8.5.2 Separate Trolley and Hoist or Combined Hoist

The frequency of use of a hoist attached to a trolley will generally determine whether or not a combined hoist and trolley is to be used. Many users find it convenient to leave only the trolley on the runway and use a hook suspended hoist when a lift is required. A combined hoist and trolley will usually take up less headroom than a separate hoist and trolley of the same working load limit and duty.