TAILIEUCHUNG - APA Engineered Wodd Handbooks Episode 3

Tham khảo tài liệu 'apa engineered wodd handbooks episode 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER THREE__ WOOD STRUCTURAL PANELS IN STRUCTURAL COMPONENTS H. Fulton Desler Senior Engineer TSD INTRODUCTION The structural components included in this chapter are box beams stressed-skin panels and structural insulated panels SIPs . These are composed of a combination of wood structural panels and lumber or structural composite lumber although flanges stiffeners and splices may also be composed of wood structural panels with little or no sawn lumber products required. Components made of wood structural panels and lumber are often major structural members which depend on the glued or mechanically fastened joints to combine the separate pieces into an efficient structural unit capable of carrying the design loads. Materials in these components may be stressed to an appreciably higher level than in nonengineered construction. Since improperly designed or fabricated components could constitute a hazard to life safety and property damage it is strongly recommended that they be designed by qualified design professionals using recognized design and fabrication methods and that adequate quality control be maintained during manufacture. To ensure that such quality control has been carefully maintained it is recommended that the services of an independent third-party testing agency be employed. A requirement that each unit bear the trademark of an approved agency will ensure adequate independent inspection. Working design capacities for wood structural panels are given in Chapter 2. References are also made to the American Forest and Paper Association publication National Design Specification for Wood Construction NDS 1 for other wood products. Presentation of these specific design methods is not intended to preclude further innovation. Therefore where adequate test data are available the design provisions Caution on the use of equations Metric equivalents are frequently given in this chapter. Many of the equations contain constants or variables that are .

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