King post retaining wall costs
King post retaining wall costs are driven by the post centres and surcharge loads.
Post centres for retaining walls
The most economical post centre is between 2.5m and 3m. The more posts there are due to small post centres, the more augured holes are required and the total weight of the steel increases.
Surcharge loads project info
A high surcharge load increases the steel section and embedment depth. It pays to carry out a range of designs and analyse the cost to optimise it. The cost analysis is white simple using a bill of quantities spreadsheet. On large projects, the savings can be significant.
Typical retaining wall costs
A budget for a king post retaining wall is between £450 to £550 m2 for wall up to 3.5m
King post retaining wall over 3.5m become costly as the loads become significant, the post centres need to be reduced and the section sizes increase considerably.
The true cost can only be calculated from a design.
King post retaining wall costs and planning
Cost planning is essential to ensure you get the best value and do not waste money.
Quantity surveying is measuring construction work for cost planning and cost control.
The more you can buy within your budget, the more you can do. The method we use in construction is to develop a priced bill of quantities.
How to calculate how much retaining wall I need?
A bill of quantities breaks down the costs into elements that can be controlled. Rates are built up using labour, plant, and materials. This allows you to manage each cost base.
You can take the labour element and break it down into weeks, days, and hours of work.
The image in the video shows a typical bill of quantities for a king post retaining wall and the built-up rates in the analysis section.
Good cost planning is critical to a successful project. On large projects, you value the work compete before paying your contractor. In the past, we have seen clients overpaying clients and getting into all sorts of trouble.
Learn more
- About king post retaining walls
- King post retaining wall design
- King post panels
- King post projet management and procurement
- King post case study with costs
- Author:
- Bob Evans
- Job Title:
- Founder
- Company:
- Retaining Wall Solutions
- Last updated:
- May 18, 2023, 8:23 pm
