Retaining wall retains earth when level difference exists between two surfaces.
Cantilever retaining wall reinforcement design.
It is extensively used in variety of situations such as highway engineering railway engineering bridge engineering and irrigation engineering.
A retaining wall is one of the most important types of retaining structures.
It has much thinner stem and utilize the weight of the backfill soil to provide most of the resistance to sliding and overturning.
There are eight geometric and four structural design variables for the reinforcement concrete cantilever retaining wall with the shear key as shown in fig.
The base is divided into two parts the heel and toe.
Based on our example in figure a 1 we have the forces due to soil pressure due to water and surcharge load to consider.
Assuming that the allowable bearing pressure of the soil is 120 knm 2 the.
It is the length from face of the wall stem to rear end of the base slab which includes the thickness of stem.
Cantilever retaining wall is the most common type of earth retaining structure.
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.
The stem may have constant thickness along the length or may be tapered based on economic and construction criteria.
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.
It is constructed of reinforced portland cement hellip.
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.
Rw01 concrete masonry reinforced cantilever retaining walls edition e3 may 2013 isbn 0 909407 56 8.
Cantilever retaining wall are usually of reinforced concrete and work on the principles of leverage.
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.
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.