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Quality System Auditing & Listinga man riding a skateboard on top of a road

Quality System Auditing & Listing

Improving quality and mitigating risks with quality system audits

Our team provides the following services in dealing with evaluation service agencies:

Application assistance Criteria and code determination Criteria development Dossier/portfolio compilation
Evaluation plans/test protocols Fast-track approval process Representation at code hearings Submittal and follow-through
Quality System Auditing & Listing
Quality System Auditing & Listing

Quality System Auditing & Listing

Quality System Auditing & Listing

Improving quality and mitigating risks with quality system audits

Our team provides the following services in dealing with evaluation service agencies:

Application assistance Criteria and code determination Criteria development Dossier/portfolio compilation
Evaluation plans/test protocols Fast-track approval process Representation at code hearings Submittal and follow-through
Quality System Auditing & Listing

Our team provides the following services in dealing with evaluation service agencies:

Application assistance Criteria and code determination Criteria development Dossier/portfolio compilation
Evaluation plans/test protocols Fast-track approval process Representation at code hearings Submittal and follow-through
Quality System Auditing & Listing

Our team provides the following services in dealing with evaluation service agencies:

Application assistance Criteria and code determination Criteria development Dossier/portfolio compilation
Evaluation plans/test protocols Fast-track approval process Representation at code hearings Submittal and follow-through
Quality System Auditing & Listing

We Use The Following Techniques

Quality System Auditing & Listing

Our team provides the following services in dealing with evaluation service agencies:

Application assistance Criteria and code determination Criteria development Dossier/portfolio compilation
Evaluation plans/test protocols Fast-track approval process Representation at code hearings Submittal and follow-through

Our team provides the following services in dealing with evaluation service agencies:

Application assistance Criteria and code determination Criteria development Dossier/portfolio compilation
Evaluation plans/test protocols Fast-track approval process Representation at code hearings Submittal and follow-through
Quality System Auditing & Listing
Quality System Auditing & Listing
  • Petrographic examination of concrete and cementitious materials (ASTM C856) including visual examination of specimens in as-received condition, stereomicroscopy of polished cross-sectional surfaces, thin section analysis using fluorescence microscopy, and phenolphthalein staining to characterize the composition and condition as well as causes of deterioration or distress in submitted samples,

  • Scanning electron microscopy with energy dispersive x-ray spectrometry (SEM/EDS) analysis (ASTM C1723) for elemental composition of concrete, cementitious materials, aggregate and secondary deposits,

  • Chloride analysis to measure acid-soluble chloride content (ASTM C1152) or water-soluble chloride content (ASTM C1218) within a material to evaluate for corrosion potential and external chloride exposure,

  • Hardened air void system analysis (ASTM C457) to evaluate for total air content and air void system parameters for freeze-thaw durability,

  • Volumetric proportioning testing (ASTM C457) to quantitatively assess proportioning of concrete in comparison with mix design or specifications,

  • Bulk resistivity testing (ASTM C1876) to characterize the capillary porosity of concrete mixture(s),

  • Petrographic examination of aggregates (ASTM C295) to identify potentially deleterious materials with potential for alkali-aggregate reactivity, staining, and/or pop-outs,

  • and more!

Quality System Auditing & Listing
Quality System Auditing & Listing

Material & Appliance Listing

Having a product evaluated to market and sell in the marketplace is oftentimes essential in the competitive world of building products. A quality system audit and product listing from our team provides the manufacturer documentation of compliance with applicable code bodies and standards, as well as giving peace of mind to AHJs (Authorities Having Jurisdiction) and the end-user.

We have decades of experience as an evaluator of manufactured housing and modular building products, in addition to a wide range of building products used in all aspects of building construction.

Partial list of products that have been listed by us:

Roofing Underlayment Metal Straps Pier Supports Metal Roofing Bottom Closure Board
Recycled Axles Foam Plastic Insulation Gas Appliances (refrigeration units, ovens, deep fat fryers, griddles, steam tables, coffee urns) Decorative Gas Log Sets Electric Appliances (refrigerators)

Consultation for Evaluation Services

New products are constantly being developed. These products, in many cases, do not address the required building codes, such as the International Building Code (IBC), existing Acceptance Criteria, or Evaluation Criteria. So, how does one obtain the necessary approvals required to bring these products to market?

