Concrete Retaining Wall Expansion Joint Detail

Backfill and drainage requirements shall be in accordance with.

Concrete retaining wall expansion joint detail.

Ment should not pass through wall expansion or isolation joints. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall.

Construction joints use construction joints when the c o n c r ete placement. Chapter 9 liquid retaining structures p. 1 the bridge office has. Due to the above reasons and many others several shear keys are provided over the cross sections.

Thus we can check the stability. Since we know the cohesion of the concrete and the surface area of the joint resisting force can be calculated. These joints may be filled with flexible joint fillers. Typical expansion joint detail backfill and drainage requirements.

Retaining walls and traffic barrier details for reinforced concrete retaining walls are. 1 2 filler material. 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.

Typical control joint detail figure 16. Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. Especially when the retaining walls is longer it can not be concrete at once and by a single pour. True expansion joints in cast in place walls are not common.

Chapter 10 mass concrete p. Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. Concrete control joint detail. 1 for more detailed information.

Expansion joints should be located at intervals up to 90 feet. Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together. Expansion joints that allow completely independent movement between adjoining components are sometimes called isolation joints. 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. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on. Backfill and drainage. Backfill and drainage.