Concrete Retaining Wall Expansion Joint Detail

These joints may be filled with flexible joint fillers.

Concrete retaining wall expansion joint detail. Concrete control joint detail. Backfill and drainage. 1 for more detailed information. Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall.

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. Construction joints separate adjacent placements of concrete to make large pours manageable. 1 2 filler material. Especially when the retaining walls is longer it can not be concrete at once and by a single pour.

Backfill and drainage. Chapter 9 liquid retaining structures p. Vertical expansion joints are incorporated into the wall to account for expansion due to temperature changes. Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together.

9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. Expansion joints that allow completely independent movement between adjoining components are sometimes called isolation joints. Typical expansion joint detail backfill and drainage requirements. Ment should not pass through wall expansion or isolation joints.

Chapter 10 mass concrete p. Concrete expansion joint detail. Figure 12 for timber retaining walls and figure 13 for masonry and concrete retaining walls. True expansion joints in cast in place walls are not common.

Since we know the cohesion of the concrete and the surface area of the joint resisting force can be calculated. Thus we can check the stability. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints. Typical control joint detail figure 16.

Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. Backfill and drainage requirements shall be in accordance with. See clay and concrete masonry banding details tek 5 2a ref. Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength.

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. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on. Retaining walls and traffic barrier details for reinforced concrete retaining walls are. Due to the above reasons and many others several shear keys are provided over the cross sections.