Cantilever Retaining Wall Reinforcement Design

The stem may have constant thickness along the length or may be tapered based on economic and construction criteria.

Cantilever retaining wall reinforcement design.

For preliminary design considerations the length of heel slab is taken as h k a 3 as according to pillai and menon reinforced concrete design 2011. 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. 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. Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider.

It is extensively used in variety of situations such as highway engineering railway engineering bridge engineering and irrigation engineering. Recommended stem designs for reinforced cantilever retaining walls with no surcharge are contained in tables 1 and 2 for allowable stress design and strength design respectively. 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 wall retains earth when level difference exists between two surfaces.

Cantilever retaining wall is the most common type of earth retaining structure. Assuming that the allowable bearing pressure of the soil is 120 knm 2 the. Geometric design variables were chosen with reference to geometry of the wall and structural design variables were modelled concerning to the critical sections of the wall. These design methods are discussed in detail in allowable stress design of concrete masonry tek 14 7a and strength design of concrete masonry tek 14 4a refs.

Cantilever retaining wall are usually of reinforced concrete and work on the principles of leverage. A gravity wall h 3m masonry or stone b cantilever wall h 3m and h 6m c counterfort wall h 8m d buttress wall transverse stem support provided on front side e e bridge abutment additional horizontal restraint from bridge deck a gravity wall h 3m masonry or stone. There are eight geometric and four structural design variables for the reinforcement concrete cantilever retaining wall with the shear key as shown in fig. It is the length from face of the wall stem to rear end of the base slab which includes the thickness of stem.

The base is divided into two parts the heel and toe. A retaining wall is one of the most important types of retaining structures.