ISO INTERNATIONAL STANDARD 11112 First edition 1995-12-15 Earth-moving machinery Operator's seat Dimensionsandreguirements Engins de terrassement -Siege de I'operateur--Dimensions et exigences ISo Reference number ISO111121995(E) ISO11112:1995(E) Foreword Iso (the International Organization for S Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work Iso collaborates closelywith the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11112 was prepared by Technical Committee ISO/TC 127,Earth-moving machinery.Subcommittee SC 2,Safety re- quiremenits andhuman factors. ISO 1995 All rights reserved Unless otherwise specified, no part of this publication may be reproduced microfilm, without permission in writing from the publisher International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland = INTERNATIONALSTANDARDISO ISO11112:1995(E) Earth-moving machinery - Operator's seat - Dimensions and requirements 1 Scope taking into consideration operator sizes, according to iso 3411, from the 5th percentile through the 95th This International Standard specifies the dimensions percentile. requirements and adjustmentranges foroperator seats on earth-moving machinery as defined in Iso 6165. Additionally, it provides dimensions for 3.2 The dimensions for the operator's seat and re- armrests when fitted on these machines lated adjustments are given in table1 and figure 1 These include essential dimensions and optional re- 2 Normative references quirements. The following standards contain provisions which Seat dimensions and adjustments, if provided, are through reference in this text, constitute provisions referenced to the seat index point (SiP) determined in ofthisInternationalStandard.Atthetimeofpubli- accordance with IsO 5353 Dimensions and adjust- cation,theeditionsindicatedwerevalid All standards ments other than those specified in this international are subject to revision, and parties to agreements Standard may be used only if they provide better ac- based on this International Standard are encouraged commodation for the operator. to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and ISO maintain registers of cur- 3.3 On those machines where a higher SIP is de- rentiy valid International Standards. sirable, a reduced seat-back to seat cushion angle should be considered. See IsO 5353 Iso 3411.-1),Earth-moving machinery Human physical dimensions of operators and minimum oper- ator space envelope 3.4 To ensure unimpeded ingress and egress of the Iso 5353.1995, Earth-moving machinery,and tractors operator at the seat, one or both of the armrests shall, and machinery for agriculture and forestry - Seat where necessary,be movable In such circumstances index point. the armrest shall provide a firm support during oper- ation of the machine. Iso6165:1987,Earth-moving machinery Basic types-Vocabulary. 3.5 Operator seats may be provided with a swivel 3 Seat requirements or tilt. It may pivot to improve both the operator work position and the means of ingress and egress A 3.1 Nominal values of dimensions regarding seat means of securing the work positions of the seat features, their mutual locations and adjustments are (swivel or tilt) shall be