Soil bearing and stability 8.
Reinforced concrete block retaining wall design.
Concrete block unit placement in retaining wall.
Strength reduced from 136 7 to 114 9 in kips.
The concrete block act as a protective facing to the wall and allow the reinforced earth wall be built safely.
Building codes and retaining walls 5.
Concrete block units should be installed properly in accordance with design documents and need to be plumbed.
Reinforced earth walls can be built to 15 20m high and is a very economical solution to high retaining walls.
Design procedure overview 3.
They are commonly h or double u configuration.
Check for buried utilities and other obstructions in the reinforced zone.
The addition of reinforcement to concrete masonry greatly increases the tensile strength and ductility of a wall providing higher load resistance.
Step 2 lay a run of masonry lathe down the entire course of the wall.
Concrete deadman driven into the ground or anchored into the earth with sufficient resistance.
11 2 joints in water retaining structures 11 3 reinforcement details 11 4 design methods 11 5 retaining walls 12 prestressed concrete 12 1 principles of prestressing 12 2 methods of prestressing 12 3 analysis of concrete seetion under working loads 12 4 design for the serviceability limit state 12 5 analysis and design at the ultimate limit.
The geo mat is attached to the blocks with galvanized steel fixing.
Retaining wall section 1 the geogrid reinforcement design will determine the depth of the reinforced zone and the excavation required.
They should be placed cells vertical and mortar need to be applied for all sides of the block both in horizontal and vertical directions.
Soil mechanics simplified 4.
In cantilever retaining walls the concrete base or footing holds the vertical masonry wall in position and resists overturning and sliding caused by lateral soil loading.
Geotextilea permeable polymeric material which may be woven non woven or knitted.
Concrete masonry unitsconcrete blocks manufactured to provide an attractive durable stable face to a retaining wall.
2 5 clear to strength steel 5 12 rather than the designed 5 10 bending strength of the section has been reduced by about 16.
On the fourth course trowel a skim very thin coat of mortar on the block.
Forces on retaining walls 6.
Before construction begins verify top of wall tw and bottom of wall bw locations.
Strength of reinforced concrete sections amount of rebar a s the project calls for 5 10 and 5 12 are used.
Lay your first four courses of concrete block wall.
Earthquake seismic design 7.