Suspended Baskets Safety Requirements

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Questions and Answers

What is the minimum free standing height required for those parts of the suspended basket where persons are intended to stand?

1.5 m

3 m

2 m (correct)

2.5 m

What is the purpose of providing a roof to the suspended basket?

To reduce wind resistance

To prevent weather damage

To increase the capacity of the basket

To prevent falling objects from entering the basket (correct)

What is the minimum weight of each person considered in the strength calculations for the suspended basket?

70 kg

90 kg

80 kg (correct)

60 kg

What is the factor by which the loading considered is increased in the design calculation?

2 Signup and view all the answers

What type of material must suspended baskets be manufactured from?

Incombustible Signup and view all the answers

What is the minimum safety factor required for chains used in load lifting attachments?

8 × (weight of basket + rated capacity) Signup and view all the answers

What is the purpose of the aperture dimensions in the roof of the suspended basket?

To prevent objects larger than a 20 mm sphere from passing through Signup and view all the answers

What is the minimum requirement for the roof of the suspended basket in terms of impact resistance?

Withstand the impact of a steel ball weighing 7 kg, falling from a height of 2 m, without plastic deformations exceeding 50 mm Signup and view all the answers

What is the minimum vertical distance required between the floor of the basket and the crane hook?

3 m Signup and view all the answers

What type of wire rope grip is NOT allowed as a rope end termination?

Wire rope grips Signup and view all the answers

How should load lifting attachments be fitted to the basket?

With tools only Signup and view all the answers

What is the purpose of having drainage in the floor of the basket?

To prevent water accumulation Signup and view all the answers

What is the standard that specifies the construction of thimbles?

EN 13411-1 Signup and view all the answers

What type of basket does not require the load lifting attachment to be fitted with tools?

Baskets used on Container Handling cranes with a spreader Signup and view all the answers

What is the purpose of slip resistant flooring in the basket?

To improve traction Signup and view all the answers

How should the floor of the basket be maintained in position to the frame?

With welding Signup and view all the answers

Study Notes

General Safety Requirements

Suspended baskets must conform to the safety requirements and/or protective measures outlined in this standard.
Suspended baskets must be manufactured from incombustible materials.

Structural Requirements

The minimum free standing height of the suspended basket where persons are intended to stand is 2 m.
The roof of the basket must be able to withstand the impact of a 7 kg steel ball falling from a height of 2 m without plastic deformations exceeding 50 mm.
Any aperture in the roof of the basket must have dimensions that prevent a sphere with a diameter of 20 mm from passing through.

Corrosion Protection

Suspended baskets must be protected against corrosion.

Strength Calculations

When calculating the rated capacity of the suspended basket, the weight of each person must be taken as at least 80 kg plus at least 40 kg of equipment for each person.
The loading considered must be increased with a factor of at least 2 when used in the design calculation.

Load Lifting Attachments

Suspended baskets must be attached to the crane hook with flexible load lifting attachments consisting of steel wire rope slings or chain slings.
Steel wire rope slings must comply with EN 13414-1, and chain slings must comply with EN 818-4, with an enhanced safety factor of at least:
- 10 × (weight of basket + rated capacity) for steel wire ropes
- 8 × (weight of basket + rated capacity) for chains
Load lifting attachments must be fitted to the basket in such a way that they can only be removed with tools.

Floor Requirements

The floor of the basket must be maintained in position to the frame by welding or some other equally effective means (e.g. bolted).
The floor of the basket must be slip resistant.
The floor of the basket must have drainage.

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Description

This quiz is about the safety requirements and protective measures for suspended baskets, including material specifications and minimum height standards.