Canada building code 2015

A section is being added onto a warehouse that is 15 m long by 8 m wide with a planned flat roof. This portion of the building is 2 m lower than the rest of the building thus forming 2 walls along the short side and the long side of the roof. A second section is being added to the warehouse that is 10 m long and 8 m wide that is to have a sloped roof. The building is in an area where the 15-min rainfall is 30 mm. Determine the following: a) The leader size for the flat roof is one roof drain is being installed. b) The leader size if two roof drains are being utilized. The size of the gutter and leader for the sloped roof with one downspout d) The size of the gutter and leader for the sloped roof with two downspouts e) The size of the building storm drain for the combination of the roof drain and gutter. A section is being added onto a warehouse that is 15 m long by 8 m wide with a planned flat roof. This portion of the building is 2 m lower than the rest of the building thus forming 2 walls along the short side and the long side of the roof. A second section is being added to the warehouse that is 10 m long and 8 m wide that is to have a sloped roof. The building is in an area where the 15-min rainfall is 30 mm. Determine the following: a) The leader size for the flat roof is one roof drain is being installed. b) The leader size if two roof drains are being utilized. The size of the gutter and leader for the sloped roof with one downspout d) The size of the gutter and leader for the sloped roof with two downspouts e) The size of the building storm drain for the combination of the roof drain and gutter