FP-01
Helical Pier Stabilization
Galvanized steel piers turned into load-bearing strata below the active frost zone. Torque-verified to refusal — usually 12 to 22 ft of penetration.
- Min Depth
- 60″
- Capacity
- 55 kip
File · Frost Atlas / AnchorageWhy piers don't move
One year of ground temperature. Scroll through it.
Anchorage ground freezes from October. By March the frost line sits near 42″. A shallow footing rides that frost up and back down — your house tilts. A helical pier driven below the frost stays in unfrozen soil all twelve months.
Peak frost reach
42″ March
The frost line in the Anchorage Bowl. Footings shallower than this lift, freeze-bond to soil, and pull the structure with them.
Our minimum
60″ to refusal
Helical piers are driven until torque refusal — typically 12 to 22 ft. Below frost, in unfrozen, load-bearing soil.
Annual movement
≈ 0 in
What the chart proves: once the load-path lands below 60″, the seasonal cycle stops moving the structure.
02 · Field Capability
Six disciplines. One load path that doesn't move.
Every Arctic Terra job starts with a torque log and ends below the frost line. Cold-rated steel, engineered drainage, and a verified load path — no shortcuts in the active zone.
SJ-02
Polyurethane Slabjacking
High-density foam injected beneath settled slabs. Cures in minutes, lifts garage pads, sidewalks, and driveway aprons back to grade.
- Cure Time
- 15 min
- Reach
- 120″ span
CW-03
Crack Injection & Wall Reinforcement
Epoxy and polyurethane injection for hairline through 1″ wall cracks. Carbon-fiber straps for bowed basement walls — pulled back plumb in stages.
- Tension
- 20 kip
- Warranty
- Lifetime
FD-04
Frost-Line Drainage Engineering
Perimeter French drains, sub-slab membrane, and rigid foam frost-skirts. Stops the freeze-thaw cycle from saturating the load-bearing soil.
- Skirt Width
- 48″
- R-Value
- R-10
PF-05
Permafrost Foundation Engineering
Thermosyphons and engineered fill for sites with discontinuous permafrost. Keeps the active layer stable through the summer thaw season.
- Active Layer
- 0–8 ft
- ΔT Control
- ±2°F
LV-06
Structural Leveling & Re-Shim
Hydraulic jacking, shim packs, and post adjustment under crawlspace beams. We level back to within 1/4″ across the entire footprint.
- Tolerance
- 1/4″
- Lift Rate
- 1″ / day
03 · Field Reports8 of last 14 · 2025–26
Recent jobs, logged. Every pier torque-verified.
Anchorage Bowl, Eagle River, Mat-Su Valley. Below each photo: the file number, location, technique, and the measured result.
Hillside · AnchorageFeb 14 2026
Helical Pier · 8 units
Cracked stem wall on a 1978 split-level. 8 piers driven to refusal at 16 ft.
16 ftPier Depth
Eagle RiverJan 22 2026
Slabjacking · Garage Pad
Garage pad had settled 1.3 in toward apron. Polyurethane lift back to grade.
1.3 inLift
Wasilla · Lake LucilleNov 03 2025
Crack Injection · 12 LF
Hairline horizontal crack across basement wall. Two-stage polyurethane injection.
12 LFLength
Palmer · ButteSep 12 2025
Permafrost Survey
New build siting. Thermal probe survey at six depths, 24 ft footprint.
6 / 24 ftProbes
Anchorage · SpenardAug 04 2025
Wall Reinforcement
Carbon-fiber straps on bowed west wall. Wall pulled back 0.6 in to plumb.
0.6 inPlumb Reset
ChugiakJul 18 2025
Structural Leveling
Crawlspace post packs and shim plates. Floor leveled to 1/4 in tolerance.
1/4 inTolerance
Mat-Su · Big LakeJun 09 2025
Frost-Skirt Install
R-10 rigid foam frost-skirt around perimeter. 48-in width, 5-ft trench.
48 inSkirt
Anchorage · Sand LakeMay 22 2025
Helical Pier · 4 units
Detached deck pulling away from house. 4 piers, retaining bracket retrofit.
14 ftPier Depth
04 · Standard of Work
“We'd rather hand you a torque log than a sales pitch.”
Founder's Standard · Arctic Terra
We're a young shop. Instead of asking you to trust the star count, we hand you the data: a stamped engineering report, every pier's torque-to-depth log, photos of the bearing strata, and a measured plumb reset for every wall we touch.
If those numbers don't pencil — we don't bill the job. That's the only review we plan to live or die by.
05 · Discipline Stack
We don't list everything we've heard of. Only what we actually use.
Six methodologies that touch every Arctic Terra job — from the soil probe through the final torque log and stamped report.
- L&ILicensed & Insured · AlaskaGeneral liability and workers' comp current. Certificate on request.
- ICC-ESHelical Pier InstallerTrained to ICC-ES AC358 evaluation criteria — torque-to-capacity logged on every pier.
- ACIConcrete Field-Testing AwareSlump, air, and cylinder protocol per ACI for any new pour we place.
- ASTMASTM D1586 Soil ProbingHand-auger refusal and probe-log methodology before we engineer a load path.
- AKCold-Region SpecificPermafrost-aware practice. Thermosyphon and frost-skirt design where the site demands it.
- REPORTStamped Engineering ReportsStructural assessments stamped by a licensed Alaska PE for jobs that require it.
06 · Coverage AtlasBase · S. Anchorage 99515
Four zones. One frost line per zone.
Frost-depth and soil class shift quickly between the Bowl, the Knik Arm, and the Valley. We engineer each job to its zone, not to a default spec.
- ZONE 0138–42″Anchorage BowlMixed glacial till and silt. Standard pier depth.
- ZONE 0242–46″Eagle River · ChugiakElevation gain, freezing degree-days run higher.
- ZONE 0346–52″Mat-Su · Wasilla · PalmerCold-air drainage in valley floor. Permafrost-aware zoning.
- ZONE 0450–58″Big Lake · HoustonSites with discontinuous permafrost; survey first.
07 · Dispatch Intake
Pipes still standing. House isn't.
If you've found a fresh crack, a sticking door, or your floor went out of level this winter — call the line. We dispatch even at −10°F.
(907) 222-7599Office
331 E 87th Ave
Anchorage, AK 99515
Hours
Mon–Sat · 7a – 7p
Emergency · 24/7