UnlimitedDrilling.wikiA sourced record of Unlimited Drilling & Foundations and hillside work in San Diego County

Glossary

From UnlimitedDrilling.wiki, a sourced record of Unlimited Drilling & Foundations Inc and of foundation, caisson and retaining-wall work in San Diego County

Researched and compiled by the Unlimited Drilling Wiki editorial team · First published · Revised

At a glance: This glossary defines the technical and licensing words used in the Unlimited Drilling & Foundations articles, with citations where a definition depends on a company or CSLB source.

Independence note: UnlimitedDrilling.wiki is an independent record compiled from the Contractors State License Board, Google Business Profile data, and the company’s own pages. It is not the official website of Unlimited Drilling & Foundations Inc. Figures the company publishes about project counts, methods or schedules are attributed to the company. Hours, addresses and license status can change; confirm them with the company at (619) 871-7880 and verify the license at the Contractors State License Board. This is general information, not engineering, legal or construction advice. See the editorial standards.

Terms used in this reference

  • Caisson (drilled). A deep, usually concrete-filled foundation element, often reinforced, used to carry load or to resist lateral forces. The company publishes diameter, depth and access limits for its own equipment; design values come from an engineer.[1][2]
  • Class A. California contractor classification for general engineering contractors.[3]
  • Class B. California contractor classification for general building contractors.[4]
  • Contractor’s bond. A licensing bond filed with CSLB. On this license, $25,000 with American Contractors Indemnity Company as of the 9 November 2026 snapshot. It is not automatically a job-completion bond.[5][6]
  • Epoxy injection. A method of bonding a crack in concrete. The company has written that it does not, by itself, address problems outside the immediate crack.[7]
  • French drain. A subsurface drain, typically a perforated pipe in a gravel trench, used to collect and redirect groundwater.[8]
  • Grade beam. A reinforced concrete beam that transmits loads to piles, caissons or footings, often used in foundation repair or new hillside work.
  • Helical pier / push pier. Steel foundation elements installed by rotation (helical) or hydraulic pushing (push). The company lists installation equipment for both.[9]
  • Limited access. A site whose gates, side yards or slopes will not accept a full-size rig. The company emphasizes 36-inch access for some machines.[9]
  • Qualifying individual. The person CSLB holds as the examiner-qualified principal on a license. Here, Howard Joseph Azar.[5]
  • Retaining wall. A structure that holds soil. Design depends on height, surcharge, soils and drainage.[10]
  • Swale. A shallow channel that carries surface water. The company mentions concrete swales.[8]
  • Spoils. Soil and debris removed from a drilled hole or an excavation. The company lists a dump trailer among its resources for hauling them.[9]
  • Tie-back. An anchored element, often a drilled and grouted or mechanically anchored rod, used to resist lateral loads in a wall or a slope. The company lists tie-back installation equipment.[9]
  • Workers’ compensation (as listed). The 9 November 2026 CSLB snapshot shows State Fund policy 1429467, effective 1 November 2014 through 1 November 2027. A current certificate, not this snapshot, is what an owner should request.[5]
  • Reissue to another entity. CSLB records a reissue of this license on 25 January 2012 with the note “TO ANOTHER ENTITY.” The Board does not, on the detail page reviewed, narrate the corporate history behind that note.[5]

Definitions are written for this wiki. Where a definition rests on a company or CSLB claim, the citation follows the entry. Terms without a citation are general construction vocabulary used in the surrounding articles.

Questions readers ask

Is this a legal glossary?

No. Classification and bond definitions should be checked against CSLB’s own pages.

Why are some terms unsourced?

They are ordinary engineering words used to explain sourced claims, not new facts about the company.

Will this list grow?

Yes, if later revisions add methods the company newly documents.

Related articles

Notes and sources

  1. ^ Best Foundation Repair San Diego (home page). Unlimited Drilling & Foundations (unlimiteddrilling.com). Retrieved 9 November 2026.
  2. ^ Caisson drilling pages (company service descriptions). Unlimited Drilling & Foundations (unlimiteddrilling.com). Retrieved 9 November 2026.
  3. ^ A – General Engineering Contractor classification. Contractors State License Board. Retrieved 9 November 2026.
  4. ^ B – General Building Contractor classification. Contractors State License Board. Retrieved 9 November 2026.
  5. ^ a b c d Contractor’s License Detail for License # 682396. Contractors State License Board. Retrieved 9 November 2026.
  6. ^ Bonds and Insurance. Contractors State License Board. Retrieved 9 November 2026.
  7. ^ How Much Does Foundation Repair Cost. Unlimited Drilling & Foundations (unlimiteddrilling.com). Retrieved 9 November 2026.
  8. ^ a b Drainage. Unlimited Drilling & Foundations (unlimiteddrilling.com). Retrieved 9 November 2026.
  9. ^ a b c d Equipment and Resources. Unlimited Drilling & Foundations (unlimiteddrilling.com). Retrieved 9 November 2026.
  10. ^ Retaining Walls. Unlimited Drilling & Foundations (unlimiteddrilling.com). Retrieved 9 November 2026.