When pouring a foundation wall what are the the metal rods that hold the plywood within place when forming it up?

I am talking about the rods you bust rotten afterthe pour to remove the plywood.
Answers:
There are two purposes for steel rods in foundations. One is to strengthen the concrete contained by which case you use re-bar. The other is to hold the forms together while the concrete dries. There is a large expansion pressure conspicuously at the bottom of forms, from the weight of the fluid concrete. These are "ties" and they come in several styles.
forming stakes. you can get them at any home store.
They are called form ties.There are different ties with different form styles.Most adjectives are Simon Forms.
snap ties
All they are are metal stakes.....
It's called "rebar" (short for "reinforcing bar") Source(s): http://en.wikipedia.org/wiki/Rebar
They are called form ties or braces. a smaller contractor
will use plywood and re-bar- some use freshly 3/4 inch steel pipe
they are to keep the forms from bulging -or collapsing until the cement sets up.
on a larger pour they will use aluminum forms and this eliminates the use of so frequent ties but there is re -bar inside the forms to give the concrete added strength-and they stay surrounded by the walls..
They are for STRENGTH.

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