Dowel between new and existing
Dowel between new and existing
(OP)
If there is a new vertical concrete pour against existing, I have seen dowels detailed in a way where they are dipped in grease on the new pour. Is there a better alternative to using grease? Could wrapping in building paper be a more reliable method.






RE: Dowel between new and existing
RE: Dowel between new and existing
RE: Dowel between new and existing
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RE: Dowel between new and existing
RE: Dowel between new and existing
How could you do anything so vicious? It was easy my dear, don't forget I spent two years as a building contractor. - Priscilla Presley & Ricardo Montalban
RE: Dowel between new and existing
RE: Dowel between new and existing
How could you do anything so vicious? It was easy my dear, don't forget I spent two years as a building contractor. - Priscilla Presley & Ricardo Montalban
RE: Dowel between new and existing
In your 42" tall knee wall, you will need to prevent rotation at the base unless it is otherwise restrained. The most common way of doing this is to drill into the supporting structure, and install deformed rebar dowels using adhesive. Carry the dowels either one development length, or in your case, the full height of the wall.
I don't see a place for debonded dowels at the base unless the wall is purely decorative and supported by other structure.
RE: Dowel between new and existing
RE: Dowel between new and existing
RE: Dowel between new and existing
Yes, preventing the old and new walls from being connected is a good detail. Sleeve the bars if you feel the need to provide a connection. It is not necessary and could place unwanted and unnecessary stress on the existing. Also keep in mind that when the old wall is removed and replaced, there could be rotation, making the new wall pull outward on the existing. Are you certain this is not an upturned beam reducing deflection across the span? (Just making sure you have considered it, since you mention deflection issues.)
RE: Dowel between new and existing
I'll be back....