I was under the impression that step downs in waffle pod slabs would also require the pad to be stepped down to maintain a constant beam depth. this is how i see it in the standard details given in as2870. for example, if we have a 385mm deep waffle slab with say an 85mm step down to a corner patio to the back of the house or even a garage step down, would you not have to lower the finished pad level by 85mm to maintain the 385mm beam depth (not mentioning the appropriate lap distance behind the line of step down as well). what about a 50-70mm shower setdown in the middle of your slab? Do you just drop back a pod size or do you lower the finished pad height locally around the set downs??
Always thought lowering the pad with the step downs was a must. Getting told otherwise. Am i wrong or do I have lazy/incorrect builders?? Any thoughts guys?
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