Scuppers As Primary Roof Drainage


Any advice. code-compliant drain and scupper sizes. Rubber: A material, at room temperatures, is capable of recovering substantially in shape and size from large deformations. Recovering or replacing an existing roof covering shall not be required to meet the requirements for secondary (emergency overflow) drains or scuppers in Section 1503. Each bi-functional drain has two outlets, one that is connected to the primary storm drainage piping and one that is connected independently to a secondary storm line or preferably piped outside the building where. The overall thickness of the veneer typically ranges from 2 to 6 inches and may contain multiple layers, consisting of. Gravel Guard Wall Termination 6. overflow drains and/or scuppers are sized so that no more than 5" of water will accumulate on any portion of this roof, should the primary drainage system be blocked. Typically, a low slope roof is designed with one primary roof drain and one secondary roof drain -- or overflow scupper (drainage outlet). Where roof drains are required, secondary (emergency overflow) roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water will be entrapped if the primary drains allow buildup for any reason. 5 Parapet wall scupper location scuppers. Scuppers are ideal for horizontal drains with free waterfall, terraces / decks, flat roof, box gutters, parapets and roofs with vertical walls angled at 90°, covered with roofing. When it comes to design, we've got the tools to get you from the desk to the roof. _ Show elevator penthouse, roof hatch, mechanical equipment, curbs for mechanical equipment, skylights, equipment screens, shafts and vents through roof. Mifab R1270-RG Combined Large Sump Cast Iron Roof Drain with Secondary Overflow and 19" Cast Iron RoofGuard Domes, & additional options for Under Deck Clamp, sump receiver, Vandal Proof Screws, and Adjustable Extension. Fasten gravel guard angles to base of scupper. By Phil Dregger, PE, RRC, FRCI, Technical Roof Services It's a roof consultant's nightmare. These must be cleaned regularly to ensure they move water off the roof. Step 5: Calculate drains needed. As required by the International. It is recommended that roof surfaces have a minimum residual slope or curvature of not less than 1/4 inch per foot of horizontal distance between the level of the drain and any point of the roof to minimize the ponding of water. Multiple accounts of collapsed roofs from hydrostatic loads that exceed the design capacity of the roof structure have been linked to the poor design or maintenance of side OF's [, , , ]. Re: Detail for no gutters Not sure it is a great idea. Secondary roof drains are similar to primary drains except they have wiers or standpipes that elevate the inlet above the level of the primary drains. How much does TPO roofing cost? For a decent quality TPO membrane, pricing starts at $5. Stormwater drainage design is an integral component in the design of parking lots. An Overflow drain is a standard drain with either an internal or external water dam used to prevent the overloading of roofs. GAF is happy to share our website content with you through our free media sharing service. Clean out all roof drains and downspouts on Campus Post sign indicating primary and secondary evacuation routes in contrasting colors Clean clogged scupper on. The roofing contractor shall verify all roof dimensions and drain locations and confirm same with the manufacturer. WHEN SELECTING A ROOF DRAIN Note: First and foremost, be sure to comply with all local plumbing codes. Dam-Style Overflow Drains. Scuppers on a flat roof can serve as primary drainage or secondary drainage. Here you will find all of the BUR specifications, 3-part specs, details and installation guides. is generally caused by debris at the entrance to the primary roof drains but can occur anywhere along the primary piping system, such as an under-slab collapse. The primary function of the drainage systems is to prevent the retention of water on the roof by removing water from the roof as quickly as possible. New Roof Drain Detail 12. Area of ponding3 in front of the primary and overflow scuppers. If the scuppers are used as primary drainage, then they are applied flush with the roof level. When coverings are installed, the contractor needs to consider where the water will drain. Indicate roof drains and emergency roof drains/scuppers with the areas they impact. Roof Drainage. Right after an especially intense rain, you get a call. That thickness has to be accounted for in the wood nailers when developing the roof edge detail as well as in wall flashing heights and curbs. Also, coal tar built-up membrane systems should be detailed in accordance with manufacturer requirements; especially at drains, scuppers, and roof edges. Note that there are some scuppers on one low roof area only. Causes of Residential Roof Leaks. Secondary drainage, such as scupper or secondary roof drains, will be required. The primary considerations in designing a roof drainage system are: The amount of rainfall landing on the roof membrane, How long it rains, The speed at which the rain collects at the drain. of the roof structure. All overflow drains to be two inches higher than primary drain. In either case, the discharge shall be located so that it is readily visible by building occupants. 