Concrete Cantilever Retaining Wall Design Example

Cantilever retaining walls can be precast in a factory or formed on site and considered economical up to about 25 ft in height. Design the reinforced concrete masonry cantilever retaining wall shown in figure 2. Forces on retaining walls 6.

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The wall will be built adjacent to the roadway shoulder where traffic is 2 ft.

Concrete cantilever retaining wall design example.

Counterfort retaining walls 12. Soil mechanics simplified 4. Design procedure overview 3. 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.

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. 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. Ce 437 537 spring 2011 retaining wall design example 3 8 3.

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

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. 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. From the barrier face.

Design stem t stem as stem. Soil bearing and stability 8. The stem is a vertical cantilever beam acted on by the horizontal earth pressure. Designing the cantilever wall stem 9.

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. Design stem tstem asstem. Cantilever concrete retaining walls are commonly used for residential purposes often as integral basement walls. 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.

The stem is a vertical cantilever beam acted on by the horizontal earth pressure. Assume level backfill no surcharge or seismic loading active earth pressure and. Pier and pile foundations 11. Usually the cantilever wall stem is of concrete block construction rising from an in situ concrete foundation.

Assuming that the allowable bearing pressure of the soil is 120 knm 2 the. Ce 537 spring 2011 retaining wall design example 3 8 3. The following worked example is for a free standing cantilever wall that is considered.

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