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crca specification manualThese manuals can be ordered below. It can be used on its own or as part of the Standard Form of Warranty. It has been extensively revised to reflect the roofing industry today, with now twice the content of the previous edition. The current edition of the manual includes: Also useful to architects, engineers, specifiers, and building owners. It provides the theoretical and technical information required to perform the tasks set out in the national training standards for both apprentices and journey persons. It supplements existing roofing training material and current methods. It is an ideal reference for use on the job site and to supplement other information that roofers require to do their jobs safely, effectively and efficiently. The publication, CRCA Specification Manual, includes information on newly introduced roofing assemblies, including vegetated roofs and photovoltaic (PV) installations. Included in the comprehensive manual for architects, specifiers, and contractors are 175 drawings and 30 specifications for roofing assemblies. Register here Your account gives you unlimited free access to our E-book Collection, Newsletter Archives and our Digital Editions of Construction Canada. Low slope roofing includes water impermeable, or weatherproof, types of roof membranes installed on slopes less than or equal to 2:12. Steep slope roofing includes watershedding types of roof coverings installed on slopes exceeding 4:12. Saint John, New Brunswick E2M 5T5 MRGNB over sees these observers for qualification purposes and hold various seminars throughout the year for roof Observers. This confirms to the owner that the roof installation is consistent with the design intent and with the good roofing practices reflected by these industry standards. They must be familiar with the roofing system(s) being installed with the requirements of the project documents, with industry and manufacturer standards, and with MRGNB and CRCA requirements.http://topoforms.com/upload/file/echo-srm-2301-manual.xml
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In this orientation the applicant will become aware of: These workshops include modules that assist Observers to attain and retain the skills appropriate for rooftop Quality Assurance Observation consistent with industry, MRGNB and CRCA requirements. As well, the workshops address issues that are being seen in the industry. These issues could be coming from property owner’s perceptive, contractors, or information from the CRCA National Technical Committee which may be surfacing in other parts of Canada and that the Observers should be made aware of. RRO’s are welcomed and do attend as well. In this workshop the following is reviewed. The class source or classifying authority, however, is frequently unidentified or omitted. Agencies governing the classification roof assemblies and components include the following:Roof assemblies are evaluated for their performance when exposed to fire from an internal source (i.e. directed onto the underside of the roof deck) and roof-covering materials (membranes) are evaluated according to their performance when exposed to fire from an external source. Usually the roofing specification is concerned with the different classification of roof-covering materials, as follows:Under such exposures, roof coverings of this class are not readily flammable and do not carry or communicate fire; they afford a fairly high degree of fire protection to the roof deck; they do not slip from position; they possess no flying brand hazard; and they do not require frequent repairs in order to maintain their fire resisting properties. Under such exposures, roof coverings of this class are not readily flammable and do not readily carry or communicate fire; they afford a moderate degree of fire protection to the roof deck; they do not slip from position; they possess no flying brand hazard; and they may require infrequent repairs in order to maintain their fire-resisting properties.https://closeriesaintjacques.com/files/echo-srm-2400sb-manual.xml Under such exposures, roof coverings of this class are not readily flammable and do not readily slip from position; they possess no flying brand hazard; and they may require occasional repairs or renewals in order to maintain their fire-resisting properties. UL evaluates and describes the performance of roof assemblies and components when exposed to internal and external sources of fire, similar to ULC. Roof covering materials are also classified into Class A, Class B, or Class C. In addition, UL classifies materials according to their resistance to wind uplift. Materials in this category are rated as Class 30, Class 60, or Class 90 materials.The FM Approved assembly must contain listed components only. The current CRCA Roofing Specification