Flagpole safety in Switzerland: wind, liability and work at height

A flagpole stands outdoors for years, often near people, cars and buildings. It has to withstand storms, and anyone working on it is quickly several metres above the ground. This guide summarises which rules and recommendations matter in Switzerland for the safety of flagpoles.

Wind and storms

Wind is the greatest load on pole, foundation and flag. The federal natural hazards portal describes the danger levels at which MeteoSwiss issues wind warnings:

The boundary between the zones is at 1,000 m above sea level in the Jura and on the Plateau north of the Alps, and at 1,600 m in the Alps and south of the Alps. According to the portal, even at level 2 objects that are not, or not adequately, secured can fall over; as the response before a storm it names securing loose objects outdoors. Many pole owners take the flag in when there is a storm warning, because a hoisted flag considerably increases the wind load on the pole.

Heimgartner Fahnen AG points out that a taller pole is more exposed to storms and that diameter and wall thickness determine stability. Manufacturers state the wind speed and flag size for which their poles are designed.

Stability and standards

Switzerland has no standard specifically for flagpoles. Cantonal building laws require structures and installations to be stable. The Canton of Vaud states in Article 20 RLATC that structural components are designed according to the SIA structural standards; for wind loads, that is standard SIA 261. For foundation and fixing, the manufacturer’s specifications, matched to these loads, are what count in practice.

Liability

A flagpole that is permanently connected to the ground or a building can be a structure within the meaning of Article 58 of the Code of Obligations. Under that article, the owner of a building or other structure is liable for damage it causes through defective design or construction or inadequate maintenance. Liability does not depend on fault. Recourse against others responsible, such as an installation company, remains possible. Regular checks and documented maintenance can play a part if damage occurs. More in the guide to flagpole maintenance.

Work at height

Rope, pulley and finial sit at the top of the pole. A flagpole offers a ladder hardly any support, and the ladder can slip sideways. In its leaflet “Sicher arbeiten mit tragbaren Leitern und Tritten” (2023 edition), Suva sets out the principle that portable ladders should only be used if there is no more suitable alternative. For flagpoles, such alternatives exist:

• A tilting pole can be lowered so that all parts can be reached from the ground.
• A pole in a ground sleeve can be pulled out with help and maintained on the ground.
• For tall poles, specialist firms offer maintenance with an aerial work platform.

Electricity and lightning

Aluminium and steel poles conduct electricity. The distance to overhead lines is therefore important when putting up a pole and when lowering a tilting pole. Whether a pole needs lightning protection depends on the location and the building and can be assessed by electricians.

Children, rope and cleat

A loose halyard can be a hazard for small children. A cleat at a sufficient height or an internal halyard with a lockable hatch reduces the risk of children playing with the rope and the flag. A pole guard at the foot protects the pole from lawnmowers and strimmers, whose knocks can weaken the wall.

After a storm

After a storm, a visual check shows whether the pole is still upright, whether the foundation and ground sleeve are undamaged, whether the finial and pulley are secure and whether the rope is frayed. If a pole moves or leans, this points to damage to the foundation or fixing. More in the guide to flagpole repair.