Guides

Guides to reading interior drawings.

Plain-language guides to the checks that catch interior problems on the drawing rather than on site. No reproduced code text, no guarantees — just what to look at, what it usually means, and what to ask.

How to use them

Three notes before you start.

These guides describe review practice. They are not regulation, and they are not a substitute for the requirements that apply to your project.

Check the revision you are actually reviewing

Most of these checks compare one sheet against another. If the sheets are not from the same issue, the comparison is meaningless. Confirm the revision before you begin.

Distinguish practice from requirement

A comfortable working clearance and a legally required one are different things. The guides say which is which, and the standards pages explain how regulation, statutory guidance, model codes and published standards differ.

Numbers in these guides are practice, not permission

Where a guide gives a range, it is the range that works in use and is drawn from common design practice. It is not a substitute for the requirement that applies to your project, and applying a range from a web page instead of the applicable document is exactly the mistake these guides are warning about.

Start with one sheet

Rather have the drawings read for you?

Upload one page and compare the findings with what your own pass through the checklist found.

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