You start the foundation with a footer or footing.
Tie new masonry wall to existing concrete.
Some engineers require the edges of the existing footings and foundations where the new and old concrete meet be roughened.
Teks 16 1a and 16 2b refs.
The 365 bent gripstay channel slot anchor ties masonry to steel columns concrete or existing walls the 365 has standard 1 bend.
When butting up a new footing to a basement wall the boss would have us simply knock a hole or two in the cinderblock about 6 round stuff some ruble into the top of the block below the holes allow the concrete to flow into the block drop a piece of rebar in once the concrete level was half way up the hole.
Composite walls are designed so that the masonry wythes act together as a single structural member.
Existing façades constructed of brick stone masonry pre cast concrete etc.
Make these holes 12 inches on center horizontally or vertically depending upon the predominant orientation of the joint.
Drill 5 8 inch diameter holes six inches deep into the old concrete.
Connect new foundation to existing.
These connectors are bolted to the wall in a plumb upright position to ensure any brickwork is also straight and level.
Ctp stitch ties are a quick and easy way to re anchor existing veneers to back up structures.
That have wall ties missing or corroded can be re attached using ctp stitch ties.
Those two pieces of vertical rebar help lock two different pours of concrete together.
If the joint is taller than wide place the holes vertically.
Even some require application of bonding agent to enhance the bonding.
This requires the masonry wythes to be connected by masonry headers or by a mortar or grout filled collar joint and wall ties to help ensure adequate load transfer.
Re anchor existing veneers to back up structures with strength.
The wall starter connector is simply bolted to the existing wall and wall ties are then slotted into the rack at distances where it is required to tie into the new wall.
19 20 more fully describe composite walls.
If the joint is wider than it is tall place the holes horizontally.
This footing will soon have a foundation wall on it directly over the keyway groove in the concrete.