Use; Winches And Pulleys; Overlapping Of Personnel; Overloads - Marcegaglia Buildtech Realpont system 75 Instruction Manual

Winches and Pulleys

When winches or pulleys – even temporary – are used, the parts of the
scaffolding affected by such equipment must be checked.
Thee checks must be shown on the calculation report if the equipment
is also to be used during work execution.
The carrying capacity of the winch or pulley must always be visible and
adjustable. In the absence of specific information in this regard, the
following formula may be used to determine the dynamic increment of
the vertical load in suspension for carrying out correct static checks:
ϕ = coefficiente di incremento dinamico
V = velocità del carico in movimento espresso in m/sec
ϕ = 1 + 0,6 x V
PERSONNEL SAFETY DURING INTERMEDIATE ERECTION
STAGES
In addition to the prescriptions stipulated by local regulations, the main
areas on which to focus attention are described below.
Scaffolding workers
Th scaffolding safety plan must have the names and specific responsi-
bilities of the persons involved in organizing the work and erecting the
scaffolding.
Holding and auxiliary cables
Check the correct positioning and use of the holding and auxiliary
cables as prescribed by the regulations in force and check in detail the
stipulations regarding their length and strength.
Use of personal safety devices
The correct use and efficiency of safety clothing having the characteristics
already described in the 'Personnel safety' section must be checked periodi-
cally. The period is determined in relation to the duration of the work and
of the personnel present on the work site.
Hoisting of materials
This is a dangerous phase of the works during which the following
precautions must be taken:
• Check the load capacity, the type and the correct functioning of the
winch and the pulley. Also check the 'Winches and Pulleys' section regar-
ding technical veri cations.
• Organize the work in such a way that there are never loads suspended
above the heads of workers mounting the equipment.
• Check that the bay on which the raised material is to be stacked is sui-
table for carrying the weight. Check the technical speci cations and the
calculation report to ascertain the projected technical capacities.

Use

Overlapping of personnel

Organize the erection teams in such a way that they are never positio-
ned one above the other on the same part of the scaffolding.
While works are underway the scaffolding may undergo structural
modifications due to the particular requirements of the work site not
take into account during the planning stage.
It is important that the scaffolding be checked continually and that, as
a minimum, the following are verified.

Overloads

In the event the end user requests unusual overloads, notices indicating
the load capacity must be positioned on the scaffolding and checks that
the assembled structure corresponds to the project design and the calcu-
lation report must be carried out.
Passive security elements
Periodically checks must be carried out to ensure that passive security
devices have not been removed from the scaffolding; these include:
• overhead and frontal guardrails
• frontal and overhead toeboards
Planks with trapdoors must be shut if not in use.
The anchorages must never be removed unless such is called for under
the work program and in the erection plan of the scaffolding.
Machinery present on the scaffolding
Unless otherwise prescribed, boring machinery, vibrators, compressors
and whatever else could affect the stability of the scaffolding must not be
used.
In the event the job calls for such type of machinery, check that the
dynamic increase of the load has been taken into account in the calcula-
tion report.
Earthing
The presence and the type of earthing present on the scaffolding must
be calculated in accordance with the regulations in effect.
In the same way the documentation relating to the machinery on the
scaffolding must always be checked and brought up to date.
Instruction manual Prefabricated frames
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