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keenaseng, this is exactly my issue. Most, if not all tower cranes, have been designed for out of service wind speeds of 94 mph from the rear in accordance with the old FEM 1.001 rules. The 94 mph is a 10-min average, which if I am doing the conversion correctly with the Durst curve is a 133...

Can anyone recommend references or literature to compare different design wind speeds such as the 3 second gust and the fastest mile? I frequently design tower crane foundations in the Southeast of the US so out of service wind speeds play a larger role in the foundation design. I am looking...

I agree a beam on elastic foundation is the way to go on an undisturbed site with adequate geotechnical information, however, we are on a construction site and extensive cut and fill has been performed in the area. The timbers will be placed on the ground and the mat length outside the column...

We have a relatively large column load that will be applied temporarily and we are thinking of using 12"x12" x 5' timbers to distribute the load. Two layers of timbers will be used and the two layers will be laid perpendicular to each other (bottom layer running north-south and top layer...

Foundations for tower cranes can be of many sorts and often are similar to the building they are helping to construct. The crane location can be within the building footprint or outside the building footprint. The location is often chosen by the contractor based on the construction sequence...

Spread footings are by far the foundation of choice. When you move into the southeast you get into more of piles and caissons and even in the midwest we deal with a lot of auger cast in place piles. You are correct in that moment typically dictates design. These cranes have anywhere from...

As a few have already posted, tower cranes can free stand a few hundred feet. This all depends on the crane design and anticipated wind loading on the crane (locality). Foundation types can be spread footings, pile and cap, caisson and cap or special steel cross frames sitting on top of...