GPR Concrete Scanning in Riverside, CA

GPR scanning sends radar pulses through a concrete slab or wall and reads the reflected signals to produce a real-time image of what's embedded inside. The operator marks the surface with the locations of rebar, post-tension cables, conduit, electrical, plumbing, and voids before any cutting or drilling begins.

Hitting a post-tension cable during a core drill or flat saw cut is a serious structural event — it can injure crew, damage equipment, and create significant liability. GPR scanning before the job eliminates that risk and gives the GC and owner confidence that the scope was executed safely. DSI can mobilize a GPR scan prior to any cutting scope or as a standalone service.

Scan before you cut or core any time the drawings don't confirm what's inside the concrete. That is almost always the case in post-tensioned slabs, older buildings with incomplete as-builts, slabs with embedded conduit or radiant lines, and anywhere a cut through a cable, conduit or pipe would be a safety, schedule or liability problem.

GPR is also used on its own to map rebar layout and spacing, measure cover and slab thickness, and look for voids before repairs.

1. Define the scan areas around planned cuts, cores or anchors with the GC and lead trade.
2. Scan the surface in a grid with ground penetrating radar.
3. Mark rebar, post-tension cables, conduit and other targets directly on the surface, with approximate depths.
4. Walk the results with the GC or trade and adjust cut and core locations as needed.
5. Hand off to DSI's saw and drill crews on the same mobilization when we are doing the cutting too.

Every job is quoted from its actual scope, fixed-price or hourly. The main factors are:

• Number and size of scan areas
• Whether locations are spread across a building or grouped together
• Access and working height (slabs, walls, overhead decks)
• Whether the scan is standalone or combined with DSI cutting and coring
• Schedule and after-hours requirements

GPR is non-destructive and uses no ionizing radiation, so other trades can keep working nearby while we scan.

Like any scanning method it has limits: very dense reinforcement, some conductive materials and wet concrete can reduce depth and clarity. We tell you what we can and cannot see so cutting decisions are made on accurate information.

DSI provides GPR scanning from our Riverside yard across the Inland Empire, including Corona, Ontario, San Bernardino, Fontana, Rancho Cucamonga, Moreno Valley, Temecula, Jurupa Valley, and we mobilize for projects in Southern California, the High Desert, Palm Springs and the Coachella Valley, the Central Valley, Northern California. See all California service areas.

Related guides: Cutting or Coring a Post-Tension Slab and Concrete Core Drilling Explained.

Call (951) 737-2077 or send your scope and plans for an estimate; we respond within one business day.