Project · Civil and external works

Perimeter fencing and blockwork on sloping ground, New Karu

A blockwork boundary wall following a falling boundary, with reinforced columns, courses laid to line and the drainage edge formed in the same works. Filmed on site in October 2026.

The job

A boundary wall that has to hold on sloping ground

This is external works on an estate plot in New Karu: a blockwork boundary wall following a boundary that falls across its length, with reinforced columns at intervals and the drainage edge formed as part of the same visit rather than left for later.

Sloping ground is where boundary walls fail. Water runs along the wall instead of away from it, undermines the foundation at the low end, and a wall built without movement joints and proper columns cracks within a season. The wall on this job is stepped and columned, with blockwork laid to line and level and the courses kept true across the fall.

Photographs and the clip below were taken by our site team in October 2026, while the work was in progress. Nothing here is a stock image.

Blockwork boundary wall with hollow block columns alongside a sandy site road — Boundary wall and columns, with the site road alongside. Frame from our own site footage, October 2026.

Item	Detail
Job	Perimeter fencing and external works
Location	New Karu, Nasarawa State
Client	Private landowner (name withheld)
Works	Reinforced blockwork boundary wall, columns, blockwork courses, drainage edge and kerbing
Period	2026; in progress when filmed
Drawings and dimensions	Available to clients and tender panels on request

Footage

The work in sequence

A short clip from the site, then stills across the job. Phones are held sideways; we have not cropped the work out to make it look tidier than it is.

A mason placing a hollow block on a wall course beside a block plinth — Blocks laid to a line, with the plinth and setting-out visible. Blockwork is only as good as the line it follows.

A long blockwork boundary wall running across grass on falling ground — The wall running across the fall. Stepped construction keeps the top of wall consistent where the ground does not.

Close view of hollow block courses over a wall, with a pond and open ground beyond — Hollow blocks in course, grouted and levelled. The open water beyond the boundary is exactly why the wall has to sit on a proper foundation.

Blockwork column and wall beside the scaffolding of a building under construction — A column and wall course beside a neighbouring building under scaffolding. Columns, not just blockwork, are what stop a long wall cracking.

Site team working along a blockwork boundary wall — Looking along the run of the wall during construction. Working on a live boundary means keeping access open for the client and the neighbours.

What this job shows about how we work

The wall was set out and levelled before blockwork started, so the top of wall is consistent across falling ground
Reinforced columns were cast at intervals rather than relying on blockwork alone
The drainage edge and kerb were formed as part of the external works, not added after a problem appeared
Blocks were laid to a line with the mortar and course height controlled, which is what limits cracking and gives a straight wall
The client's access along the boundary was kept open throughout, because a wall that blocks a neighbour's route becomes a dispute

Practical warning

Half-finished walls on sloping ground are vulnerable. If a boundary wall is going to stand unfinished through a rainy season, the top course should be protected and the low end drained. We build that into the programme rather than leaving it to luck.

Fencing a plot?

Send the boundary length, a photograph of the ground and whether you need a drain or kerb with it. We will visit and price it.

Request a quote External works

Replies are sent by WhatsApp. Every message to info@peterch.org is read — include a working number and we will come back to you the same working day.