ASME A17.1-2010 pdf download

ASME A17.1-2010 pdf download.Safety Code for Elevators and Escalators.
The original intent for requirements in ASME A17.1 and CSA B44 Codes may be obscure in Committee’s records. Therefore, this Handbook will convey, through text, examples of calculations, tables, and illustrations, the end result of Code requirements as applied to equip- ment installed today where the original intent cannot be found. It should not be construed that examples and illustrations in this Handbook are the only means of complying with ASME A17.1/CSA B44 Code require- ments, or that all illustrations necessarily represent all requirements contained in the Code. Some illustrations simplyreflectgeneralindustryorspecific companyprac- tices. Withinformationofthis type, itis hoped the reader will develop a better understanding of, and appreciation for, requirements in ASME A17.1/CSA B44. Commentary contained in this Handbook is the opin- ion of the author. It does not necessarily reflect the offi- cial position of ASME, the ASME A17 Standards Committee for Elevators and Escalators, CSA, or the CSA B44 Technical Committee. When an official inter- pretation of an ASME A17.1/CSA B44 requirement is required, the user should write to the Secretary of the ASME A17 Standards Committee in accordance with instructions in the Preface to the ASME A17.1/CSA B44 Code. Comments and suggestions for this and future editions ofthe ASME A17.1/CSA B44 Handbook should be addressed to: Secretary A17 Standards Committee The American Society of Mechanical Engineers Three Park Avenue New York, New York 10016-5990, or E-mail: [email protected]. ASME Elevator and Escalator Courses. ASME Professional Development is a leader in top quality ele- vator and escalator education. Courses range from an introduction to elevators and escalators, inspection tech- niques, equipment modernization code requirements, maintenance evaluation, to an in depth review of ASME A17.1/CSA B44 using this Handbook as the course text.
ASME A17.1/CSA B44 CODE REVISIONS A summary of code changes from ASME A17.1-2004 through ASME A17.1/CSA B44-2007 and CSA B44-04 through ASME A17.1/CSA B44-04 along with approved balloted rationale are in the front of this Handbook. Revisions are made periodically to the Code to incorpo- rate necessary or desirable changes determined from experience gained from the application of the proce- dures, and address developments in the elevator art. Approved revisions are published periodically. See Diagram 1 in the Foreword for the flowchart of the ASME A17 revision process. The Committee welcomes proposals from Code users. Such proposals should be as specific as possible: citing Section number(s), proposed wording, pertinent documentation, and a detailed description of the reasons for the proposal. Proposed revisions should be sent to: Secretary A17 Standards Committee The American Society of Mechanical Engineers Three Park Avenue New York, NY 10016 E-mail: [email protected] Revisions to the ASME A17.1/CSA B44 Code occurs after an intense formal process assuring due process for all affected parties. The ASME A17 process is illustrated in Diagram 1, illustrations (a) and (b). The CSA process is the same as illustrated in Diagram 1. ERRATA Errata to the current ASME A17.1/CSA B44 is pub- lished on the ASME A17 Committee Web site. Errata to prior editions of the Code are not readily available. The errata to ASME A17.1-2007/CSA B44-07 can be found in this Handbook immediately following summary of code changes.
RATIONALE: Requirement 2.20.8.1 has been added to require that loss of traction be detected. . However, trac- tion loss must not be confused with creep, which is a natural phenomenon. Traction loss occurs when the required traction exceeds the available traction. Creep occurs due to the existence of unequal tensile loads in the suspension means at the points of entry and exit from the driving sheave, their tensile elasticity, and the friction work. Creep always exists in a traction system. Since its basis is load-related, it can occur with a station- ary or rotating sheave. To allow for other means of sus- pension, such as noncircular elastomeric coated steel suspension members and aramid fiber ropes. [TN 07-1970] [08a] Section 1.3 Revised definition of “door, folding” RATIONALE: Clarification that a folding door is a type of horizontally sliding door. [TN 06-792] [10] Section 1.3 Revise Definition “elevator, marine” Added