Housekeeping, access and egress

Housekeeping sounds like the least important part of construction safety. It is not. A floor covered in form ply offcuts, tangled cords and loose rebar ties is a floor where workers trip, twist ankles and fall into openings they cannot see. Debris on an upper floor becomes a falling-object hazard for everyone below. Piles of packaging and wood scraps feed fires. A blocked stairway can trap workers in an emergency. And a site that is visibly messy tells every worker that corners are being cut. This lesson covers housekeeping, how workers get to and from their work safely, and how they get out quickly when they must.

Why housekeeping matters

Slips, trips and falls on the same level are among the most common causes of lost-time injuries in construction. Many of them are trips over material left in walkways, cords stretched across floors and debris on stairs. Poor housekeeping also contributes to serious events. Workers have fallen through floor openings that were hidden under scraps of drywall or plastic sheeting. Nails sticking out of boards cause puncture wounds that become infected. A bucket left near a deck edge can be kicked off and fall several floors.

Cottonwood Place treats housekeeping as part of every task, not a separate job. Each crew cleans up as it works, and nobody leaves a work area at the end of the shift until it is clean. Dev Sandhu's main job in his first weeks is clean-up on the structure floors, and his foreman, Luis, tells him why it matters: "You're not the janitor. You're the reason nobody falls through a hole they can't see."

Clean as you go

The most effective housekeeping is done by the crew that makes the mess, while they make it. On each floor, Tallgrass Construction Ltd. provides bins for wood, metal, general waste and recycling, and the forming and drywall subcontractors are responsible for their own scraps. Specific habits matter:

• Pull or bend nails in used lumber and form material before stacking it, and never leave a board with nails pointing up.
• Coil cords and hoses when not in use, and route them overhead or along walls rather than across walkways. Where a cord must cross a walkway, use a cord cover.
• Pick up rebar ties, screws and bolts before they scatter across the deck.
• Keep walkways, stairways and exits clear, with nothing stored on stairs or landings.
• Clean up spills right away, especially form oil, curing compound, hydraulic fluid and water on smooth concrete.
• Remove packaging from the floor as soon as materials are unpacked; plastic wrap and cardboard are slippery and burn easily.
• Cap or bend protruding rebar so that no one can fall onto an exposed end. Impalement on rebar is covered in HSE-371.

Getting debris off the floors

On a multi-storey building, waste has to come down safely. Throwing debris off a floor edge or down an opening is never allowed. Material dropped from height can kill someone below, and the bounce and scatter are unpredictable. Waste comes down from upper floors at Cottonwood Place in one of three ways: in bins lifted by the crane, in the construction hoist, or through an enclosed debris chute that runs down the outside of the building into a covered bin. The area around the bottom of the chute is barricaded, and the chute is kept closed when not in use. Construction regulations in both Canada and the United States restrict dropping material from height and require enclosed chutes or barricaded drop zones where debris is dropped.

Storing materials

Materials stored badly cause their own injuries. Stacks of block, drywall or lumber can tip over and crush feet and legs. Materials stored near a floor edge or opening can be knocked or blown off. Heavy loads placed on a new slab or a scaffold can overload it.

• Store materials on level, firm ground or on a floor that can carry the load, and ask before landing heavy loads on a new deck.
• Stack materials so they are stable, with heavy items at the bottom, and limit the height of stacks.
• Keep materials well back from floor edges, openings and excavations. On the structure floors at Cottonwood Place, nothing is stored within 2 metres of an open edge or opening.
• Secure light materials such as insulation, plastic sheeting and empty buckets against wind, especially on the upper floors.
• Do not store anything on or against guardrails.
• Store pipe and rebar in racks or on dunnage, with ends chocked so they cannot roll.

Access: getting to the work

Workers need a safe way to reach every place they work. On a building under construction, that changes as the building rises. In the excavation phase, access means ramps and ladders into the excavation. In the structure phase, it means temporary stairs, ladders and the construction hoist. In the finishing phase, the permanent stairs are usually in use.

Stairs

Stairs are the preferred way to move between floors because they let workers carry tools and use a handrail. At Cottonwood Place, Tallgrass Construction Ltd. installs temporary stair towers as the structure rises, and the permanent stairs are used as soon as they are poured, with temporary handrails and guardrails on any open sides. Stairs are lit, kept clear of materials and checked for loose treads and missing rails during inspections. Where a stair has pan treads that will be filled with concrete later, the pans are filled with wood or another temporary material so that workers do not step into an empty pan.

