Roof framing in this chapter, we will introduce you to the fundamentals of roof design and construction. Some roofs actually slope in several directions, ensuring optimal water runoff. Download our solutions guide download our flat roofs pdf. The practices herein contained represent a consensus of opinion of roofing contractors throughout the country. Standard glass roof light cad drawing references for flat roofs, flush, box, sliding, smoke vent and access roof lights. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. Free architectural cad drawings and blocks for download in dwg or pdf formats for use with autocad and other 2d and 3d design software. In this type of construction the insulation is placed below the waterproof covering and on top of the roof deck and vapour barrier. By providing information on the design, materials, construction and maintenance of successful flat roofs. It dealt in detail with flat roof constructions and can be regarded as one of the first guidelines for such roofs fig. Our flat roof insulation solutions provide both excellent fire and acoustic performance in addition to high levels of thermal performance. You can do this with a foam layer that exactly fits your roof. Typically they are designed to have a minimum fall of 1. Airtightness page 7 very good levels of airtightness are required for all flat roof constructions.
Flat slab analysis, design and detailing pdf civil engineering. Put simply a warm flat roof has insulation of some kind packed into every available void and a cold flat roof allows air to circulate between the joists. This is the english edition of the technical manual for the design and construction of roofs of stainless steel sheet published by japan stainless steel association in 1985 to promote the use of stainless steel sheet roofing in japan, with a commentary on. Roofing felt is one of the more popular and traditional methods of creating a flat roof. They must be carefully designed and installed to provide the appropriate performance and life expectancy. This air is vented at either end of the roof to allow a continuous air flow. Flat roof construction how to build a flat roof flat roof. A cold roof design is not generally recommended for new build. See chapter 26 for a complete discussion of roof framing terms. Flat roof designing buildings wiki share your construction industry knowledge.
Expansion joint roof to wall paraguard expansion joint roof to wall wall with selfterminating parapro flashing. However, it wasnt particularly longlasting or durable, so torchon felt was created. Roof vent technical drawings pdf and dwg formats for. That will help you remember certain factors and details to build the best possible flat roof. Discover other popular velux ranges and sectional drawing packages. Roof flashing details index fd01 interior roof drain detail fd02 interior drain with gravel stop detail fd03 scupper roof drain detail fd04 gutter roof drain detail fd05 roof top equipment curb detail fd06 roof top metal air shaft curb detail fd07 roof top wood air shaft curb detail fd08 roof skylight detail fd09 roof top chimney pipe detail. Householders guide to flat roofing in a flat roof, the waterproofing is always supported by a structural roof deck. Wall with selfterminating paraflex 531 liquid flashing. Chapter 8 construction details progressive materials. Beyond quality materials, proper application is the key to the successful performance of any roofing system. Certainteed flintlastic modified bitumen roofing products represent the finest in quality roofing materials. The ceiling, if any, is usually fixed directly to the underside of the joists. Guidance on detail design is given by accredited construction details.
Hold your cursor over the file name to view when a drawing was last updated. Glass rooflight cad drawing references glazing vision. A flat roof is a roof that is completely, or almost level. The flat roof shown above shows warm deck roof construction. In addition to being used in residential construction, the. The standard roof edge details illustrated in this section are generally applicable.
By downloading and using any arcat cad drawing content you agree to the following license agreement. Flat roof construction how to build a flat roof flat. These drawings are also an integral part of the epdm technical manual, chapter 5 pdf. This pdf file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. Flat roof construction manual materials design applications. Choosing a flat roof how to find the best options for your commercial roofing project.
Rooftowall and decktowall flashing 1 of 3 home builders guide to coastal construction technical fact sheet no. The fibreglass is made from a mixed resin and hardener which is painted onto a mesh mat which then hardens to form a fully waterproof surface. Flat grain and limited sapwood are permitted in this grade. However, whilst they are described as flat almost all flat roofs are actually laid to a fall to ensure that rainwater can run off to the lower side. Available in pdf and dwg formats for download or print. Parts of a roof a ridge board is a horizontal member of the roof frame. Construction materials will differ depending on the pitch of the roof. Qltd010 cavity wall eaves detail 10 qltd011 flat roof abutment 11 qltd012 monopitch roof abutment 12 qltd0 solid wall cill detail qltd014 solid wall window reveal detail 14 qltd015 solid wall lintel detail concrete 15. Our technical experts are on hand to advise and assist you at the design and specification stage.
