Naylor

Metro Access Chambers

Description

The Naylor Modular Access Chambers systems are an easy to assemble, eco-friendly system, which can either be supplied flat packed or pre-assembled depending on the customer’s preference.

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 and galvanised 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)

Additional Information

Metro Access Chambers supplied fully assembled or flat packed

Select to view variations:

Metro Access Chamber

Product code

69224

Attributes

Length
300mm
Width
300mm
Depth
330mm

Metro Access Chamber

Product code

69225

Attributes

Length
450mm
Width
300mm
Depth
330mm

Metro Access Chamber

Product code

69226

Attributes

Length
450mm
Width
450mm
Depth
330mm

Metro Access Chamber

Product code

69227

Attributes

Length
600mm
Width
450mm
Depth
330mm

Metro Access Chamber

Product code

69228

Attributes

Length
600mm
Width
600mm
Depth
330mm