UDT Trener

Question #618

What does the marking 25 t + 5 t on an overhead crane mean?

Co oznacza napis na suwnicy 25 t + 5 t?

a
the crane has two hoisting mechanisms, one rated at 25 t and the other at 5 t, and they may operate simultaneously

suwnica posiada dwa mechanizmy podnoszenia, jeden o udźwigu 25 t, drugi 5 t i można pracować nimi jednocześnie

Correct answer

b
the crane has one hoisting mechanism rated at 25 t, which may be overloaded by a maximum of 5 t

suwnica posiada jeden mechanizm podnoszenia o udźwigu 25 t, który można maksymalnie przeciążyć o 5 t

c
the crane has two hoisting mechanisms, one rated at 25 t and the other at 5 t, and they may not operate simultaneously

suwnica posiada dwa mechanizmy podnoszenia, jeden o udźwigu 25 t, drugi 5 t i nie można nimi pracować jednocześnie

d
none of the above answers is correct

żadna z powyższych odpowiedzi nie jest prawidłowa

Why?

The plus sign indicates two hoisting mechanisms (mechanizmy podnoszenia) with rated capacities (udźwig) of 25 t and 5 t that may operate simultaneously. Each mechanism must remain within its own capacity, following the manufacturer's instructions. The additional 5 t is not an allowable overload for the 25 t mechanism.

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Categories for this question

Overhead cranes (II S)Special-purpose overhead cranes (I S)
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