This seventh edition of the Architectural Sheet Metal Manual hasmany changes and several additions. Changes include new chaptersand details on penetrations, additional and revised tables insupport of commentary and illustrations, additional commentary andillustrations in support of newer construction techniques, anexpanded appendix covering issues that have received industryemphasis since the last edition and many clarifications.
A pair of "fast lookup keys" has been placed in front of theTable of Contents to assist users with the speedier location ofinformation in this 542page technical document.
Nearly every building constructed is unique. Architectural sheetmetal elements can be used to distinguish an otherwise ordinarybuilding. Metal roofs, column covers, domes and spires addcharacter and can be used by skilled designers to make a dramaticarchitectural statement. Architects and designers can use uniquemetals, variations of metal finishes, contrasting roof seam types,shaped metal cornices, finials, and other elements that areprovided by custom sheet metal to best convey the expressed desiresof the most forwardthinking owners.
Sloped roofs are an especially important architectural elementand, although there are many proprietary roof systems currently onthe market, the unique attributes of customfabricated metaldeserves the innovative designer's first and last consideration. Bytheir nature, proprietary roof systems are designed for a massmarket and a certain degree of architectural uniqueness is lostwith the use of packaged systems. Packaged systems typically relyheavily on sealants as weatherproofing and standard packageflashing. A custom sheet metal contractor who installs a packagedroof system can provide custom detailing and jobspecific flashingthat will greatly enhance the roof's overall weathertightness.Custom sheet metal has the inherent advantages of buildingspecificdesign, soldered joints, and other beneficial characteristics thatcan only be realized through the use of custom sheet metal.
In order to provide designers a broader choice in applicationand design and to reflect local practices as well as varyinggeographic conditions, this manual often includes alternativemethods of design and construction. Not all local area practicesare discussed or illustrated as this would be impractical.Deviations from included recommendations may often be permissible,depending upon verification of satisfactory service underconditions other than those covered in this manual. Carefulexamination of the information herein and local climate conditionswill enable designers to select the proper detail for practicallyany architectural sheet metal requirement.
Designers and owners are strongly encouraged to consult localSMACNA architectural sheet metal contractors about any applicationof architectural sheet metal. Local architectural sheet metalcontractors can offer technical guidance and make suggestions onthe choice of metals, the relative economies of differenttechniques, the practicality of design details, and can otherwiseshare their experience. You can find a local SMACNA contractorusing the online member list at http://www.smacna.org forspecific technical and design assistance. Architects can useelements from this manual as a guide in developing an architecturalsheet metal section of their project specifications.
Direct reference to this manual by figure or detail number isencouraged.
SMACNA expresses appreciation to the committees and task forces,architects, sheet metal contractors, journeymen sheet metalworkers,manufacturers, and other interested individuals and companies thathave contributed time, knowledge and experience in the developmentof this and former editions. SMACNA's technical staff also gainsinsight into the need for additions and changes based on theincoming technical inquiriesâ€”a service offered to the public viathe SMACNA Website Technical Inquiry formâ€”but also an ongoingfeedback path for ideas and subject areas of industry interest.Many drawings, much commentary and suggestions have been consignedto further study and, as the association is able to make additionalclarification for various applications, it will do so.
SMACNA ARCHITECTURAL MANU
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