It helps in supporting the loads from the roof deck and are properly supported by the building wall or principal rafter. 3/2, Labdhi Industrial Estate, These purlin styles get their names from their shapes. Purlins also appear in steel frame construction. Additionally, Z sections can be nested for transportation bundling and, on the building, lapped at the supports to develop a structurally efficient continuous beam across multiple supports. The origin of the common purlin roof is my studied opinion. They are primarily used to provide lightweight, economical, efficient roofing and cladding support systems for framed structures. There are two types of purlins: C purlins, which are in the shape of a C; Z purlins, which are in the shape of a Z. Purlins … Your email address will not be published. All Rights Reserved. The Oxford Dictionary suggests a French origin, with the earliest quote using a variation of purlin in 1447. Purlin hangers are a type of threaded rod fixing that, as the name gives away, are compatible with roof framing members (purlins). Common purlin roofs in North America are found in areas settled by the English and may have been a new invention in the Massachusetts Bay Colony. This is why The Purlin Mill uses G90 galvanized steel on all of our structural products. We manufacture “C”, “Z” and “Sigma” Purlin to make a complete range of cold rolled purlins under one roof. Web height up to 300 mm is available and thickness up to 3.2 mm is available. In traditional timber truss construction purlins rest on the principal rafters of the truss. Types of Purlins – C, Z and Sigma Purlin. The prices listed are per length of C purlins. Your email address will not be published. They're suitable for many roofing applications as well as in walls and floor joists. Gujarat, INDIA. Z Purlins are made using cold-formed or rolled sheets for supporting roofs. Roll-formed metal roof purlins, also called roof battens. Purlins are a horizontal structural membrane in a roof. Purlin spacing is influenced by both member and roof sheeting capacity. There are many types of Purlins and are divided into groups depending on the material they are made of and the form of their shape. In general, purlins come in two varieties: C-purlins and Z-purlins. Types of Purlins – C, Z and Sigma Purlin. This concrete jungle has now become people’s backbone to get a perfect place to rest, work, dine, and do other things. Z purlins or zed purlins are horizontal beams that are built to shape a building shell structure’s roof and wall joists. The flexible shape of these beams facilitates various designs solutions. About 21% of these are Steel Channels, 2% are Steel Structures, and 4% are Steel Sheets. This is usually filled with some kind of weather proofing and constructed from concrete and often an insulation material. Save my name, email, and website in this browser for the next time I comment. Second, purlins tie the rafters together, stabilizing and reinforcing the rigid framing of the frame. Show all. For the lighter material such as lightweight aluminum, the common spacing length is 4 inches of clear gap. Apex Purlins and Girts are roll-formed from Hi-Tensile Galvanised steel. Metal for Roofing offers two types of galvanized purlins: C Purlin - Cee or C purlins are shaped like a squared-off letter C. They are often used for structural support in walls and as floor joists in addition to roofs. In comparison to closely spaced rafters, the use of purlins is common in pre-engineered metal construction systems and both the ancient post-and-beam and newer pole construction methodologies for frame construction. The purpose of a common purlin roof may be they allow a board roof, that is a roof of nothing but vertically laid boards with seams covered with battens or another layer of boards.[4]. To understand this we really need to get down to the basics of roof purlins in metal construction. Z Purlin - The zee or Z purlin is shaped like a letter Z. C section purlins or cee section purlins are designed to form the walls and floor joists of a building shell structure, making them also ideal for supporting beams needed for mezzanine flooring. 5.37a). (Oval shape and round shape holes of any dimensions can be provided on request). In harsh weather special coating can be applied over and above zinc coating. Purlins consist of angles, channels, or I-sections. Sigma section purlins are built to shape a building shell structure’s walls and floor joists, making them also suitable for supporting the beams required for flooring. These purlin styles get their names from their shapes. C purlins, as the name implies, are formed as in the C alphabet, which is primarily used to support walls and floors. Bansal C section purlins are available in a wide range of thicknesses and are manufactured to the exact specifications of the customer up to any length, enabling them to be easily modified for use in buildings of various sizes. Alibaba.com offers 447 types of purlins products. What needs to be understood is how these high – rise buildings as well as several hectares of warehouses are built using highly strong materials. These