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Installation Guide

Installation Guide Page 1

Installation Is As Easy As 1-2-3


SABdrain Tip: To keep grates clear of concrete during installation, flip them upside down in the channel and turn back around once concreting is complete. Or, install a temporary timber grate whilst concreting.
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Step 1

1. Excavation Design

The size of the trench will need to take into account the dimension and rating of the channel in determining the depth and width of the trench (See Table). 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.
Step 2

2. Concrete Base

Lay the concrete base to the recommended thickness as specified in table 2.10 using a minimum strength of 20 MPA. Allow enough gradient in the base for water drainage.
Step 3

3. Channel 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 sides of the channel making sure that it worked into the ribbing along the base as well as sides paying particular to the grate support edge.
Load ClassClass AClass BClass CClass DClass EClass FClass G
Concrete bed size (H)80mm100mm150mm150mm200mm200mm200mm
Concrete lateral backfill size (L)100mm100mm150mm150mm200mm200mm200mm

Creating a Corner/90 Degree Angle/Tees/Cross/Bends

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Angle 300x400 1For Website 300x400 1
Corner 1024x662

SAB channels have preset lateral connection for 90 degree joining of 2 channel units together. Allows right angles, corners, tees & crosses without any additional fittings.

Cut out the highlighted section above & join the channels.

Click-Clack Channels

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Assembly of Grates

Install metal edges if required. Assemble grates & lockdown. Screw and tighten bolts to secure grates and lockdown pieces, ensuring not to tighten screws too much to prevent snapping. Widen anchors to an inclination of 45 degrees from the channnel. It is extremely important to concrete with grates inside the channel to prevent bowing. It will be impossible to install grates after concrete has set.