3500 psi concrete 5 10.
Concrete retaining wall calculation example.
Shear strength reduced from 7654 lbs to 6589 lbs.
The stem may have constant thickness along the length or may be tapered based on economic and construction criteria.
F c 3000 psi fy 60 ksi.
Building codes and retaining walls 5.
The wall is assumed to be located in the christchurch port hills.
The length of the foundation is 10mtr.
Bending strengthof the section has been reduced by about 15 shear strengthat wall base has been reduced by about 14.
Design a reinforced concrete retaining wall for the following conditions.
Soil mechanics simplified 4.
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.
C 0 φ 30 degrees.
Design procedure overview 3.
The base is divided into two parts the heel and toe.
Three basic equations will be used to develop an equation for d.
1 2 example wall.
Equation to calculate effective depth d.
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.
1 1 0 003 0 003 0 003 0 003.
Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance.
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.
3 clear rather than the designed 2 clear.
Soil bearing and stability 8.
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.
The example wall is shown in figure x 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.
Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider.
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.
Foundation engineering chapter 8.
0 85 2 0 85 1 2 2 β ε ε β φ φ.
Assuming that the allowable bearing pressure of the soil is 120 knm 2 the.
The retaining wall is constructed on the foundation known as the raft foundation.
In this example the structural design of the three retaining wall components is performed by hand.
Earthquake seismic design 7.
Software such as mathcad or excel will be useful for design iterations.
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.
In this example the structural design of the three retaining wall components is performed by hand.
Development of structural design equations.
Forces on retaining walls 6.
The example calculations are made here using mathcad.
Strength reduced from 136 7 to 116 8 in kips.