ANSI SPRI ED-1:2019 pdf download.Design Standard for Edge Systems Used with Low Slope Roofing Systems.
ANSI SPRI ED-1 provides the basic requirements for wind load design for roof edge securement of roof edge systems, including gutters and nailers. It also provides information on material thicknesses that lead to satisfactory flatness, accommodating thermal movement, how to minimize corrosion, methods for testing roof edge systems, and other factors affecting roof edge performance. This Standard is intended for use by those that design, specify, and manufacturer roofing materials and roof edge systems used in the roofing industry. The membrane manufacturer shall be consulted for specific recommendations for making the roof watertight at the edge.
ANSI SPRI ED-1 applies to low slope membrane roof systems, with low slope defined here as roofs having a slope <= 9.5 degrees (2:12). The design and installation information found in this document addresses copings, horizontal roof edges, and gutters as well as the following factors which shall be considered in designing a roof edge: Structural integrity of the substrate that anchors the edge (e.g. nailers) Wind resistance of the edge detail Material specifications ANSI SPRI ED-1 provides perimeter edge loads based upon the field of roof pressure for the building under consideration. The user is required to know, or be able to calculate using ASCE 7 Minimum Design Loads for Buildings and Other Structures1 or other means, the field of roof pressure. The intent of this Standard is to provide condensed design information pertaining to the design of roof edge systems; the Authority Having Jurisdiction (AHJ) for the project under design shall dictate the method for determining perimeter edge load requirements. See Commentary. 1.2 Definitions ANSI: American National Standards Institute ASCE: American Society of Civil Engineers Aluminum: a non-rusting, malleable metal sometimes used for roof edge systems. Ballast: an anchoring material, such as aggregate or precast concrete payers, which employs its mass and the force of gravity to hold (or assist in holding) single-ply roof membranes in place. Cleat: a continuous metal strip, or angled piece, used to secure metal components. Clip: a non-continuous metal component or angle piece used to secure two or more metal components together. Cold rolled: the process of forming steel, aluminum, and copper into sheets, panels, or shapes on a series of rollers at room temperature. Coping: the covering piece on top of a parapet wall exposed to the weather, usually made of metal, and sloped to carry off water. Copper. a natural weathering metal used in metal roofing or flashings. Deck: the uppermost structural component of the building immediately below the roof system. The deck must be capable of safely supporting the weight of the roof system, and the loads required by the governing building codes. Design load: the total load on a structural system for the most severe combination of loads and forces which it is designed to sustain. Design pressure: the design load on a structure due to pressure, either negative or positive, caused by wind. Drip: the lower most portion of a metal flashing or other overhanging component, which projects away from the building with the intention preventing capillary action and controlling the direction of dripping water to help protect underlying building components. Fascia: the vertical or steeply sloped roof or trim located at the perimeter of a building. Typically, it is a border for the low-slope roof system. Fastener. any of a wide variety of mechanical securement devices and assemblies, including nails, screws, cleats, clips and bolts, which may be used to secure various edge components.ANSI SPRI ED-1 pdf download.