Our team of experts can assist you with the entire approval process, from assisting in developing new Test Protocols, Evaluation Criteria, or Acceptance Criteria to simply guiding you with the application process. We offer an in-house staff of knowledgeable and experienced engineers who can guide you through the evaluation process, providing you with the best service possible. Being an ISO/IEC 17025 and 17020 accredited testing laboratory and a third-party inspection agency, you can also rely on us to conduct your testing and follow-up audits, should you require these services.

Our typical five-phase program is as follows:

Phase 1: Our team will review your product literature, material properties, past testing, and engineering. We will then review the Building Codes, Evaluation Criteria, and Acceptance Criteria(s) and, if necessary, determine what requirements need to be satisfied.
Phase 2: Once the scope of work or evaluation plan has been established (after Phase 1), a cost proposal will be prepared. Phase 3: The program developed in Phase 2 will be implemented. We will continue the coordination and feedback process with your chosen evaluation agency and your company.
Phase 4: The final package(s) will be submitted for approval. At this point, we will respond to any questions raised by the evaluation service agency and provide general consulting as needed to keep the application moving expeditiously. Phase 5: The plant receives inspection(s) and certification. A follow-up testing and reporting program will be implemented, with continuous monitoring, evaluation, and feedback being provided to the client to ensure that the plant is continually producing complying products.
Quality System Auditing & Listing
Quality System Auditing & Listing
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Quality System Auditing & Listing
Quality System Auditing & Listing

Evaluation Reports for Construction Products

A Code Evaluation Report is an important tool when responding to code officials, engineers, architects, specifiers, and even consumers who may have questions regarding your product’s compliance. With this report, you can show buyers how your product meets applicable code requirements.

Manufacturers who take advantage of our close working relationship and familiarity with Building Code Agencies benefit from the combined strengths of both organizations. This combination offers the following advantages:

  • Universal Recognition of Building Code Agency – offers easy acceptance of products by Authorities Having Jurisdiction (AHJ).
  • Wide-Ranging Market Exposure for Construction Products – offers a network of customers, code officials, architects, specifiers, media channels, and corporate partnerships.
  • Collaborative Efficiencies – offers project startup conversations with the Code Body (Such as ICC-ES and IAPMO) to determine the scope and the testing requirements and work together toward faster report completion and delivery.
You have access to our expertise
in the following areas:
Products we test include:
  • Accelerated Weathering
  • Code Compliance Consulting
  • Fire Testing
  • Hurricane Impact Testing
  • Natural Weathering
  • Physical Property Testing (WVT, Tension, Compression, Flexural, Peel Adhesion, etc.)
  • Pressure & Temperature Cycling
  • Quality Assurance
  • Structural Testing
  • Wind-Driven Rain Testing
  • Wind Resistance Testing
  • Wind Uplift Testing
  • Air, Water, & Vapor Barriers
  • Cladding
  • Doors
  • Fasteners
  • Floor/Deck Systems
  • Flooring Materials
  • Manufactured Wood
  • Plastic Lumber
  • Roofing Accessories
  • Roofing Materials
  • Wall Coverings
  • Wall Systems
  • Windows

Why Choose Us?

Quality Programs for Industry & Associations

By adding a certification or quality assurance program (QAP) to the services offered by your organization, you can elevate the level of service you provide to your memberships and bring recognition to your members.

As part of this program, Twining becomes an active partner in your organization. This program will give you the confidence to ensure specifiers and customers that products bearing QAP certification labels have been verified to meet program requirements on an ongoing basis through independent inspection and testing.

Our team uses federal and state regulations and client contractual obligations as a starting point. We align our criteria with accreditation standards, review best practices in your industry, and determine how you can strive to achieve them. These will become the basis of your organization’s policies and procedures.

Create Policies and Procedures

We work with your team to develop workflows and standard operating procedures that support your quality program and meet high principles for running your business. We train staff to ensure workflows are understood, implemented, and meeting the needs of your business.

Twining will offer developmental quality control manual assistance for the new QAP. Our experts have firsthand knowledge of the requirements of your unique products and are always available to lend assistance or answer questions from new QAP members. We will also serve as a third-party inspection agency as part of your program.

Data Analytics and Corrective Action Plans

Twining tracks results and trends when results are unsatisfactory, and performance needs improvement. Our team generates invaluable data collected during QAP implementation to empower organization management to develop action plans and achieve results.

Our program incorporates testing, inspection, and certification services that are right for you to ensure outstanding QAP results.

