| Sent by FAX to: 0633 246110 |
Dear John,
Fire testing of Cavity Lock remedial cavity wall tie.
In the latest test in our fire test rig with a static dead load on each tie of 1.3kN your tie survived a two hour test without failure of any of the three replicate samples.
All three samples are now placed in the upper half of the wall and would have reached several hundred degrees in the part of the tie nearest the fire face.
This indicates that this tie system can, when installed using the correct techniques, be recommended for repair work to buildings having a fire period requirement of up to 2hrs.
Yours sincerely
R.C. de Vekey
Head of Masonry Structures Section, Structural Design Division, Geotechnics and Structures Group |
