School Floor Collapse

GCS on Aug 7, 2019 2:07:17 PM

School floor collapse

School floor collapse

As we state on our Filling Voids page...

Undetected voids are a silent threat that can cause slabs and structures to sink or collapse without warning. Neglect can result in serious injury, litigation and even death.  GCS can protect your property and assets from these possibilities with the latest void detection and repair technologies.

Nothing illustrates this concept more clearly than a recent video from Brazil.  Luckily, no one was seriously injured when a school floor collapsed beneath a room full of students.

Click here to see the video which is embedded in an article about the incident.

The students and school administrators were lucky in this case, since everyone escaped unscathed for the most part.  Will you be as lucky if a similar incident occurs on your property?

As we point out on our Ground Penetrating Radar page...

The Deep Look wireless ground penetrating radar system uses a patent pending unique triple frequency antenna design to create the most accurate image possible of the area beneath your valuable structures.  Ground Consolidation Services will use the Deep Look GPR to take remove all uncertainty and take the guesswork out of the diagnostic process.  A crystal clear understanding of the problem provides the best foundation for accurate, durable and lasting repairs.

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Topics: All Posts, Soil Stabilization, Void Fill

Leveling and Stabilizing Steps and Stoops

GCS on Aug 2, 2019 5:05:26 PM

Leveling and Stabilizing Steps and Stoops

Leveling and Stabilizing Steps and StoopsIf you notice your steps or stoop separating from your house (as pictured at the bottom of this article) you may very well have a problem with unstable soil.  Loose and weak soil can undermine structures of all types.  When faced with a sinking structure, you generally have 4 choices:

The "Before" photo below shows a front stoop that was separated from a house due to unstable soil.  GCS stabilized the soil and lifted the stoop back into place, as pictured in the "After" photo.

stoop-before-and-after

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Topics: Slab Lifting, All Posts, Soil Stabilization

Leveling and Stabilizing Pool Deck Slabs in the Atlanta Area

GCS on Jul 31, 2019 5:12:59 PM

Leveling and Stabilizing Pool Deck Slabs in the Atlanta Area

Leveling and Stabilizing Pool Deck Slabs in the Atlanta AreaWe posted a blog article this past Spring titled Eliminate Pool Deck Trip Hazards Before the Summer.  In case you missed it, here's an excerpt...

There are a couple very common causes for the soil washout that creates the environment for a sinking pool deck slab:

  1. Cracks in the pool structure leaking water into and soil and washing it out.

  2. Loose back-fill on sloping properties.

The first cause is pretty self explanatory.  The second cause may need a little elaboration. Basically, if a pool is built on sloping property, the construction team will back-fill soil onto the side of the pool that needs it. If this soil is not compacted properly, it can start to washout over time.

Regardless of the cause, soil washout removes support from the pool deck slab and creates the condition for sinking.

In our blog post Atlanta Area Pool Deck Repair, we describe the GCS pool deck repair process from an actual job...

We repaired the problem by first filling the void with high strength polyurethane foam, and then leveling the sunken slabs.  The foam strengthens the soil as it cures, to prevent it from washing out.  In addition to the incredible strength of the foam, its light weight provides an advantage over alternate methods such as “mudjacking” with cementitious grout.  Heavier cement-based grouts will often sink or slide over time.

An additional advantage was the reduction of trip hazards due the leveling of the slabs.  Potential injury and litigation risks due to unlevel slabs were eliminated.

This repair took a maximum of about 6 hours.  The pool deck was ready for use 30 minutes after the crew cleaned up and left.  The customer was happy with the efficient and thorough repair job.

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Topics: Slab Lifting, All Posts, Soil Stabilization, Void Fill

Repairing Uneven Walkway Slabs to Eliminate Trip Hazards

GCS on Jul 26, 2019 2:04:54 PM

Repairing Uneven Walkway Slabs to Eliminate Trip HazardsRepairing Uneven Walkway Slabs to Eliminate Trip HazardsWalkways & sidewalks are everywhere:

  • City Streets
  • Schools & Universities
  • Apartment & Condo Complexes
  • Office Parks
  • Shopping Malls & Strips
  • Recreational Parks
  • Golf Courses

The list goes on.  The important point is that they remain safe and in good condition.  A sunken walkway slab is a trip hazard and litigation risk.  Responsible property owners and managers should routinely have walkways checked.  If you find a sunken slab, consider having it leveled with high-strength polyurethane

Whatever you do, don't skimp on the solution.  As our polyurethane material supplier Alchemy-Spetec points out in their amusing blog post, How NOT To Repair Trip Hazards, property owners will sometimes go to great lengths to avoid addressing this problem.  Some of the more inadequate "solutions" include:

  • Pouring cement or asphalt on the sunken edge to build a small "ramp" up to the level of the adjacent slab...
    How NOT to Repair a Tripping Hazard 2

  • Coating the edge of the trip hazard with bright colored paint...
    How NOT to Repair a Tripping Hazard 5

  • Grinding the edge of the level slab down to meet the sunken slab...
    How NOT to Repair a Tripping Hazard 4

  • Ignoring the problem completely...
    How NOT to Repair a Tripping Hazard 6

DON'T BE THAT GUY OR GAL!  Inspect your walkways regularly and employ a safe, permanent solution like concrete leveling with high-strength polyurethane foam.  If you would like to discuss this process further, or arrange for a free estimate, call Ground Consolidation Services today at 678-337-8374.

