ISO 4304:1987

SLOVENSKI STANDARD
01-november-1997
Dvigala, razen mobilnih in plovnih dvigal - Splošne zahteve stabilnosti
Cranes other than mobile and floating cranes -- General requirements for stability
Appareils de levage autres que grues mobiles et grues flottantes -- Exigences générales
relatives à la stabilité
Ta slovenski standard je istoveten z: ISO 4304:1987
ICS:
53.020.20 Dvigala Cranes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ISO
INTERNATIONAL STANDARD
First edition
1987-06-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXAYHAPOfiHAfl OPTAHM3A~Wl l-l0 CTAHJJAPTM3A~MM
Cranes other than mobile and floating cranes -
General requirements for stability
Apparet’ls de levage autres que grues mobles et grues flottantes - Exigences g&n&ales
relatives 6 Ia stabil&?
Reference number
ISO 4304: 1987 (E)
Foreword
ISO (the International Organization for 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. Esch 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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council. They are approved in accordance with ISO procedures requiring at
least 75 % approval by the member bodies voting.
International Standard ISO 4304 was prepared by Technical Committee ISO/TC 96,
Cranes, fifting appfiances and related equipment.
Users should note that all International Standards undergo revision from time to time
and that any reference made herein to any other International Standard implies its
latest edition, unless otherwise stated.
0 International Organkation for Standardkation, 1987
Printed in Switzerland
INTERNATIONAL STANDARD
ISO 4304 : 1987 (E)
Cranes other than mobile and floating cranes -
General requirements for stability
3.1.5 For cranes that are to be permanently installed, earth-
1 Scope and field of application
quake effects appropriate to the particular site or zone shall be
considered as an additional loading under cases 1, ll and Ill of
This International Standard specifies the conditions to be met
when verifying, by calculation, the stability of all crane types the table.
defined in ISO 4306-1 that are subject to tipping (except mobile
cranes and floating cranes); it assumes that they are standing
3.1.6 In the calculations shown in the table, consideration
on a firm, level supporting surface or track.
shall be given to the loads induced by the weight of the crane
and its components, including any lifting attachments which
The sliding of cranes on their tracks is not covered by this Inter-
are a permanent part of the crane in its working condition.
national Standard.
3.2 Backwards stabil@ in Service conditions
2 References
When a crane is in an unladen state and with all operationally
movable components retracted to positions closest to the back-
ISO 4302, Cranes - Wind load assessmen t.
ward tipping edge, backwards stability in Service conditions
shall be verified as indicated in either 3.2.1 or 3.2.2 (see also the
ISO 43064, Lifting appkances - Vocabulary - Part 1: General.
table, case IV).
3 Stability 3.2.1 Moment method
The tipping moment caused by in-Service wind W, and inertia
3.1 Calculations
forces D shall not be greater than
...