What is Counterfort wall?

A counterfort retaining wall is a cantilever wall with counterforts, or buttresses, attached to the inside face of the wall to further resist lateral thrust. Some common materials used for retaining walls are treated lumber, concrete block systems, poured concrete, stone, and brick.

Why do we need a Counterfort retaining wall?

Counterfort Retaining Walls

The counterforts tie the slab and base together, and the purpose of them is to reduce the shear forces and bending moments imposed on the wall by the soil. A secondary effect is to increase the weight of the wall from the added concrete.

What is the difference between Counterfort and buttress retaining wall?

When the triangular beams are placed on the front side of the retaining wall, instead of on the backfill side under certain situations, the retaining wall is known as buttressed retaining wall, and the triangular beams are known as buttresses, instead of counterforts.

What is the difference between cantilever retaining wall and Counterfort retaining wall?

Cantilever does not required any support. Counter fort are provided as support. Economical below 6-7 m height. Economical above 7 m high.

Where are Counterfort retaining wall used?

A counterfort retaining wall is a cantilever wall with counterforts, or buttresses, attached to the inside face of the wall to further resist lateral thrust. Some common materials used for retaining walls are treated lumber, concrete block systems, poured concrete, stone, and brick.

How to build retaining wall || Counterfort retaining wall reinforcements step by step 3d animation

How does the main Counterfort wall is design?

Counterfort retaining wall is those retaining wall which withstands all the lateral forces by its flexural action rather than its weight. So such wall has a broad base foundation, vertical stem reinforced with bar and supported by thin transverse slabs called Counterfort placed at regular intervals.

What are the advantages of counterfort retaining walls over cantilever walls?

Advantages of Counterfort Retaining Wall:

This wall reduces the bending moment and supports the hell slab. By weight of the earth and by self-weight, stability is maintained. From 6m to 8m, this wall height ranges. These walls are more widely used because it is hidden beneath the retained materials.

What are the three types of retaining walls?

The three main types of retaining walls are concrete, and masonry or stone. The materials you choose will depend on the location of the wall, the aesthetic qualities you prefer, and how long you expect the wall to last. A retaining wall is used to contain soil and hold it in place in areas where a slope is present.

What is the structural action between cantilever and counterfort type retaining wall?

In cantilever retaining wall the pressure and other forces are withstand by the stem of the retaining wall and base slab. In counterfort retaining wall is provided the height of retaining wall is more than 6m. the walls also provided perpendicular to stem wall. The counterfort act as support to stem and heel slab.

What is cantilever walls?

Cantilever walls are built using reinforced concrete, with an L-shaped, or inverted T-shaped, foundation. The vertical stress behind the wall is transferred onto the foundation, preventing toppling due to lateral earth pressure from the same soil mass.

What is buttress retaining wall?

Buttress wall: A buttress wall is similar to a counterfort wall except that transverse walls are located on the side of the vertical wall opposite to the retained material and act as compression struts.

What are types of retaining wall?

How does a Counterfort retaining wall work?

The counterforts tie the base slab and wall stem together and they act as tension bracing which strengthen the connection between wall and base slab. The counterforts help to reduce bending moment and shear forces induced by soil pressure to the retaining wall.

What are the components of Counterfort type retaining wall and explain briefly?

Counterfort retaining wall consists of a stem, toe slab and heel slab as in case of cantilever retaining wall. But it also consists of counterforts are regular interval which divides the stem. The stem with combination of counterfort behaves like a tee-beam with varying width.

What is the function of re wall?

Prevent Erosion

As previously stated, one of the main purposes of a retaining wall is to hold back soil. If the soil slopes downward, it could easily create erosion in the area. Retaining walls can also be used to hold back water.

What is the strongest type of wall?

The Different Types Of Masonry Walls

The strongest part of any building or any structure for that matter would be the masonry walls. As they provide strength and durability to any structure, and at the same time they help in controlling the temperature indoors and out.

What is meaning of retaining wall?

: a wall that is built to keep the land behind it from sliding.

What is purpose of retaining wall?

Retaining walls are often found in places where extra support is needed to prevent the earth from moving downhill with erosion. The most basic function of a retaining wall is to battle gravity; the lateral force of the slope must be offset in the retaining wall's design. Retaining walls can also: Provide usable land.

What is revetment wall?

Revetment walls are permanent structures located along the canal frontage of land. Revetment walls prevent subsidence of the land into the canal and protect it from erosion caused by the canal system's tidal waters and boat wash.

What is the maximum height for cantilever retaining wall?

Cantilever retaining walls are found best up to a height of 6m. For greater heights earth pressure due to retained fill will be higher due to lever arm effect, higher moments are produced at base, which leads to higher section for stability design as well as structural design. This proves to be an uneconomical design.

Why weep holes are provided in retaining wall?

Weep holes allow water to escape from behind the wall. These holes should be regularly spaced in the horizontal direction. Retaining walls with a height greater than a few feet should also have weep holes that are regularly spaced in the vertical direction, forming a grid pattern.

What is front and back Counterfort?

Counterforts are firmly attached to the face slab as well as the base slab; The earth pressure acting on the face slab is transferred to the counter forts which deflect as vertical cantilevers. The back of the rear counter forts comes in tension and their front face is under compression.

What is sheet pile wall?

Sheet Piling is used to provide temporary and permanent walls in the construction industry. Sheet piling is used as excavation support and for soil retention. It creates a border which keeps the soil back, away from the structure.

What is a crib wall?

Crib walls are formed from interlocking precast units (parallel to and at right angles to the line of the wall) that are built up to form a series of hollow boxes. The boxes are filled with selected granular material to form a retaining wall.