Location page 5 factors such as the amount of sunshine, temperature, surrounding buildings or wind affect a flat roof and need to be considered. Roof windows and skylights openings free cad drawings. Active ventilation click to view drawings for all of our products. Flat roofs are a familiar sight throughout north america. The specification and design process is critical to ensure longterm, good quality roof protection that meets the requirements of building regulations. Definition of roofs slopes flat roof a flat roof is defined by having a roof pitch below 1. Lightning protection system roof mounted curb with adhesiveapplied flashing. Pdf and dwg drawings are readily available for the velux flat roof range including flat, curved, kerbed installations and rooflight domes. This standard details manual, aka the blue book, is the right tool to have at your fingertips. Flat roofs are always built at a slight incline, at least 18 inch per foot. From the start, youll likely have questions, including.
Of course, flat roofs are not flat but have a very slight roof pitch of between 14 to 12 per foot. Flat roof construction types thermal design 1 manchester university warm roof. Construction details are provided for the following spf roof system types. If an existing cold roof is to be refurbished, consideration should be given to converting the design to a warm roof, or. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. Hip and valley roofing the text provides subject matter related to more detailed hip and valley roofs. Flat roof under tiled roof termination cad pdf cad dwg. Falls create flow paths to direct the drainage of rainwater away from the roof to suitable discharge points. Chapter 8construction details provides technical information concerning the design and installation of construction details for quality spf roof systems. Better airflow performance is achieved through attention to engineering detail including damper curvature, hood size and collar placment. The ceiling joists are used as the platform for the roof coverings. Wcd1 details for conventional wood frame construction.
Aug 14, 2017 flat roof construction manual materials design applications. Flat roofs the flat roof is a very common style in areas with little rain or snow. Download sectional drawings for velux flat roof solutions. Builtup roofs have solved the low pitch roof problem for ages, a challenge that asphalt shingles could never handle builtup roofs are installed using several layers of a special type of roofing felt that has been asphalt impregnated and embedded in bitumen applied with a hot mop. Flat roofs have a reputation of failing early but improvements in strength. A significant environmental improvement to roofing applications has been the invention or adoption of green roof practices. Also for exposed fastener panels, wall panels, tiles, soffit, fascia, copping. It dealt in detail with flat roof constructions and can be regarded as one of the first guidelines for such roofs. When framing a flat roof, you will need to create a slight incline. Roof plans and elevations the details below show the position of the hips, ridges, valleys and elevations for l and t. This is usually a timber boarding of some type, which in turn is supported on joists.
The fall of the roof is achieved by using firring pieces, with a fall of 1 in 40. Although simple and utilitarian, the main goal of a roof system is to maintain the watertight integrity of a building and keep its contents dry. Often the flat roof has a slight pitch in the rafters. This handbook of accepted roofing knowledge is designed to provide designers, specifiers, owners, consultants, and roofing contractors with information pertinent to the design and installation of quality roof systems. The flat roof is economical to construct because ceiling joists are eliminated and rafters are used to support both the roof and ceiling loads. Going back about 120 years, the grandfather of flat roofs is the builtup roof or bur. It must provide adequate protection against the elements, keeping the buildings structure and interior dry.
Felt roofing, also known as tar paper, is traditionally installed using hot bitumen to create a secure bond between the roof and the felt. Green roofs are installed over a modified version of more conventional flat roofs, and are normally comprised of a system that is sold by several green roof manufacturers like soprema. Although modern membrane materials are generally unaffected by standing water, it is good practice to design an efficiently drained roof. Because of the wide variation in detailing, this section will not. The detail drawings are grouped by detail type and can be downloaded below in dwg or pdf format. Cad details document name pdf dwg download all cad construction details 37.
Flat roof a flat roof is defined by having a roof pitch below 1. Fibreglass flat roofing, also known as grp roofing or glassfibre reinforced plastic roofing. We are confident that our products will give trouble free. A selection of roof detail drawings including flat roof details, pitched roof details, mansard roof detail, parapet, verge, ridge and eaves details. Common roof shapes include flat, shed, gable, aframe, gambrel, hip, dutch hip, and mansard. Framing a roof berlinboylston regional school district. This introduction is intended to supplement the special notes on the individual construction details. Our patents mean that other conventional roof windows do not share many of our extraordinary features. This will help you create a flat roof framing plan. Roof frame plan roof frame plan details the rafters and the spacing of the roof. Curb, curb rest, nailer, and gasket only, furnished by york. Here you can find our cad drawings, available to download in pdf or dwg format.
Very good levels of airtightness are required for all flat roof constructions. Cad details openings 08 60 00 roof windows and skylights. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. By knowing you have access to all of the right information from proper storage and installation instructions to trim and flashing details, you can be confident installing your fabral materials.
128 1063 1208 603 73 1006 107 1442 688 1076 844 1150 534 904 310 348 809 1378 923 263 881 1022 117 396 439 617 1112 442 643 350 958 1272 583 807