Concrete Retaining Wall Expansion Joint Detail

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Concrete retaining wall expansion joint detail.

Since we know the cohesion of the concrete and the surface area of the joint resisting force can be calculated. 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. Concrete expansion joint detail.

These joints may be filled with flexible joint fillers. Retaining walls and traffic barrier details for reinforced concrete retaining walls are. Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. 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. Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. True expansion joints in cast in place walls are not common. 1 for more detailed information.

Backfill and drainage. See clay and concrete masonry banding details tek 5 2a ref. Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall. 1 2 filler material.

Construction joints use construction joints when the c o n c r ete placement. Chapter 9 liquid retaining structures p. Backfill and drainage. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on.

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. Typical expansion joint detail backfill and drainage requirements. Thus we can check the stability.

Construction joints separate adjacent placements of concrete to make large pours manageable. 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. Especially when the retaining walls is longer it can not be concrete at once and by a single pour. Typical control joint detail figure 16.

Ment should not pass through wall expansion or isolation joints. Backfill and drainage requirements shall be in accordance with. Chapter 10 mass concrete p. 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.