Parapet Gutter Design

Parapet and valley gutters are treated differently because they have a higher risk of failure.

Parapet gutter design.

Because parapet roofs are encircled by walls they are more prone to leaking than traditional pitched roofs. Flat roofs of this type are usually finished in steel roof sheet and fall towards a special type of gutter called a box gutter. This is a tricky thing to execute and as such we design into the upper parapet assembly a pathway for drying via diffusion to provide some performance redundancy. Aluminium parapet and boundary wall non branded gutters are manufactured to suit each build and designed specifically to meet your individual project requirements.

For a building of say a design life of 30 years this would give a return period of 45 years and 135 years respectively. Our aluminium parapet and boundary wall gutters can also be manufactured as a parapet gutter liner. Nov 30 2014 explore alex radford foster s board parapet detail on pinterest. Special profile parapet and boundary wall gutters can be fabricated or pressed.

Working with manufacturers will help develop your understanding but don t delegate your design responsibility to them. The design of the parapet must resist moisture penetration yet must also consider the various forms of moisture. Valley and parapet and boundary wall gutters generally two categories of design rate should be considered depending on the return period required. They are simply described on the vba s box gutter design fact sheet as a graded channel generally of a rectangular shape for the conveyance of rainwater within the building footprint including adjacent to a wall or parapet.

See more ideas about parapet architecture details construction drawings. Metal parapet and boundary wall gutters will be manufactured to suit each project as we can produce an infinite amount of gutter sizes to suit your individual project requirements. Special profile parapet and boundary wall gutters can be fabricated or pressed. Moisture migration via capillary action and excessive relative humidity in the parapet cavity ultimately resulting in condensation is often overlooked in the parapet design.

Making sure your parapet and boundary wall guttering design has the correct flow capacity is. Box gutter design and compliance is detailed in plumbing regulations sa hb 39 installation code for metal roof and wall cladding as well as saa snz hb 114 guidelines for the design of eaves and box gutters. On larger and more complex schemes specialist consultants may be employed to design the rainwater drainage system. 1 5 x building design life 4 5 x building design life.