Complex Foundation Repairs
A newly developed neighborhood was built on 12 feet to 35 feet of fill material. Over the course of the first few years homeowners experienced differential foundation settlem…
Read the projectCase studies
Real problems assessed. Repairs documented.
See how Polyflow diagnosed the problem, chose the repair, and brought each project back to a durable result.
Residential Compaction Testing with a Handheld Probe
Many concrete leveling quotes are based on a quick visual inspection, a few measurements, and assumptions about the cause. In reality, settlement can be driven by deep soil i…
Read the projectFlowable Grout vs High Density Structural Foam
In foundation lifting projects using helical or push piers, a void often remains between the footing and the ground after elevation is restored. If that gap is not properly f…
Read the projectCascade Library Slab on Grade Void Fill
The pharmacy in Cascade caught fire and when the fire department came to put it out water ran from the pharmacy downhill under the library causing a void under the concrete s…
Read the projectApartment and Business Complex Risk Assessment
Complexes often have sidewalks or walkways through out the property. Trip and slip hazards can not only be a risk for potential lawsuits but also higher insurance premiums. I…
Read the projectFoundation Crawl Space and Basement Crack Seal
Most stem walls/foundations or basements have cracks in them. You don't always need to be concerned with the cracks but if water is penetrating through them it can cause mold…
Read the project2 Story Back Patio
This is a new construction house built next to the green belt near the Boise River. The house needed to be built above the flood plane, so the contractor built a retaining wa…
Read the projectWashout void fill
An HOA was losing large amounts of water under and around the weir. The condition of the concrete was sound but the surrounding fill was washed out.
Read the projectBoise COOP Single Component Shoring
The Boise Coop needed a new tank installed in the parking lot. The parking lot has limited space and normally the excavation company would dig a very large hole so they can f…
Read the projectSidewalk Case Study Compilation
Normal Sidewalk Settling Causes: The number one cause for sidewalks to settle in our area are rain gutters being installed on the high side of the sidewalk. As rain drains on…
Read the projectApartment Pillar Lift
These apartments have a common covered front porch that is supported by structural 4×4 wooden posts, which are surrounded by a decorative siding. Each individual post sits on…
Read the projectLack of Compaction New Construction Front Porch
Two projects—one in Eagle and one in Downtown Boise—had the same deep-soil issue after excavation contractors backfilled against new foundations without compacting in lifts.…
Read the projectFixing a Sink Hole in a Parking Lot
There were a few small surface holes in the asphalt in a parking lot. Upon further inspection we found that some of the holes were up to 21 feet deep. The area was closed off…
Read the projectApartment Foundation Repair
This project involved a three-story apartment complex. During the initial excavation phase of the construction process the compaction inspection was overlooked. The construct…
Read the projectShop Foundation Reinforcement
The 90'W × 120'L × 18'H shop sits on an old horse arena at approximately 4,300 feet in a high-snowfall area. Its foundation footing is 24 inches wide by 24 inches deep. The o…
Read the projectTransfer Station Concrete Lift and Deep Soil Stabilization
The transfer station is a place that rural dump trucks take the waste and dump it into an open concrete area then from that open area it gets pushed into trucks that transfer…
Read the projectGarage Floor and 6" Driveway Lift
Both the garage floor as well as the driveway settled more than 6 inches causing an extreme trip hazard and a major inconvenience for access into the garage. Not only did the…
Read the projectRetaining Wall Foundation
The homeowner built a retaining wall on the edge of their patio for privacy but the weight of the retaining wall caused the patio to settle on the outside and it caused the s…
Read the projectFront Porch Pillars
During the initial concrete foundation construction phase the concrete contractor installed the sub-grade support piers 3 feet below the level they should have been installed…
Read the projectSink Front Yard
The homeowners front yard and front porch began to show holes and visual signs of settling and movement from their original finished grades and heights. During our initial on…
Read the projectShed Soil Stabilization
On this mountainous property, a 16W × 32L shed was backfilled around large cement barrier blocks with native soil containing organic and other deleterious material; it was no…
Read the projectCommon Joint Sealant
During wet weather water flows down driveways and sidewalks and into the control joints and under the concrete causing erosion leading to settlement of the concrete panels an…
Read the projectErosion Around a Concrete Dam
A homeowner built a concrete dam in a creek to create a pond for irrigation storage. During backfill, boulders and road mix were placed around the structure. Once the pond fi…
Read the projectGrain Silo Waterproofing
Cracks at the base of grain bins were allowing water to enter the silo, causing grain rot and financial loss. Previous attempts using surface sealants and even spray foam coa…
Read the projectCistron Water Leak Repair
This site presented two related issues. Water was leaking around the main pipe entering the cistern, escaping through concrete at the penetration. Over time, the leak caused…
Read the projectDeep Injection Storage Units
Even with strong geotechnical planning, localized conditions can vary outside test areas. At this site, certain zones showed settlement in asphalt drive lanes and near storag…
Read the projectVoid Fill Under Shop Floor
Improper drainage and insufficient compaction caused erosion beneath a shop floor, creating voids in the sub-base. The underlying soils were also not ideal load-bearing mater…
Read the projectFoundation Repair Using Adjustable Jack System
This older home had a stem wall that was crumbling due to age and deterioration, leading to settlement at one corner. The homeowner wanted a practical solution that improved…
Read the projectLarge and Heavy Front Porch
This is a common issue on new construction with basement foundations. After forming and pouring the basement walls, excavation spoils are backfilled against the foundation. I…
Read the projectBoise Parks Bridge Abutment
After the bridge abutment excavation, compacted road mix dried out and developed cracks and fissures. The rebar structure had already been built on top of the fill before the…
Read the projectFoundation Repair
A newly constructed home settled about one inch at the front within a couple of years, leading to drywall cracking and doors that would not open or close properly. During the…
Read the projectChemical Shoring Basement Build
During a renovation and addition project, excavation soils were not holding shape and were sloughing into the dig. Unstable excavation walls create serious safety risks for c…
Read the projectDeep Injection and Pool Stabilization
This highly engineered, concrete-heavy home was built on a section of properly compacted road mix and supported by large, deep columns. Despite robust construction, early sig…
Read the projectLeveling a House and Deck With Crawl Jacks
This home was built with a post-and-beam system, including a support post that was literally a tree. Over time, natural decomposition and erosion reduced the post's capacity,…
Read the projectHeavy Front Porch Lift
During a remodel, a basement was added beneath an existing home. To create the basement footprint, the soils around the house were excavated and later backfilled without bein…
Read the project