Effective Bearing Length Of Crane Mats

Engineering independent testing of rig mat core 11 12.

Effective bearing length of crane mats.

Crane mat weight distribution 14. Crane mat shipping sizes available 15. Quality assurance 18. My comments on concern 1.

An assembly of. This paper is used as a reference in keith anderson s book rigging engineering basics in the chapter on load spreading for mobile cranes. Effective bearing length of crane mats. It can be done.

Crane weight and attachments plus load weight and rigging. C bearing width of track 5 90 ft p load applied to one mat 207 087 lbs p crane load applied to one mat 207 087 lbs 99 95 of allowable capacity t. Crosslam clt crane mat properties 13. The first product of this work was the paper effective bearing length of crane mats which was presented at the 2010 crane rigging conference in houston.

32 4m crane can lift 4 5 tons crane utilisation load 4t x 100 4 5 88 8 crane utilization too high for hazardous area chemical plant you would need to reduce boom length or reduce crane radius load 4t 10m x 100 5t 80 0 crane utilization good 1 8m dia. The longest distance from the crane s centerline of rotation radius at which a crane with a given boom length can lift any load. Note all mats are to be placed on the ground so full bearing occurs. Examination of numerous designexamples using only the criteria of bending and shear strengthshows that some mats exhibit excessive deflections greaterthan one inch on s of ter soils.

Track bearing length 31 49 ft soil bearing method mat strength method ground bearing pressure. A glossary of common crane and rigging terms. Crane configuration radius. 1 shear check must be done on the timber mat 2 only 3 out of the 5 timbers are being used but all timbers are being considered for distribution.

With some basic information on the crane weight gross load weight and ground bearing pressure then the size of outrigger cribbing for adequate support can be calculated. The mats have 2 7 8 dia rods running through the timbers that have been impacted tight. Calculate the force exerted on the ground i e. Effective bearing length of crane mats ko mats gmbh 22 last a limit of the effective bearing length based ondeflection is proposed.

12m boom length. Specialized carriers rigging foundation. Cleaning phytosanitary elements 19.