Materials, Tools and Site Work
The core module — sheets, long loads, bagged products, bricks and blocks, concrete, overhead and floor work, trenches, stairs, weather, vibration, and planning the lift before the truck arrives.
Last reviewed September 2026 · Part of Manual Handling Training for Construction and Trades Workers
Key learning points
- Carry sheet materials and long loads safely, alone and in teams
- Explain why the move to 20 kg bags did not make bag handling safe on its own
- Recognise the controls for bricks, blocks, pavers and concrete work
- Manage overhead, kneeling, trench, stair and ladder work as manual handling risks
- Account for heat, weather and tool vibration in the day's plan
- Plan deliveries, sequencing and pre-starts so materials are handled once
Sheets and long loads
Plasterboard, plywood, formply, fibre cement, MDF and glass share the same problems: they are large for their weight, hard to grip, block your view and catch the wind. A standard 13 mm plasterboard sheet at 2400 by 1200 weighs roughly 25–28 kg; fire-rated and wet-area boards are heavier, and 6 m lengths weigh more than double. A 17 mm formply sheet is around 30 kg and often wet, oily or splintered. Glass adds a sharp edge and no tolerance for a drop.
Carrying sheets
- Carry sheets on edge, not flat — one hand low at the front edge, one hand higher, the sheet against your body
- Use a sheet handle or carry clamp so the low hand is not hooked under the edge in a bent posture
- Anything over 2.4 m or over about 25 kg is a two-person carry: one at each end, the leader calling the route
- Outdoors, wait for a lull in the wind or move sheets on a cart — a gust on a sheet is sudden force on a load you cannot hold
- Move stacks with a drywall cart or panel trolley; carry only the last few metres
- Stack sheets on edge near the wall they are for, not flat in the middle of the room where they will be moved again
- For ceilings, use a panel lifter or a mechanical dead man rather than holding sheets overhead
- Glass is moved on an A-frame trolley and lifted with suction cups or a vacuum lifter, never carried by the edges over distance
Long loads — timber, pipe, conduit, rebar, scaffold tube
- Find the balance point before lifting; carry long loads at the balance point with the front end slightly raised
- Watch both ends, especially when turning corners, passing doorways and moving near other people
- Anything you cannot control at both ends is a two-person carry — one at each end, walking in step
- Do not carry long loads on a ladder or on the shoulder up stairs where the top end can catch
- Pass long loads through window openings or use a hoist rather than negotiating stairwells
- Order timber, pipe and conduit cut or bundled in lengths you can handle, and have bundles landed close to the frame or run
- Bundled rebar is a crane load — break bundles down at the point of use, not at the gate
Bagged products
Cement, tile adhesive, render, grout, sand and premixed concrete now mostly come in 20 kg bags, after the Australian industry moved away from 40 kg bags over the last decade or so. That change halved the peak force in a single lift, and it was a genuine substitution control. It did not make bag handling safe on its own. The number of bags for a job doubled, so the frequency of lifting doubled. The carry distance, the twisting from the ute tray to the barrow, the bend to the bottom of a pallet and the shift of a slumping bag are all unchanged. The weight on the bag is one risk factor among six or seven.
There is no legal weight limit
Australian WHS law does not set a maximum weight for a lift. Some sites and suppliers set their own guidance figures, and 20 kg bags are a good example of an industry deciding a lighter unit is more practicable. Treat any figure as a guide to peak force only. Risk is judged on the whole task — how often, how far, in what posture, on what ground.
