I am constructing a 10m x 5m building with 3 sides at ground floor level (open as 2 bays on one long face for parking access) and a room above with 2 UB's to support a wall over the open side. The 3 sides at ground floor are 4" dense blocks for inner and outer leaves with a 4" cavity. At first floor level the inner leaf will be 4" lightweight concrete blocks whilst the outer cavity leaf will remain as 4" dense concrete blocks. The wall over the UB's will be 6" or 8" thick (the UB is only 171 wide but assume I can put 8" blocks onto it ?) lightweight concrete blocks.
My question is should I just normally bond the 2 cavity skins to the solid wall or use cavity ties to bond to avoid cracking due to differential thermal expansion ?
The 3 faces will be rendered whilst the solid wall with be timber clad.
Any advice or thoughts much appreciated.
My question is should I just normally bond the 2 cavity skins to the solid wall or use cavity ties to bond to avoid cracking due to differential thermal expansion ?
The 3 faces will be rendered whilst the solid wall with be timber clad.
Any advice or thoughts much appreciated.