In our Landscapers - Technical Guide we look at site clearance, grading and more.
LANDSCAPE SEED MIXTURES
This work will involve site clearance, minor and major upgrading, subsoil cultivation, drainage, general cultivation, blade grading, seed-bed preparation, turfing and/or seeding.
All long grass and other surface debris should be either burned or otherwise disposed of and removed from the site.
All obstructions within the site boundaries such as trees, shrubs and hedges should be removed and disposed of responsibly.
Any heavy foundation, such as roadways and other similar obstructions, should also be cleared at this time and removed.
The site should be ploughed to the depth of the topsoil taking great care not to contaminate this with the subsoil.
The soil should then be broken down.
Produce suitable levels by grading the entire surface transferring topsoil in grade boxes or by blades to produce a surface which is friable, free from marked mounds or depressions.
An absolute minimum depth of 100mm, firmed true topsoil should be left covering the whole site on completion.
The above grading operation would be appropriate for sites whose topsoil depth and contours are reasonable. Major subsoil grading does frequently have to occur when sites are re-contoured prior to achieving the required levels.
For this operation, the topsoil should be carefully stripped avoiding all contamination with subsoil, stored separately in mounds not greater than 1m high prior to subsoil re-contouring.
Only after suitable subsoil levels have been achieved, and allowing for settlement and drainage, should the topsoil be replaced and graded ready for seeding.