Concrete Cantilever Retaining Wall Design Example

Design procedure overview 3.

Concrete cantilever retaining wall design example.

2 31 3 behaviour of reinforced concrete masonry cantilever retaining walls 1 4 importance of a geotechnical report 1 5 safety and protection of existing structures. Soil mechanics simplified 4. Cantilever retaining walls can be precast in a factory or formed on site and considered economical up to about 25 ft in height. Design stem t stem as stem.

Ft ft ft lb sur a sur ft ft lb fill o o a ft fill a p k q h psf p pcf k p k h h out of page 1 0 31 400 16 67 1 2070 0 31 100 16 67 1 4310 2 1 0 31 1. From the barrier face. Ce 537 spring 2011 retaining wall design example 3 8 3. Soil bearing and stability 8.

The following worked example is for a free standing cantilever wall that is considered. Usually the cantilever wall stem is of concrete block construction rising from an in situ concrete foundation. Building codes and retaining walls 5. Retaining walls example 3 16 design of a cantilever retaining wall bs 8 110 the cantilever retaining wall shown below is backþlled with granular material having a unit weight of 19 knm 3 and an internal angle of friction of 30.

Design the reinforced concrete masonry cantilever retaining wall shown in figure 2. Sketches of the retaining wall forces should be considered to properly distinguish the different forces acting on our retaining wall as tackled in the previous article retaining wall. Ft ft ft lb sur a sur ft ft lb fill o o a ft fill a p k q h psf p pcf k p k h h out of page 1 0 31 400 16 67 1 2070 0 31 100 16 67 1 4310 2. Ce 437 537 spring 2011 retaining wall design example 3 8 3.

Conditions and wall geometry n a design example which demonstrates the use of the australian standard and analysis method n analysis of cohesive soils. Counterfort retaining walls 12. Earthquake seismic design 7. Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider.

The wall will be built adjacent to the roadway shoulder where traffic is 2 ft. The following design example briefly illustrates some of the basic steps used in the allowable stress design of a reinforced concrete masonry cantilever retaining wall. Cantilever concrete retaining walls are commonly used for residential purposes often as integral basement walls. Assuming that the allowable bearing pressure of the soil is 120 knm 2 the.

Assume level backfill no surcharge or seismic loading active earth pressure and. Designing the cantilever wall stem 9. The wall stem is 1 6 wide to accommodate mounting a type 7 bridge rail to the top of wall. Example statement the retaining wall supports 15 0 of level roadway embankment measured from top of wall to top of footing.

The stem is a vertical cantilever beam acted on by the horizontal earth pressure. Forces on retaining walls 6. This design example focuses on the analysis and design of a tapered cantilever retaining wall including a comparison with model results from the engineering software programs spwall and spmats.