The example wall is shown in figure x 2.
Concrete cantilever retaining wall design example.
Design stem tstem asstem.
Conditions and wall geometry n a design example which demonstrates the use of the australian standard and analysis method n analysis of cohesive soils.
Software such as mathcad or excel will be useful for design iterations.
Assume level backfill no surcharge or seismic loading active earth pressure and masonry laid in running bond.
Concrete cantilever wall example.
E 10 0 2 3 86 ft.
Soil bearing capacity q all.
The following design assumptions were made.
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.
Unit weight of concrete ɣ c.
X σ m v σ m h σ v 101 50 49 38 17 12 ft.
The coefficient of friction between the footing and foundation soil k 1 is 0 25 and the allowable soil bearing pressure.
Assuming that the allowable bearing pressure of the soil is 120 knm 2 the coefþcient of friction is 0 4 and the unit weight of reinforced concrete is 24 knm 3 1.
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 537 spring 2011 retaining wall design example 3 8 3.
Unit weight of water ɣ w.
1 2 example wall.
C 0 φ 30 degrees.
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.
Aashto 10 6 3 3 strength ia.
Ce 437 537 spring 2011 retaining wall design example 3 8 3.
Example 11 cast in place concrete cantilever retaining wall 6 2020 eccentricity overturning check maximum eccentricity limit.
Figure a 1 retaining wall cross section.
Port hills loess strength parameters.
E actual e max extreme iia.
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.
30 unit weight of soil ɣ s.
The stem is a vertical cantilever beam acted on by the horizontal earth pressure.
The stem is a vertical cantilever beam acted on by the horizontal earth pressure.
E max b 3 ft.
Design the reinforced concrete masonry cantilever retaining wall shown in figure 2.
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.
The example calculations are made here using mathcad.
Coefficient of soil friction ф.
Design stem t stem as stem.
Cantilever retaining walls can be precast in a factory or formed on site and considered economical up to about 25 ft in height.
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.