hoistingmechanisms.htm

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HOISTING MECHANISMS

TO LIFT THE DOME PANELS

 

The methods used for lifting the dome panels includes; Small cranes, Highlifts (all terrain scissors forklifts often used by roofers), and a steel scaffold rigged with wheels and winch.  Other lifting devices successfully employed by our dome owners include: a boom added to a tractor, a block and tackle, and a hoist fastened to the top of the framework with wood ramps up the side of the dome.

 

Monthly rentals on transverse lifts also called Boom Lifts, Horizontal Boom Fork Lifts, Roofing Lifts, Shooters are available from National Rental Chains like US Rentals, Hertz Equipment Rentals, United Rentals, etc.  The companies can be found in the telephone book.

 

To lift the panels, a rope is put through the steel mesh at each of the three points and ties back on itself.  Once the panel is in place, the ropes are untied.  

 

HOISTING PANELS FOR THE 34' AND SMALLER DOMES: The panels of our smaller domes can be placed using a steel scaffold rigged with wheels and winch.  The panel is then held in place with a prop support until the seam concrete cures. 

 

HOISTING PANELS FOR THE 40' AND LARGER DOMES:  The panels for the larger domes may be best placed using a crane that is capable of lifting 300-400 pounds, 25 feet up and 25 feet out. Rope is put through the steel mesh at each of the three points and ties back on itself.   With a four-person work crew, use of a temporary wooden rib system and proper bracing of the panels, two rows of panels of a 48 dome can be placed in about a day of crane time.  In most cases, total crane rental time will vary from about 10 hours for a smaller dome to 24 hours for a 48 dome.

 

 

Click on the photo to enlarge it.

 

 

                                                                                    

 

            These two photos of panels being placed with a telescoping boom.

 

 

 

 

                                                         

                            To lift panels, this dome owner is using

                             front end loader.

 

 

 

 

                                                                        

 

                                                            Panels are being lifted by a boom

                                                            that was welded on to a tractor.

 

 

 

                                                                           

 

                                In all three of these photos, panels are being lifted by a boom attached to center

                                rolling scaffold.  There is a counter weight that you cannot see.

 

 

 

                                                                       

 

 

                            These panels are being lifted with a block and tackle in each of these three photos.

        

 

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