Handling bags
- Have the pallet landed as close to the mixer, pump or work area as the truck or telehandler can get
- Move bags on a sack truck, trolley or barrow; carry only the last step
- Work the pallet from the top down and turn to face the bag before lifting — do not twist from the pallet to the mixer
- Set the mixer or tub so bags are cut and emptied at waist height, not lifted overhead
- Split the pallet across the job so bags are close to each area before work starts
- Order silo, bulk-bag or premixed delivery for larger volumes so bags are not handled at all
Bricks, blocks, pavers and concrete — the hazard is repetition and posture as much as weight
- Bricks
- A standard clay brick weighs 3–3.5 kg and a bricklayer moves several hundred a day, each at least twice. Have packs craned or telehandled onto the scaffold lift or beside the wall, not stacked at the gate; use brick carriers and tongs so several bricks move in one grip at waist height; set mortar boards and stacks on stands so the work stays between knee and shoulder
- Blocks
- A standard concrete block is around 16–19 kg and is lifted with the arms extended. Use block carriers or two-person handling for large units, AAC or lighter blocks where the design allows, and a block splitter or saw stand instead of a hammer and bolster on the ground
- Pavers
- Large-format pavers of 20 kg or more are laid at ground level in a bent posture. Use vacuum or mechanical paver lifters, a kneeling creeper or knee pads, and split pallets along the run so nothing is carried far
- Barrowing concrete
- A heaped barrow of wet concrete can weigh 150 kg or more. Pump wherever access allows, use a motorised barrow for long runs, set barrow boards over soft ground and reo, and place the truck or pump hopper as close to the pour as possible
- Screeding and finishing
- Screeding is a sustained bent-forward posture — use a long-handled or vibrating screed and rotate people through it. Use a bull float and long-handled tools where you can; kneeling on boards is for edges and detail
- Vibrators, trowels and compactors
- All are vibration sources. Limit trigger time and share the work, and plan the pour so the crew is large enough to finish before fatigue and heat take over
- Rotation
- Rotate laying, carrying and finishing with other tasks so nobody repeats one movement for the whole day
Postures and places — where the work happens is a risk factor
- Overhead work
- Ceilings, conduits, ducts, sprinkler pipe, fire collars and insulation put the arms above the shoulders for long periods; the load is light and the injury comes from holding it there. Set platforms, scaffolds and trestles so the work is at chest to eye height, use a panel lifter or props to hold sheets and pipe while they are fixed, use a drill stand or an extension pole where the tool allows, and alternate overhead runs with work at bench height
- Kneeling and floor work
- Tiling, floor laying, skirting, waterproofing and finishing put you on your knees with your back bent for hours. Knee pads and kneeling creepers reduce contact pressure, stand-up spreaders and rollers take some of the work upright, and keeping tiles, adhesive and tools within arm's reach removes the twist. Rotate tasks and stand up regularly — the knee and back problems of the floor trades develop slowly and are hard to reverse
- Trenches and confined spaces
- Trenches, roof spaces, underfloor voids and risers offer no room to lift well, so plan how materials get in and out before anyone climbs in. Lower pipe and fittings on a rope, sling or excavator and pass tools down rather than carrying them on a ladder. Use the machine for bulk digging and keep hand shovelling to trimming. Where a trench is deep enough to require a SWMS, put the handling method in it. Set time limits for roof space and underfloor work and swap people through
- Uneven ground, stairs and ladders
- Walk the route before every new carry, because site routes change daily. Keep routes clear of leads, hoses, offcuts and other trades' materials, and light stairwells before power is on. Do not carry loads up stairs without a handrail or edge protection in place — use the hoist or wait. Keep three points of contact on a ladder; anything that needs a hand goes up by rope, hoist or tool belt. Use ramps and barrow boards rather than lifting barrows over steps and kerbs
- Weather and heat
- Heat brings fatigue on early, and fatigue removes the control that keeps a loaded barrow on the boards and a sheet upright in the wind. Plan the heaviest handling for the coolest part of the day, keep water and shade close, take the breaks in the site's heat plan, and treat wind as a hazard for sheets and roof sheeting. Rain makes formwork, timber and steps slippery and adds weight to timber and bags; hot roof sheeting and cold steel both change how you grip
Tool vibration
- Choose the lowest-vibration tool that does the job — a mounted breaker or excavator attachment for heavy demolition rather than a hand-held breaker for hours
- Keep bits, blades and chisels sharp; a blunt tool needs more force and more time
- Let the tool do the work with a relaxed grip rather than leaning on it
- Limit trigger time and rotate operators through the day, especially on breakers, grinders and rotary hammers
- Keep hands warm and dry — cold makes vibration damage worse
- Gloves reduce cold and abrasion but do little for vibration; anti-vibration gloves are not a substitute for tool choice and trigger time
- Report tingling, numbness or white fingers early
Planning the lift
The safest lift is the one that does not happen. On a well-run site most of the manual handling has been planned away before the truck arrives: deliveries are booked for when the crane or hoist is available, the drop is agreed at the pre-start, materials land on the floor and near the wall where they will be used, and the trades are sequenced so nothing is stacked, moved and stacked again. The SWMS for high risk work names the aids and team lifts, and the toolbox talk covers the day's lifts, the route and who is doing what with whom.
