Instant Upright BS 1139-6, Инструкция по сборке

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SPAN 500 BRIDGED TOWER
•
As part of the risk assessment, wind conditions must be considered and reviewed regularly, depending on
the duration the structure is onsite.
• When wind exceeds Beaufort force 4, cease using the tower.
•
Platform must be installed with vertical distances between them not exceeding 2m when assembling and
dismantling.
• If wind is expected to reach Beaufort force 6, tie tower to a rigid structure.
• If winds of Force 8 are forecast, dismantle the tower or remove to shelter
•
Sheets, tarpaulins, cladding or similar, must not be attached to the tower as these will significantly increase
any side loads from wind and will potentially make tower unstable.
•
Beware of wind turbulence, funnelling effect around buildings and updraft on stairways.
•
The maximum allowable side load on a tower is 30kg by one person only.
•
Warning : Excessive side loads due to working from the tower may cause the structure to become unstable.
•
The tower must not be used if there is a risk of lightning strikes.
Wind speed
Force Peak mph Peak km/h Peak m/s Guidance
4
18 29 8.1 Moderate breeze
– raises dust & loose paper
6 31 50 13.9 Strong breeze
– difficult to use umbrella
8 48
74
20.8 Gale force
– walking is difficult
CARE AND MAINTENANCE
•
Keep all equipment clean, especially spigots
and sockets where frames join. Spigots
should fit easily into sockets. Lubricate with
light oil.
•
Remove dirt or paint from adjustable legs with
a light brush, lightly oil the leg locks.
•
Do not strike or hammer components. Do not
throw or drop onto hard surfaces.
•
Lightly oil spring mechanism of the hooks.
•
For transport and storage, components are
best stored vertically.
•
Damaged parts should be repaired or
replaced. Contact your equipment supplier for
advice.
•
Ensure parts are not damaged by excessive
strapping forces when transported.
•
Refer to the Instant Upright website for a
detailed inspection guide:
www.instantupright.com
3-T SAFETY STANDARD - THROUGH THE TRAP
This is an approved method of tower construction
which, if carried out by a competent person,
complies with current safety legislation.
Construction- basic principles
•
Always install the trapdoor over the ladder (if one is fitted).
•
Ensure the trapdoor hinges to the outside of a double width
tower (not to the centre).
•
Once the platform has been installed, climb, using the
approved method and sit in the trapdoor opening.
Fig 1
•
While seated, attach horizontal braces to the frames to form guardrails on both sides of the platform.
•
See assembly instructions for specific placement of guardrails.
•
2 braces are normally required each side; although bracing frames can be used on
the outside if desired or specified in the instructions.
•
Only when the platform is fully guarded is it safe to stand up on the platform.
Dismantling
•
Unlock the brace ends furthest away from the trapdoor.
•
Sit through the trapdoor as per Fig.1
•
Do not remove braces until sitting in the trapdoor.
•
NEVER STAND ON AN UNGUARDED
ASSEMBLY, USE & DISMANTLING
3-T SAFETY STANDARD
– THROUGH THE TRAP
WARNING
NEVER STAND ON AN