Twining, Inc.
Twining, Inc. is a California-based, family-owned engineering services firm providing construction materials testing, geotechnical engineering, and inspection services to public agencies and private developers across California, founded in 1898.
- Company typePrivate
- Founded1898
- HeadquartersLong Beach, United States
- Headcount251–500
- GTM typeB2B
- OfferingServices
What Twining, Inc. does
Twining, Inc. is a privately held, family-owned engineering services firm founded in 1898 in Fresno, California, and currently headquartered in the Long Beach/Los Angeles area. The company provides construction materials testing, geotechnical engineering, and inspection services to public agencies, private developers, healthcare systems, educational institutions, and construction firms across California. Service lines span five categories: Engineering (geotechnical, vibration and geo-instrumentation, concrete engineering and research, forensics), Materials Testing (concrete, asphalt, low-carbon concrete, third-party product testing), Inspections (special inspection, public works, stormwater, balcony bill, QA/QC management), Modular/Industrialized Buildings, and the Concrete Insights specialty suite (petrographic examination, service life modeling, mass concrete thermal control, carbon-neutral concrete support).
The company's technical platform rests on certified laboratories accredited by USACE, Caltrans, DSA, HCAi, LADBS, AASHTO, and IAS, supported by advanced nondestructive evaluation equipment (ground-penetrating radar, impact echo, ultrasound, shear wave tomography) and proprietary capabilities including a nation-first mobile laboratory for Rapid Strength Concrete validation (introduced 1998) and the first West Coast laboratory for steel fiber-reinforced concrete and shotcrete testing. Twining operates an enterprise B2B go-to-market, selling services through RFP/proposal processes with project-based, quote-driven pricing; it deploys 150+ field inspectors across California (80%+ holding multiple certifications) under a 40+ year agreement with the International Union of Operating Engineers (Local 12, expanded to Local 3 in 2020). Cumulative contract milestones cited include $80M+ in energy project services since 2015, $100M+ with California public agencies, $1B+ in California private development, 2,000+ healthcare projects, 75,000+ public works projects, and 10,000+ clients served.
Twining, Inc. firmographics
Firmographics- Name
- Twining, Inc.
- Legal name
- Twining Inc.
- Website
- https://twininginc.com
- Company type
- Private
- Founded year
- 1898
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Twining, Inc. is a California-based, family-owned engineering services firm providing construction materials testing, geotechnical engineering, and inspection services to public agencies and private developers across California, founded in 1898.
- Ownership category
- akta.pro rank
Twining, Inc. industry classification
Industry- Product category
- Construction Materials Testing & Geotechnical Engineering
- NAICS
- Testing Laboratories and Services (54138), Building Inspection Services (541350)
- SIC
- Services-Testing Laboratories (8734)
- akta.pro primary industry
- Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL)
Keywords
Where Twining, Inc. is headquartered
LocationHeadquarters
- HQ city
- Long Beach
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Twining, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Professional Engineering Services: Fee-for-service professional services model providing construction material testing, geotechnical engineering, inspection, and quality assurance services to government agencies, private developers, and construction companies across California.
- Special Inspection Services: Special inspection services covering structural steel, concrete, masonry, roofing, waterproofing, fire stopping, shotcrete, and drilled-in anchors for construction projects.
- Laboratory Testing Services: Materials testing laboratory services for concrete, asphalt, aggregates, cement, chemical admixtures, and specialized testing including petrographic examination and nondestructive evaluation.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based professional services pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
Twining, Inc. product offering
Product offeringCore offering
Twining provides construction materials testing, geotechnical engineering, and special inspection services for public infrastructure and private development projects across California. Its offerings span soil and foundation analysis, concrete and asphalt laboratory testing, structural inspection, nondestructive evaluation, and forensic analysis, supported by certified laboratories and field-deployed inspectors. The firm also delivers specialized services including QA/QC management, balcony safety inspections (CP1481), stormwater compliance, and industrialized (modular) building review.
