In this example the structural design of the three retaining wall components is performed by hand.
Concrete retaining wall calculation example.
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.
The length of the foundation is 10mtr.
Two equations are developed in this section for determining the thickness reinforcement required to resist the bending moment in the retaining wall components stem toe and heel.
Assuming that the allowable bearing pressure of the soil is 120 knm 2 the.
3 clear rather than the designed 2 clear.
In this example the structural design of the three retaining wall components is performed by hand.
Design procedure overview 3.
The wall is assumed to be located in the christchurch port hills.
Two equations are developed in this section for determining the thickness reinforcement required to resist the bending moment in the retaining wall components stem toe and heel.
Concrete cantilever wall example.
Software such as mathcad or excel will be useful for design iterations.
The example wall is shown in figure x 2.
Shear strength reduced from 7654 lbs to 6589 lbs.
Equation to calculate effective depth d.
Three basic equations will be used to develop an equation for d.
Soil mechanics simplified 4.
Design and analysis of retaining walls 3 f crib walls or coffer dams are cells or units to be filled with soil or built up members of pieces of precast concrete or metal and are supported by anchor pieces embedded in the soil for.
F c 3000 psi fy 60 ksi.
Forces on retaining walls 6.
Port hills loess strength parameters.
Bending strengthof the section has been reduced by about 15 shear strengthat wall base has been reduced by about 14.
The stem may have constant thickness along the length or may be tapered based on economic and construction criteria.
1 2 example wall.
Design a reinforced concrete retaining wall for the following conditions.
3500 psi concrete 5 10.
0 85 2 0 85 1 2 2 β ε ε β φ φ.
C 0 φ 30 degrees.
Soil bearing and stability 8.
Reinforced concrete cantilever retaining wall analysis and design aci 318 14 reinforced concrete cantilever retaining walls consist of a relatively thin stem and a base slab.
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.
Development of structural design equations.
Ce 537 spring 2011 retaining wall design example1 8.
Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider.
Strength reduced from 136 7 to 116 8 in kips.
The example calculations are made here using mathcad.
Foundation engineering chapter 8.
The following design assumptions were made.
Earthquake seismic design 7.
The base is divided into two parts the heel and toe.
Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance.
Calculation of volume of concrete in retaining wall as we can see that the height of the retaining wall is 5 mtr or 5000 mm.