manual no longer refers to Roof Classes. This classification system should be considered obsolete. Saint John, New Brunswick E2M 5T5 They were inspired by industry and client concerns about the longevity of some built-up roof membrane system installations and the desire for improved roofing specifications. This edition described the technical requirements for built-up roof (BUR) systems to qualify for the 5 Year Guarantee Program. Although based on the existing CRCA Technical Manual, the technical requirements for a system to qualify for an MRGNB 5 Year Guarantee were often more demanding. This supported the overall goal of more durable and longer-lasting roof systems. Selected SEBS Kettle Modified Bituminous roof systems were added in March 1993. It included all of the systems covered in the original manual and subsequent additions to the Guarantee Program. A fully adhered EPDM single-ply membrane system was added to the Guarantee Program in January 2005 and supporting additions to the technical manual were issued. The current MRGNB Roofing Specifications Manual, issued in 2010, was again updated in 2013 with the launch of the MRGNB Proprietary Extended Guarantee Program. The Guarantee certificate is an undertaking by MRGNB, its shareholders, and the respective roofer. In addition, our Proprietary Extended Guarantee Program adds a written undertaking issued by the membrane system manufacturer providing even further protection for the building owner and roof design authority. The Observer documents that the roofing application is consistent with the project specifications, the MRGNB Roofing Specifications Manual, and with the membrane system manufacturers’ written requirements (See “ A Few Words about QAO ” below). This is particularly true in the installation of a roof system intended to provide long-term protection for a new or existing building. The proper viscosity grade oil for your engine depends on climactic or seasonal conditions where you drive. You can use oil with a viscosity grade of SAE 5W40 across all temperature ranges for normal driving conditions.Paste as plain text instead Display as a link instead Clear editor Upload or insert images from URL. You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. ( December 2010 ) ( Learn how and when to remove this template message ) Stock bars and sheets of cold-rolled steel ( CRS ) are commonly used in all areas of manufacturing. The terms are opposed to hot-formed steel and hot-rolled steel. Such uses have become more and more popular in the US since their standardization in 1946. In the 1920s and 1930s, acceptance of cold-formed steel as a construction material was still limited because there was no adequate design standard and limited information on material use in building codes. The walls were load bearing masonry, but the floor system was framed with double back-to-back cold-formed steel lipped channels. Greene engineered a recent renovation to the structure and said that for the most part, the joists are still performing well.Cold-formed steel allowed for shapes which differed greatly from the classical hot-rolled shapes. The material was easily workable; it could be deformed into many possible shapes. Even a small change in the geometry created significant changes in the strength characteristics of the section. It was necessary to establish some minimum requirements and laws to control the buckling and strength characteristics. Also it was observed that the thin walls underwent local buckling under small loads in some sections and that these elements were then capable of carrying higher loads even after local buckling of the members. This North American Specification has been accredited by the American National Standard Institute ( ANSI ) as an ANSI Standard to supersede the 1996 AISI Specification and the 1994 CSA Standard.Member states of the European Union use section 1-3 of the Eurocode 3 (EN 1993) for the design of cold formed steel members. Other nations utilize various design specifications, many based on AISI S-100, as adopted by the building codes listed below. Another list of international cold-formed steel codes and standards is maintained (and can be edited with permission) at Cold-Formed Steel Codes Around the World.Building Codes. EBCS-1 Basis of design and actions on structures. EBCS-3 Design of steel structuresSpecification: SANS 10162 - The Structural Use of Steel: Part 2 - Limit-state design of cold-formed steelwork. Building code: National Building Regulations of South AfricaSpecification: North American Specification for the Design of Cold-Formed Steel Structural Members, document number AISI S100-2007 published by the American Iron and Steel Institute in October 2007.Building Code: The National Building Code of Canada is the model code adopted with amendments by individual Provinces and Territories.Specification: