Concrete Retaining Wall Expansion Joint Detail

Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together.

Concrete retaining wall expansion joint detail.

9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. 1 the bridge office has. Chapter 10 mass concrete p. Expansion joints that allow completely independent movement between adjoining components are sometimes called isolation joints.

Concrete control joint detail. Since we know the cohesion of the concrete and the surface area of the joint resisting force can be calculated. 1 2 filler material. These joints may be filled with flexible joint fillers.

Due to the above reasons and many others several shear keys are provided over the cross sections. True expansion joints in cast in place walls are not common. Especially when the retaining walls is longer it can not be concrete at once and by a single pour. Backfill and drainage.

See clay and concrete masonry banding details tek 5 2a ref. Thus we can check the stability. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on. Figure 12 for timber retaining walls and figure 13 for masonry and concrete retaining walls.

Typical expansion joint detail backfill and drainage requirements. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints. Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. 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. Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. Typical control joint detail figure 16. 1 for more detailed information.

Backfill and drainage. Expansion joints should be located at intervals up to 90 feet. 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. Concrete expansion joint detail.

Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall. Chapter 9 liquid retaining structures p. Ment should not pass through wall expansion or isolation joints. Construction joints use construction joints when the c o n c r ete placement.