When backfilling concrete sleeper retainer walls ensure you do not push dirt into the back of the wall with heavy machinery otherwise you can create excess compaction and deform the shape of the wall.
Always use polythene black plastic at the rear of the wall
Place AGI drainpipe at the base of the wall and back fill with 20mm stone for drainage.
IMPORTANT
Before installing Retainer Wall Posts sleepers must be measured to ensure the correct spacing. Please discuss with your supplier.