NBR 14762:2001 Dimensionamento de estruturas de aco constituidas por perfis formados a frio - Procedimento (Cold-formed steel design - Procedure, last update 2001) and NBR 6355:2003 Perfis estruturais de aco formados a frio - Padronizacao (Cold-formed steel structural profiles, last update 2003). Building Code: ABNT - Associacao Brasileira de Normas Tecnicas (www.abnt.org.br)NCH 427 - suspended because it was written in the 1970s. Cold-formed steel sections were based in part on AISI (U.S). The local Institute for Building code INN has specified in recent Codes for seismic design that designers must use the last edition of the AISI Specification for cold formed steel and the AISC for hot rolled, in their original versions in English until some traduced adaption will be issued here.CIRSOC 303 for Light Steel Structures where cold formed steel is included. That Specification, now more than 20 years old, is being replaced by a new one, which will be, in general, an adaption of the current AISI one. The former CIRSOC 303 was an adaption of the Canadian code of that time. At this time CIRSOC 303 was very old, now CIRSOC 301 is in revolution to be aligned with the American codes (LRFD design). In the near future both codes will be aligned also in designations and terminology.National Structural Code of the Philippines 2010, Volume 1 Buildings, Towers, and other Vertical Structures, Chapter 5 Part 3 Design of Cold-Formed Steel Structural Members is based on AISI S100-2007Specification:IS:801, Indian standard code of practice for use of cold-formed light gauge steel structural members in general building construction, Bureau of Indian Standards, New Delhi (1975). (currently under revision). Building Code: see - model code National Building Code of India Specification: Technical Code of Cold-formed Thin-wall Steel Structures. Building Code: GB 50018-2002 (current version)Specification: Design Manual of Light-gauge Steel Structures. Building Code: Technical standard notification No.1641 concerning light-gauge steel structuresMalaysia uses British Standard BS5950, especially BS5950:Part 5; AS4600 (from Australia) is also referenced.Specification: EN 1993-1-3 (same as Eurocode 3 part 1-3), Design of steel structures - Cold formed thin gauge members and sheeting. Each European country will get its own National Annex Documents (NAD).Specification: German Committee for Steel Structures (DASt), DASt-Guidelines 016: 1992: Calculation and design of structures with thin-walled cold-formed members; In GermanSpecification. UNI CNR 10022 (National Document). EN 1993-1-3 (Not compulsory)Eurocode for cold-formed steel in the UK. BS EN 1993-1-3:2006: Eurocode 3. Design of steel structures. General rules.The hot rolled steel shapes are formed at elevated temperatures while the cold-formed steel shapes are formed at room temperature. Cold-formed steel structural members are shapes commonly manufactured from steel plate, sheet metal or strip material. The manufacturing process involves forming the material by either press-braking or cold roll forming to achieve the desired shape.When a steel section is cold-formed from flat sheet or strip the yield strength, and to a lesser extent the ultimate strength, are increased as a result of this cold working, particularly in the bends of the section.Gage LengthThis increase is in the zones where the material is deformed by bending or working. The yield stress can be assumed to have been increased by 15 or more for design purposes. The yield stress value of cold-formed steel is usually between 33ksi and 80ksi. The measured values of Modulus of Elasticity based on the standard methods usually range from 29,000 to 30,000 ksi (200 to 207 GPa). A value of 29,500 ksi (203 GPa) is recommended by AISI in its specification for design purposes. The ultimate tensile strength of steel sheets in the sections has little direct relationship to the design of those members. The load-carrying capacities of cold-formed steel flexural and compression members are usually limited by yield point or buckling stresses that are less than the yield point of steel, particularly for those compression elements having relatively large flat-width ratios and for compression members having relatively large slenderness ratios. The exceptions are bolted and welded connections, the strength of which depends not only on the yield point but also on the ultimate tensile strength of the material. Studies indicate that the effects of cold work on formed steel members depend largely upon the spread between the tensile and the yield strength of the virgin material.It was found that the ductility measurement in a standard tension test includes local ductility and uniform ductility. Local ductility is designated as the localized elongation at the eventual fracture zone. Uniform ductility is the ability of a tension coupon to