rentafert.blogg.se - Catenary scaffold installation

#CATENARY SCAFFOLD INSTALLATION INSTALL#
#CATENARY SCAFFOLD INSTALLATION PROFESSIONAL#

Here are some real world installations and our pole strength test results.

The first point to make in this article is are you sure you really need guy wires ? Two inch diameter poles, particularly the thicker 14 gauge/2.0mm type, really are quite strong and scaffold poles are even stronger. It should be borne in mind that this actually puts more strain on the wires and anchors due to the leverage effect of the unsupported length of pole above, but despite that (and the not recommended use of screw eyes as anchors ! ) it’s still there having been put up in 2001, having survived some vicious winds…. We reckoned (correctly as it turned out) that supporting it half way up the pole would be sufficient.

#CATENARY SCAFFOLD INSTALLATION INSTALL#

We couldn’t be arsed to take the whole install down to get the hook collar at the top ! Note : standing on the chimney is not advisable…. Also, our install is actually “semi stayed”, this is because it was done in a bit of a rush (the wind was whipping the pole around like nobody’s business) which resulted in, to be frank, a bit of a bodge. Most cable stayed transmitters are not firmly fixed at the bottom, they’re mounted on a ball (tubular masts like Winter Hill for instance, are not).

Actually, in one very important respect, they’re rather different.

#CATENARY SCAFFOLD INSTALLATION PROFESSIONAL#

Outrigger scaffolds: Scaffolds and scaffold components must be designed by a registered professional engineer, and constructed and loaded per that design.Guy / stay wire supported masts, your aerial pole or a TV transmitter, exactly the same principle ! See ATV's aerial array and Ridge Hill transmitter (in the picture below).Fabricated frame scaffolds (tubular welded frame scaffolds, welded end frame scaffolds, walk through frame scaffolds) over 125 feet in height must be designed by a registered professional engineer, and constructed and loaded according to that design.Tube and Coupler scaffolds over 125 feet in height must be designed by a registered professional engineer, and must be constructed and loaded according to that design.Pole scaffolds over 60 feet in height must be designed by a registered professional engineer, and shall constructed and loaded according to that design.Non-mobile scaffolds must not be moved horizontally with workers on them, unless a registered professional engineer designed the scaffold specifically for the move.Designers for certain scaffolds also must be registered professional engineers.Scaffold designers are workers who are qualified to design scaffolds. 451(f), General requirements: "Use", OSHA Standard. 454(a), Training requirements, OSHA Standard. Possesses a recognized degree, certificate, or professional standing, or,.OSHA defines a qualified person as one who:

The training must enable employees to recognize the hazards associated with the type of scaffold being used and to understand the procedures to control or minimize those hazards. Scaffold users are workers whose work requires them to be supported by scaffolding to access the area of a structure where that work is performed.Įmployers are required by OSHA standards to have a qualified person provide training to each employee who performs work while on a scaffold.

Determining the maximum load for the scaffold.

Determining the type of scaffold necessary for the job.

By extensive knowledge, training, and experience has successfully demonstrated the ability to solve or resolve problems relating to the subject matter, the work, or the projectĪ qualified person must do adequate preplanning to assure the safe erection and use of the scaffold.

Possesses a recognized degree, certificate, or professional standing, or.

Scaffolds must be designed by a qualified person and be constructed and loaded in accordance with that design. Requirements for Designing and Constructing Scaffolds

Has authorization to take prompt corrective measures to eliminate such hazards.

Is capable of identifying existing and predictable hazards.

A competent person is defined as one who: OSHA requires employers to provide training by a competent person to each employee who is involved in erecting and/or disassembling a scaffold. Training and Competent Person Requirements Erectors and dismantlers are workers whose principal activity involves assembling and disassembling scaffolding before other work can begin, and after that work, or a portion of it, has been completed.