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This is the third edition of B651, Accessible design for the built environment. It supersedes the previous editions published in 1995 and 1990 under the title Barrier-Free Design. This Standard contains requirements for making buildings and other facil

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This PDF includes Amd #1-#6. 1. Scope 1.1 Before an attempt can be made to measure or gauge the requirements specified on engineering drawings or specifications, to ascertain whether an actual size or value meets the specified limits, it is essenti

定价： 319元 / 折扣价： 272 元

1. SCOPE 1.1 This Standard gives definitions of terms, tables of preferred basic sizes and Standard tolerances, a series of standard fits to cover most engineering requirements, and information for the design of special fits for use where standard fits a

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Preface This is the first edition of CSA C2.2, Pole-mounted, single-phase distribution transformers for electric utilities. 1 Scope 1.1 This Standard specifies the requirements for distribution transformers intended primarily for operation by el

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C22.1-06 Preface This twentieth edition of the Canadian Electrical Code, Part I, was approved by the Committee on the Canadian Electrical Code, Part I, and by the Regulatory Authority Committee at their June 2005 meetings in Kelowna, British Columbi

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1. Scope 1.1 This Standard is intended to provide basic requirements for the evaluation of double-insulated cord-connected electrical equipment. 1.2 This Standard applies to equipment for use on circuits not exceeding 250 V-to-ground and designed

定价： 455元 / 折扣价： 387 元

1. Scope 1.1 This Standard applies to permanent adhesive labels and nameplates intended for use indoors or outdoors on application surfaces that are essentially clean, smooth, flat, or simple curved. 1.2 This Standard includes requirements for

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This PDF includes GI #2, #3 and #4. 1. Scope 1.1 This Standard applies to cord-connected, electrically heated bedding such as blankets, comforters, quilts, sheets, mattresses, and mattress pads with associated control units, for household use, desi

定价： 546元 / 折扣价： 465 元