undergo sizeable plastic deformations along its entire length prior to necking. This study also revealed that for the different ductility steels investigated, the elongation in 2-in. (50.8-mm) gage length did not correlate satisfactorily with either the local or the uniform ductility of the material. In order to be able to redistribute the stresses in the plastic range to avoid premature brittle fracture and to achieve full net-section strength in a tension member with stress concentrations, it is suggested that:The most common shape for CFSF members is a lipped channel, although “Z”, “C”, tubular, “hat” and other shapes and variations have been used. The building elements that are most often framed with cold-formed steel are floors, roofs, and walls, although other building elements and both structural and decorative assemblies may be steel framed.Examples of cold-formed steel that would not be considered framing includes metal roofing, roof and floor deck, composite deck, metal siding, and purlins and girts on metal buildings.Wall members are typically vertical lipped channel “stud” members, which fit into unlipped channel “track” sections at the top and bottom. Similar configurations are used for both floor joist and rafter assemblies, but in a horizontal application for floors, and a horizontal or sloped application for roof framing. Additional elements of the framing system include fasteners and connectors, braces and bracing, clips and connectors.In many mid-rise and low-rise applications, the entire structural system can be framed with CFSF.Since an assembly is only as strong as its weakest component, it is important to engineer each connection so that it meets specified performance requirements. There are two main connection types, Fixed and Movement-Allowing (Slip). Fixed connections of framing members do not allow movement of the connected parts. They can be found in axial-load bearing walls, curtain walls, trusses, roofs, and floors. Movement-Allowing connections are designed to allow deflection of the primary structure in the vertical direction due to live load, or in the horizontal direction due to wind or seismic loads, or both vertical and horizontal directions. One application for a vertical movement-allowing connection is to isolate non-axial load bearing walls (drywall) from the vertical live load of the structure and to prevent damage to finishes. A common clip for this application is an L-shaped top-of-wall clip for walls that are infill between floors. These clips have slots perpendicular to the bend in the clip. Another common clip is the bypass clip for walls that bypass outside the edge of the floor structure. When these clips are L-shaped, they have slots that are parallel to the bend in the clip. If the structure is in an active seismic zone, vertical and horizontal movement-allowing connections may be used to accommodate both the vertical deflection and horizontal drift of the structure.These fastening methods are recognized in the American Iron and Steel Institute (AISI) 2007 North American Specification for the Design of Cold-Formed Steel Structural Members, Chapter E. Other fastening methods, such as clinching, power actuated fasteners (PAF), mechanical anchors, adhesive anchors and structural glue, are used based on manufacturer's performance-based tests.This includes building frames, automobile, aircraft, home appliances, etc. Use limited in cases where high ductility requirements.High value of unit weight limits the flexibility of manufacturing wide variety of shapes.The light weight enhances its variety of usage.Ease of construction (e.g. connection).It is a heat treatment technique that alters the microstructure of the cold-reducing steel to recover its ductility.DSM may be used in lieu of the Main Specification for determining nominal member capacities. Specific advantages include the absence of effective width and iterations, while only using known gross-sectional properties. An increase in prediction confidence stems from forced compatibility between section flanges and web throughout elastic buckling analysis. This increase in prediction accuracy for any section geometry provides a solid basis for rational analysis extension and encourages cross-sectional optimization. Either DSM or the main specification can be used with confidence as the.Currently, DSM only provides solutions for beams and columns and has to be used in conjunction with the main specification for a complete design.These non-pre-qualified sections use the factors of safety of.In general these would include: (1) determining the elastic buckling values and (2) using the DSM equations in Appendix 1 to determine nominal flexural and axial capacities, Mn and Pn. The premise of DSM itself is an example of rational analysis. It uses elastic buckling results to determine the ultimate strength through the