Ladders

Ladders are a common way to reach a work area, but they are also a common source of falls. A ladder used for access between levels should extend at least 1 metre (3 feet) above the landing, be secured at the top and bottom, and be set at about 4 to 1: one unit out at the base for every four units of height. Workers face the ladder and keep three points of contact while climbing, with tools carried in a belt or raised with a hand line. Lesson 5 covers ladders and falls in more detail.

Walkways, ramps and runways

Workers also need safe routes across the site at ground level, between the gate, the trailers, the laydown area and the building. Cottonwood Place keeps pedestrians and vehicles apart with a fenced walkway from the pedestrian gate to the trailers and the building entrance, marked crossings where the walkway meets the vehicle route, and a covered walkway where the route passes under the crane. Ramps and runways are built strong enough for their use, with cleats or a non-slip surface on steep sections and guardrails where they are more than a short height above the ground.

Snow and ice

Winter in Winnipeg adds snow, ice and short days. Ice on stairs, ramps, scaffold planks and steel beams causes serious falls. Tallgrass Construction Ltd. clears snow from walkways, stairs and decks at the start of each shift, spreads sand or grit on icy surfaces, and keeps the main routes lit during the dark mornings and late afternoons. Workers wear boots with good tread or add traction aids where conditions call for them, and nobody walks on steel or formwork that is covered in ice. When temporary heat is used to protect concrete in winter, the heaters and fuel cylinders are placed and checked so they do not create fire or carbon monoxide hazards; lesson 10 covers carbon monoxide.

Egress: getting out

Egress means the way out. In an emergency, such as a fire, a structural problem or a gas leak, workers on the upper floors must be able to leave quickly and safely. A site that is well organized for normal work can still fail at egress if the stairs are blocked, the routes are dark or the only way out passes through the danger.

• Every floor at Cottonwood Place has at least two ways down, normally the two stair towers, with the hoist as an extra route but never counted as an emergency exit.
• Exit routes are marked with signs and kept clear at all times. Nothing is stored in a stair or on a landing, even for a few minutes.
• Routes are lit, with temporary lighting on its own circuit so a tripped breaker on a floor does not plunge the stairs into darkness.
• Doors on exit routes, including temporary hoarding doors, open easily from the inside without a key.
• Fire extinguishers are placed near each stair and at each hot work area, and workers know where they are.

Housekeeping and fire

Construction sites burn more easily than finished buildings. The walls have not been closed in, fire protection systems are not yet working, and there is plenty to burn: wood formwork, packaging, insulation, plastic sheeting, fuel and solvents. Hot work, such as welding, cutting and grinding, and temporary heating add ignition sources. Good housekeeping removes much of the fuel. At Cottonwood Place, combustible waste is removed from each floor daily, flammable liquids are stored in approved containers in a designated area, smoking is allowed only in the designated area near the trailers, and every hot work job has a permit, a fire watch and an extinguisher on hand.

Inspecting housekeeping

Owen Hartley and the workplace safety and health committee score housekeeping on every floor during their weekly inspection. Each floor is checked against ten items, such as clear walkways, secured covers, cords off the floor and no materials near edges, and gets one point for each item in order. The program below calculates scores for one week's inspection with invented results, and flags any floor that scored below eight.

# Weekly housekeeping scores (invented results). One point per item in order, out of 10.
items = ["walkways clear", "stairs clear", "covers secured", "cords off floor", "nails removed",
         "no material near edges", "bins not overflowing", "spills cleaned", "rebar capped", "exits lit"]
results = {
    "Level P1": [1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
    "Level 1":  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1],
    "Level 2":  [0, 1, 0, 0, 1, 1, 0, 1, 1, 1],
    "Level 3":  [1, 1, 1, 1, 1, 0, 1, 1, 0, 1],
}
for floor, r in results.items():
    score = sum(r)
    missed = [items[i] for i, ok in enumerate(r) if not ok]
    flag = "  FOLLOW UP" if score < 8 else ""
    print(f"{floor}: {score}/10{flag}" + (f"  missed: {', '.join(missed)}" if missed else ""))

Level P1: 9/10  missed: cords off floor
Level 1: 9/10  missed: bins not overflowing
Level 2: 6/10  FOLLOW UP  missed: walkways clear, covers secured, cords off floor, bins not overflowing
Level 3: 8/10  missed: no material near edges, rebar capped

Level 2 scored six, and two of its misses, a cover that was not secured and a walkway that was not clear, are the kind that lead to serious falls. Owen took the results to the next coordination meeting. Level 2 was where the mechanical and electrical crews had just started, and neither had been given a waste bin. Tallgrass Construction Ltd. added bins, and the two foremen agreed to a fifteen-minute clean-up at the end of every shift.