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Expansion joint concrete retaining wall. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints. Typical expansion joint detail backfill and drainage requirements. S t r uction joint restricts wall move ments and should be as strong as the wall without joints.
Change or is it a random selection of 100 80 90 ft. 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. Chapter 9 liquid retaining structures p. Construction joints separate the work of the concrete being poured at different times.
Typical control joint detail figure 16. Chapter 10 mass concrete p. Construction joints in retaining walls. Details of this butt type con s t r uction joint are shown in figure 4.
My question is do we need to calculate the spacing based on the expected temp. The simplest vertical constru c t i o n joint is formed using a bulkhead b o a r d. This article emphases on need of expansion. Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength.
Expansion joints are provided in slabs pavements buildings bridges sidewalks railway tracks piping systems ships and other structures. This temperature variation causes expansion and contraction in the structure. The base and the wall is typically discharged. Concrete undergoes expansion due to high temperature when in a confined boundary which leads to cracks.
Other constru c tion joints coincide with or function as contraction or expansion joints. 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. Expansion joints are provided to allow th.
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