Expansion Joint Concrete Retaining Wall

Expansion joints are provided in slabs pavements buildings bridges sidewalks railway tracks piping systems ships and other structures.

Expansion joint concrete retaining wall.

Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength. 9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints. The main board construction for retaining walls is the horizontal joint between the footing and the wall shaft of the retaining wall. Change or is it a random selection of 100 80 90 ft.

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. Construction joints separate the work of the concrete being poured at different times. This temperature variation causes expansion and contraction in the structure.

They may be vertical and horizontal. Typical control joint detail figure 16. Chapter 10 mass concrete p. 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints.

Concrete undergoes expansion due to high temperature when in a confined boundary which leads to cracks. Expansion joints are provided to allow th. Expansion joints are placed in concrete to prevent expansive cracks formed due to temperature change. Dik structural 1 apr 18 13 42 create contraction joints on the footing located exactly where the contraction joints of the stem are.

Details of this butt type con s t r uction joint are shown in figure 4. The base and the wall is typically discharged. Expansion joints are provided in every large structure which is subjected to high variation in temperature during its lifetime. Other constru c tion joints coincide with or function as contraction or expansion joints.

Construction joints in retaining walls. Typical expansion joint detail backfill and drainage requirements. 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.