What is a butterfly wall tie?
The Joluka Butterfly Wall Tie is made from galvanized steel wire and used to connect cavity brick walls. To calculate the length of Butterfly Wall Tie required deduct 20-50 mm from the entire wall thickness including the cavity.
What is the purpose of a tie in a masonry wall?
Wall ties, sometimes called ‘brick ties’, are used in buildings with cavity walls. They are used to join the two leaves of a cavity wall together, allowing the two parts to act as a homogeneous unit. Hidden from view after construction, wall ties play a vital role in ensuring the stability of a building.
What are the different types of wall ties?
What type of wall ties do I need?
- Type 1 Wall Ties. Type 1 wall ties are a heavy Duty wall tie, designed to be used in high rise, public and commercial buildings.
- Type 2 Wall Ties.
- Type 3 wall ties.
- Type 4 wall ties.
- Channel ties.
- Movement Wall Tie.
- Frame Cramp.
- Column Wall Ties.
What length should wall ties be?
Recommended Lengths of Masonry/Masonry Wall Ties
| Cavity Width (mm) | Length of Wall Tie (mm) |
|---|---|
| 50-75 | 200 |
| 76-100 | 225 |
| 101-125 | 250 |
| 126-150 | 275 |
How long is a brick force?
Brick Force
| Brickforce Sizes & Dimensions | Code |
|---|---|
| Brickforce 230X2.80mm NHBRC (20M) | BF230NHBRC |
| Brickforce 150X2.80mm NHBRC (20M) | BF150NHBRC |
| Brickforce 100X2.80mm NHBRC (20M) | BF100NHBRC |
| Brick Force 75X2.20mm (20M) | BF75 |
What happens when wall ties fail?
The main signs of wall tie failure are: Horizontal cracks in the walls – Wall tie failure can often be identified by the horizontal cracking that results from the expansion caused by the rusting process. Bulging walls – Rusty and expanding wall ties can also cause brickwork to bulge outwards.
Where do you put wall ties?
Wall tie spacing and positioning The ties should be evenly distributed over the wall area, in a staggered pattern, except around openings. Change the wall tie pattern around openings such as windows, doors, roof verges, unreturned or unbonded edges and un-tied vertical movement joints.
What do weep holes do?
The inclusion of weep holes in masonry walls is intended to serve two purposes: Ventilation: They allow ventilating air to the back of a wall to help prevent mildew, dry rot and damp which might otherwise reduce the life or performance of building materials such as cavity wall-ties, cavity insulation and so on.
Should wall ties be staggered?
Ties should be evenly distributed over the wall area, except around openings, and should preferably be staggered. At vertical edges of an opening, unreturned or unbonded edges, and vertical expansion joints, additional ties should be used at a rate of one per 300mm height, located not more than 225mm from the edge.
Do wall ties go below DPC?
Wall ties should: be stainless steel or non-ferrous. be spaced above and below the DPC in accordance with Table 10.
What is a butterfly wall tie used for?
Traditional Butterfly Wall Tie previously to BS1243. Twist central is used to prevent moisture travelling across cavity (twist must be placed down the cavity). Accepted as Type A (sound) Previously to BS1243
What are wall ties used for?
Wall ties, sometimes called ‘brick ties’, are used in buildings with cavity walls. They are used to join the two leaves of a cavity wall together.
What are the different types of wall ties for brick-to-block construction?
Ties for Brick-to-Block Construction. 1 Building Information Modelling. For BIM Objects of these products, please click here or visit the National BIM Library. 2 Ancon ST1 Wall Tie. 3 Ancon Staifix RT2 General Purpose Wall Tie. 4 Ancon Staifix HRT4 Housing Wall Tie (Type 4/Type A) 5 Ancon Teplo Range.
What is the required embedment of unit ties in hollow masonry?
The required embedment of unit ties in hollow masonry is such that the tie must extend completely across the hollow units. Proper embedment can be easily attained with the use of prefabricated assemblies of joint reinforcement and unit ties.