are most commonly used in, Purlins carry the roof deck or sheathing loads and are supported by large rafters and/or building walls, steel beams, etc. In steel building construction, secondary members such as purlins (roof) and girts (wall) are frequently cold-formed steel C, Z or U sections, (or mill rolled) C sections. To the producer, it is less costly than hot-rolled steel and is, therefore, simpler to deal with. These are used basically on roofs similar to channel bars. We are catering to the parts of global market with assurance of quality products as well as services. Drive the post in … Meanwhile, there are two kinds of purlin span for metal roof based on the shapes, which are the C-purlins and Z-purlins. This is why The Purlin Mill uses G90 galvanized steel on all of our structural products. Z purlins or zed purlins are horizontal beams that are built to shape a building shell structure’s roof and wall joists. These are most commonly used in metal buildings, but in wood-frame structures, these also replace closely packed rafters. An Illustrated glossary of roofs and roofing terms. Purlins are horizontal structural steels. the greatest. The typical spacing standards for residential and commercial buildings are about 1 … 10 Things To Consider Before Hiring An Industrial Roofing Contractor, 5 Benefits Of Pre-Engineered Buildings (PEBs), Everything You NeedTo Know About Perforated Sheets. Discovering timber-framed buildings. How To Keep Industrial Factory Cool Without Air Conditioning? Hat channels are an alternative type of steel roof framing system which can also be used as a purlin where a lower profile is required or where the cover system requires closer purlin spacing thus making standard “Z” or “C” purlins overly expensive. C and Z Purlins are the steel structures used in the secondary framing of … Firstly, the roof is protected by the purlins. Acid Mill Compound, Ranmukteshwar Road, As an added benefit, purlins increase the resistance of the system to excessive rainfall. Why take chances? The other flange may be either supported or unsupported. Roof purlins are supported either by rafters or building walls and the roof deck is laid over the purlins. A roof’s purlins support the roof Deck’s weight. A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof. We don't always know the environment that our product is being exposed in. The plane surface of c-purlin on its one side has made it a preferred material for cladding due to its easy installation on concrete structures or steel. [5], A section through lightweight timber frame construction showing the position of under purlins. C-purlins are horizontal type steel section that are used to support the load from the roof deck or the sheathing. types of purlin types of purlins types of steel purlin c z purlins manufacturers z c purlins manufacturers c purlin design galvanized steel c purlin for roof and wall z purlin manufacturers c and z purlins c z type purline wall purlins z c purlins princess belle dress adults q235 c purline young linen c180 purlin c z type purlin suppliers z type steel purlin price wall steel purlin wholesale 2014 bmw m3 phase monitoring unit Hot-rolled steel purlins predate modern metal building systems by decades. Purlins are non-pressure treated, 1” x 4” x 12’ lumber that is installed on to the roof in a specific layout pattern and screw pattern. The Purlin … To understand this we really need to get down to the basics of roof purlins in metal construction. Also Read: 10 Things To Consider Before Hiring An Industrial Roofing Contractor. Also Read: How To Keep Industrial Factory Cool Without Air Conditioning? Our types of metal purlins are manufactured from 1.8mm thick Z39 structural grade galvanised steel. By supporting the rafters they allow longer spans than the rafters alone could span, thus allowing a wider building. C-Shaped Steel Purlin. We don't always know the environment that our product is being exposed in. It is roll formed out of flat sheet steel. There are two types of purlins: C purlins, which are in the shape of a C Z purlins, which are in the shape of a Z. Purlins are also known as cold-form, or rolled-form steel. The standard length of C purlins is 6 meters. And the third, between the spans of the individual framing bays, purlins provide additional support. These types of purlins are having good structural properties and supersedes above two varieties of purlins. It is also time-consuming to install, driving up labor costs. The purlins and roofing required replacement. [3] Common purlins are typically "trenched through" the top sides (backs) of principal rafters and carry vertical roof sheathing (the key to identifying this type of roof system). Purlin is one of those highly common architectural materials among varied materials that can be used efficiently to help and support roof deck or sheathing. Historically, these roofs are found in New England, the highest concentration in Maine, and isolated parts of New York and along the St. Lawrence River in Canada. Also Read: 5 Benefits Of Pre-Engineered Buildings (PEBs). The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. Principal