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Topics: Slab Lifting, All Posts

Stabilizing Warped Slabs

GCS on Jul 24, 2019 1:53:46 PM

Stabilizing Warped Slabs

Blog Stabilizing Warped SlabsSometimes we get calls from property owners with slabs that are warped.  In this case, the entire slab is not sinking.  Instead, there is a depression in the middle of the slab - but the edges are still level with surrounding surfaces.  This is very often an indicator of a dangerous void underneath.  It happens often in warehouses and garages.  If you see a dip in the middle of a concrete slab on your property, you need to get it checked out immediately.

As we mention on our website:

Undetected voids are a silent threat that can cause slabs and structures to sink or collapse without warning.  Neglect can result in serious injury, litigation and even death.  GCS can protect your property and assets from these possibilities with the latest void detection and void repair technologies.

Please Note: While the depressed area in the center of the concrete is sometimes resistant to the lifting process due to the warped shape that the entire slab has taken, they can still be stabilized and protected from the risk of a dangerous collapse.

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Stabilizing Concrete Slabs to Prevent Customer Injury in Retail Stores

GCS on Jul 22, 2019 3:42:39 PM

Stabilizing Concrete Slabs to Prevent Customer Injury in Retail Stores

Stabilizing Concrete Slabs to Prevent Customer Injury in Retail Stores

As mentioned in our two-part blog series, Concrete Leveling to Prevent Trip Hazards and Litigation Risks

Concrete slabs sink for a variety of reasons.  The result is an eyesore and possibly a trip hazard that could - in a worst-case scenario - result in a serious injury, death, and/or a lawsuit.  Lifting slabs with polyurethane foam is safe, fast, and economical.

Property owners and managers should learn how to deal with these liability issues NOW with the latest concrete repair techniques and preventative measures.

If you own or manage a retail store, this warning should definitely be heeded.  The more customers there are walking around the property, the greater the liability.  A professional inspection of your property is an essential part of maintaining a safe shopping environment.  (Don't let tiles or other floor coverings fool you.  Most commercial floors have concrete slabs underneath.)

Ground Consolidation Services offers free site evaluations after a quick qualifying phone conversation.  Call 678-337-8374 to schedule your free site evaluation today!

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Topics: Slab Lifting, All Posts

Concrete Leveling to Limit Liability Risk in Office Complexes

GCS on Jul 19, 2019 2:10:12 PM

Concrete Leveling to Limit Liability Risk in Office Complexes

Concrete Leveling to Limit Liability Risk in Office ComplexesAs mentioned in our two-part blog series, Concrete Leveling to Prevent Trip Hazards and Litigation Risks

Concrete slabs sink for a variety of reasons.  The result is an eyesore and possibly a trip hazard that could - in a worst-case scenario - result in a serious injury, death, and/or a lawsuit.  Lifting slabs with polyurethane foam is safe, fast, and economical.

Property owners and managers should learn how to deal with these liability issues NOW with the latest concrete repair techniques and preventative measures.

If you own or manage an office complex, this warning should definitely be heeded.  The more employees there are walking around the property, the greater the liability.  A professional inspection of walkways, driveways, sidewalks, concrete parking lot slabs, and warehouse slabs is an essential part of maintaining a safe working environment.

Ground Consolidation Services offers free site evaluations after a quick qualifying phone conversation.  Call 678-337-8374 to schedule your free site evaluation today!

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Topics: Slab Lifting, All Posts

Deep Soil Stabilization in Metro Atlanta

GCS on Jul 17, 2019 2:31:53 PM

Deep Soil Stabilization in Metro Atlanta

Deep Soil Stabilization in Metro AtlantaUnstable soil often causes structural cracking, cave-ins, and sinkholes.  Fortunately, soil can be stabilized, and water infiltration stopped with polyurethane resins. Once the soil has been consolidated and strengthened, any slabs or structures resting on it can be leveled if needed.

Sometimes soil issues occur well below the surface.  If the problem is five feet deep or more, then deep soil stabilization is required.  GCS technicians detect the depth of soil issues with a soil probe during the standard site evaluation process.   Further investigation is available via soil testing probes and ground penetration radar.

The deep soil stabilization process consists of injecting high strength polyurethane resin through long sections of hydraulic tubing.  Injection starts from bottom and the technician injects more as the tubing is extracted, creating solid columns of soil stabilization resin.

This process is also known as pressure grouting.  See the illustrations below...

Stabilize-Soil---Permeation-vs-Compaction-Grout

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Topics: All Posts, Soil Stabilization, Pressure Grouting

Avoid the Voids!

GCS on Jul 12, 2019 4:02:40 PM

Banner Avoid the Voids!

