1 Purpose and scope of application
The purpose of this standard is to determine the classification of tower cranes defined in the standard.
ISO 4306-3 and complies with their group.
NOTE - For classification of cranes, the definitions given in ISO 4306-1 are based on the number of cycles.
The work predicted by the crane lifetime and the load spectrum factor provide the nominal reload status.
The classification of this standard applies to the following:
- Tower cranes for construction and general works of prefabricated buildings
- Tower cranes are always raised
- Gate cranes
- Load tower cranes and shipbuilding
This standard does not apply to the following:
- Mobile arm cranes with driving forces that can be installed to the tower accessories.
- Raised masts with or without arm
2 mandatory references
The following required documents contain the provisions referred to in the text of this National Standard of Iran.
Has been. Thus, those regulations are part of this national standard of Iran
Referred to a document stating the date of publication, amendments and subsequent revisions thereof
This is not the opinion of this national standard of Iran. Regarding the documents referred to them without mentioning the date of publication
The latest revisions and their subsequent amendments have always been considered.
Use of the following mandatory reference is required to apply this standard:
2-1 ISO 4301-1: 1986, Cranes and lifting appliance - Classification - Part 1:
2-2 ISO 4306-1: 1990, Cranes - Vocabulary - Part 1: General.
2-3 ISO 4306-3: 1991, Cranes - Vocabulary - Part 3: Tower cranes.
3 Terms and definitions
In this standard, the terms and / or words with the definitions expressed in ISO 4306-1 and
ISO 4306-3 is used.
4 groups of tower cranes
Tower cranes are divided into three general groups based on the service expected of them as follows:
Group 1- Tower cranes for irregular (non-continuous) use or having a light condition
Group 2- Tower cranes for construction.
Group 3 - Tower cranes for regular (continuous) use or with a heavy loading condition.
5 Classification of tower cranes as an integrated set
A tower crane, as an integrated assembly, shall be classified in accordance with Schedule 1.
Examples of tower crane classifications as an integrated set are presented in Table 2.