Planning Guidelines AUVA

AUVA

PLANNING GUIDELINES OF SINGLE ANCHOR POINTS ON ROOFS.

Working on roofs is amongst the most dangerous of activities.
The slightest moments of inattention can have extremely serious, even fatal consequences. Austrian standard ÖNORM B 3417 deals with safe working on roofs.

According to this, roofs should planned in such a way that people who later carry out the necessary repair and maintenance work are permanently protected (by constructional measures or roof safety systems, such as anchorage devices). In general, the safety equipment should be permanently attached to the structure.

The entire roof surface is a danger area.
When a person is within a distance of 2 m from an edge, there is a particular risk of falling.
In this case, appropriate protective measures must be taken. Such areas must be be closed off in a suitable way, if it is not necessary for a person to be present in them while carrying out work.


Risks of falling are deemed to be:

  • Falling from the edge of a roof
  • Falling through roof surfaces
  • Falling through a roof opening

Examples of areas with risk of falling: particularly dangerous area 2 m

Ancorage devices.

An anchorage device consists of one or more anchor points. It connects restraint systems with the substructure.
For a surface greater than 150 m2, and from a fall height greater than 3 m, the legislator (in Austria) (ÖNORM B 3417) prescribes a lifeline system. In all events, a restraint system is to be preferred.

RECOMMENDED DESIGNS FOR FLAT ROOFS AND FLAT INCLINED ROOFS.

Recommended designs for flat roofs and flat inclined roofs.

Red zone: 5.36 m2, ideal system arrangement for roof shapes, for low-snow areas, for roofs wider than 17 m

Distance of the system > 2.5 m from the edge in order to make snow clearance easier, individual anchorage points in the corners reduce the red zones, max: 8.5 m

FLAT ROOFS WIDER THAN 17 M

Flat roofs wider than 17 m

→ Distance of the system > 2.5 m from the edge in order to make snow clearance easier.
→ Single anchor points in the corners reduce the red zones, max: 8.5 m.

 

FLAT ROOFS UNTIL 17 M

Flat roofs until 17 m

→ Distance of the system > 2.5 m from the edge in order to make snow clearance easier.
→ Single anchor points in the corners reduce the red zones: 20,60 m²

Recommended designs for pitched roofs and flat inclined roofs.

Recommended designs for pitched roofs and flat inclined roofs.

Safety hook for roof access, pitched roof with safety roof hooks
In high-snow areas or for roofs without superstructures: Horizontal arrangement of anchors along the ridge in combination with safety roof hooks (for regular maintenance and snow clearance over the entire roof surface)

Attention: Snow guards as per ÖNORM B 3418 are required

Körperhaltevorrichtung mit horizontaler

Body restraining system with horizontal mobility in comination with safety roof hooks for steep roofs

Horizontal anchoring system along the FIRST combined with safety roof hooks (for regular maintenance and clearing off snow over the entire roof surface)

Notice: Snow arresting system required as per ÖNORM B 3418

Different types of inclined roofs

Access to the anchorage device.

Danger area, determine the access to the anchorage device, exit with additional anchorage point within reach, particularly dangerous area 2.0 m, roof access.
In addition to providing the anchorage devices, safe access to the roof and to the anchorage device must be created.

Anschlageinrichtung (Copy)

Installation documenation.

The person responsible for installation must provide complete documentation (photo-documentation, acceptance protocol, etc.), and thereby provide the proof of skilled and professional installation.
This forms the essential basis for later inspections.
AUVA Planning Guidelines (pdf in German language)

AUVA
GTC
Agreed
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