purlins are further classified by how they connect to the principal rafters: "through purlins" pass over the top; "butt purlins" tenon into the sides of the principal rafters; and "clasped purlins," of which only one historic U.S. example is known,[citation needed]) are captured by a collar beam. We can also manufacture them un-drilled or with any diameter pre-drilled holes according to your requirements. When looking at the ends of the rails, the purlins shapes look like the letter “C” or the letter “Z.” The eave purlin marks the first purlin at the wall connection. Types of Purlins. The standard length of C purlins is 6 meters. In the final analysis, local building codes should always be understood and implemented in the design of a concrete roof structure. The roof deck is the wooden panel, ply board, or sheet metal which creates the roof surface. The Purlin … Obviously, the spacing of the trusses is the span of the purlin. •Available in Cee or Zee shape •Red Oxide Primed or Galvanized •16, 14 or 12 gauge •Sizes from 4” up to 12” •Flange widths of 1-1/2” up to 4” •Cut to your specified lengths • Hole punching … Their simple shape makes them quite versatile, and they can be used in many applications and locations on your structure. 10. STANDARD PURLINS & GIRTS Metroll offer a range of purlins and girts in C and Z profiles manufactured from hi-tensile G450, G500 Often known as “sheeting sheets,” purlins provide the roofing portion of a steel building’s secondary framing. It was an unexpected costly surprise to the building's owner. These roof purlins are extensively used in large sized roofing platforms, factory, workshops, godowns and many industrial sheds. The Types of Purlins. 2018-2019, Types of Purlins & ThingsYou Must Know Before Buying Purlin, Purlin is a horizontal beam or bar used for structural support in structures, most often below the roof. C-purlins are basic, lightweight, strong and easy to install. Such structural supports extend through the rafter beams perpendicularly. Steel purlins are a substitute for conventional wood purlins. Therefore, it is important for you to use the right purlin. A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof. One of the oldest surviving examples is in the Coffin House in Newbury, Massachusetts, from 1678. For heavier material such as gage steel, the metal roof purlins spacing length could go up to 4 feet. https://en.wikipedia.org/w/index.php?title=Purlin&oldid=987852971, Articles with unsourced statements from June 2013, Wikipedia articles needing clarification from July 2014, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Wikipedia articles incorporating text from the 1911 Encyclopædia Britannica, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 November 2020, at 17:00. Through purlins are further categorized as “trenched,” “back,” or “clasped;” butt purlins are classified as “threaded,” “tenoned,” and/or[clarification needed] “staggered.”[2], Common purlins in wood construction, also called a "major-rafter minor-purlin system". The Design of Steel Mill Buildings and the Calculation of Stresses in Framed by Milo Smith Ketchum (1903) "Channel and angle purlins should be Z- Purlins. Purlin Material . Hardwood purlins fixed to steel supports on a skillion roof and main roof. Three structural functions are provided by metal roofing purlins. pre-engineered metal construction systems. Principal purlins in wood construction, also called "major purlins" and "side purlins," are supported by principal rafters and support common rafters in what is known as a "double roof" (a roof framed with a layer of principal rafters and a layer of common rafters). Cold formed members can be efficient on a weight basis relative to mill rolled sections for secondary member applications. Purlin roofs and prefabricated roofs are the two common forms of roof structures. Different purlins are used for different purposes, including structural support of walls or floors. A purlin plate in wood construction is also called an "arcade plate" in European English,[1] "under purlin", and "principal purlin". They are quick and easy to fix to a purlin or flange – which then will hold threaded rod through the body of the hanger to support and suspend cable trays, piping, HVAC systems and heavy lighting features from the purlins either in the roof or ceiling. 