Concrete Retaining Wall Expansion Joint Detail

Ment should not pass through wall expansion or isolation joints.

Concrete retaining wall expansion joint detail.

Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. 1 the bridge office has. Chapter 9 liquid retaining structures p. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints.

Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together. 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. 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.

Figure 12 for timber retaining walls and figure 13 for masonry and concrete retaining walls. Vertical expansion joints are incorporated into the wall to account for expansion due to temperature changes. Due to the above reasons and many others several shear keys are provided over the cross sections. Concrete control joint detail.

Construction joints separate adjacent placements of concrete to make large pours manageable. Chapter 10 mass concrete p. Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall. 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. Retaining walls and traffic barrier details for reinforced concrete retaining walls are. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints.

Expansion joints should be located at intervals up to 90 feet. Typical control joint detail figure 16. 1 for more detailed information. Construction joints use construction joints when the c o n c r ete placement.

1 2 filler material. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on. Expansion joints that allow completely independent movement between adjoining components are sometimes called isolation joints. Backfill and drainage.

Concrete expansion joint detail. See clay and concrete masonry banding details tek 5 2a ref. Typical expansion joint detail backfill and drainage requirements. Backfill and drainage.