Understanding Cavity Wall Construction

What was the primary function of the rubble core in historic walls?

• To provide structural support

• To store water and prevent its movement inside

• To insulate the building

• To enhance the aesthetic appeal

What was a significant drawback of early solid brickwork walls compared to cavity walls?

• They took longer to construct

• They were more expensive to build

• They allowed moisture to penetrate and damage the interior

• They were less aesthetically pleasing

Why did early cavity walls emerge as a construction technique?

• For aesthetic purposes

• To improve moisture control

• To reduce construction costs

• To make construction faster

What is the main advantage of having a cavity in cavity walls?

• It allows for easier construction

• It reduces the need for wall ties

• It stops moisture from reaching the interior

• It provides a space for electrical wiring

How did the transition from solid brickwork to cavity walls improve building insulation?

• By using less material

• By creating an air gap that reduces heat transfer

• By allowing for larger windows

• By facilitating easier construction methods

What material is predominantly used for wall ties in modern cavity walls?

• Galvanized steel

• Stainless steel

• Copper

• Aluminum

What is the purpose of the drip feature in wall ties?

• To provide a pathway for electrical wiring

• To prevent water from bridging the cavity

• To collect and redirect rainwater away from the wall

• To enhance the structural strength of the wall

Why are wall ties spaced according to structural requirements?

• To make the wall look more appealing

• To minimize material costs

• To ensure even distribution of load

• To prevent thermal bridging and maintain insulation efficiency

Why are ventilated cavities important in cavity walls?

• To allow for electrical installations

• To improve the wall's structural integrity

• To facilitate air movement and moisture control

• To provide an exit for pests

What led to the development of cavity walls in the late 19th century?

• The requirement for better moisture control and insulation

• The need for faster construction methods

• The availability of cheaper materials

• The desire for more decorative wall types