4)* The scupper shall be located as determined by the roof slope and contributing roof area. Scuppers: See Roof Online’s Roof Scupper Basics page. The overflow drainage system is intended to function independently of the primary system and to drain water from the roof if the primary drains and scuppers become blocked. "The scupper is supposed to be like 1 inch above the main drain. Commercial roofs have many vulnerable points such as flashing around HVAC, pipes, vents and cables as well as construction seams and screws. membrane recommendations for these roof systems for various slopes. Building Roof Plans General notes and annotations on the same sheet; Section cut references; Plan dimensions; Indicate roof pitch/taper and drainage arrows; Gutters and downspouts; Primary and secondary roof drains and scuppers; Label roof assembly and deck materials; Clearly Identify new work; Building Elevations Entrances, window arrangements. FLOOR DRAINS When a hot water tank is located on a concrete floor, a minimum 3” trapped. Between a flat roof’s drains, gutters, scuppers, and downspouts, property managers should ensure that water is properly and freely flowing off of the roof. And ponded water can void a warranty, too. (HVHZ 1514. Used at the junction of the roof and the parapet when horizontal or vertical pipes arrangement is used. Since most urban storm drains do not connect to treatment facilities, but rather drain directly into lakes and streams, untreated animal feces can become a significant source of pathogens in surface waters. Internal Drains. HIGH-VELOCITY HURRICANE ZONES- SECONDARY (EMERGENCY) ROOF DRAINS R4413. Provide a minimum slope to drains of 1:50 on roofing surfaces. While roof drainage makes most people think of gutters, which are an important element, there are a great many more types of roof drains that are used in addition to this oft-used solution. In this way, the scupper is highly effective in collecting water. When providing roof slope, consider sloping the structural roof deck. Information regarding drainage issues shall be shown in the framing plan, as required by, Chapter 8 of the Miami-Dade County Code. If standing water is observed more than 24 hours after the last rain fall, the roof drainage system is likely insufficient and should be inspected by a professional. In other words, some sort of primary deck or roof drain, which is bonded into the horizontal surface of the deck or roof, is used to carry off water under normal circumstances. Flat roofs tend to use slope to direct the water to a drain or scupper. primary and overflow roof scuppers - refer to details #4 and #7 this primary and overflow roof scuppers - refer to details #4 and #7 this sheet. Hercules® Roof Drain. The result is the number of drains needed. In all cases it is important to properly detail and install the edge conditions. Installing a Scupper on an EPDM Roof. Scuppers can also be provided as primary or secondary drainage points. The unique 90° angle of our parapet roof drains enables them to fit snugly in place while making economical use of space. The Roof Systems Manual is based on the long standing experience and expertise of roofi ng professionals and provides the tools to execute and perform these stages correctly. Dam-Style Overflow Drains. A roof scupper is a roof drainage system that provides drainage of a flat roof by allowing the water runoff from the roof to exit the roof through a metal edge, parapet wall or through the deck into a downspout or leader. For latest dimensions always consult the current submittal sheet. Metal Valley Flashing OK Replace Repair N/A 6. There will not be any visible parapet type roof scuppers. Secondary scuppers—Emergency drains higher up on the parapet walls in case the primary scuppers clog Gutters—Metal troughs carrying water from the roof to downspouts Downspouts —Scuppers and gutters both drain to downspouts, which empty into catch basins or drain into the municipal system. This is basic stuff, guys Learn it. If this drain gets plugged, however, then the water is supposed to go out through the scupper. Private Collection Only people explictly granted permission can access. 