Estate Access Road & Drainage
Access road, storm water drainage, culverts and surface reinstatement.
A sample entry showing the structure of a project page. Not a Daima project — and excluded from search indexing until it is real.
- Location
- Ruaka, Kiambu County
- Sector
- Residential estate management
- Status
- Completed
- Completed
An estate access road rebuilt with a proper drainage system. The road surface was the visible problem; standing water with nowhere to go was the actual one. Resurfacing without fixing the drainage would have bought a season or two at most.
Levels were surveyed across the whole estate before any design decisions were made, so that falls could be set to somewhere water could actually discharge.
Services drawn on
Project data
- Road length
- To be supplied
- Carriageway width
- To be supplied
- Surfacing
- To be supplied
- Drainage
- Lined channels, culverts and piped outfall
- Contract duration
- To be supplied
- Contract type
- To be supplied
Dashed slots are figures deliberately left unfilled. Nothing here is estimated or invented.
What was built.
- 01Topographic survey and drainage level design
- 02Excavation and removal of failed pavement
- 03Sub-base preparation and compaction
- 04Storm water channels, culverts and outfall connection
- 05Base course and surfacing
- 06Kerbs, edge restraint and reinstatement
How it was built.
PLATE 01The outfall was identified and confirmed first. Every gully and channel level was then worked backwards from it, which is the only order that produces a drainage system that actually runs.
The failed pavement was dug out rather than overlaid, because a new surface over a failed base fails in the same places.
Compaction was tested at formation and sub-base before surfacing, so that the road was signed off on the layers nobody can see afterwards.
On site.
PLATE 02
PLATE 03
PLATE 04
PLATE 05
PLATE 06
PLATE 07What the site presented, and what was done about it.
Challenge
Residents needed vehicle access to their homes for the whole of the works.
Solution
The road was rebuilt in half-widths with a signed running lane maintained throughout, and each section was reopened before the next was closed.
Challenge
The available outfall was shallower than the required falls first suggested.
Solution
Channel gradients were re-set across the full length from the outfall backwards, and one culvert crossing was lowered, rather than accepting a flat run that would silt up.
Outcome
An access road that drains to a confirmed outfall, with compaction and levels recorded at each layer.
Nearby in type or method.
Have a project like this?
Send us the drawings if you have them, or just describe the site and what you want built. We will tell you what it needs.