Drainage Tank Section structure detail

Drainage Tank Section structure detail, Including position, using a collection for a friend, - Clicking on the drawing on the school record, in mm, - Accumulating AI-CT3 (= <$ 10) and AII (> = $ 12), - Position position, use a collection to match, - Click on the account from the previous record, - Click on the account from the record to calculate the mm. The first part is 4x6m100 etc.