2 SCUPPERS When scuppers are used for secondary (emergency overflow) roof drainage, the quantity, size, location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by Section 1611. Roof drainage: Roof-mounted solar PV systems shall not cause excessive sagging of the roof that results in water ponding. Secondary roof drainage systems are sized for a more severe 100-year, 15-minute storm. Though this project was relatively small in scale, this 17,500 square foot roof area proved a worthy test, with multiple levels and complicated logistics. 8 million shortfall, the the School Building Committee chose from a lengthy list of options provided by SMMA Architects to trim costs. Jobsite conditions, contract specifications and/or other documents may require changes to the general guide. See more ideas about Flat roof, Decks and Roof detail. The flow through the primary system shall not be considered when sizing the secondary roof drain system or scuppers. FD-4020 series of parapet roof drains consist of a cast iron body with reversible side or bottom outlet, a removable 45 degrees Aluminum or Nickel Bronze grate with 90 degrees combination frame and membrane flashing clamp. Note the attachment, i. Gutters carry the water to the downspout from the roof. To find out, you first have to know which type of drainage system you have and if it's the right one for your roof. Slope to Drain PlastiSpan sloped roof insulation is available with slopes of 1/2%, 1%, 1-1/2%, 2%, 3%, 4%, and 8% per metre (per foot). Some jurisdictions allow (or require) the discharge from clear-water drainage systems to be included in the stormwater system. Design and installation of roof drainage systems shall comply with Section 1503 of this code and Sections 1106 and 1108, as applicable, of the ((Interna-tional)) Uniform Plumbing Code. Floor Drain with Dome. all abatement to be completed by the contractor. An obstructed roof drain can cause a great deal of damage, particularly if there are parapet walls around the roof perimeter. We will provide a diagram to show you how it works. roof drain elbows and roof flashing (tar and felt) contain hazardous material. The primary considerations in designing a roof drainage system are: The amount of rainfall landing on the roof membrane; How long it rains. Secondary drainage, such as scupper or secondary roof drains, will be required. One-piece double drain receiver positions roof drain, overflow drain side by side. to drains, scuppers or to outfall. Secondary (emergency) roof drain systems shall have piping and point of discharge separate. One-piece double drain receiver positions roof drain, overflow drain side by side. roof insulation jm epdm sealing mastic acceptable wood nailer 4“ (100 mm) minimum note: jm epdm membrane detail shown for wall flashing applied first. You can't have too many. Where you can drain over the wall, the overflow drain must be at least the same size as the regular drain and located no more than 2″ above the low point of the roof. TARRANT COUNTY DETAIL STANDARDS 1. City of Glendale. Roof underlayment requirements recommendations is roofing felt needed under asphalt shingle warranty for nrca permeability of underlayments in hot humid climates what are the benefits from using or, see a rich collection of stock or photos for roof drain pipe you can buy on shutterstock explore quality art more. The sloping. Specific to this product, it:. The necessary roof drainage may be accomplished through the use of primary roof drains and/or secondary drains, primary scuppers and/or secondary scuppers or any combination. Alan Bradley Roofing - Best Quality at the Best Price for Roofing Specialists in Tucson, AZ. remember that you need an overflow drain/scupper about 1" higher then the primary. 2) The scupper shall be located as determined by the roof slope and contributing roof area. Two Way and Four Way Systems. Secondary roof drains or scuppers are required when the. Secondary roof drainage systems shall be sized in accordance with Section 1101. ROOF DRAINS ROOF DRAINS Conventional Roof Drainage Systems SIZING WORKSHEET The number of roof drains for a given project can be determined by the ratio method which indicates that roof drains be installed at the minimum of one roof drain for each 10,000 sq. A simple metal or wood shroud can be mounted over the scupper to hide the roof drain hole if that is an aesthetic issue. 4 Cockpit Drains - A boat’s cockpit drains shall be capable of draining six inches of water in 5 minutes. 