Hoists for the construction of dry-stone walls

Load-lifting equipment

Many construction sites where dry stone walls are built, are not accessible for cranes or excavators. How can large stone blocks in such places be moved and transferred? I will show below attempt a classification of simple lifting tools, which can be worn by hand in the area. < br/>

Wire rope hoist

A load can be drawn on the ground.

Cable car

A load can be vertically moved up steep terrain or left down.

 

Three-leg

A load can be raised in place and lowered. A lateral move is not possible.

Example for the use of three leg:

Tripod for the installation of large deck stones during the construction of a retaining wall in Freienbach / Switzerland, 2005

Bipod

A load can be raised in place and lowered. Also a slight shifting is possible by the bipod is tilted more or less.

Example of use a bipod:

Application of two legs on various construction sites:

Cable crane

A load can be moved along a line.

Example for the use of a cable crane:

Application of two legs on various construction sites:

Derrick

, The Derrick is a guyed by wire cables mast with a boom. An attached load can be moved around the mast in the radius of the jib. The Derrick was mainly used in the Anglo-Saxon linguistic area.

 

 

Historical example for the use of a Derrick's:

Portable, demountable, self developed Derrick, 2011:

[small portable dry stone guy derrick lifting gear]