Tied tower compliance check module

SMART Compliance

Current Limitations:

The tied tower is limited to one or two bays along the length of the elevation.

A bridge cannot be added because of the limited length of the tied tower scaffold.

Inner cantilever platforms are not presently permitted in the TG20 compliance check for a tied tower.

Rakers are not presently permitted in the TG20 compliance check for a tied tower.

The input panel options are similar to that of the Independent scaffolding compliance check module, except for the changes below.

These options are as for the Independent scaffolding compliance check module.

These options are as for the Independent scaffolding compliance check module, except for the changes below:

Input	Description
Tower length	The length of the scaffold tower in bays.
Tie pattern	Select from the tie layouts defined in TG20:21 Operational Guide section 15.1: Tie pattern A: ties at alternate lifts. Tie pattern D: ties at every lift in an alternating pattern. Tie pattern A should be used to tie a scaffold with lift heights greater than 2.0 m at every lift.
Top lift tied	Specifies whether to tie at the top lift at alternate standards, as described in section 7.5 of the TG20:21 Operational Guide. This can increase the maximum permitted height of a TG20:21 compliant scaffold, depending on the scaffold configuration and wind exposure. If this option is selected for TG20 tie pattern A, additional ties are provided at the top lift if not already provided by the tie pattern. Scaffolds with debris-netting or sheeting should be tied at the top lift at the ledger-braced frames to be TG20 compliant.

Input

Description

Tower length

The length of the scaffold tower in bays.

Tie pattern

Select from the tie layouts defined in TG20:21 Operational Guide section 15.1:

Tie pattern A should be used to tie a scaffold with lift heights greater than 2.0 m at every lift.

Top lift tied

Specifies whether to tie at the top lift at alternate standards, as described in section 7.5 of the TG20:21 Operational Guide.

This can increase the maximum permitted height of a TG20:21 compliant scaffold, depending on the scaffold configuration and wind exposure.

If this option is selected for TG20 tie pattern A, additional ties are provided at the top lift if not already provided by the tie pattern.

Scaffolds with debris-netting or sheeting should be tied at the top lift at the ledger-braced frames to be TG20 compliant.

You can specify any Add-ons, if required, to the scaffold.

Input	Description
Pavement lift	Specifies whether the scaffold will include a TG20:21 compliant pavement lift to act as a pedestrian thoroughfare in accordance with TG20:21 Operational Guide section 10.2.
Stabilisation	Determines how the pavement lift will be stabilised, as described in TG20:21 Operational Guide section 10.3. The following options may be used: Tie the pavement lift at alternate (ledger-braced) standards. Plan brace every bay of the pavement lift and tie at a lift not more than 2.0 m above the pavement lift. Reduce the height of the second lift so that it is no more than 4.0 m from the ground and tie it at alternate standards. If the scaffold has only a pavement lift it must be stabilised using ties. The other options require at least two lifts.
Cantilever fan	Specifies whether to include a TG20:21 compliant light-duty cantilever protection fan in accordance with TG20:21 Operational Guide section 10.5.
Cantilever fan lift	The number of the lift at which the fan is located, counting upward from ground level zero.