Introduction to Pipeline Design and QA/QC Standards at Hinterland Group

Hinterland Group provides water, sewer, and stormwater pipeline solutions across the southeastern United States with a focus on design excellence and robust QA/QC (Quality Assurance/Quality Control) standards. The company specializes in trenchless pipeline technologies—such as CIPP (Cured-In-Place Pipe)—serving both gravity and force main systems, and ensures compliance with national specification standards like ASTM F1216, alongside comprehensive material testing and acceptance procedures. Learn More About Hinterland Group

ASTM F1216: Core Standard for CIPP Pipeline Rehabilitation

ASTM F1216 (Standard Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated Tube) is the industry benchmark for CIPP trenchless pipeline rehabilitation. It provides requirements for:

Material composition (fabric tube and resin systems)
Installation and inversion techniques
Curing methods (hot water/steam/UV)
Structural design calculations
Testing for both field and laboratory contexts
Performance criteria such as watertightness and long-term durability
Final acceptance criteria, including thickness, diameter, and strength verification

Facilities adhering to ASTM F1216 certify that the installed CIPP liner provides a structurally sound, watertight, and chemically resistant solution extending the pipeline’s service life by decades. ASTM F1216 Document Reference: ASTM International

Gravity vs. Force Main: Design and QA/QC Considerations

Gravity Sewers

Design Objective: Rely on gravity to convey flow; maintain self-cleansing velocities.
Liner Structural Design: Must address soil, ground water, and live load. Typically designed as a fully or partially deteriorated host pipe.
Hydraulic Profile: Liner thickness and smoothness must not negatively impact hydraulic capacity.
Testing: Air or water leakage testing is standard to ensure watertightness. CCTV inspection is used for acceptance.
Service Reinstatement: All laterals/connections must be accurately located, cut, and sealed.

Force Mains

Design Objective: Use pressurization to transport liquid; must withstand cyclic pressures and potential surges.
Liner Structural Design: Must be rated for internal pressure and designed considering transient effects (e.g., water hammer).
Hydraulic Profile: High quality, smooth-surfaced liners help reduce friction losses under pressure.
Testing: Hydrostatic pressure testing is required. Additional consideration to liner’s bond and resistance to delamination under pressure conditions.
Service Reinstatement: Penetrations must be sealed to prevent pressure leakage.
QA/QC: May require additional burst testing and continuous pressure monitoring during commissioning.

Attribute	Gravity Sewer (ASTM F1216)	Force Main (ASTM F1216 + Supplement)
Typical Failure	Structural collapse, infiltration	Internal pressure, exfiltration, surging
Testing	Air/water tightness, CCTV, thickness	Hydrostatic/pressure, CCTV, thickness
Service Cuts	Basic (gravity lateral)	Pressure-class penetrations
Liner Selection	Fully/partially deteriorated host	Pressure rating (Class-tested)
Acceptance	As per ASTM F1216, hydrostatic leakage for some	Enhanced: Pressure-hold, ASTM F1216 plus more

Material Testing and Acceptance at Hinterland Group

Hinterland Group’s QA/QC program for trenchless rehabilitation and pipeline construction incorporates multi-tiered testing protocols:

Laboratory Coupon Testing

Test sections (coupons) are removed from installed liners (as per ASTM F1216) for:
Wall thickness (micrometer or calipers)
Flexural modulus and strength (per ASTM D790)
Tensile strength (per ASTM D638)
Visual inspection for proper curing, absence of cracks or voids
All results are compared to both project specs and ASTM minimums.

Field Testing and Inspection

CCTV Inspection: Used for all projects to verify liner placement, lateral reinstatement, and identify irregularities.
Leakage Testing:
Gravity: Air or water leakage testing per ASTM F1417 or F1216
Force main: Hydrostatic leakage/pressure testing (project-specific)
Thickness Measurement: Direct sampling or non-destructive ultrasonic techniques
Bond Check (when required): Ensuring liner adhesion to host

Quality Control Documentation

All measurements, observations, and test results are logged and submitted to the owner/engineer for review prior to acceptance, in accordance with project specifications and ASTM requirements.

