Unique cable and junction protection boxes are made from reinforced concrete and can be installed in minutes. The one-piece construction design provides easy access for cable jointing and maintenance.
General Comms Box Features
*Comms J4 has no base, sump or steps
^Comms DP has no ironmongery or steps fitted
A major innovation, Comms J4 is a unique one-piece unit manufactured with reinforcements, overcoming the self-assembly problem that is associated with other manufactured units.
Comms 600
FP McCann’s precast concrete MLSC multi-purpose communication chambers can be adapted to suit any site requirements. Their flexible design means that they can be factory fitted with duct couplers, step irons, sump units and rebated walls, as required. Multi-purpose communication chambers can be supplied to suit any loading requirements including up to F900+ for airports and similar heavy-duty applications.
Product features
Cast-In Items
If required, the chambers can be delivered with pre-fitted:
Standard Sizes
Units can be poured in any increment of 100mm from 400mm up to a maximum single unit height of 2400mm internal.
A two or more piece solution is also available if the depth required is greater than 2400mm or if there are on-site weight restrictions that need to be met.
Additional Products
FP McCann manufactures two types of prestressed panels that are ideal for both fire and blast walling.
With the choice of vertical cantilever panels or horizontal panels and columns, fire and blast walls are designed to contain a fire from 30 minutes up to 4 hours, depending on the thickness of the panel. Rapid installation is possible due to the tongue and groove joints. Standard column sections are 500mm x 700mm, with a made-to-order height to customer requirements. Fire walls and columns can be manufactured to the clients’ design or an FP McCann design.
Key features and benefits:
Vertical Cantilever Panel Fire Walls
Horizontal Panel Fire Walls
FP McCann’s precast bespoke pit solutions provide a real alternative to in-situ built pits.
Most airfield projects require the construction of large concrete pits for the main electrical and communication installations. Traditionally, due to their size, these have been constructed in-situ. A modular concrete design has been developed which is factory produced and then assembled on site.
This whole approach has produced a solution which has made a significant and sustainable contribution towards reducing the impact of construction works on the airport environment by reducing time spent on-site, runway possessions and noise.
The end product is of consistently high quality and has the added value of being easier to maintain and alter in the future.
Why an off-site solution
This reduction impacts the number of traffic deliveries to site therefore reducing site storage and site waste. It also eliminates several variables thereby improving programme reliability.
Flexible design
The design of the pits incorporates specially formed plastic sleeves which contain built-in stoppers. The collars are placed in a cluster arrangement avoiding the need to know exactly where future cable runs are. Once a cable location is known, the built-in stopper, within the plastic sleeve can be easily removed. The added benefit of the built-in stopper is that during installation and throughout its life, water ingress through the ducts is prevented. There are many other benefits some of which are listed below:
Where large repetition exists FP McCann can develop a pit solution to suit the specific needs of the client. Typically these could provide high-quality infrastructure for utility companies where large numbers of standard pits are required and where site conditions and constraints require a quick build time.
Drawpits
Part of our StormChamber™ multipurpose chamber range, FP McCann’s draw pits can be adapted to suit any site requirements. Their flexible design means that they can be factory fitted with duct couplers, step irons, sump units, rebated walls and ring beam units, as required.
Drawpits can be supplied to suit any loading requirements such as F900+ for airports and similar heavy-duty applications.
Benefits of Precast Concrete Pits
FP McCann’s cable trough and service ducts are designed and manufactured to comply with loading criteria as set out in accordance with BS EN 1433 (Troughs) and BS EN 124 (Lids).
All standard cable troughs are one metre long. Two-metre units are available on a made-to-order basis. All operations are conducted in accordance with FP McCann’s quality management system, accredited to BS EN ISO 9001.
Product Benefits
FP McCann’s service duct and trough systems have many advantages:
Product Applications
Units to form changes in troughing direction are available in some sizes, maybe cast in-situ or formed from standard units on site. However, care should be taken that such features are suitable for the anticipated trafficking.
Bespoke designs to suit particular conditions can be provided. Corner, tee and specific angled cable trough units are usually available ex-stock. Please contact Gavin Coleman from our sales office to discuss availability.
The units incorporate galvanised steel angles to support lids where necessary and have curved inner corners to allow ease of cable laying.
*Corner Unit Trough Dimensions
*Tee Unit Trough Dimensions
*Angled Unit Trough Dimensions
*All dimensions contained within these table are nominal and do not take into account manufacturing tolerances.
† maximum self-weight = nominal self + 5%, which should be used to size lifting equipment. Additional sizes are available upon request.
Other angled units, including 11.25º, 15º and 30º are available on request
FP McCann provides three types of flush fitting cable trough lids/covers supplied in either reinforced precast concrete, GRP composite or steel tray. All lids are rated in accordance with the loading groups specified in BS EN 124.
All concrete and steel composite covers have cast-in lifting sockets. If required, GRP covers can also have lifting slots.
Locking devices are available for lids to give added security. Sealed units prevent water ingress.