2 SCUPPERS When scuppers are used for secondary (emergency overflow) roof drainage, the quantity, size, location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by Section 1611. Note: This specification is provided as a general guide only. Look at the roof slope and evaluate the drainage opportunities for water to escape. For example, if you have a 1,500 sq. Scuppers are rectangular openings in parapet walls that are a minimum of 4 inches in width and height ranging from 4 to 6 inches. roofing requirements to comply with the City of Aurora Building Code and Design (for roof drain sizing) independent of primary drains/scuppers. No matter the type of drain system for a flat roof, as long as it functions correctly, this will extend the life of the roof. Information regarding drainage issues shall be shown in the framing plan, as required by, Chapter 8 of the Miami-Dade County Code. When combined with a complete drainage system, the water. all abatement to be completed by the contractor. The design of the office roof area again utilized the existing tapered insulation once it. But just ask any marine insurance company and they will tell you that the number is far too high. 2) The scupper shall be located as determined by the roof slope and contributing roof area. 4 Overflow drain to be same size as roof drain and have completely separate drain line to approved location. In no case shall overflow drains be sumped below the surrounding roof elevation unless the primary roof drain is contained within the same sump area. required primary roof drain subject to the following conditions: 1. Metered roof drains are installed on flat roof systems. Did you observe any large ponds or pond stains near drains or scuppers? ____Yes ____No : 15. roof insulation jm epdm sealing mastic acceptable wood nailer 4“ (100 mm) minimum note: jm epdm membrane detail shown for wall flashing applied first. Have emergency secondary drains, where an interior drainage system is used. While each drainage system will be different, to best accommodate the roof it drains, there are only two primary drainage systems that are suitable for commercial flat roofs or low slope roofs: 1. Other than the baffle, a siphonic roof drain has the same features as a traditional roof drain including a. jm epdm bonding. The pan shall have a depth of not less than. Tarco does not practice architecture or engineering. Stormwater Drainage Design for Parking Lots Course Outline Parking lots can be seen almost everywhere, from shopping centers to office buildings to schools. It's a small building and a single 3" drain pipe is sufficient, but we are providing two scuppers for primary roof drainage. The secondary roof drainage system can be of two methods— roof scuppers, open sides of parapet walls, or secondary roof drains. If this drain gets plugged, however, then the water is supposed to go out through the scupper. Though this project was relatively small in scale, this 17,500 square foot roof area proved a worthy test, with multiple levels and complicated logistics. 1 secondary roof drainage not required; figure 1108. Scuppers have one of two functions: they are either a part of the primary drainage system, or they are a part of the secondary (overflow) drainage system. Design the primary roof drain system for a rainfall intensity of 4. Not only will pounding water accelerate the deterioration of most roofing systems and void most warranties, but can result in structural damage or failure causing major property losses and possible loss of life. roof drain elbows and roof flashing (tar and felt) contain hazardous material. If this drain gets plugged, however, then the water is supposed to go out through the scupper. Part Number Configurator SPECIFICATION: MIFAB Series R1150 combined roof drain and secondary overflow system, consisting of a one piece lacquered cast iron roof drain body with integral sump receiver, cast iron waterproofing membrane clamp rings with integral gravel stops, one 2-1/2" (64) high integral cast iron overflow standpipe and two self-locking metal dome strainers with a free area of. (HVHZ 1514. If scuppers are primary drains, they are installed around the perimeter of the roof at low points. It's very short and to the point. Parapet Scuppers: Fabricate scuppers of dimensions required with closure flange trim to exterior, 4-inch-(100-mm-) wide wall flanges to interior, and base extending 4 inches (100 mm) beyond cant or tapered strip into field of roof. That thickness has to be accounted for in the wood nailers when developing the roof edge detail as well as in wall flashing heights and curbs. 304 Downloads. A side OF, or scupper in the United States, is commonly used as an emergency overflow for flat roof drainage systems. My question is that if we provide a secondary, or overflow scupper, and this is elevated like 2" above the primary drain, can this drain be tied into the main drain stack below the roof?. Scuppers shall not have an opening dimension of less than 4 inches (102 mm). 4 Flat roof slopes shall be a minimum of 1/8 inch/foot to the roof drain. Sign-in required. Internal drains can be customized for the climate and help block debris. We will provide a diagram to show you how it works. 