EnvTechISysSelection&Finishes ARCH 3311
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This 2 page Class Notes was uploaded by Camron Brakus on Tuesday October 20, 2015. The Class Notes belongs to ARCH 3311 at Southern Polytechnic State University taught by Staff in Fall. Since its upload, it has received 26 views. For similar materials see /class/225453/arch-3311-southern-polytechnic-state-university in Architecture at Southern Polytechnic State University.
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Date Created: 10/20/15
ARCHITECTURE Southern Polytechnic State U ARCH 3311 systems Selection amp Contract r Prof Sargent Lecture Outline Wood Structural Systems Material Properties Product of nature renewable resource 0 Growth pattern and cell structure 0 Classification of wood hardwood softwood 0 Moisture content MC Definition of moisture content MC wt of water express as of wt of dry wood Means of drying wood Air drying kiln drying Reasonsfordrying lumber Strength shrinkage decay Strength variables Species force direction relative to grain direction moisture content Strength comparison with steel and concrete Fire concerns 0 Limited use by occupancy classification amp building ht area 0 Wood structures not permitted in fire district 0 Fire resistance of heavy timber Conditions requiring pressure treated lumber Any use that brings wood in contact with moisture Concepts Standardized dimensions nominal vs actual size Grading o structural criteria machine graded 0 visual criteria visually grade for appearance Modular spacing Engineered wood Define difference between engineered wood vs sawn wood Compositions Veneer plywood Particle composition particle board Wafer composition OSB orientated strand board Fiber composition MDF medium density fiberboard Engineered wood products Advantages of engineered products 0 Examples of engineered wood products Assemblies Fabrication Conventional framing accomplished on site simple tools amp easy to lift into place Trusses are prefabricated requires special fabrication equip amp crane to lift into place Brief comparison of the three main systems with advantages disadvantages 0 Conventional framing o Trusses 0 Beam and deck Overview of conventional platform framing and terminology 0 Foundation system and foundation wall Layout materials dimensions 0 Floor framing Span direction member size spacing Bridging types and function Familiarization with span tables 0 Wall framing Tiltup construction with precut studs Framing openings and wall intersections Lateral bracing 0 Roof framing Roof forms protection drainage Rafter seat and overhange Managing horizontal thrust and bracing o Familiarization with span tables Prefabricated rooftruss construction Design variables 0 Installation spacing bracing 0 Advantages disadvantages Beam and deck roof construction 0 Typical member sizes spacing deck span 0 Wiring and insulating challenges Connections Nailing conventional framing Bolting heavy timber trusses often expressed Gang nail plates light trusses Summation Why select wood
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