Construction joints separate adjacent placements of concrete to make large pours manageable.
Concrete retaining wall expansion joint detail.
Figure 12 for timber retaining walls and figure 13 for masonry and concrete retaining walls.
Especially when the retaining walls is longer it can not be concrete at once and by a single pour.
Typical control joint detail figure 16.
Retaining walls and traffic barrier details for reinforced concrete retaining walls are.
True expansion joints in cast in place walls are not common.
Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3.
1 for more detailed information.
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.
1 2 filler material.
Chapter 10 mass concrete p.
Expansion joints that allow completely independent movement between adjoining components are sometimes called isolation joints.
Thus we can check the stability.
Typical expansion joint detail backfill and drainage requirements.
See clay and concrete masonry banding details tek 5 2a ref.
Concrete expansion joint detail.
Backfill and drainage requirements shall be in accordance with.
Due to the above reasons and many others several shear keys are provided over the cross sections.
Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together.
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.
Chapter 9 liquid retaining structures p.
8 2 types of joints in concrete walls 8 3 contraction joints 8 4 isolation or expansion joints 8 5 construction joints.
Expansion joints should be located at intervals up to 90 feet.
For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on.
Construction joints use construction joints when the c o n c r ete placement.
Backfill and drainage.
Ment should not pass through wall expansion or isolation joints.
9 1 introduction 9 2 contraction joints 9 3 isolation or expansion joints 9 4 construction joints.
Expansion joints also work as contraction joints and may have smooth dowels to maintain the plane of the wall.
Backfilling against reinforced concrete retaining walls shall not be permitted until the concrete has reached its 28 day strength.
These joints may be filled with flexible joint fillers.
Since we know the cohesion of the concrete and the surface area of the joint resisting force can be calculated.
1 the bridge office has.