Product overview
Twining, Inc. is a full-service engineering company providing construction material testing and geotechnical engineering services. The company operates as a multi-disciplinary service organization organized around five core service categories: Engineering (geotechnical engineering, vibration monitoring, concrete engineering, forensics), Materials Testing (laboratories, concrete testing, asphalt testing, third-party product testing, low carbon concrete testing), Inspections (special inspection, public works inspection, stormwater inspection, balcony bill inspections, QA/QC management), Modular (industrialized buildings, quality system auditing), and Concrete Insights (a comprehensive specialty suite including petrographic examination, service life modeling, and support for carbon-neutral concrete solutions). The company has provided over $80 million in energy project services since 2015 and has operated for over 125 years serving California.
Differentiator
Problem solved
Functional benefit
Brands
- Twining Concrete Insights: Specialized concrete-focused division providing material engineering, laboratory testing, building technology consulting, structures and pavement evaluation, and forensic, petrographic, and analytical services. Active for seventy years.
- Twining Apparel
Products and services
- Geotechnical Engineering Engineering services related to the ground, including soil testing, slope stability analysis, and foundation design for the safety of structures and infrastructure.
- Vibration and Geo-Instrumentation Monitoring of vibration and other geotechnical parameters to assess the impact of construction activities and ensure the safety of structures and infrastructure through pre and post-construction surveys.
- Concrete Engineering and Research Developing concrete mixtures to enhance performance and constructability, including laboratory trial batches, mix design optimization, and performance evaluation.
- Forensics Troubleshooting, condition evaluation, and forensic services for concrete structures and pavements, including determination of material-related distress mechanisms and dispute resolution support.
- Special Inspection Non-destructive examination involving different disciplines such as structural steel, masonry, roofing and waterproofing, fire stopping, welding, and concrete inspection.
- Public Works Inspection Planning, monitoring, and auditing services to ensure that public infrastructure projects are completed on time, within budget, and to required standards.
- Stormwater Inspection Environmental compliance services preventing pollution and ensuring construction activities do not harm local water bodies, including site monitoring, erosion control, and discharge sampling.
- Balcony Bill Inspections Inspection services for exterior elevated elements (E3s) including structural integrity assessments and safety audits to comply with CP1481 requirements.
- Quality Assurance Management / Quality Control Management Providing experienced QC Managers to fill skill gaps and workforce needs on publicly funded projects, ensuring projects are built according to plans and specifications.
- Materials Testing Laboratories Full-service construction material testing laboratories providing accurate results and data crucial for selecting the right materials and ensuring the durability of construction projects.
- Concrete Testing Non-destructive testing of concrete to assess quality and condition using concrete petrography and other analytical methods including compressive strength, flexural strength, and modulus of elasticity testing.
- Asphalt Testing Laboratory testing services crucial for the durability and safety of roads and pavements, ensuring they withstand the test of time and provide a smooth, reliable surface.
- Third-Party Product Testing Lab Independent testing and inspection of materials and products to ensure they meet required standards and specifications.
- Low Carbon Concrete Testing Material evaluation and certification services for low-carbon concrete, supporting carbon-neutral concrete and novel cement solutions.
- Industrialized Buildings Review and inspection of modular buildings to improve quality and safety, supporting the growing modular construction industry.
- Quality System Auditing & Listing Auditing and listing of quality management systems for consistency and documentation of compliance with applicable code bodies and standards.
- Concrete Insights Comprehensive suite of specialty services for the concrete-built environment including material engineering, laboratory testing, building technology consulting, structures evaluation, and forensic and petrographic services.
Quantifiable outcome
- $80 million in energy project services since 2015
- +5 more outcomes
Companies that use Twining, Inc.
Customer profileNamed customers12 records
Segments7 records
Ideal customer profiles6 records
Twining, Inc. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Twining, Inc. partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core.
- US Army Corps of EngineerscoreTwining's laboratories are certified, accredited, and/or inspected by the US Army Corps of Engineers for construction materials testing and inspection services.
- CaltranscoreCertified laboratory and inspection services compliant with Caltrans quality assurance requirements for transportation infrastructure projects.
- Division of the State Architect (DSA)coreQualified provider of inspection and testing services for DSA-regulated educational facility construction projects in California.
- Department of Health Care Access and Information (HCAi)coreApproved inspection and engineering services provider for healthcare facility construction meeting HCAi requirements.
- International Union of Operating Engineers, Local 12coreOver 40-year agreement with the union; partnership expanded statewide in 2020 to include Local 3. Twining is a signatory employer providing prevailing wage employment to inspectors and technicians.
