Retaining Wall Expansion Joint Detail

Although the details in figure 3 show vertical reinforcement on each side of the control joint walls that do not otherwise require vertical reinforcement will not require reinforcement at the control joints. Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together. When the dimension of the retaining walls is becoming significantly larger usually a construction joint with a shear key can not be provided.

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8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints.

Retaining wall expansion joint detail.

Chapter 9 liquid retaining structures p. When the construction joint continues through the base like in the water tank the water bar shall be continued throughout the base also. Vertical expansion joints are incorporated into the wall to account for expansion due to temperature changes. The joints permit free longitudinal movement and some also allow the transfer of lateral or out of plane shear loads.

Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on centers. Expansion joints should be located at intervals up to 90 feet. Chapter 10 mass concrete p.

Typical control joint detail figure 16. Construction joints in large retaining walls. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. These joints may be filled with flexible joint fillers.

Typical expansion joint detail backfill and drainage requirements. Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3.

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