KEYSTONE BLOCK
The number on retaining walling system on the market today. Keystone uses a unique high strength fixing system which securely locks the component parts in place. At the centre of the system are pultruded fibreglass pins which offer a high shear strength that will last the lifetime of the wall.
Keystone provides design flexibility to meet the unique challenges of modern commercial development projects; whether you are building tall retaining walls, short walls, using curves or corners, considering rapid changes in elevation detail or using Keystone with other specialist materials.
This proven system enhances the architectural importance of any structure whether new-build or refurbishment.
Usage:
- Retaining Walls
- Embankments
- Culverts
- Tunnels and stations
- Access Ramps
Colours available as special order: Hamstone, Bathstone, Terracotta, Black, Russet
| Product Code | Dimensions (mm) W x L x H | Weight (kg) | Pack Size | Exposed Face Area | Coverage | Colour | Product Image |
|---|---|---|---|---|---|---|---|
|
KEYCOM01 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
FLINT |
|
|
KEYCOM02 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
YORKSTONE |
|
|
KEYCOM04 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
SANDSTONE |
|
|
KEYCOM06 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
IVORY |
|
|
KEYCOM22 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
PEWTER |
|
| Product Code | Dimensions (mm) W x L x H | Weight (kg) | Pack Size | Exposed Face Area | Coverage | Colour | Product Image |
|---|---|---|---|---|---|---|---|
|
KEYCOMSF01 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
FLINT |
|
|
KEYCOMSF02 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
YORKSTONE |
|
|
KEYCOMSF04 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
SANDSTONE |
|
|
KEYCOMSF06 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
IVORY |
|
|
KEYCOMSF22 |
300 x 455 x 200 |
39.5 |
24 |
0.091m2 |
2.184m2 |
PEWTER |
|
Yes, we employ a third party engineer to undertake a fully PI backed design
Yes, it is possible to create both convex and concave curves with Keystone.
The fill material typically falls within the general guidelines of 6I/6J as per the Specification for Highway Works and is deemed to be a well or uniformly graded granular material.
A gravity Keystone wall can be built up to around 1m. Employing the use of Insitu concrete behind the wall can increase this height up to approximately 1.8m.
The grid length is typically around 0.7 times the height of the wall however the minimum grid length to comply with BS 8006 is 3m.
The BBA certificate held by Anderton Concrete is based upon the use of Tensar 500 series grids. Other grids can be used behind a Keystone wall but this would be at the designer’s discretion and they would need to ensure that the use of a different grid complies with all the relevant regulations.
The normal design for a reinforced earth wall has a 300mm zone directly behind the wall formed from a 4-20mm angular drainage stone feeding into a drainage pipe at the bottom that leads to the site drainage system
Yes, however this should be behind the wall and not fixed directly to the top of the wall.
Yes, however the design of this should be fully checked by an engineer as the grid lengths in the lower wall may need to be longer than typical to satisfy stability requirements.
There are 24 Keystone Compac blocks in a pack which covers 2.194m²
There are 10.941 blocks per m² of wall.
