Ceiling Beam Size (how to quote a crane system)

If the customer requires a ceiling hung system then the ceiling beam size is important because it tells the manufacturer what size beam hangers are required to hold up the runways.

Read more at: http://ping.fm/ARLcH…a-crane-system/

Ceiling height or max height (how to quote a crane system)

The ceiling height or max height isn't really that important. All it pretty much tells the manufacture is: how much height there is to work with. This is only important when the customer doesn't know the height they need to lift/move a specific product.

Doesn't get any easier.

Read more at: http://ping.fm/XFakw…a-crane-system/

Capacity (how to quote a crane system)

The capacity requirements needed for the crane system your quoting (assuming your quoting one) is, by far, the most important item. Capacity helps a crane manufacturer determine:
-the type of system
-what size runways/bridges need to be used
-the maximum distance between two support locations
-the maximum cantilever that can be achieved
-the overall bridge rating requirements
-the number of supports needed
-what bridge spans can be achieved with that capacity
-floor rating requirements (free-standing)
-ceiling rating requirements (ceiling hung)
-trolley/endtruck requirements

see more at http://ping.fm/v5cF9…a-crane-system/

Bays and Multiple Bridges

Systems can utilize multiple bridges. The systems just have to have a capacity rating high enough to accommodate the weight if both bridges we MAX loaded. This is where it gets a little complicated.

If you want the two bridges to be able to travel in the same bay, the bay must be rated to accommodate both bridges MAX loaded.

If you have multiple bridges, however, and stop the bridges from entering the same bay together (In other words, you will never have a bay with more than one bridge in it), each bridge can be rated at 6,000lbs (if we follow the two above examples). Bridges can be stopped from entering bays by installing what's called "runstops" inside the runway. Runstops prevent bridges from traveling any further.

see pictures at http://ping.fm/Ilxad