existing structural material tests

huangyhg

existing structural material tests
hello all;
we have an existing structure that we are renovating (removing interior load bearing walls and adding a second floor).  we're going to specify core tests of existing concrete and tention tests on existing reinforcement, but i'm looking for a publication that will give guidance on who many cores and how many steel samples should be tested to arrive at reliable numberes for design.
the structure is reinforced concrete with a stone veneer, concrete flat slab construction on numerous internal load bearing walls.  it was built in the 1930s and we do have complete construction drawings, but not the specification.  
does anyone know of an appropriate publication?  and in either case your experience and advice would be greatly appreciated.
cheers,
ys
b.eng (carleton)
working in new zealand, thinking of my snow covered home...
check out our whitepaper library.
the missouri dot has some info in their rating manual found here on page 7 -
thanks kilroy; i've never seen the missouri document, however i am very familiar with a the canadian equivalent (pwgsc bridge inspection manual).  i'm looking for a guide on the application of detructive testing to buildings.
i will definately have a good look at the missouri text though, thanks!
cheers,
ys
b.eng (carleton)
working in new zealand, thinking of my snow covered home...