Timber Fence Installation

Yes. In NSW, BYDA (Before You Dig Australia) clearance is legally mandatory before any excavation near gas and electricity networks. In all other states, you have a legal duty of care to take reasonable steps to avoid damaging underground services. Australia records approximately 20,000 underground service strikes per year. BYDA is a free service - submit a request online and utility operators respond with service location information. Never dig without checking first.

Powered earth augers rotate at high speed and do not stop quickly once engaged. Even brief contact with rotating parts can cause amputation, scalping, or de-gloving injuries. SafeWork NSW documented multiple serious auger entanglement incidents in 2023 involving young workers. Two-person operation (one on controls, one as spotter) ensures someone can activate the emergency stop if entanglement occurs and monitors the exclusion zone to keep bystanders clear.

Yes. Wet Portland cement reaches a caustic pH of 12-13 within 2 minutes of mixing. Cement burns are deceptive - workers feel no pain for hours while the alkaline chemistry destroys skin tissue. Third-degree chemical burns can develop after just 2 hours of skin contact. Burns typically worsen even after cement is washed off. Rubber gloves (not cloth or leather) are mandatory when handling wet concrete. If concrete contacts skin, flush immediately with water for at least 20 minutes and seek medical attention.

Fence posts in ground contact require H4 hazard class treatment minimum per AS 5604 and AS/NZS 1604. This means the timber is treated for severe decay hazard from in-ground moisture exposure. Above-ground components (rails and palings) require H3 treatment (moderate weather exposure). ACQ (Alkaline Copper Quaternary) treated timber is preferred over CCA (Copper Chrome Arsenate) for residential use as it does not contain arsenic. All cut ends of treated timber should be re-sealed with end-grain preservative.

Sequential trigger only. Contact/bump fire triggers are prohibited. Sequential triggers require the safety tip to be depressed first AND the trigger squeezed for each nail, preventing accidental discharge. This is critical for fencing work where repetitive nailing on long runs increases fatigue and inattention risk. SafeWork SA data shows 77% of serious nail gun injuries over 5 years were apprentices - direct supervision is mandatory for inexperienced workers.

Two-handed petrol or hydraulic augers running at torque produce a sudden bind when the bit hits a tree root, rock, or hard ground. The operator's wrists twist with the handlebar reaction, and the auger keeps turning until clothing, a glove cuff or jewellery catches on the rotating shaft. The Model Code of Practice on Managing Risks of Plant in the Workplace treats the auger as a high-risk powered tool. The working sequence: two-person operation with both operators' hands on the controls, dead-man controls active, an E-stop within reach of both, and close-fitting clothing without drawstrings. Solo operation on "soft ground" is the recurring amputation scenario.

Licensing requirements vary by state. In NSW, a contractor licence is required for fencing work valued over $5,000. In QLD, a QBCC licence is required above certain thresholds. The nationally recognised qualification is Certificate III in Fencing (RII30920), though Certificate III in Carpentry (CPC30220) also qualifies for timber fence construction. A White Card is required for all workers on construction sites in all states.

Not in the firepit. CCA-treated and copper-azole timber to AS/NZS 1604.1:2021 release arsenic, chromium and copper compounds when burned. Burning treated offcuts is a regulatory offence in every Australian state, and workers and customers breathing the smoke pick up an exposure that doesn't show up until later. The disposal pathway is a licensed waste facility — most regional councils accept treated timber at general transfer stations for a small fee, or contracted cutters can drop loads at green-waste facilities that segregate treated from untreated. The on-site control is a separate offcut bin clearly marked, not a pile next to the firepit.

Standard fence post holes are typically 600-900mm deep depending on fence height, post size, soil conditions, and wind loads. A general rule is one-third of total post length should be buried (e.g., 600mm burial for a 1.8m fence with 2.4m posts). Posts are set in concrete footings mixed to manufacturer specification. Higher wind zones (coastal, elevated) may require deeper burial and larger concrete footings. Check local council requirements for boundary fences.

STOP work immediately. For electrical cable: do NOT touch the cable, evacuate all workers at least 8m from the strike, call 000 and the electricity network operator. For gas pipeline: evacuate the area, eliminate all ignition sources (no phones, no vehicle starts), call 000 and the gas network operator, move upwind. For water main: isolate the area, call the water utility. Report all strikes to the network operator immediately regardless of visible damage.