Retaining Wall Expansion Joint In Concrete Block Wall

Expansion joints should be located at intervals up to 90 feet.
Retaining wall expansion joint in concrete block wall. Construction joints in retaining walls. 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. S t r uction joint restricts wall move ments and should be as strong as the wall without joints. Other constru c tion joints coincide with or function as contraction or expansion joints.
Expansion joints or isolation separate the sections of the walls so they can move independently and avoid pressure to move together. 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. Expansion joints are provided to allow th.
Precast concrete cantilever wall expansion joints shall be in accordance with the standard specifications section 6 11 3 3. For cantilevered and gravity walls vertical expansion joint spacing shall be a maximum of 60 feet on centers. 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. Construction joints separate the work of the concrete being poured at different times.
They may be vertical and horizontal. While these attributes are the primary basis for concrete masonry s. The main board construction for retaining walls. Expansion joints are provided in every large structure which is subjected to high variation in temperature during its lifetime.
Greased steel dowels are often cast horizontally into the wall to tie adjacent sections together. This temperature variation causes expansion and contraction in the structure. 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. Details of this butt type con s t r uction joint are shown in figure 4.
Vertical expansion joints are incorporated into the wall to account for expansion due to temperature changes.