use of empirical strength curves. This provides designers with a method for performing a rational analysis in a number of unique situations.But it could also be used to allow an engineer to include the effects of moment gradients, the influence of different end conditions, or the influence of torsion warping on all buckling modes.Research on several of these topics has been completed or is in the process of being completed and should be included in the next update of the AISI Specification. DSM is also limited in determining strength for sections in which very slender elements are used. This is due to the strength of a cross section being predicted as a whole with DSM instead of using the effective width method of the specification which breaks the cross section up into several effective elements. One slender element will cause low strength with DSM, which is not the case with the current specification method. The finite strip method using CUFSM is the most commonly used approach to determine the elastic buckling loads. The program also limits DSM because holes cannot be considered, loads have to be uniform along the member, only simply supported boundary conditions are considered, and the buckling modes interact and cannot be easily distinguishable in some cases.CS1 maint: archived copy as title ( link ) Washington, D.C. By using this site, you agree to the Terms of Use and Privacy Policy. VIP members get additional benefits. VIP members get additional benefits. You will receive a link and will create a new password via email. Become VIP Member Become VIP Member The specification of rolling shutter shall be as per the requirement of the client. Here I am trying to put general information about rolling shutter and its materials, fixing methods and other details. Hand operated shutters are of push and pull type. Gear operated shutters are provided with reduction gear operated by mechanical device with chain, crank, shaft and handle. The shutter consist of 80 mm wide MS laths 1.25 mm thick or gauge as specified of mild steel sheet machine rolled. Laths are inter-locked together throughout its entire length and jointed together at the end with end locks. These are mounted on specially designed pipe shaft. These shall be free from surface defects and the edges shall be cleanly sheared.These should be free of blow holes, surface defects such as cracks, burrs etc. The spring steel wire used or helical spring should conform to Grade 2 of IS:4454. Flat spring steel strip used for spiral spring shall be from 0.8 to 1.0 percent carbon steel strip especially hardened and tempered. The top cover of shaft, spring etc.The reduction gear arrangement operated by the mechanical device should be of the best quality and easy in operation. The lath portion (shutters) is laid on ground and the side guide channels are bound with it. The shutter is then placed in position. The side guide channels are fixed to the wall through the plates welded to the guides. These plates and brackets should be fixed by means of steel screws, bolts and rawl plugs drilled into the wall. Fixing should be done accurately so that the operation of the shutter is easy and smooth. The smooth and easy working of shutters are ensured. To prevent rusting of shutters, it is cleaned off dust, scales, rust etc.He is the founder of The Constructor. Download Modified Bituminous Membrane Roofing.Store membrane rolls with selvage edge up, store as per manufacturer’s requirements to meet warranty..3 Remove only in quantities required for same day use. Size 9 kg on roof per torch applicator, within 10 m of torch applicator..2 Contractor to provide safety person on site at all times during the roofing process and shall remain on site two (2) hours after work has ceased or after torching has stopped. Provide written declaration to the Contract Administrator stating that materials and components, as assembled in system, meet this requirement. QUALITY ASSURANCE.1 Membrane: applied by applicator acceptable to Contract Administrator and approved by manufacturer for application of its products..2 Applicators: minimum 5 years proven experience..3 Manufacturer’s representative:.1.2.4 1.10 Inspect roofing system at the start of construction, midway and as required for commissioning. Additional inspections may be carried out at the discretion of the Roofing System Manufacturer. Provide technical assistance where required to correct installation of roofing system. Submit laboratory test reports certifying compliance of bitumens and membranes with specification requirements. MOCK-UP.1 Mock-up to be constructed upon request of the Contract Administrator..2 Mock up to be 10 m2 minimum size showing typical membrane lap joint, one inside and one outside corner parapet flashing. Class C-plain surfaced. Grade heavy duty service. Class A-granule surfaced. Grade heavy duty