How Is a Wool Classing Room Designed for Accurate Grading?

The engineer specifies the lighting like a laboratory: high color-rendering sources at the daylight color temperature, with the CRI and spectrum documented — not just 'bright LEDs.' Fixtures are arranged in a grid over the table that eliminates directional shadows, with the engineer checking the layout against the classer's working positions so the classer's own body never blocks the light on the fleece. Dimmable drivers let the classer tune intensity through the day, and the engineer provides a small reference area with the same light where questioned fleeces get a second look. The table is built for the work. The engineer details a slatted top at a height that spares the classer's back, sized so a full fleece spreads for skirting and sorting, with the surrounding floor clear for the bins. Bin layout follows the clip's lines — the engineer consults the classer on how many lines the operation runs and draws bin positions for short, natural throws. Everything the classer touches all day is within reach; everything else is out of the way.

Local exhaust at the classing table is sized to capture velocity at the fleece, not just air changes for the room — the engineer designs a perimeter slot or downdraft arrangement that pulls the dust burst of each thrown fleece away from the classer's face without disturbing the grading. Ductwork runs cleanable and short to the collector, and the engineer keeps the system quiet, because a roaring fan next to the classer all day degrades the concentration the grading depends on. The room environment is controlled for consistency. The engineer separates the classing room's air from the shearing board's dust, provides tempered ventilation so the classer works in comfort through the season, and details surfaces for end-of-day cleaning. Lighting controls are simple and labeled; emergency lighting covers the room for the early starts. Where the classing room sits in an unincorporated county shed, the engineer still designs to the same standard — the buyer grading the clip does not care about the jurisdiction, only the accuracy.

Use this checklist before the classing room design is finalized: • High-CRI lighting at daylight color temperature, documented spectrum, dimmable • Fixtures gridded over the table for shadow-free illumination from multiple angles • Neutral-tone table surface; slatted top letting dirt and short locks fall through • Table sized to the crew; bin layout drawn for the operation's actual wool lines • Local exhaust at the table sized to capture velocity, ducted short and cleanable • Classing air separated from shearing-board dust; tempered general ventilation • One-way flow: board to table to bins to press, no backtracking or floor contact • Press adjacent with power, headroom, and bale handling access