Understanding Wall Ties in Cavity Walls

This video tutorial explains the use and placement of wall ties in cavity walls. Wall ties are essential for connecting the outer and inner leaves of a wall, typically made of brick and block work, to enhance the wall's strength. The tutorial provides specific measurements for placing wall ties horizontally and vertically, especially around door and window openings. It also discusses the importance of a staggered pattern for maximum strength and how placement can vary based on cavity size and tie type.

What is the primary function of wall ties in a cavity wall?

• To provide insulation

• To reduce construction costs

• To enhance aesthetic appeal

• To connect the outer and inner leaves

How should wall ties be positioned in relation to the leaves?

• Randomly placed

• Equally on both leaves

• Only on the inner leaf

• Only on the outer leaf

What is the recommended horizontal spacing for wall ties?

• Every 6 bricks

• Every 8 bricks

• Every 4 bricks

• Every 2 bricks

At what vertical spacing should wall ties be placed around door and window openings?

• Every 450 mm

• Every 100 mm

• Every 225 mm

• Every 300 mm

Why should wall ties be placed in a staggered pattern?

• To achieve maximum strength

• To simplify construction

• To improve wall aesthetics

• To reduce material usage

What factors can influence the variation in tie placement?

• The color of the bricks

• The size of the cavity and type of tie

• The builder's preference

• The weather conditions