Retaining Wall Expansion Joint In Concrete Block Wall

Details of this butt type con s t r uction joint are shown in figure 4.

Retaining wall expansion joint in concrete block wall.

These joints may be filled with flexible joint fillers. Vertical expansion joints are incorporated into the wall to account for expansion due to temperature changes. The inclusion of full panel height openings and or the inclusion of bed joint reinforcement can assist in lowering the risk of un planned cracking. While these attributes are the primary basis for concrete masonry s.

They may be vertical and horizontal. An information series from the national authority on concrete masonry technology ncma tek 10 2c 1 control joints for concrete masonry walls empirical method introduction concrete masonry is a popular construction material because its inherent attributes satisfy the diverse needs of both exterior and interior walls. Expansion joints are provided to allow th. The main board construction for retaining walls.

Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together. Construction joints separate the work of the concrete being poured at different times. The provision of movement joints depend on the lengths of walls.

The simplest vertical constru c t i o n joint is formed using a bulkhead b o a r d. Construction joints in retaining walls. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on centers. Expansion joints or isolation separate the sections of the walls so they can move independently and avoid pressure to move together.

S t r uction joint restricts wall move ments and should be as strong as the wall without joints. Exterior vertical wall expansion joint selection guide emseal watertight fire rated sound proof insulating precompressed foam sealant expansion joints. 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.

As a rule of thumb it is normal to consider movement joints at approximately 6 m centres in straight lengths of autoclaved aerated concrete block walls.