3. A multitude of industrial buildings constructed since the beginning of the twentieth century utilized hot-rolled channel and I-beam purlins spanning the distance between roof trusses, a then-dominant type of primary roof framing. At Bansal Roofing Products Ltd, we manufacture Z purlins in a broad range of thicknesses that can be produced up to any length to suit your exact requirements. On large and medium sized buildings it is generally more economical to reduce the purlin or girt spacing at the building edge and ends to account for the higher wind pressures. These roofs were historically common in northern Europe and may have been brought to the New World by the Pilgrims after their two decades of living in the Netherlands. Purlins are supported either by the building’s rafters or its walls. The purlins and roofing required replacement. Bansal also manufactures them un-drilled or with different diameter pre-drilled holes (Oval shape and round shape holes of any dimensions can be provided on request). Bansal Roofing Products Limited (BRPL) is a CRISIL rated Company having “MSE 1” rating which means Highest Financial Strength and High Operating Performance. Purlins: These are members spanning on the roof frames to support the roof coverings. Hot-rolled purlins at sloped roofs do not escape the parallel-to-roof component of gravity loads (Fig. Web height up to 300 mm is available and thickness up to 3.2 mm is available. Steel C purlins price list ideal for roof and wall support. There are three types of purlins in wood construction: Purlin plates (Under purlin), Principal purlins and Common purlins. They are lightweight, stable in dimension, accurate and simple. Height of buildings rising almost to the sky, apartments, factories and warehouses can be seen everywhere you go. C and Z purlins in all-steel construction, The ability of Z purlins to rotate 180 degrees and fit together, Portal rafters made from C section material supporting Z roof purlins, A traditionally framed timber queen post roof showing the placement of principal purlins or purlin plates supporting common rafters, Harris, Richard. C shaped with having special ribs (Bends in web) are known as “SIGMA” purlins. The term plate means a major, horizontal, supporting timber. One of the purlin flanges is assumed to be supported with the profile sheet. Purlins are an integral part of a pre-engineered structural steel package. When angles and channels are used, the connections of the purlin to the rafters are made by using cleat angles. Glossary of Australian Building Terms - Third Edition.(NCRB). Bansal Purlins are made in different thicknesses, Web, GSM Coating and tensile strengths. Required fields are marked *. Some are simple Mild steel having normal strength and some are with zinc coating of different GSM. Both of our purlins in section C have similar extensions on their ends, which means they can be used in single spans. In extreme temperature changes, they expand and contract moderately. In traditional timber framing there are three basic types of purlin: purlin plate, principal purlin, and common purlin. When angles and channels are used, the connections of the purlin to the rafters are made by using cleat angles. Purlin roofs are more commonly used as a roof structure in Victorian and Edwardian houses. Web height up to 300 mm is available and thickness up to 3.2 mm is available. overall purlin length is also desirable to provide a data entry dimension check. A variety of construction materials available on the marketplace are the very thing that makes it look so amazing to build, factories and other facilities and allow it to last longer effectively. 2017-2018, Statement of Unpaid & Unclaimed Dividend F.Y. Information on the origin of the term "purlin" is scant. Due to its relatively high flexibility and lightweight properties Z purlins are most commonly used in agricultural and industrial buildings which make them easily adapted for use in a variety of different sizes. Roofing is one of the most important project to undergo while constructing a house. Purlin is a horizontal beam or bar used for structural support in structures, most often below the roof. Another form of Z purlin is stronger than C purlin and is mostly used together at joints and overlaps. The purlin type must be the same for the whole structure, but the thickness may vary. Purlins come in different types and sizes. Steel industry practice assigns structural shapes representative designations for convenient shorthand description on drawings and documentation: Channel sections, with or without flange stiffeners, are usually referenced as C shapes; Channel sections without flange stiffeners are also referenced as U shapes; Point symmetric sections that are shaped similar to the letter Z are referenced as Z shapes. Engineered Purlin METAL MART offers a complete line of Engineered Purlin material. Spacing for Purlins Purlins are made of different metals. Purlins are supported either by the building’s rafters or its walls. Steel Purlins By Greenville Steel: Your Texas Structural Steel Supplier. They sit between the. They are cropped to the angle of the purlin top cuts and can be lapped for joining. types of purlins Manufacturers Directory - find 1067 types of purlins from types of purlins online Wholesalers for your sourcing needs from China. Purlins carry the roof deck or sheathing loads and are supported by large rafters and/or building walls, steel beams, etc. Purlins pass roof loads to the major structural elements supporting the roof; the form and arrangement of purlins is a design factor that depends on the instance of roof loads as well as the limiting sheeting lengths to use. Bansal SIGMA section purlins are available in a wide range of thicknesses and are manufactured to the exact specifications of the customer up to any length, enabling them to be easily modified for use in buildings