Gravity Retaining Wall Design Example

For a detailed discussion of design and analysis parameters the design manual for segmental retaining walls ref.

Gravity retaining wall design example.

Pre sented in tabular form the designs are for wall heights. The top width of the stem should be not less. 14 1 1 wall development process. F c 3000 psi fy 60 ksi natural soil development of structural design equations.

1 should be consulted. Gravity walls generally are trapezoidal in shape but also may be built with broken backs. Segmental retaining walls 17. Restrained non yielding walls 20.

Flexural and shear stresses in gravity retaining walls will almost always be of minor importance. 8 3 2 1 gravity retaining walls gravity wall dimensions may be taken as shown in fig 8 3 a. How retaining walls fail. Every retaining wall supports a wedge of soil.

Walls formed from interlocking concrete blocks are designed as gravity walls defined in bs 8002 2015 as follows. Swimming pool walls 18. Cantilevered tilt up walls 13. Flexural and shear stresses are checked in the second design example and it is seen that the magnitudes are very low.

Soldier pile walls 22. Ce 437 537 spring 2011 retaining wall design example 1 8 design a reinforced concrete retaining wall for the following conditions. Gravity retaining walls are earth retaining structures that depend primarily on their own self weight and that of any enclosed material to support the retained ground and any structures or loads placed upon it. Although wall heights up to 8 ft 2 44 m for conventional gravity walls and 14 ft 4 28 m for soil reinforced walls are presented properly engineered walls can exceed these heights.

Retaining walls such as mse walls with precast concrete panel facing that are susceptible to damage from vehicular impact shall be protected by a roadway barrier. Weight of the concrete in a gravity wall pro vides stability against overturning. Two equations are developed. 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. Sheet pile walls 21. The base and other dimensions should be such that the resultant falls within the middle one third of the base. T i l e v er walls.

In this example the structural design of the three retaining wall components is performed by hand. Gravity retaining wall design can be greatly simplified t h r ough the use of a series of sample designs deve l o p e d recently by the po r tland cement association pca. 6 foot 1 8 m high gravity retaining wall equivalent fluid pressure of soil 40 pcf 7 1 kn m soil weight 100 pcf 15 7 kn. Wood retaining walls 14.

Setback sliding wedge. The wedge is defined as the soil which extends beyond the failure.