The most expensive problems on a new turf field hide underground. On delivery day the surface looks flawless either way, and nothing at the fence line tells you how the base was built. The difference shows up in the first real storm, as standing water, soft spots or seams under strain. That is why schools benefit from watching the construction itself, not just the ribbon cutting.
This walkthrough follows the job in work order, from site survey through demolition, grading, base stone, edging, roll layout, infill and final sign-off. At each stage it flags what your staff should check on the spot and which early signals mean trouble. Our team has fielded the same construction questions from school projects across several continents, and nearly all of them start below the surface. The goal is simple: catch mistakes while they are still cheap to fix.
What Happens Before Any Turf Arrives
Every durable field begins as a paper exercise. A proper site survey tests the soil for compaction and drainage, maps where existing water travels, and confirms how trucks and base equipment will reach the site. It is the first real deliverable of synthetic turf field construction, long before any roll ships. Skipping that survey is the most common root cause we have seen in field failures that arrived at our desk for a second opinion.
Demolition comes next, and it means more than tearing up old grass. Worn turf, asphalt patches, topsoil and roots all leave the site, because buried organic matter keeps decaying and settles unevenly under load. Haul routes deserve a moment of planning too, since dump trucks crossing a soft schoolyard in spring make their own repairs necessary. What remains should be stable native soil, roughly shaped toward the design elevation.
Permits deserve one line of caution. Projects that change runoff patterns often trigger local stormwater and grading approvals, and those clocks run on somebody else’s schedule. Start the paperwork before the first machine arrives.
From here on, every artificial turf installation runs in one direction: each stage rests on the one beneath it. Sign-off check one is therefore simple. Before base work starts, the survey report should show soil test data and a drainage assessment, and the cleared subgrade should carry no visible organic debris.
Grading and Drainage Design Schools Should Check
In synthetic turf field construction, grading turns a flat dirt bowl into a drainage machine. Published field-practice sources quote surface slopes of 0.5 to 1 percent in some specifications and 1 to 1.5 percent in others. The spread itself is the lesson: slope is a design output for your site, not a catalogue constant. What every source agrees on is direction, because water must fall consistently toward the sidelines or a collection point, with no accidental low spot in the middle.
Water leaves a field by two routes. Surface runoff rides the slope to the edges. The rest filters through the carpet and base into perforated drain pipes laid in trenches below, with each run sloped toward an outfall or collection basin. Both routes have to stay open for either one to work.
Drainage trouble announces itself quietly, long before it cancels a game. Watch for water that lingers more than a day after rain, silt lines along the perimeter, infill drifting into shallow dips, or fresh settlement after a freeze-thaw cycle. Each signal points at a specific cause, from a reversed slope to a drain line that was never bedded correctly.
The deeper engineering sits in how drainage bases are designed. At site level the check is simpler: ask for a water test before the base is signed off, then watch where the water actually goes. Sign-off check two is that observation itself, because a field that passes a hose test on grading day rarely puddles in September.
Base Stone, Compaction and Flatness Tolerances
Beneath every g