Expansion Joint Concrete Retaining Wall

Dik structural 1 apr 18 13 42 create contraction joints on the footing located exactly where the contraction joints of the stem are. The base and the wall is typically discharged. Details of this butt type con s t r uction joint are shown in figure 4.

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Change or is it a random selection of 100 80 90 ft.

Expansion joint concrete retaining wall.

Expansion joints are provided to allow th. 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. Expansion joints are provided in every large structure which is subjected to high variation in temperature during its lifetime.

They may be vertical and horizontal. This article emphases on need of expansion. The simplest vertical constru c t i o n joint is formed using a bulkhead b o a r d. Other constru c tion joints coincide with or function as contraction or expansion joints.

S t r uction joint restricts wall move ments and should be as strong as the wall without joints. Expansion joints are placed in concrete to prevent expansive cracks formed due to temperature change. This temperature variation causes expansion and contraction in the structure. Chapter 9 liquid retaining structures p.

Construction joints in retaining walls. Construction joints separate the work of the concrete being poured at different times. My question is do we need to calculate the spacing based on the expected temp. According to joints in concrete construction aci 2243r code manual movements in the wall can be expected up to 0 5 inches if we space the expansion joints at 100 ft o c.

Reinforced concrete retaining wall specifications for expansion joints. Typical control joint detail figure 16. Expansion joints are provided in slabs pavements buildings bridges sidewalks railway tracks piping systems ships and other structures. Concrete undergoes expansion due to high temperature when in a confined boundary which leads to cracks.

The main board construction for retaining walls is the horizontal joint between the footing and the wall shaft of the retaining wall. Chapter 10 mass concrete p. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. Typical expansion joint detail backfill and drainage requirements.

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