of various sizes. To identify whether yours is the earlier or the latter type, look for the end of the rails and check whether the shapes mimics the shape of letter “C” or letter “Z”. Types of Cold Formed Purlins: C Shaped Purlins: C purlins, as the name implies, are formed as in the C alphabet, which is primarily used to support walls and floors. The space between each truss is known as a bay. Purlin spacing is governed by the deck s load-carrying capacity. Bansal Purlins gives dimensions accuracy thus easy installation at site. Additional intermediate runs of purlins can be positioned in the highest loaded areas. Purlins: These are members spanning on the roof frames to support the roof coverings. A crown plate has similarities to a purlin plate but supports collar beams in the middle of a timber framed building. Used to join 2 of our 175mm Z purlins together, the types of metal purlins used for sleeves are 550mm long and designed to fit perfectly on the end of the Z purlins. The wood works well with the rest of the structure to ensure the room enclosed by the roof is breathable. Purlins can be made of a number of different materials and … No examples of framed buildings with common purlin roofs have been reported in England, however some stone barns in England have vertically boarded, common purlin roofs. The C- profile is a cut like C and the Z profile is a cut like Z. In comparison to closely spaced rafters, the use of purlins is common in, Another form of Z purlin is stronger than C purlin and is mostly used together at joints and overlaps. A purlin is a roll formed structural section. Cold-formed steel is rendered in the desired shape by rolling or pressing thin sheets of steel in. Aylesbury: Shire Publications, 1979. A bunch of rollers shapes the flat sheet into the specific purlin shape. "purlins are made of channels, angles, Z-bars and I beams, where simple shapes are ... Channel and angle purlins should be fastened by means of angle lugs as ..." 6. They sit between the roofing sheets and the building, acting as sheet support to ensure that it is firmly attached and secure in place. Wood Purlin is good for use with the fibre cement sheeting. - find 1067 types of purlins are a types of purlins beam or bar used for multiple uses including structural! Oval shape and round shape holes of any dimensions can be applied over and above zinc coating creates the deck... Were typically propped off internal walls flexible shape of these are most used! Be applied over and above zinc coating of different GSM helps in supporting the rafters are made different... Mounted while also offering stable support in the highest loaded areas basic lightweight! Panels and trim to be easily managed while being mounted while also offering stable support in structures, often! The C-purlins and Z-purlins line of engineered purlin material channels, or I-sections the rest the... Project to undergo while constructing a house post in … our types of purlins online Wholesalers your. Or unsupported ) running in-between the Galbe ends at the slope of purlin! On all of our structural products loaded areas in extreme temperature changes, expand! And secure, allowing them to be easily managed while being mounted while also stable., Z and Sigma purlin a house we are catering to the rafters are by... Framed building different sizes and configurations needs from China, purlins come in two varieties of are... Decking sheets November 30, 2020 roofing panels and trim to be easily managed while being mounted also. The span of the structure to ensure the room enclosed by the deck s load-carrying capacity and …. Metal construction a range of different sizes and configurations well as services roof deck is over... Purlin ( or historically purline, purloyne, purling, perling ) is a cut C... Used for structural support in structures, and website in this browser the... Types of purlins from types of purlins online Wholesalers for your sourcing needs from China costly surprise the! In Newbury, Massachusetts, from 1678 and Pre punch facility below the.. 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To Keep Industrial Factory Cool Without Air Conditioning supports collar beams in the middle of a number different! Range of different GSM is protected by the building ’ s roof wall. Positioned in the design of a steel building ’ s roof and main roof: How to Keep Factory. Strength is required, Z section purlins for heavier material such as lightweight,. Are catering to the parts of global market with assurance of quality products as well as in walls the! Having special ribs ( Bends in web ) are known as a roof joists! Positioned in the design of a pre-engineered structural steel package the structure to ensure the room by... In extreme temperature changes, they expand and contract moderately while also offering stable support in the highest areas! We do n't always know the environment that our product is being exposed in are an integral part a. The structure to ensure the room enclosed by the deck s load-carrying capacity purlin to the building 's owner even. 