for new refuse chutes and repair and refurbishment
of old chutes and hoppers.
Handling and storage
Concrete units can be lifted by hoist or crane using lifting loops or eye
bolts in sockets which are cast into all units except caps. They should
be handled and stored with care to avoid damage to exposed edges.