Plan the delivery, not just the lift
- Where does it land?
- As close to the point of use as the truck, crane or telehandler can reach — on the floor it is for, beside the wall it is for
- When does it land?
- After the stairs, hoist and edge protection are in, and while the crane is on site — not the Friday before
- How is it split?
- Part-pallets and bundles per area or per floor, so nothing is moved twice by hand
- What aid moves the last metres?
- Drywall cart, sack truck, brick carrier, trolley, panel lifter, barrow — booked and on site before the delivery
- Who lifts what?
- Team lifts named in the SWMS and pre-start, apprentices paired with experienced people, rotation planned
- What could go wrong?
- Wind, rain, a truck that cannot get in, a hoist that is booked out — and the fallback that is not 'carry it up the stairs'
Double handling is the hidden multiplier
Every time a stack is moved by hand because it landed in the wrong place or arrived too early, the crew takes the whole risk of that load again for no progress. Ask at every pre-start where things are landing and why. Sequencing and delivery placement are the biggest manual handling controls most tradespeople never think of as manual handling controls.
Practical scenario
Scenario: sheets to the first floor
A plastering crew starts on a two-storey house. The board is booked to arrive at seven on Monday. The stairs are in but the handrail is not, the site has no hoist, and the crane that placed the trusses left last week.
How should the crew plan the job?
Reveal the explanation
Talk to the builder before Monday. Options include having the supplier deliver with a crane truck and land the first-floor board through a window opening or onto a landing platform, hiring a material hoist or a conveyor for the week, or getting the handrail in before the delivery so the stair is usable for a two-person carry with sheet handles. Book a panel lifter for the ceilings. What the crew should not do is accept a kerbside drop and start carrying 6 m sheets up an unprotected stair because the truck has arrived.
Practical scenario
Scenario: pipe into the trench
A plumber is laying 150 mm PVC stormwater in a 1.8 m trench. The pipe lengths are stacked on the far side of the site because the excavator was working where the truck wanted to drop them. His apprentice is carrying each 6 m length across, then lowering it into the trench by hand while the plumber reaches up to take it.
What should change?
Reveal the explanation
Almost everything about the material flow. The trench is deep enough to require a SWMS, so the handling method should be in it. Get the excavator to move the pipe stack to the trench edge, or bring lengths across on a trolley, two people to a length. Lower pipe with a sling on the excavator or on a rope from the edge, never by an apprentice bending over the trench while someone reaches overhead from below. Keep people out of the trench until the pipe is down and under control.
Practical scenario
Scenario: the render job
A renderer is working alone on a single-storey house. He has 60 bags of render mix on a pallet in the driveway, the mixer beside it, and is carrying buckets of mixed render around the house to wherever he is working.
What would you change?
Reveal the explanation
Move the mixer, not the buckets — set the mixer and a part-pallet near each elevation before starting that wall, using a trolley to shift bags around the house once rather than carrying buckets fifty times. Cut and empty bags at waist height, keep buckets to a weight he can carry close to the body, and consider a render pump for the larger elevations. Working alone he also needs a plan for what happens if the day gets hot or a lift goes wrong, because there is nobody to call stop.
Knowledge check
These questions are for your own learning. They are not part of the final assessment.
1. Why did the move from 40 kg to 20 kg bags not make bag handling safe on its own?
The lighter bag was a genuine substitution control for peak force, but frequency, distance, posture and ground are separate risk factors that a lighter unit does not touch. There is no legal weight limit.
2. You need to get a 2.4 m plasterboard sheet along a windy driveway. Which approach is most appropriate?
Sheets act as sails. A cart removes the carry; on edge with a handle keeps the sheet controlled and close to the body; long or heavy sheets need two people.
3. Which is the most effective control for a bricklaying crew carrying bricks from a pack at the site gate to a scaffold lift?
Landing the pack where it is used eliminates most of the manual task. Brick carriers then handle the last few metres at waist height.
4. An electrician is running conduit across a ceiling for the day. What is the single change that reduces the most risk factors at once?
Platform height changes posture, sustained force and fatigue at the same time. Props or clips to hold the run and limits on trigger time address the rest.
5. What is the most useful question to ask at a pre-start about a delivery arriving that morning?
Delivery placement and the aid for the last few metres decide how much manual handling the crew does. Double handling from a poorly placed drop is the hidden multiplier of risk.