service. Bottom surface polyethylene. Colour to be light grey unless otherwise indicated. Contrasting colour cap sheet to be installed over cap sheet. Ensure fasteners have the following deck penetration:.1.2.3.2 For concrete decks: minimum 25 mm. For wood decks: minimum 25 mm. For metal decks: minimum 19 mm and maximum 25 mm longer than assembly being secured. Fasteners to engage metal deck top flange. At gymnasium locations, fastener points of all fasteners to be removed. Roofing adhesive: single-component, moisture cured, solvent free polyurethane adhesive, dispensed from a portable disposable pre-pressurized container. Part 3 EXECUTION 3.1 WORKMANSHIP.1 3.2 Do roofing work in accordance with applicable, standard in Canadian Roofing Contractors Association (CRCA) Roofing Specifications Manual, except where specified otherwise. PROTECTION.1 Cover walls and adjacent work where materials hoisted or used..2 Use warning signs and barriers. Curbs have been built. Roof drains have been installed at proper elevations relative to finished roof surface. Plywood and lumber nailer plates have been installed to deck, walls and parapets as indicated. Stagger all vertical joints. Ensure minimum 50 mm overlap at all ends and side laps. Roll membrane, including seams, with counter top roller to ensure full contact. Adhere insulation in adhesive and walk-in insulation boards to insure maximum contact with adhesive. Place boards in parallel rows with ends staggered, and in firm contact with one another. Cut end boards to suit. Install tapered insulation in accordance with shop drawings. Cover Board Components (Expanded Polystyrene (EPS)):.1.2.3.4.5.6.7 OR Apply beads of roofing adhesive to insulation in accordance with manufacturer’s written instructions. Adhere cover board in adhesive and walk-in cover boards to insure maximum contact with adhesive. Place boards in parallel rows with ends staggered and in firm contact with one another. Cut end boards to suit. Apply beads of roofing adhesive to cover board in accordance with manufacturer’s written instructions. Adhere asphalt recover board in adhesive and walk-in asphalt recover boards to insure maximum contact with adhesive. Fit boards tight together. Stagger joints between asphalt recover board and cover board. Adhere asphalt recover board in adhesive and walk-in asphalt recover boards to insure maximum contact with adhesive. Place boards in parallel rows with ends staggered and in firm contact with one another. Cut end boards to suit. Apply beads of roofing adhesive to first layer of asphalt recover board in accordance with manufacturer’s written instructions. Adhere second layer of asphalt recover board in adhesive and walk-in asphalt recover boards to insure maximum contact with adhesive. Fit boards tight together. Stagger joints between layers of asphalt recover board. OR Cover Board Components (Polyisocyanurate (Polyiso)):.1.2.3.4.5.4 Base Sheet Application:.1.2.3.4.5 Apply beads of roofing adhesive to insulation in accordance with manufacturer’s written instructions. Adhere asphalt recover board in adhesive and walk-in asphalt recover boards to insure maximum contact with adhesive. Place boards in parallel rows with ends staggered and in firm contact with one another. Cut end boards to suit. Fit boards tight together. Starting at low point of roof, perpendicular to slope, unroll base sheet, align and reroll from both ends. Unroll and torch base sheet onto recover board taking care not to burn membrane or its reinforcement. Lap sheets 75 mm minimum for side and 150 mm minimum for end laps. Application to be free of blisters, wrinkles and fishmouths. Unroll and torch cap sheet onto base sheet taking care not to burn membrane or its reinforcement. Lap sheets 75 mm minimum for side laps and 150 mm minimum for end laps. Offset joints in cap sheet 300 mm minimum from those in base sheet. Application to be free of blisters, fishmouths and wrinkles. Do membrane application in accordance with manufacturer's recommendations. Torch, base and cap sheet onto substrate in 1 metre wide strips. Lap flashing base sheet to membrane base sheet minimum 150 mm and seal by torch welding. Lap flashing cap sheet to membrane cap sheet 250 mm minimum and torch weld. Provide 75 mm minimum side lap and seal. Properly secure flashings to their support, without sags, blisters, fishmouths or wrinkles. Do work in accordance with manufacturer's recommendations. ROOF PENETRATIONS.1 Install roof drain pans, vent stack covers and other roof penetration Flashings and seal to membrane in accordance with the manufacturer's recommendations and details..2 All new roof drains and relocated roof drains to be installed by certified plumber. Coordinate installation and relocation of roof drains so that work can be inspected by Contract Administrator prior to commencement of remaining roof work. 3.6 CLEANING.