Keeping construction workers safe during landslides

The challenge of keeping construction workers safe during landslides is not simply about moving away from a slope. Rain can saturate ground, a cracked hillside can release suddenly, and blocked access may trap crews far from help. Workers also face flying debris, damaged services, unstable temporary structures and the emotional strain of working beside a disaster.

A strong safety response treats the whole site as one connected system. Planners identify ground movement before weather worsens, contractors adjust work sequencing, and every worker knows when to stop, evacuate and regroup. For Australian builders, that means working with Safe Work Australia guidance, site-specific Safe Work Method Statements and state regulators rather than relying on instinct. For Nepal, where monsoon rain and earthquake damage combine with remote terrain, the same disciplined approach can protect crews and strengthen communities for the long term.

Why ground conditions change so quickly

Heavy rain is only one trigger. Excavation cuts at the base of a slope, spoil heaps placed uphill, leaking water pipes and overloaded retaining walls can reduce stability. An earthquake may leave cracks that are hard to see but fail without warning. Crews should know the signs: fresh surface cracks, sagging fences, muddy seepage, tilted trees, hammering or rumbling from the ground, and water flowing where it did not flow before.

These warning signs matter in both settings. In Australia, intense rain can affect excavation sites in Brisbane and cyclone-prone areas of Far North Queensland, while the steep slopes and saturated soils around the Blue Mountains west of Sydney have produced damaging landslides. Australian crews often call each other “tradies” and rely on a site shed for briefings, but informal habits must never replace a competent geotechnical assessment. A quiet site can be more dangerous than one showing obvious movement.

A site-wide risk management approach

Control begins with mapping the hazard. Mark unstable ground, slope toes, drainage channels, buried services and safe access routes before work starts. Use a site-specific rainfall and ground-movement trigger system tied to official forecasts, then name the person authorised to stop work. Workers need a clear muster point and an alternative route because the normal road may disappear. Keep workers, visitors, delivery drivers and nearby residents outside the possible run-out zone.

In Australia, this usually sits within a principal contractor’s coordination of subcontractors, work health and safety plans, and a Safe Work Method Statement where the task is high risk. Regulators and insurers expect risks to be managed through the hierarchy of control, not merely by supplying hard hats. The same planning discipline supports the non-profit One Home Foundation, which works with Nepal’s Chepang community and families affected by natural disasters on shelters, integrated settlements and health facilities. Safe construction there can underpin secure housing and stronger futures for vulnerable families.

Protective systems, equipment and training

Physical safeguards must be installed before work continues. Temporary drainage may redirect clean water, but it must not send concentrated runoff toward neighbouring slopes or homes. Retaining systems, shoring, guarded excavations and certified temporary works need design and installation by competent people. Exclusion zones should follow the credible movement path rather than an arbitrary tape distance. Remote sites also need reliable radios, first-aid resources and a plan for medical retrieval.

Training turns plans into action. Toolbox talks should use the actual site map and include scenarios such as a blocked escape route, a worker reporting cracked ground, or a forecast changing during concrete pours. Personal protective equipment remains necessary, but high-visibility clothing, boots and helmets do little against moving soil. Lighting and colour should also be considered around access routes, machinery and temporary accommodation; colour and visibility guidance offers a useful perspective for checking contrast in changing daylight.

Safer homes need safer construction practices

Temporary protection is only part of the task. Permanent homes on sloping land need proper foundations, engineered retaining structures, stable drainage and accessible paths that remain usable in severe weather. Local builders should be included early because knowledge of the soil, rainfall pattern, materials and settlement layout is essential. Low-cost housing is not safe housing if maintenance instructions are absent or if a retaining wall has been treated as a decorative feature.

This is where One Home Foundation’s wider mission becomes relevant. Its article on secure housing and illness examines the connection between secure housing and reduced illness in rural Nepal. Protecting construction crews is therefore part of a longer chain: fewer injuries mean less disruption, more reliable shelter can be completed, and families gain safer places from which to recover. Good site governance protects both the people building homes and the people who will live in them.

Field controls for changing ground conditions

A practical checklist should separate preparation from the actions taken when conditions deteriorate. It should be adapted to the slope, season, project scale and local emergency capacity; a generic threshold is not enough.

Before work and as forecasts change

• Have a competent person inspect slopes, drains, excavations and retaining structures after significant rain or seismic activity.
• Record official Bureau of Meteorology warnings and set project-specific stop-work and evacuation triggers.
• Check escape routes, communications and the muster point, and brief all contractors, drivers and visitors.
• Keep spoil, fuel and heavy materials away from slope crests, edges and drainage paths.

During an alert and after ground movement

• Stop work immediately when warning signs appear or a trigger level is reached; do not send anyone back to retrieve equipment.
• Move people along the pre-planned route to a verified stable area, and account for every worker and visitor.
• Keep clear of the suspected run-out zone, including at the base of the slope and beneath unsecured structures.
• Reopen the site only after a documented inspection and competent-person approval, with corrective work completed first.

The final check is behavioural: supervisors must see people acting on the plan. A stop-work decision should never be treated as a delay or a lack of commitment. Workers who report ground movement early should be thanked because a few hours of lost access is far less costly than a fatality.

From safer sites to stronger communities

Safe construction is a shared responsibility, and there are practical ways to contribute. Australian builders, engineers and vocational trainers can share site-readiness checklists and landslide emergency drills; donors can help fund drainage, retaining works, safe access and protective equipment; and volunteers can support training and community preparedness. The experience of working on Australian sites is relevant, but any guidance must be adapted to local soil, climate, language and building practices.

Support One Home Foundation by donating to shelter construction, volunteering specialist time, or helping raise awareness of safe housing and construction among communities affected by landslides. Back the organisation’s efforts to give vulnerable families more resilient places to live. Safer sites, stronger skills and dependable shelter together turn good intentions into lasting homes.