1 Primary Roof Drainage Roof areas of buildings shall be drained by roof drains or scuppers unless gutters and downspouts or other non-plumbing drainage is provided. Generally, nonirrigated assemblies are strongly preferred, even - though they preclude the use of certain, otherwise acceptable, plant species. roof surface, since the sharp edges of a snow shovel or snow blower can cause roof damage. One leak testing method that is being used more and more in vegetated roof applications, as well as plaza waterproofing, is electric field vector mapping (EFVM). Saddle: a relatively small raised substrate or structure constructed to channel or direct surface water to drains or off the roof. 11 and CBC 1503. New Roof Drain Detail 12. provisions for the design of roof scuppers as primary roof drains, the Chief Plumbing Inspector has determined that a scupper with an attached downspout is also permitted. the roof drain with a tapered insulation system sloped at ¼-inch per foot and 2-inch minimum at the roof drain will be 14½ inches thick at the roof edge. Standard Sheet Metal Engagement Details 4. Secondary (emergency) roof drain systems shall have piping and point of discharge separate. (see detail 2/a5) s2 existing monolithic concrete scupper. 2 SCUPPERS When scuppers are used for secondary (emergency overflow) roof drainage, the quantity, size, location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by Section 1611. There is very restricted space on the ground on the drain side of the roof slope (lots of ground-mounted electrical equipment), and so locations for scuppers are limited, too. roof cricket with slope to match roof, refer to detail #3, this sheet. Product Version: Revit MEP 2014. designs shall include the depth and volume of storage, details of outlet devices and down drains, elevations and details of overflow scuppers, and emergency overflow provisions. Each bi-functional drain has two outlets, one that is connected to the primary storm drainage piping and one that is connected independently to a secondary storm line or preferably piped outside the building where. 19 Could a Scupper be Used as a Primary Roof Drain? Where required for roof drainage, scuppers shall be placed level with the roof surface in a wall or parapet. Secondary roof drainage shall be provided by an open-sided roof or scuppers where the roof perimeter construction extends above the roof in such a manner that water will be entrapped. Abbreviations. Primary drains are to be sized per Table P1106. Our lite drainage drain is based on the industry's common practice of making different size drains with one size body. The primary function of the drainage systems is to prevent the retention of water on the roof by removing water from the roof as quickly as possible. Section 1101. These drains are distinguished by having higher rims. Other than the baffle, a siphonic roof drain has the same features as a traditional roof drain including a. A flat roof drainage system can include gutters, downspouts and scuppers – openings through the perimeter walls that let water to drain into the exterior downspout. It is also specified that this should occur as quickly as possible to prevent damage. Balcony drainage Timber balconies and terraces (Revised October 2018) NHBC Standards Chapter 7. Choose from a wide variety of general purpose floor drains, light commercial roof drains, cleanout access covers, dome strainers and replacement grates. roottop air conditioning unit - refer to. Two Way and Four Way Systems. Scuppers are ideal for horizontal drains with free waterfall, terraces / decks, flat roof, box gutters, parapets and roofs with vertical walls angled at 90°, covered with roofing. become trapped if the primary roof drainage system failed to provide sufficient drainage, an independent secondary roof drainage system consisting of scuppers, standpipes, or roof drains shall be provided. In all cases it is important to properly detail and install the edge conditions. ” We are going to give you some marketing and housing stats this month and some tips for pricing your home to sell. , any roof where the drainage system is impeded by parapets, or any other physical obstructions capable of accumulating more than 1 inch of standing water on any part of the roof when the primary or the secondary (drains or scuppers) means of drainage is blocked by debris, snow or ice. The International Code Council (ICC) is a non-profit organization dedicated to developing model codes and standards used in the design, build and compliance process. Indicate roof drains and emergency roof drains/scuppers with the areas they impact. 