Cavity wall ties

In standard brick-to-block construction, wall ties are built into the leaves during construction. To ensure wall ties are effective at tying the leaves together they should be pressed down in and then surrounded by fresh mortar and should never be pushed into a pre-built joint. They should be installed with a slight fall to the ------- leaf, not towards the ------- leaf

• Outer then inner

• inner then outer

• left then right

• right then left

The minimum density of cavity wall ties (as defined in Eurocode 6) is 2.5 ties per square metre. Typically they are installed at what measurement horizontal and what measurement vertical spacing

(a)  

Blockwork coursing usually means wall ties are installed at what vertical spacing on reveals

(a)  

Are you supposed to lay wall ties directly above each other or are you supposed to lay in a staggered pattern

• Above each other

• Staggered

There are 4 types of wall tie to tie masonry to masonry and 3 types of tie to tie masonry to timber. Which type of wall tie is used on domestic traditional masonry to masonry (relatively tall or unusually shaped buildings in vulnerable areas where wind speeds exceed 31 m/s usually)

• Type 1 / ST1, SD1,

• type 2

• type 3

• type 4

When laying wall ties on Masonry to masonry cavity walling what is the maximum distance inbetween wall ties horizontally?

(a)  

When laying wall ties around an opening on masonry to masonry cavity walls what is the maximum distance away from a reveal a wall tie should be placed

• 225mm

• 300mm

• 150mm

• 400mm

What is the minimum width of block internal skin below DPC for a timber frame

• 150 mm

• 100mm

• 225mm

The selection of wall ties depends on many factors. These include the type of masonry to be tied, the cavity width, the type and height of the building and its geographical location.

• True

• False

Please select the timber frame ties from the list below

• Teplo-L-5

• Staifix-Thor Helical Timber Tie

• Staifix Timber Frame Tie

• Ancon Staifix Frame Tie