SABdrain trench drainage system installation is a fast & easy process thanks to our click clack channels. For the highest strength performance, it is imperative that the channel & grate are installed correctly. If installed incorrectly, there is a risk the channel & grate will collapse.
Excavation & Concrete Base
SABdrain trench drainage systems use an M type channel and thus requires the strengthening of concrete to support loads of vertical and horizontal thrust. In creating a concrete haunch to lock the channel, it enables it to meet the required load rating as specified in AS4058-2006.
Excavation Design
The size of the trench will need to take into account the dimension & rating of the channel to determine the depth & width (see table below). The trench should be excavated from the lowest point of discharge to the highest point. The base should be compacted well, particularly if the ground is soft.
Concrete Base
Lay the concrete base to the recommended thickess as specified in the table below, using a minimum strength of 25 MPA. Allow enough gradient in the base for water drainage.
Trench Drainage System Installation
Assemble the channels including fixing the grates to the channels and position inside the trench starting from the lowest point of discharge ensuring that each channel unit is locked securely together and aligned. Place concrete along the sizes of the channel making sure that its worked into the ribbing along the base as well as sides, paying particular attention to the grate support edge.
We highly recommend the vibrating & compacting of the cement
Assembly of channel
Assemble your channels to your desired length, install grates. Slide in end caps & connect any pipes you may be using.
Assembly Of Grates
Insert metal edged (supplied with edgeless channels). Assemble grates & lockdown. Screw & tighten bolts to secure grates and lockdown pieces, ensuring not to tighten screws too much to prevent snapping.
Final Steps for installation of SABdrain trench drainage system
Widen anchors to an inclination of 45 degrees from the channel.
Creating a Corner/90 degree angle/tees/cross/bends
SAB trench drainage channels have preset lateral connections for 90 degree joining of 2 channel units together. This allows for right angles, corners, tees & crosses to be created without any additional fittings.