General Installation Instructions
– Step 1
Preparation of the site
Prepare sewer pipe trench and bedding material as per the site plan and in accordance with local regulatory requirements.
– Step 2
Placing the Maintenance Shaft
Scallop out sufficient material at the base of the trench to accommodate the base of the Sewer Maintenance Shaft. Place SMS maintenance shaft into position in the trench ensuring sockets are at the same depth as the adjoining pipes.
– Step 3
Connecting the Downstream & Upstream Pipes
Connect downstream and upstream sewer pipes using the rubber ring joints and an appropriate bacterial lubricant. SMS shafts are designed for use with standard sized PVC Sewer Pipes. Ensure that the pit is level by placing a level across the top of the vertical riser.
– Step 4
Compact
Place and compact fine support material/sand around the base of the shaft to a minimum cover of 100mm.
– Step 5
Connecting the Vertical Riser
Prepare the PVC pipe riser and install as per the instructions on page 5.
– Step 6
Backfill
Complete backfill around the shaft and in the sewer pipe trench as per the site plan and in accordance with local regulatory requirements.
– Step 7
Installing the Access Cover
Cut the PVC pipe riser between 200mm and 300mm below the finished surface level and install the PVC end cap. Place the shroud over the pipe riser and install access cover and supports as per the instructions on page 6.