WorksheetsCavity wall ties
Total questions: 14
Worksheet time: 9mins
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
Please select the the Masonry to masonry wall ties in the following
ST1, SD1, Heavy duty, Heavy duty tie suitable for most building sizes and types. Not very flexible and not recommended for applications where there is expected to be excessive differential movement between leaves
Type 2
e.g. RT2, General purpose tie for domestic and small commercial buildings.
Hellical wall tie
How many types of wall tie are there?
5
6
7
How far into the masonry does a wall tie have to be placed in Mm's
45
50
60
70
Horizontally how far does a wall tie need to be placed on a timber frame?
300 - 400mm
450-600mm
700-750mm
