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How Do Engineers Detect Voids Beneath Concrete Slabs?
Learn how engineers use GPR and targeted testing to investigate potential voids beneath concrete slabs and assess loss of support.
October 20, 2026
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Learn how engineers use GPR and targeted testing to investigate potential voids beneath concrete slabs and assess loss of support.
Learn how chain drag surveys and hammer sounding help identify areas of possible hidden concrete delamination in slabs, decks, and structural elements.
Learn how GPR concrete scanning locates rebar, conduits, and potential voids, and when verification may be needed.
Professional deck repair services help identify these problems, restore damaged components, and extend the useful life of your outdoor structure. Whether you have a small
Concrete may look strong and uniform from the outside, but internal problems such as cracks, voids, honeycombing, and poor compaction can remain hidden. The Ultrasonic
Concrete is one of the most widely used materials in construction, but its quality cannot always be determined by looking at the surface. Cracks, voids,
Buildings, bridges, industrial facilities, and other structures gradually experience wear and deterioration due to weather, repeated loading, moisture, chemical exposure, and aging materials. Many problems
Voids in concrete can develop due to poor compaction, improper placement, segregation, inadequate vibration, or trapped air. Although these defects may not always be visible
Structural safety is a critical concern for buildings, bridges, industrial facilities, and other concrete structures. Over time, structures can develop cracks, corrosion, voids, honeycombing, and
Introduction California has taken significant steps to prioritize the safety of its residents and ensure the integrity of buildings, particularly when it comes to balconies.
Honeycombing is a common concrete defect caused by insufficient compaction, poor workability, improper placement, or inadequate vibration. It creates voids and gaps between aggregates, reducing
Non-Destructive Testing (NDT) plays an important role in evaluating the condition, quality, and durability of concrete structures without causing significant damage. NDT methods allow engineers
If you’ve ever walked past a bridge, a parking garage, or an old apartment block and wondered “how do engineers actually know this thing is
A building doesn’t usually collapse because someone made one big mistake. It collapsed because a dozen small ones went unchecked — a batch of concrete
You step out onto your third-floor balcony with a cup of coffee, and the boards give just slightly under your weight. Not a creak —
You step out onto the balcony, and there’s a slight give underfoot — a little bounce, almost like walking on a trampoline that’s lost most
You patched the crack. Maybe you sanded it smooth, repainted over it, stood back, and felt good about a weekend well spent. Then a few
If you own a multifamily rental property in California with three or more units, the SB 721 balcony inspection deadline you may have been putting
The quality and integrity of concrete are critical to the safety and longevity of buildings,bridges, parking structures, and other infrastructure. While visual inspections canidentify surface
Reinforcing steel corrosion is one of the leading causes of deterioration in reinforcedconcrete structures. As corrosion progresses, steel expands, creating internal pressurethat causes cracking, delamination,
Concrete delamination is one of the most common forms of deterioration found inparking structures, bridges, balconies, podium decks, and commercial buildings.Because delamination often develops beneath
Concrete structures naturally deteriorate over time due to environmental exposure,loading, corrosion and moisture intrusion. Before repairs or rehabilitation can bedesigned, engineers must understand the condition
Modern structures require regular inspection to identify deterioration, safety concerns, and maintenance needs before problems become severe. Traditional inspection methods often involve scaffolding, lifts, lane
Locating embedded elements within concrete—such as rebar, post-tension cables,conduits, and voids—is critical before coring, cutting, or drilling. Choosing the rightscanning method can prevent costly damage,