Hinterland Group’s PRIME Approach to QA/QC

Hinterland’s service delivery incorporates the company’s proprietary PRIME quality system, which stands for:

Pipeline Rehabilitation Services: CIPP, pipe bursting, geopolymer/SIPP, sliplining Pipeline Rehabilitation
Repair and Replacement Services: Lift station, gravity main, and service lateral focus, including tremie wet wells and in-house bypass Repair and Replacement
Inspection Services: Comprehensive pre- and post-installation inspection with high-resolution CCTV and data analytics Inspection
Maintenance Services: Proactive system cleaning, inspection, and minor repair to maximize asset life Maintenance
Evaluation and Assessment Services: System performance assessment, risk ranking, and optimization Evaluation and Assessment

All QA/QC procedures are tailored to project needs, local utility standards, and relevant ASTM/AWWA/municipal requirements.

Benefits and Features of Rigorous QA/QC Standards

Extended Service Life: Conformance to ASTM F1216 and related standards maximizes longevity of rehabilitated assets.
Regulatory Compliance: Meets or exceeds municipal, state, and federal infrastructure acceptance criteria.
Risk Mitigation: Reduces chance of premature asset failure or costly re-work
Transparency and Traceability: All lab and field results are systematically logged, reported, and auditable.
End-User Protection: Utilities and property owners gain documented confidence in infrastructure performance.

Typical Use Cases and Project Types

Municipal Sewer Rehabilitation: Gravity/Sanitary force mains in urban areas.
Industrial Pressure Mains: Industrial force main rehabilitation with full pressure testing for manufacturing and logistics facilities.
Commercial/Retail Sites: Sewer service restoration with minimal disruption via trenchless repairs.
Stormwater Culverts: Large-diameter stormwater asset renewal with demanding QA/QC profiles.

For project case studies see: Hinterland Group Case Studies

Frequently Asked Questions (FAQ)

Q: Does Hinterland Group install CIPP to ASTM F1216 on all jobs?

A: Yes. Hinterland Group’s CIPP installations are designed and tested to meet or exceed all relevant portions of ASTM F1216, including lab coupon testing, field inspections, and QA/QC documentation. Force main and pressurized sewer projects also incorporate additional acceptance standards as specified.

Q: How do gravity and force main lining projects differ in QA/QC?

A: Gravity projects primarily require leakage/air testing and structural evaluation per ASTM F1216. Force main applications require enhanced material selection, pressure resistance design, hydrostatic testing, and evaluation of liner penetration seals or connections for pressure integrity.

Q: What third-party testing is used for acceptance?

A: ASTM F1216 requires laboratory flexural and tensile testing on field samples for every CIPP installation (location/project-specific). Hydrostatic leakage tests may be confirmed by independent third-party inspectors when required by project documents or utility owner.

Q: How is liner thickness and strength verified?

A: Extracted coupons are measured for wall thickness (micrometer), and flexural/tensile modulus are tested per ASTM specs—acceptance is contingent upon meeting or exceeding design and specification minimums.

Q: Does Hinterland Group offer QA/QC for both mainlines and service laterals?

A: Yes. All mainline, lateral, and manhole rehabilitation solutions employ project-specific QA/QC procedures reflecting both ASTM standards and additional owner/utility requirements. Manhole rehabilitation is supported by visual/physical inspection, leak testing, and material sampling as needed.

Q: Are there circumstances where alternative standards are used instead of ASTM F1216?

A: ASTM F1216 is the basis for most gravity/pressure sewer lining in the U.S.; supplementary standards (e.g., ASTM F1743 for SIPP/geopolymer spray) or local government/engineering specifications may apply based on project scope and method.

Q: How are materials tracked for traceability?

A: All liner materials are tracked from factory delivery, through wet-out, through installation, and via post-installation coupon testing. Documentation is provided at project closeout for owner/engineer record-keeping.

Q: What best practices are followed for reducing risk during rehabilitation?

Comprehensive site assessment prior to rehabilitation
Detailed project-specific design calculations (liner thickness, loading)
Controlled curing and installation procedures
Real-time monitoring during inversion/curing
Third-party or independent lab verification when specified

Related Services at Hinterland Group

Additional Resources and References

Connect with Hinterland Group

Contact Hinterland Group
Telephone: (561) 640-3503
Headquarters: 2051 West Blue Heron Blvd., Riviera Beach, Florida 33404

Hinterland Group—ensuring your pipeline rehabilitation project is a PRIME success, with safety, compliance, and quality at the core of every phase.

Design and QA/QC Standards: ASTM F1216 and Beyond