Parapet Detail Flat Roof

What types of penetration are typically required in flat roofs.

Parapet detail flat roof.

Waterproof membrane to prevent water penetrating the structure and interior of the building. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. See more ideas about parapet architecture details construction drawings.

Parapets dramatically reduce these pressure differences at roof edges figure 3. Nov 30 2014 explore alex radford foster s board parapet detail on pinterest. A roof is considered to be flat when it is of a slope of 1 5o to the horizontal. Minimum of 12 to top of parapet.

Free cad dwg download of a parapet wall to be used in your roof design cad drawings. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall. The assembly is straight forward but what complicates matters is that the roof needs to be vented. When wind blows against a building it produces vortices at the roof edges that create huge pressure differences at roof perimeters that can suck roofs off buildings.

To address these conditions detailing must provide excellent bulk water management of roofing parapet wall and parapet cap venting to promote drying and careful attention to separating the parapet from interior spaces. A flat roof usually consists of the following. Exterior wall parapet rafters prep. Height of roofing at wall.

To wall sloped roof no overhang ledger support. Common penetration details include soil vent pipes hot pipes from boiler flues or log burners electrical cables for air conditioning units extraction ducting and tracks for mechanical window cleaning systems.