shear legs technical , also: sheer legs technical

There are two guy wires, front and rear, to support the shear legs.

Shear legs only need two guys whereas a gin pole needs at least three.

Pickets should be length of shear legs away from midfield line.

The shear legs are put in place.

Fixed shear legs are most commonly found on floating cranes known as sheerlegs.

The rear guy may be reeved to allow adjustment of the angle of the shear legs.

However, conventional techniques, using Neolithic technology as basic as shear legs, have been demonstrably effective at moving and placing stones of a similar size.

Shear legs, also known as sheers, shears, or sheer legs, are a form of two-legged lifting device.

In a simpler construction, a shearleg derrick can be assembled from two posts to form A-frame shear legs without any crossbar.

Shear legs are a lifting device related to the gin pole, derrick and tripod (lifting device).

The barge carries a shear legs crane which is the largest barge crane ever used on the West Coast.

Since the project took place before the development of powered cranes, the raising of the columns was done manually using shears (or shear legs), a simple crane mechanism.

Three year warranty Range of Experiments 1. Experimental determination of forces in shear legs 2. Comparison with theoretical prediction 3. To assess the effect of changing the shear leg geometry.

The gin pole is considered a form of derrick, called standing derrick or pole derrick, distinguished from sheers (or "shear legs") by having a single boom rather than a two-legged one.

Shear legs may be permanent, formed of a solid A-frame and supports, as commonly seen on land and the floating sheerleg, or temporary, as aboard a vessel lacking a fixed crane or derrick.

This includes jacks, block and tackle, hoists, rotating screws, gantries, A frames, gin poles, shear legs, sheerleg, windlasses, lifting harnesses, fork lifts, hydraulic lifting pads, air lift bags, and cranes.

The shear legs and block and tackle are being used to lift the aircraft from the Royal Air Force road transporter and is operated by members of the City of Sheffield Fire Brigade.

As a boy he'd helped Uncle Stacey change a fusion bottle by manpower, pulleys, and a jury-rigged shear legs because another ship was already in the small dry-dock where all Bergen and Associates' power equipment was built.

Before the event the crew sets up their equipment, which includes a thin shot line attached to the tower simulating the crow's nest of a sinking ship, a high line made of a hawser, a block and tackle, a dead man with a cleat, an endless whip with a block, a chair, and shear legs.