187 Downloads. If rainwater cascading down your. Any advice please. When it comes to design, we've got the tools to get you from the desk to the roof. 5 Roof Drip Edge Addition: asphalt shingles. The overflow drainage system is intended to function independently of the primary system and to drain water from the roof if the primary drains and scuppers become blocked. Your Trustworthy Roofing Contractors. Watch this video on the cutting away of the edge of a roof to lower it to create a scupper that drains into a gutter. Part Number Configurator SPECIFICATION: MIFAB Series R1150 combined roof drain and secondary overflow system, consisting of a one piece lacquered cast iron roof drain body with integral sump receiver, cast iron waterproofing membrane clamp rings with integral gravel stops, one 2-1/2" (64) high integral cast iron overflow standpipe and two self-locking metal dome strainers with a free area of. ’ Unlike conventional drainage, a fully engineered siphonic roof drain system prevents air from entering, allowing the pipes to be completely full of water. Place the Pop rivet tool over the shaft of the rivet and squeeze the handle once or twice to compress the rivet and break off the stem. Abbreviations. The primary considerations in designing a roof drainage system are: The amount of rainfall landing on the roof membrane; How long it rains. They are rectangular holes in the wall of the parapet. 3 size of scuppers. 1 secondary roof drainage not required; figure 1108. Look at the roof slope and evaluate the drainage opportunities for water to escape. all abatement to be completed by the contractor. Often scuppers are used as overflow protection. (2) High wind roof coverings. If membrane is less than 10% of the entire roof or two roof squares (whichever is smaller), it can be installed by a D-Roof Shingles licensed contractor on shingle projects that have some low-slope areas (porches and patios, for example). Secondary(emer-gency) roof drains or scuppers shall be provided where the. City of Glendale. Watch this video on the cutting away of the edge of a roof to lower it to create a scupper that drains into a gutter. Product Version: Revit MEP 2014. 2 FBC The following applicable statements are required to be completed when applying for commercial re-roofing permit applications. • Design all roof drains and overflow drains in a depressed sump. Emergency overflow drain required for each roof/deck area. Year Last Roof Installed: 2002 # of Drains: 1 primary & 1 overflow scupper 2” X 8” Current Design Life (years): 10 Size of Drains: 6” Life Remaining (years): 0 to 1 # of Scuppers: 3 Building was Built (year): 2002 Size of Scuppers: 8” X 8” Primary Scuppers Roof Access: Roof hatch Wall Height above Ground: 15’ to 16’. The primary considerations in designing a roof drainage system are: The amount of rainfall landing on the roof membrane; How long it rains. It's only takes 20 minutes. After the latest round of updated cost estimates for the $94 million school project showed a $2. EPDM rubber roof coating information: Special coatings for EPDM roofs using silicone, latex, or acrylic paints or sealants are provided by a number of manufacturers. 3 Roof Drain Flashing New Section Number N. Any advice please. ROOF DRAINS ROOF DRAINS Conventional Roof Drainage Systems SIZING WORKSHEET The number of roof drains for a given project can be determined by the ratio method which indicates that roof drains be installed at the minimum of one roof drain for each 10,000 sq. HOLLY STREET STUDIO ARCHITECTS N. Scuppers are rectangular openings in parapet walls that are a minimum of 4 inches in width and height ranging from 4 to 6 inches. Yet home experts say that roofs are often one of. 1 Roof Scuppers or Open Side. STEP 2 Invert roof drain on a solid surface, invert bearing pan and lay over roof drain flange. LABORATORY SYSTEMS. Note excessive debris on the roof. A considerable amount of water can accumulate before it is noticed. Metal Valley Flashing OK Replace Repair N/A 6. Re: Flat Roof Drains and "too much" insulationif I am reading it corret 2006 IRC R903. Watch this Video on explaining flat roof drains. Could a Scupper be Used as a Primary Roof Drain? Where required for roof drainage, scuppers shall be placed level with the roof surface in a wall or parapet. Blocked drains and mounds of gunk dam the natural flow of water, creating this scenario. Good roofing practice includes primary and secondary scuppers that act in an emergency. 1 All manufacturer roofing warranties shall be. Drain Flashing Problems– A roof’s drainage system includes the eavestrough, leaders, drain openings and scuppers, as well as the slope provided by the structural deck, tapered insulation, crickets and sumps. Enpoco Series RD-27 Parapet (Scupper) Drain with oven cured epoxy coated cast iron body, flashing clamp and secured epoxy coated angled grate. Central Avenue 602307 5677 Fax CMU2 3 22'-0" Furniture and equipment is shown for reference Paint all exposed steel, PTG 1 FFE= 1231. Made from lightweight recycled materials, GreenSlope can be applied to the roof surface to fill low areas where water pools in flat rooftops. Primary drains are to be sized per Table P1106. affect structural safety and lead to a roof collapse. The BS 6229 standards. Facility managers and business owners often have a lot on their plates at once, and