Does a waffle slab need extra allowance for a sloped verandah tie-in?

Yes — where a verandah or outdoor area falls away from the main slab for drainage, the formwork and edge detail need to genuinely account for that transition and fall during design, not left to be worked out on the day.

Flagging any sloped or stepped outdoor areas to your contractor during planning ensures this is genuinely built into the formwork from the start.

Related Questions, Guides & Calculators