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BS ISO 17440:2014

BS ISO 17440:2014

$215.11

Cranes. General design. Limit states and proof of competence of forged steel hooks

Published By Publication Date Number of Pages
BSI 2014 90
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This International Standard is intended to be used together with the other relevant International Standards in its series. As such, they specify general conditions, requirements and methods to prevent hazards in hooks as part of all types of cranes.

This International Standard covers the following parts of hooks and types of hooks:

  • bodies of any type of point hooks made of steel forgings;

  • machined shanks of hooks with a thread/nut suspension.

NOTE 1 The principles of this International Standard can be applied to other types of shank hooks and also where stress concentration factors relevant to that shank construction are determined and used. Plate hooks, which are those assembled from one or several parallel parts of rolled steel plates are not covered in this International Standard.

This International Standard is applicable to hooks from materials with ultimate strength of not more than 800 N/mm2 and yield stress of not more than 600 N/mm2.

The following is a list of significant hazardous situations and hazardous events that could result in risks to persons during normal use and foreseeable misuse. Clauses 4 to 8 of this document are necessary to reduce or eliminate the risks associated with the following hazards:

  1. exceeding the limits of strength (yield, ultimate, fatigue);

  2. exceeding temperature limits of material;

  3. unintentional disengagement of the load from the hook.

The requirements of this International Standard are stated in the main body of the document and are applicable to hook designs in general. The hook body and shank designs listed in Annexes A, B and G are only examples and should not be referred to as requirements of this International Standard.

This International Standard is applicable to cranes manufactured after the date of its publication, and serves as a reference base for product standards of particular crane types.

NOTE 2 This International Standard deals only with the limit state method in accordance with ISO 8686-1.

PDF Catalog

PDF Pages PDF Title
7 Foreword
9 Section sec_1
Section sec_2
1 Scope
2 Normative references
10 Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
3 Terms, definitions and symbols
11 Table tab_1
13 Section sec_4
Section sec_4.1
Table tab_2
4 General requirements
4.1 Materials
14 Table tab_3
Table tab_4
Section sec_4.2
Section sec_4.3
4.2 Workmanship
4.3 Manufacturing tolerances
15 Section sec_4.4
Section sec_4.5
4.4 Heat treatment
4.5 Proof loading
16 Section sec_4.6
Figure fig_1
4.6 Hook body geometry
17 Section sec_4.7
Figure fig_2
4.7 Hook shank machining
18 Section sec_4.8
4.8 Nut
19 Section sec_4.9
Section sec_5
Section sec_5.1
Section sec_5.2
4.9 Hook suspension
5 Static strength
5.1 General
5.2 Vertical design load
20 Section sec_5.3
Section sec_5.4
Section sec_5.4.1
5.3 Horizontal design force
5.4 Bending moment of the shank
21 Section sec_5.4.2
Figure fig_3
22 Figure fig_4
23 Section sec_5.4.3
Section sec_5.4.4
24 Section sec_5.4.5
Section sec_5.5
Section sec_5.5.1
5.5 Hook body, design stresses
25 Figure fig_5
Section sec_5.5.2
Section sec_5.5.3
26 Section sec_5.6
5.6 Hook shank, design stresses
27 Section sec_5.7
Section sec_5.7.1
Section sec_5.7.2
5.7 Hook, proof of static strength
28 Section sec_6
Section sec_6.1
Section sec_6.2
6 Fatigue strength
6.1 General
6.2 Vertical fatigue design force
29 Section sec_6.3
Section sec_6.4
Section sec_6.4.1
Section sec_6.4.2
6.3 Horizontal fatigue design force
6.4 Fatigue design bending moment of shank
30 Section sec_6.4.3
Section sec_6.5
Section sec_6.5.1
6.5 Proof of fatigue strength, hook body
31 Section sec_6.5.2
32 Section sec_6.5.3
33 Table tab_5
Section sec_6.5.4
Table tab_6
34 Section sec_6.5.5
35 Table tab_7
Section sec_6.5.6
Section sec_6.6
Section sec_6.6.1
Section sec_6.6.2
6.6 Proof of fatigue strength, hook shank
36 Section sec_6.6.3
38 Table tab_8
Section sec_6.6.4
Section sec_6.6.5
39 Table tab_9
Section sec_6.6.6
40 Section sec_6.6.7
41 Figure fig_6
Section sec_6.6.8
42 Section sec_6.6.9
Section sec_6.6.10
43 Table tab_10
Section sec_6.6.11
44 Section sec_6.7
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_7.4
6.7 Fatigue design of hook shanks for serially produced hooks
7 Verification of conformity with the requirements
7.1 General
7.2 Verification of manufacture
7.3 Proof loading
7.4 None destructive testing (NDT)
45 Section sec_7.5
Section sec_8
Section sec_8.1
Section sec_8.2
7.5 Test sampling
8 Information for use
8.1 Maintenance and inspection
8.2 Marking
46 Figure fig_7
Section sec_8.3
8.3 Safe use
47 Annex sec_A
Annex sec_A.1
Table tab_af
Figure fig_A.1
Annex A
(informative)

