Roof Gutter Cross Section

Must be designed in accordance with the joint australian and new zealand standard as nzs 3500 3 or section 5 of as nzs 3500 5.

Roof gutter cross section.

That is the total catchment flow divided by the actual number of downpipes used. The code figure 3 5 2 b or c relate gutter cross sectional area to the litres sec that the gutter area can carry. Gutter material n gutter cross section area a hydraulic radius rh and gutter slope s. This paper investigates the impact of gutter cross section on the performance and efficiency of rain water harvesting from roof catchments.

Channels that transport rainwater or snowmelt away from the house. However to this manning term has to be applied a correction based on the aspect ratio of the gutter. Multiple gutter systems with varying cross sectional. Bluescope lysaght australia s premier steel building products manufacturer for trusted guttering brands such as the novaline fascia system.

Alignment allows the gutter to intersect with the rake molding at any gable since the upper tip of the gable rake molding will line up with both the lip of the gutter and the top of the roof sheathing. Horizontal members supporting the rafters. Gutter type a is a medium rectangular gutter with a minimum cross. The vertical wall from the building or house where the gutter is attached.

Horizontal beams that sit on top of the rafters. Lysaght rainwater goods made from colorbond steel. The channel that transports rainwater from the gutter. Board under the high point and just above the roof framing.

The eaves gutter cross sectional area is calculated on the flow in the gutter. The external surface of a roof. Knowing the rainfall intensity the effective catchment area for that gutter cross section can be read from the graph. A duct for water discharge system for a building.

The roof area efficiently drainable by a gutter is proportional to q. As a box gutter is usually. The effective catchment area takes into account the roof slope and any vertical faces. The needed cross sectional area of gutter is 23 cm 2.

Custom cross section diagram of a house roof showing the many different parts of a residential roof including structural parts the various layers. The minimum pipe size needed for a catchment area of 23 m 2 is calculated to be 23 cm 2 using the rule of thumb in equation 6 as shown below. Namely the ratio of the gutter s length to its width. Therefore if a 90 diameter downpipe is sufficient and a 150 or greater diameter is used the gutter area will remain the same as the flow in the gutter will not change by using a larger down pipe.

Box gutter between two parallel roofs.