Site Safety During a Fit-Out in an Occupied Building

Most commercial fit-outs in Singapore take place inside buildings that remain in use. The tenants next door are still working, visitors still use the lifts, and the building's fire alarm protects every floor. A fit-out site in these conditions has to keep its own workers safe without putting anyone else at risk.

This article explains how we manage site safety in an occupied building. It is written for clients who want to know what their contractor should be doing, and for newer designers and project coordinators who will spend time on site.

The legal framework

Site safety in Singapore is governed by the Workplace Safety and Health Act and its regulations, administered by the Ministry of Manpower. Everyone with control over the work has duties under the Act. For a fit-out contractor, the core duty is to identify the risks of the work and put controls in place before it starts.

In practice that means a written risk assessment, safe work procedures for the higher-risk activities, and making sure every worker understands both. On a fit-out, the higher-risk activities are usually:

• hot works such as welding, grinding and cutting
• work at height, including ceiling works from ladders and mobile scaffolds
• electrical works and temporary power
• hacking and demolition, which bring noise, dust and falling debris
• moving heavy or awkward items like glass panels and stone through a building in use

Hot works and the fire alarm

Hot works need a permit from building management before they start. A typical permit comes with conditions: a fire extinguisher at the work area, combustible materials cleared or covered, a fire watch during the work and for a period afterwards, and a fixed time window.

Hot works and dusty works can set off smoke detectors, so building management may temporarily isolate the detectors in the work area. We watch that isolation more closely than anything else on site. While the detectors are isolated, that part of the floor has no automatic smoke detection. We keep the isolation to the area and time the permit allows, and make sure the detectors are restored at the end of every shift. A floor left isolated overnight is unprotected.

Work at height

Much of a fit-out happens at ceiling level, including ceiling boards, lighting, ductwork, sprinkler pipes and cabling. We plan the access equipment for each area instead of leaving workers to use whatever ladder is nearby. Mobile scaffolds need locked wheels and guardrails, and ladders are for short, light tasks. Where the building or the regulations require a permit for work at height, we get it before the work starts.

Protecting the building and its occupants

Before starting, we agree the delivery route with building management and protect it. That usually means wall and floor protection in the service lift, floor protection along lobbies and corridors, and cover for any common area finishes along the way.

Hoarding separates the works from the rest of the floor. Dust from hacking and sanding travels easily, and it can trigger smoke detectors outside the work area or get drawn into the air-conditioning. We seal the site and protect the return air openings, with building management's agreement.

Noise is what neighbours notice most. Most office buildings restrict hacking, drilling and other noisy works to evenings or weekends. We schedule those works to suit and keep neighbouring tenants informed through building management.

The site notice and emergency plan

Every site we run has a notice at the entrance with the information someone needs in the first minutes of an incident:

• emergency numbers, 995 for fire and ambulance and 999 for police
• the names and mobile numbers of the project manager and site team
• the nearest hospital and the nearest clinic, with addresses
• the basic steps: stay calm, raise the alarm, call for help and notify the site team

We verify every contact and address for the specific site before the notice goes up. A notice copied from a previous project can send someone to the wrong hospital at the worst possible moment. Everyone on site is also briefed on the building's evacuation route and assembly point, which may differ from what they're used to elsewhere.

Design choices that affect site safety

Decisions made in the design studio affect safety on site. Large glass panels that must be carried down a narrow corridor, ceiling features that can only be installed from tall scaffolding, or fittings that need a technician on a ladder above a staircase all add risk during construction and again every time they are maintained.

Because we design and build, our site team reviews details like these while the design can still change. The safer detail is often also quicker to install and easier to maintain.

Common questions

Who is responsible for safety on a fit-out site?

The contractor controls the site and carries the main responsibility for managing its risks. Clients, building management and subcontractors also have duties under the Workplace Safety and Health Act for what they control. A good contractor makes these arrangements clear at the start.

Why are noisy works done at night or on weekends?

The building is occupied during office hours, and building management sets working hours to protect other tenants. This affects the programme and sometimes the cost, so it should be planned from the beginning.

Why would building management stop our works?

Common reasons include working outside permitted hours, hot works without a permit, damage to common areas and smoke detectors set off by dust. Proper permits and site protection prevent most of them.

What should a client check about their contractor's safety arrangements?

Ask to see the risk assessment, how hot works and work at height will be managed, and the site notice with emergency contacts. A contractor who runs a safe site will have all of these ready.

Does a small renovation need all of this?

The scale changes and the principles stay the same. Even a short job involving drilling or hot works needs a permit from building management and a plan to protect the areas around it.

In summary

• Assess the risks before work starts, and brief every worker on the controls.
• Get permits for hot works, and restore isolated smoke detectors at the end of every shift.
• Plan access equipment for ceiling works instead of leaving it to chance.
• Protect common areas, contain dust and keep noisy works to permitted hours.
• Post a site notice with verified emergency contacts and the nearest hospital.

In an occupied building, a well-run fit-out is one the neighbours barely notice. That comes from planning the permits, protection and emergency arrangements before the first worker arrives.