Twining Programs Association Partners
  • Twining Molder Program for EPS/XPS Manufacturers who want to become eligible to supply insulation to Exterior Insulation Finish Systems.
  • Twining Molder Program for non-EIFS Applications
  • Twining Molder Program for Geofoam
  • Polyurethane Spray Foam Quality Program
  • Structural Piers, Pier Pads, and Foundations Quality Program
  • House Wrap Quality Program
  • Wall Cladding Quality Program
  • Roof Underlayment Quality Program
  • Uplift Straps for Manufactured Buildings Program
  • Gas Appliance Quality Programs
  • National Mobility Equipment Dealers Association (NMEDA)
  • EIFS Industry Members Association (EIMA)
  • Vinyl Manufacturers Association (VMA)
  • U.S. Department of Housing and Urban Development (HUD)
  • International Code Council Evaluation Services (ICC-ES)
  • IAPMO / UES (International Association of Plumbing and Mechanical Officials / Uniform Evaluation Services)
  • DRJ Engineering (Structural Engineering and Design)
  • RMI (Rack Manufacturers Institute (Steel Storage Rack Industry Membership)
Quality System Auditing & Listing
Quality System Auditing & ListingQuality System Auditing & Listing
Quality System Auditing & Listing
Quality System Auditing & Listing

Mobility Equipment Vehicles

We are proud of our long-term relationship with the National Mobility Equipment Dealers Association (NMEDA) and the California Department of Rehabilitation (CA DOR). As a nationally recognized third-party inspection agency, we conduct dealership audits to verify that NMEDA-accredited locations are compliant with ADA and NMEDA QAP requirements. As a third party, we also maintain label reporting data for NMEDA dealer label reporting requirements.

Our knowledgeable and helpful auditors are NMEDA-certified technicians and have obtained certifications from adaptive equipment manufacturers.

Twining supports and benefits NMEDA and its members by sharing our professional expertise with NMEDA, promoting NMEDA to various state agencies, and participating in the annual NMEDA Conference to introduce our friendly auditors and audit processes to the dealer members.

Our experts are always available to answer any questions NMEDA members have about the quality system auditing process. Our team is here to help by creating a partnership and relationships in the auditing process, which makes for a more comfortable audit visit and helps dealers evaluate their business processes and maintain compliance through a documented assessment.

Services Industry Organizations Expert Interpretation of the Following Standards and Guidelines
  • Facility Inspection and Certification (Remote and/or On-Site)
  • Industry Certified Auditors
  • NMEDA QAP Auditing
  • NMEDA
  • ANSI
  • ASTM
  • NMEDA Guidelines and QAP Rules
  • CA DOR Specifications for Adaptive Driving Equipment (SADE)
  • SAE Standards
  • FMVSS/CMVSS and NHTSA

Our laboratory technicians are highly experienced with testing requirements of different pavement preservation materials. Twining laboratories consistently help public works agencies and contractors to test materials such as:

  • Slurry Seal

  • Microsurfacing

  • REAS

  • Chip Seal

The typical tests that we perform for such materials are:

  • Wet Track Abrasion

  • Asphalt content

  • Emulsion content

  • Aggregate gradation

  • Sand Equivalent

  • Consistency test (field test)

Our Balcony Inspection Services

Twining offers a range of services tailored to meet the unique needs of property owners and managers. Our services include:

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E3s Housing Balcony Inspections (CP1481)

We specialize in conducting thorough inspections in compliance with CP1481 requirements, ensuring the safety of residents and compliance with local regulations.

Structural Integrity Assessments

Structural Integrity Assessments

Our team assesses the structural integrity of your balconies, identifying potential issues related to materials, connections, and load-bearing capacity.

Safety Audits

Safety Audits

We conduct safety audits to ensure that your balconies meet the highest safety standards, including railings, guardrails, and fire safety measures.

Exterior Elevated Elements (E3s) Housing Balcony Inspection (CP1481)

An Exterior Elevated Elements (E3s) Housing Balcony Inspection (CP1481) is a comprehensive inspection of the balcony structure, including the railings, decking, and supports. The inspection is performed to identify any potential hazards or defects that could compromise the safety of the balcony.

The CP1481 inspection is based on a set of standards developed by the Canadian Construction Association (CCA). The standards cover a wide range of topics, including:

  • Design and construction requirements
  • Materials and workmanship requirements
  • Inspection and testing requirements

We are certified E3s inspector, and we have the experience and expertise to perform comprehensive Balcony Bill Inspections. Our team is well-versed in the local, state, and national building codes, including the requirements outlined in CP1481. We provide a thorough assessment of your balcony's structural integrity, materials, and overall safety, identify potential hazards, and recommend necessary repairs or improvements.

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