A: Alexander Graham Bell lived much of his life in the town of  Brantford, Ontario. The educator and primary inventor of the telephone settled there with his family in 1870.
Control joints can be bridged and moved to a grout joint, although it's better to try and lay the tile out to the joint if possible. It's expansion joints that must be honored thru the tile. __________________. Whether you think you can, or you think you can't, you're probably right..
Control joints should be put in the concrete to provide a place for stress relief (read 'cracking'). Control joints should be 2 to 3 times (in feet) the thickness of the slab in inches. i.e. a 4 slab should have control joints every 8 to 12 feet. Control joints should be Â¼ the thickness of the slab. Thus a 4 sidewalk should have 1 deep control joints. They should either be scribed into the surface with appropriate concrete finishing tools or saw cut within 8 to 12 hours of the pour.