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CPM offer a range of precast communication boxes complying with the requirements of The Highway Construction Details Installation Drawings for Ducted Cables Types A and B.

For full specification contact our Technical Department.
Dimensions and weights
| Chamber section |
Effective depth mm |
Dimensions mm |
Weight kg’s |
| Internal |
External |
| Type A base |
260 |
1250 x 800 |
1560 x 1100 |
803 |
| Type B base |
200 |
600 x 550 |
850 x 850 |
285 |
| Type A chamber |
750 |
1300 x 850 |
1500 x 1050 |
742 |
| 250 |
1300 x 850 |
1500 x 1050 |
298 |
| Type B chamber |
850 |
600 x 600 |
800 x 800 |
425 |
| 150 |
600 x 600 |
800 x 800 |
100 |
| Type A cover slab |
150 |
1200 x 600 access |
1750 x 1300 |
510 |


Manufacture and design details
- Manufactured in pre-cast concrete, with steel reinforcement for handling purposes only.
- Concrete mix , Grade C50, with waterproof additive.
- Aggregates to BS 882.
- Cement to BS EN 197-1., content = 350kg per m3
- Steps to BS 13101
- Chambers comply with loading requirements of BS 5911-3
- Design similar to Highways drawing detail MCX 0815 Revision D - Type A Chambers.

Manufacture and design details
- Manufactured in pre-cast concrete, with steel reinforcement for handling purposes only.
- Designed as base to Highways drawing detail MCX 0815 – Type A Chambers.


Manufacture and design details
- Manufactured in pre-cast concrete, with steel reinforcement for handling purposes only.
- Designed as base to Highways drawing detail MCX 0815 – Type B Chambers.
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