The Naylor Modular Access Chambers systems are an easy to assemble, eco-friendly system.
Features and Benefits:
Panels are injection moulded in 100% recycled Polypropylene
Panels are easy to assemble, and designed to interlock at the corners with an integrated mortice and tenon taper lock system
The external wall is patterned such that a concrete surround will flow into voids, adding to the structural strength of the system.
Panels are available in 300mm, 450mm and 600mm sizes, allowing for a range of chamber sizes to be assembled (larger sizes available on request)
Panels are 330mm deep, with interlocking features which allow for 3 boxes to be easily stacked per metre depth
A range of composite covers and frames are available for all sizes
Wide internal flange within the chamber enables covers and frames to fit straight onto the box, therefore direct loading is transferred evenly
Panels have trepanned holes which take electricity and utility duct sizes from 63mm to 160mm
Adaptors are available for 178mm duct
Chambers are versatile and suitable for most ducting applications
System is approved for use by many Local Authorities and Utility Sectors
Installation
Excavate the required specified location, to the depth of appropriate number of chambers required, (maximum 3 chambers), plus additional 40mm for depth of base
Install chamber centrally within the specified trench/location
Base of excavated area to be well compacted granular material or concrete slab is preferred.
Drainage runs within the slab are required to allow excess water to drain freely from the constructed chamber
Before duct connection takes place, the trepanned holes located on each chamber will require cutting out to specified diameter
Allow minimum clearance of 150mm surrounding the chamber for solid concrete support, which should be of a semi-dry workable mixture
Ensure concrete fill is evenly distributed around the chamber and level with the top surface
Concrete the frame at the appropriate height
Chambers, when completed, must be internally free from any debris
Specification
Chamber panels are available in 300mm, 450mm and 600mm widths (all 330mm high)
Chambers can be supplied pre-assembled in the following sizes (mm): 300×300, 300×450, 450×450, 450×600, 600×600 (larger fabricated sizes available on request)
Chambers are able to be stacked 1, 2 or 3 units high
Chambers have pre-trepanned cut out areas to accept 63mm, 110mm, 120mm and 160mm diameter duct (adapters for 178mm duct are available on request)
The installed chamber shall have a C15/ST3 concrete base and surround, 150mm surround and 150mm base bedded on a 100mm Type 1 sub-base or concrete slab with a 50mm drain hole (base to be constructed first and have a smooth finish)
Installed chambers meet the Highway Regulations of minimum duct cover in both footways and road verges
For traffic signal/street lighting applications the covers are non-ferrous composite material and fit closely within a galvanised steel frame. Covers are black in colour and marked “Naylor Drainage” with the legend “Traffic Signals” or “Street Lighting” and have integral lifting keyholes and an anti-skid pattern on the upper surface
The frame must be supported on the concrete surround of the chamber on a bed of mortar
The cover and frame will meet the loading requirements of BS EN124 Class B125
All quality systems and inspection procedures comply with BS EN ISO 9001: 2008 (Certificate No: FM 01420)