Lapping reinforcement
All forms of steel reinforcement must be lapped in accordance with AS 2870 requirements. The overlaps should be held together with tie wire.
![Three diagrams of trench mesh laps. In the first diagram the trench mesh overlaps at the ends (they need to be overlapped by at least 500 mm). The second diagram overlaps at L intersection and the third diagram overlaps at T intersection.](images/page_006a.gif)
Trench mesh laps
Where trench maps are joined end to end, they need to be overlapped by at least 500 mm. Where they overlap at T or L intersections the overlap should be the width of the trench mesh.
![Diagram of a square mesh lap.](images/page_006b.gif)
Square mesh lap
Square mesh lap has to be overlapped by at least 225 mm.
![Diagram of a reinforcing bar lap.](images/page_006c.gif)
Reinforcing bar lap
Reinforcing bar laps need to be overlapped by at least 500 mm.