Sample sets of single point hooks

48 Table tab_A.1
49 Table tab_A.1___1
50 Annex sec_A.2
Table tab_ag
Figure fig_A.2
51 Table tab_A.2
52 Annex sec_A.3
Figure fig_A.3
53 Table tab_A.3
54 Annex sec_B
Table tab_ah
Figure fig_B.1
Table tab_B.1
Annex B
(informative)

Sample set of ramshorn hooks

56 Annex sec_C
Annex sec_C.1
Table tab_C.1
Annex C
(informative)

Annexes A and B static limit design forces for hook bodies

57 Annex sec_C.2
Table tab_C.2
58 Annex sec_D
Annex sec_D.1
Table tab_D.1
Annex D
(informative)

Annexes A and B fatigue limit design forces for hook bodies

59 Annex sec_D.2
Table tab_D.2
60 Annex sec_E
Annex sec_E.1
Table tab_E.1
Annex sec_E.2
Figure fig_E.1
Annex E
(normative)

Hook body calculation and specific spectrum ratio factors

61 Figure fig_E.2
Annex sec_E.3
Table tab_E.2
62 Table tab_E.3
63 Table tab_E.3___1
64 Annex sec_F
Annex sec_F.1
Annex sec_F.2
Annex sec_F.2.1
Annex F
(informative)

Sample fatigue strength calculations of proofed hooks (with proof load applied)

65 Annex sec_F.2.2
Annex sec_F.2.2.1
Annex sec_F.2.2.2
67 Annex sec_F.2.3
Annex sec_F.2.3.1
68 Annex sec_F.2.3.2
Annex sec_F.2.3.3
70 Annex sec_G
Annex sec_G.1
Table tab_ak
Figure fig_G.1
Table tab_G.1
Annex G
(informative)

Sample set of hook shank and thread designs

71 Annex sec_G.2
Table tab_al
Figure fig_G.2
72 Table tab_G.2
73 Annex sec_G.3
Table tab_am
Figure fig_G.3
Table tab_G.3
74 Annex sec_G.4
Figure fig_G.4
75 Table tab_G.4
76 Annex sec_H
Annex sec_H.1
Figure fig_H.1
Annex H
(normative)

Bending of curved beams

77 Annex sec_H.2
78 Figure fig_H.2
Table tab_aq
79 Annex sec_I
Annex sec_I.1
Table tab_ar
Figure fig_I.1
Annex sec_I.2
Annex I
(normative)

Calculation of hook suspension tilting resistance, articulation by a hinge or rope reeving system

80 Figure fig_I.2
Annex sec_I.3
81 Table tab_at
Figure fig_I.3
Table tab_I.1
83 Annex sec_J
Annex sec_J.1
Annex sec_J.2
Annex sec_J.3
Annex J
(informative)

Guidance for selection of hook size using Annexes C to E

84 Annex sec_J.4
Annex sec_J.5
85 Annex sec_K
Annex K
(normative)

Information to be provided by the hook manufacturer

86 Reference ref_1
Reference ref_2
Bibliography
BS ISO 17440:2014
$215.11