Blog Avoid the Voids!We've posted a few articles so far on the subject of filling dangerous voids with polyurethane - and for good reason!  As we state on our website's Filling Voids page:

Undetected voids are a silent threat that can cause slabs and structures to sink or collapse without warning. Neglect can result in serious injury, litigation and even death.  GCS can protect your property and assets from these possibilities with the latest void detection and repair technologies.

Needless to say, this is serious business. Let's take a look at some essential information excerpted from void fill blog posts we've published so far.

Filling Voids with Polyurethane Foam in Atlanta

There are many areas in which soil voids in and around structures may present a danger to the building and/or the people inhabiting the space. Sometimes these voids aren't even noticed until damage has been done to the structure.  For example, a slab sinks after soil beneath it erodes away and forms a void.  Or a crack appears in a wall because the foundation is sinking due to voids in the soil that was once supporting it.  Pool decks can crack and large sections can sink due to voids appearing underneath.  This can cause a dangerous trip hazard for people using the pool.  Rocking slabs in a warehouse or factory floor can also be a sign of voids underneath. In all these cases, safety can be returned to the structures by filling the voids with high-strength polyurethane foam (and then lifting the slab or structure if needed).

Read more from the post, Filling Voids with Polyurethane Foam in Atlanta...

Filling Dangerous Voids Under Garage Slabs

Large gaps in the soil beneath the floor of your garage are a red-alert problem for variety of reasons:

  • Your garage floor is likely supporting a vehicle. We link to this video quite often, but it is very relevant here: click to view cars falling through a collapsing floor. You definitely do not want this happening in your garage.
  • Many people store valuable tools and equipment in their garage. How much did all your tools, your riding lawnmower, and all that other equipment cost you?
  • People are more valuable than any car or piece of equipment could ever be. Don't put your family and friends at risk.

Read more from the post, Filling Dangerous Voids Under Garage Slabs...

Excessive Rain Creates Dangerous Voids Under Slabs & Structures

Excessive rain can often lead to soil washout underneath slabs and structures.  The voids created by soil washout can lead to sinking or, in some cases, dangerous collapse of the slab or even the structure itself.

Properties with healthy and adequate drainage systems (French drains, catch basins, etc) are the least likely to be affected by heavy rainfall.  However, clogged drainage systems, improperly designed systems, or in the worst case - properties with NO drainage system, all pose a significant risk during periods of excessive rain. 

Read more from the post, Excessive Rain Creates Dangerous Voids Under Slabs & Structures...

Undetected Voids Can Lead to Catastrophic Slab Failure

See this photo? Take a close look.
 
Avoid-the-Voids-Catastrophic-Failure
 
You do not want this happening to your slab. Injury and litigation risks are a very real possibility for property owners who neglect inspection of the soil beneath their slabs. Even if your slabs are level, you may still want to get the soil underneath checked out. Unstable soil eventually causes structural cracking, cave-ins, and sinkholes. 
 
 

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Topics: All Posts, Void Fill

Eliminating the Guesswork from Polyurethane Concrete Leveling

GCS on Jul 10, 2019 11:07:09 AM

Eliminating the Guesswork from Polyurethane Concrete Leveling

Eliminating the Guesswork from Polyurethane Concrete LevelingPolyurethane concrete leveling can be an uncertain process, more art than science...for contractors who don't make the extra effort to eliminate as much of the guesswork as possible.  Who would you rather hire to lift or stabilize your slabs and structures - a mom & pop contractor who "goes by their gut" or a seasoned professional following tried and tested procedures?  In this post, we'll examine the many ways in which GCS professionals eliminate uncertainty from the process.

Scanning & Probing the Soil

A couple of things that set us apart from other slab lifting contractors are the soil imaging and testing services we offer. Why settle for guesswork about what's going on underneath your slab or structure when we can verify the facts for you before we do any lifting work (and show you the underground results AFTER we do the work)? Read more about GCS soil scanning and probing here.

Thoroughly Tested Procedures

When choosing a polyurethane foam slab lifting contractor, it’s important to make sure they have a thorough understanding of industry best practices. There are a great number of details to be aware of, but they’ve become second nature to us over time. Why? Because we care about your property and we train our crews accordingly. Our best practices of slab lifting cover all 3 sections of the process: Preparation, Lifting the Slab and Wrapping Up. Read all about GCS best practices here.

Only the Best Polyurethane

We're proud users of Alchemy-Spetec high-strength polyurethane for concrete leveling and soil stabilization. Alchemy-Spetec products are designed by people who’ve worked in the field for years and know how much property owners depend on durable repairs. Alchemy-Spetec is known throughout the industry as a leader on the product quality front. We could skimp and go with a cheap supplier, but then we'd be hearing back from you down the road when the product failed. We'd rather do it once and do it right. 

The Choice is Yours

There are plenty of concrete leveling contractors out there who...

  • Operate with very little awareness of what's going on underneath your slab/structure.
  • Don't bother to thoroughly train their crew.
  • Use cheap polyurethane that may or may not hold up over time.

While it takes more effort to avoid these pitfalls up front, we're happy to put in that effort because we know that less guesswork is better for all parties involved. 

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Topics: Slab Lifting, All Posts, Soil Stabilization