Concrete Wall Expansion Joint Detail

8 1 introduction 8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints.

Concrete wall expansion joint detail.

True expansion joints in cast in place walls are not common. Concrete joints are used to compensate when concrete expands or shrinks with changes in temperature. 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. Dwf files where available are under specific product joint sizes.

The hight shear force is applied at the horizontal construction joints located at the lower level. There is a special check to be done at the construction joints when larger retaining walls or structures having very high lateral loads are designed. Expansion joints are provided in slabs pavements buildings bridges sidewalks railway tracks piping systems ships and other structures. This article emphases on need of expansion.

Expansion is a function of length. Expansion joint and sealant cad details are provided here in quick view gif as well as dwg and pdf files. The concrete is subjected to volume change due to many reasons. In addition emseal is adding 3 d dwf files created in autocad inventor on a regular basis.

So we have to cater for this by way of joint to relieve the stress. The pre planned cracks will provide a better finish concrete product and will be formed in specific locations where those cracks could be monitored. 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. Folks i m working up some typical details here and i want to open for comment.

1 for more detailed information. Expansion joint cad details library index. Construction joints use construction joints when the c o n c r ete placement. Selection guide for fire rated expansion joints for structural and seismic joints in walls floors and decks of buildings.

See clay and concrete masonry banding details tek 5 2a ref. Types of construction joints in concrete structures. The friction of the concrete is the key factor that limits the movement. Concrete undergoes expansion due to high temperature when in a confined boundary which leads to cracks.

Expansion joints are placed in concrete to prevent expansive cracks formed due to temperature change. Ment should not pass through wall expansion or isolation joints. I like the corner detail alright but the joint details i m working on are a work in progress. Concrete joints are normally used to prevent cracks when the concrete shrinks by creating forming tooling sawing and placing joint formers.

Chapter 9 liquid retaining structures p. Ul 2079 certified joint systems. I ve read through aci looked at old detail books and thought through.