Crane Bearing Mats

Determine area by calculating force pressure.

Crane bearing mats.

When using this type of loading it is important to ensure an appropriate factor of safety is included in consideration of ground bearing capacity mat size. Outrigger pont loading based on 25tground bearing pressure weight of crane weight of load ground bearing pressure weight of crane 72t weight of counterweight 60t 132t weight of load 11 4t. Simply divide the maximum outrigger load by the allowable ground bearing pressure to determine the pad area you need. Heavy lifting mammoet offers state of the art equipment technical expertise and longstanding experience to carry out heavy lifting work safely and efficiently.

The crane outrigger float should be placed squarely in the center of an outrigger pad or crane mat. Determining the load exerted by mobile crane outriggers or crawler crane tracks determining the suitability of the crane mats and bearing capacity of different types of soil. Crane tech teaches a 4 step process. 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.

Once the allowable ground bearing pressure and maximum outrigger reaction force is known you re in the best position to select the right size outrigger pad or crane pads. Responsibility as with all activities on construction sites the effective management of the safety of lifting. Crane weight and attachments plus load weight and rigging obtain the ground bearing capacity gbc permitted for the soil you are set up on. Mat size mat size deducted from point load in 3 in kns soil type value 2 73500 x 9 81 721 035 kns.

This paper is used as a reference in keith anderson s book rigging engineering basics in the chapter on load spreading for mobile cranes. Enviro mat is an innovative sustainable solution that improves the bearing capacity of soil for heavy lifting and transport operations. This is the pressure the soil can withstand. Academia edu is a platform for academics to share research papers.

Calculate the force exerted on the ground i e.