- AASHTOcoreLaboratory accreditation and testing services compliant with American Association of State Highway and Transportation Officials standards.
- LADBS (Los Angeles Department of Building and Safety)coreAccredited inspection and testing services for Los Angeles city construction projects requiring LADBS oversight.
- IAS (International Accreditation Service)coreInspection agency accreditation for special inspection services and materials testing laboratories.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
Twining, Inc. competitors and assessment
Company assessmentDirect peers
- Kleinfelder: National engineering, construction materials testing, and geotechnical firm with a strong California presence offering virtually the same service mix (geotechnical, materials testing, special inspection) and competing directly with Twining on public agency and private developer RFPs.
- Terracon: One of the largest U.S. TICx and geotechnical engineering consultancies, providing materials testing, special inspection, environmental, and facilities services comparable to Twining's offerings across multiple end markets including transportation and public infrastructure.
- RMA Group: California-based geotechnical engineering and construction materials testing firm headquartered in Southern California, directly competing with Twining in the state's TICx market for public works, transportation, healthcare, and private development projects.
- NV5 Global: Public technical engineering and consulting firm with infrastructure, environmental, and TICx capabilities; competes with Twining in California materials testing, special inspection, and geotechnical work, and has expanded via M&A to broaden geographic scope.
- CTI Consultants (an Atlas company): Specialty TICx consulting firm focused on construction materials testing and special inspections in California, providing near-identical services to Twining for public agency and private developer clients across the state.
Regional players
- Earth Systems Pacific: California- and West Coast-focused geotechnical engineering and materials testing firm offering similar geotechnical and construction testing services to Twining, competing primarily within the same regional construction market.
Broad incumbents
- AECOM: Global engineering and infrastructure services firm with a large construction services practice that includes materials testing, special inspection, and geotechnical engineering, competing with Twining for major California public and private construction projects.
- WSP: Global professional services firm with a sizable Earth & Environment and property & buildings practice offering geotechnical and construction materials testing services, overlapping with Twining in California transportation, healthcare, and education verticals.
- Tetra Tech: Global consulting and engineering firm whose water, environment, and infrastructure practices include construction materials testing and geotechnical capabilities, comparable to Twining's public works, energy, and infrastructure work in California.
- Stantec: Global engineering firm with environmental services, geotechnical, and construction support offerings that overlap with Twining's geotechnical, materials testing, and inspection services across California infrastructure, water, and building projects.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Twining, Inc. social profiles
Digital presenceTwining, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Twining, Inc. leadership team
Management profileNumber of profiles
Profiles1 record
Twining, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Twining, Inc. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Twining, Inc.
What does Twining, Inc. do?
Twining provides construction materials testing, geotechnical engineering, and special inspection services for public infrastructure and private development projects across California. Its offerings span soil and foundation analysis, concrete and asphalt laboratory testing, structural inspection, nondestructive evaluation, and forensic analysis, supported by certified laboratories and field-deployed inspectors. The firm also delivers specialized services including QA/QC management, balcony safety inspections (CP1481), stormwater compliance, and industrialized (modular) building review.
Is Twining, Inc. a public or private company?
Twining, Inc. is a private company. It is classified as family owned and is currently operating.
When was Twining, Inc. founded?
Twining, Inc. was founded in 1898. It employs 251 to 500 people.
Where is Twining, Inc. based?
Twining, Inc. is headquartered in Long Beach, United States, in the North America region.
How does Twining, Inc. make money?
Three revenue lines are on record. Professional Engineering Services are the primary driver. The others are special Inspection Services and laboratory Testing Services.
Who are Twining, Inc.'s main competitors?
Direct peers on record are Kleinfelder, Terracon, RMA Group, NV5 Global and CTI Consultants (an Atlas company). Earth Systems Pacific is listed as a regional player. Broad incumbents are AECOM, WSP, Tetra Tech and Stantec.
Does Twining, Inc. have an API?
No public API is recorded for Twining, Inc..
What industry is Twining, Inc. in?
Twining, Inc.'s product category is Construction Materials Testing & Geotechnical Engineering. Its primary akta.pro industry code is BPAHAIAL, Testing, Inspection, Certification & Commissioning (TICx) Technical Services. Its NAICS code is 54138 and its SIC code is 8734.