Where should I put my movement joints?
A vertical movement joint should be located at no greater than half the maximum spacing from a corner or return in a wall. Hence for joint spacing of 12m in a straight run of walling, a joint is required to be no more than 6m from the corner.
Do brick walls need expansion joints?
Horizontal expansion joints are also recommended when brick is used as an infill material within the frame of the structure. Expansion joints must be provided between the top course of brickwork and the member above.
How often do you put expansion joints in brickwork?
The general thinking in the construction sector is that your expansion joint will be spaced at approximately 10 – 12 metres. This joint will be continuous for the full height of the brickwork or blockwork, from floor to roof of a house, for instance.
Where should masonry walls have movement joints?
Vertical masonry movement joints should be located on both sides of outside wall corners so that the dis- tance between them does not exceed the appropriate spacing between movement joints for that specific project (Figure 3A).
What is the difference between expansion joint and movement joint?
An expansion joint and a movement joint are generally terms for the same thing in building and construction. As previously stated above, expansion joints are gaps to allow and accommodate the expansion of adjacent elements, primarily due to thermal movement, but also to many other possible influences.
Do you need movement joints in internal walls?
In internal walls, movement joints are only needed if the wall is going to be plastered before the brickwork has dried out.
What is the distance between expansion joints?
Joint expansion In jointed reinforced concrete slabs, the maximum expansion joint spacing varies from 25–27 m, and in unreinforced concrete, it ranges from 40 m (for slabs 230 mm thick) to 60 m (for slabs > 230 mm thick).
What are movement joints in masonry?
All building materials are subject to movement. This movement is due to several reasons however, two are particularly influential on vertical movement in loadbearing masonry. These are thermal expansion and contraction due to temperature changes and moisture movement.
Where should separation joints be located in a masonry building?
Where should building separation joints be located? At discontinuities in the massing of the building, and at intervals of 150′ to 200′ (40 to 60m).
How often do you need control joints in masonry?
The National Concrete Masonry Association (NCMA TEK 10-2C) recommends that control joints be spaced at 25 feet or 1.5 times the height of the wall, whichever is less.