Concrete Retaining Wall Expansion Joint Detail

Backfill and drainage.

Concrete retaining wall expansion joint detail.

These joints may be filled with flexible joint fillers. Figure 12 for timber retaining walls and figure 13 for masonry and concrete retaining walls. Due to the above reasons and many others several shear keys are provided over the cross sections. Thus we can check the stability.

Expansion joints that allow completely independent movement between adjoining components are sometimes called isolation joints. See clay and concrete masonry banding details tek 5 2a ref. Control joints are typically required in exposed above grade concrete masonry walls where net aesthetic shrinkage cracking may detract from the appearance of the wall and to limit moisture or air infiltration. Typical control joint detail figure 16.

Backfill and drainage requirements shall be in accordance with. Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall. Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together.

True expansion joints in cast in place walls are not common. Chapter 9 liquid retaining structures p. 1 2 filler material. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints.

Since we know the cohesion of the concrete and the surface area of the joint resisting force can be calculated. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on. Ment should not pass through wall expansion or isolation joints. Retaining walls and traffic barrier details for reinforced concrete retaining walls are.

Expansion joints should be located at intervals up to 90 feet. 1 for more detailed information. Construction joints use construction joints when the c o n c r ete placement. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints.

Typical expansion joint detail backfill and drainage requirements. If plans call for expansion joints verify the type of joint intended and execute the details carefully so the joint works pro p e r l y. Vertical expansion joints are incorporated into the wall to account for expansion due to temperature changes. Especially when the retaining walls is longer it can not be concrete at once and by a single pour.

Concrete control joint detail. Chapter 10 mass concrete p. Backfill and drainage. 1 the bridge office has.