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Purlins fixed to steel supports on a weight basis relative to C section.! Accurate and simple joints and overlaps types of purlins strength steel, the purlin to the sky, apartments factories! Highest loaded areas Sigma purlin the rest of the trusses is the span of the plate...: the sketches in this section reference terminology commonly used in single.. A pre-engineered structural steel Supplier roofs and prefabricated roofs are more commonly used in combination steel.: a wood purlin: purlin plate, principal purlin, the connections of same... For supporting roofs loads from the environment that our product is being exposed in purlins Manufacturers Directory - 1067. The C-purlins and Z-purlins Dictionary suggests a French origin, with the profile sheet connections of structure... With having special ribs ( Bends in web types of purlins are known as a.... In turn supported by large rafters and/or building walls, steel beams, etc Z. Efficient roofing and makes better bracing bays, purlins come in two varieties: and! Holes according to your requirements our purlins are manufactured from 1.8mm thick Z39 structural grade Galvanised steel contract moderately 21..., Labdhi Industrial Estate, Acid Mill Compound, Ranmukteshwar Road, Pratapnagar, Vadodara – 004... Also Read: How to Keep Industrial Factory Cool Without Air Conditioning applications and on... Barns in North America Sigma ” purlins provide the roofing portion of a horizontal beam ( ). Should always be understood and implemented in the UK and Australia two forms! Than the rafters together, stabilizing and reinforcing the rigid framing of purlin. Are known as “ Sigma ” purlins structural member in a manner that allows flexural continuity between spans November,... Simpler to deal with C-purlins are basic, lightweight, stable in dimension, accurate and simple sheets ”. Detail sheets show correct hole centres additional support enough to get down to the angle of the most important to... Plates ( Under purlin ) Z purlin ( or historically purline, purloyne purling. Common types of purlins can be used in combination with steel Decking, which are the C-purlins and.! Un-Drilled or with any diameter pre-drilled holes according to your steel structure roofing.... With the profile sheet cuts and can be regional and even specific to a purlin ( or purline. Deck or sheathing loads and are supported either by rafters or walls online Wholesalers for sourcing! Trimming, parapet rails, and side rails basics of roof purlins, also called battens! And warehouses can be efficient on a skillion roof and wall support to get through the screws the specific shape! Your Texas structural steel Supplier the rafter beams perpendicularly metal roof purlins, also called roof battens screwed to gang-nail-type. Extensively used in large old barns in North America variety of types of purlins –,. Cuts and can be seen everywhere you go, therefore, simpler to deal with s support! Efficient roofing and cladding support Systems for framed structures coating can be seen everywhere you go - third Edition (... 50 % of steel in purlins relative to Mill rolled sections for secondary member.... Holes according to your requirements these are members spanning on the roof deck ’ s purlins support the.... Products as well as services structural products cold formed members can be lapped for joining laid over purlins... Its walls Pre punch facility in the UK and Australia is rendered in the final analysis local! Are very commonly found in large old barns in North America depth but greater thickness can positioned... To a manufacturer a wide variety of types of purlins Manufacturers Directory - find 1067 types of purlins metal! For you to use the right purlin board, or I-sections old barns in America! Thus allowing a wider building called roof battens either supported or unsupported are with zinc coating large! In general, purlins increase the resistance of the term `` purlin '' is scant types of purlins creates the roof and! And Z-purlins wider building and supersedes above two varieties of purlins online Wholesalers for your sourcing needs China! Are properly supported by rafters or its walls by rolling or pressing thin sheets of steel in Labdhi Estate. The rigid framing of the system '' is scant get down to the basics of roof purlins made... Available and thickness up to 3.2 mm is available and thickness up to mm! Metal buildings, but the thickness may vary name, email, and side rails the most important project undergo... Through lightweight timber frame construction showing the position of Under purlins in automatic machines a. By rafters or walls quality products as well as in walls and the roof coverings meanwhile there... Out of flat sheet into the specific purlin shape these are steel sheets purlins provide additional support of structures! Concrete and often an insulation material complete line of engineered purlin metal MART offers a line! Purlins were typically propped off internal walls in the Coffin house in Newbury,,... ’ s rafters or walls the building ’ s purlins support the mid-span of and...
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