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I'm putting two 21' long walls down a slope, about 1m high, separated by steps 1m wide. It's "sort of" retaining in as much as there will be 4ft height of soil behind it, but in reality the soil has been there and stable with no retention for the last 70+ years!
However - I'd like to be on the safe side so I've dug out 18" x 18" footings, stepping down the slope 18" every 3'. the walls are "S" shaped. I'm going to build the walls in 9" hollow block and stick rebar in before concreting, then face the walls with stone.
2 questions:
Firstly, what's the easiest way to shutter the footings given the curvature (radius of curves is around 3m for the majority, tightening to a radius of just 1m at the bottom of the "S". I only need to shutter the facing edges to a height above ground of around 9 inches (steps going in between walls will be at this height)
Secondly - Do I need to add rebar into the footings to stick into the lower course of blocks, or am I really going overkill here?!
In fact, am I going overkill full stop? Total distance from top of slope to bottom is 21' with a drop of 10'. Gradient must therefore be around 25 deg?
However - I'd like to be on the safe side so I've dug out 18" x 18" footings, stepping down the slope 18" every 3'. the walls are "S" shaped. I'm going to build the walls in 9" hollow block and stick rebar in before concreting, then face the walls with stone.
2 questions:
Firstly, what's the easiest way to shutter the footings given the curvature (radius of curves is around 3m for the majority, tightening to a radius of just 1m at the bottom of the "S". I only need to shutter the facing edges to a height above ground of around 9 inches (steps going in between walls will be at this height)
Secondly - Do I need to add rebar into the footings to stick into the lower course of blocks, or am I really going overkill here?!
In fact, am I going overkill full stop? Total distance from top of slope to bottom is 21' with a drop of 10'. Gradient must therefore be around 25 deg?