keeping their employees and customers comfortable is usually a primary concern. These enclosures should. , any roof where the drainage system is impeded by parapets, or any other physical obstructions capable of accumulating more than 1 inch of standing water on any part of the roof when the primary or the secondary (drains or scuppers) means of drainage is blocked by debris, snow or ice. Select Changes in the 2012 WA State Building Code. Note that there are some scuppers on one low roof area only. • Clogged drains and gutters. Their size depends on the roof area, the numbers of roof sumps used on the roof, the drainage outlet size, and the location of the sump on the roof. Part Number Configurator SPECIFICATION: MIFAB Series R1150 combined roof drain and secondary overflow system, consisting of a one piece lacquered cast iron roof drain body with integral sump receiver, cast iron waterproofing membrane clamp rings with integral gravel stops, one 2-1/2" (64) high integral cast iron overflow standpipe and two self-locking metal dome strainers with a free area of. ___Does rainwater from roof valleys, downspouts, scuppers, or other. Material & Characteristics Bodies - Industrial grade cast iron, finished with Watts standard gray acid resistant epoxy coating. (HVHZ 1514. Roof Drainage Components. Login or Join to download. The first of the three are internal drains, then scuppers, and then gutters and downspouts, which are considered one drainage aspect. 1 Secondary (emergency overflow) drains or scuppers. Right after an especially intense rain, you get a call. The overflow drain system shall consist of overflow drains installed. If this drain gets plugged, however, then the water is supposed to go out through the scupper. A scupper is a through the wall outlet. Watch this Video on explaining flat roof drains. Gutters, drainage points, and scuppers are all important parts of a commercial roofing system because they help pull water off and away from the roof. The factors which affect proper roof drainage are deck slope, drain flashing, size and placement of drains. The scupper usually will interrupt deck reinforcement. Several examples are given below. Installing a Scupper on an EPDM Roof. Your Trustworthy Roofing Contractors. • One and two-family dwellings may drain to the street or lawn, provided it flows away from the building. The unique 90° angle of our parapet roof drains enables them to fit snugly in place while making economical use of space. CAD Drawings are provided as reference-only representations of the product. When placing roof drains it is good design practice not to locate the drains more than 50 feet from the roof perimeter or more than 100 feet apart. Grating Specialist: We carry all types of roof drains, re-roof drains, overflow drains, retrofit drains, balcony drain, deck drains, floor drains, roof drain accessories and scupper drains as well as replacement roof drain parts. Abbreviations. Secondary roof drainage shall be provided by an open-sided roof or scuppers where the roof perimeter construction extends above the roof in such a manner that water will be entrapped. Typically, a low slope roof is designed with one primary roof drain and one secondary roof drain -- or overflow scupper (drainage outlet). 6 - B3030 Projections Sun control devices, balcony walls/railings. Look at the roof slope and evaluate the drainage opportunities for water to escape. We will provide a diagram to show you how it works. The water runs towards the south side of the roof and is caught into a gutter and series of downspouts that direct the water underground and into a storm water catch basin system. Select Changes in the 2012 WA State Building Code. , 551-A Pylon Drive – Raleigh, NC 27606 February 2015 scuppers that will be modified for reuse, cut opening to match size and elevation of new scuppers and install wood blocking at bottom of original opening to match insulation height. Contact the jurisdiction involved for any or all of the above regulations. "The scupper is supposed to be like 1 inch above the main drain. Jobsite conditions, contract specifications and/or other documents may require changes to the general guide. (emergency) roof drainage shall be provided by one (1) of the methods speci fied in Section 11 01. Each bi-functional drain has two outlets, one that is connected to the primary storm drainage piping and one that is connected independently to a secondary storm line or preferably piped outside the building where. The main benefit of the Scupper Drain is the flexibility of application; they can be used as both primary and secondary overflows. Over the life of the building this may be less expensive than providing tappered insulation each time the roof is replaced. The overflow scuppers are installed close to the primary drainage level, which spill out occasionally onto the building facade.