Plumbing Seismic Letter of Compliance

When time matters and quality is non-negotiable, our Plumbing Letter of Seismic Compliance service provides the certified documentation needed to confirm that your plumbing seismic installation complies with the approved design and applicable building code requirements.

Before issuing a certified Plumbing Letter of Seismic Compliance, our engineers review the installation to verify that all required seismic restraints, anchors, braces, and supports have been installed in accordance with the approved design and current seismic codes. When required, we provide practical recommendations to resolve deficiencies quickly and help your project achieve compliance without unnecessary delays.

Our compliance reviews can include:

  • Engineering certification of compliant seismic installations 

  • Technical support throughout the project 

We deliver most Plumbing Letters of Seismic Compliance in less than 24 hours once the required documentation and inspection have been completed, helping you stay on schedule for inspections, occupancy permits, and project turnover. Our clients rely on our speed, technical expertise, and practical engineering approach to achieve seismic compliance without unnecessary delays or overcomplicated requirements.

Plumbing Seismic Design & Preliminary Report

A well-planned seismic design is the foundation of a successful plumbing installation. Our Plumbing Seismic Preliminary Report provides contractors with clear engineering guidance before work begins, identifying the seismic restraint requirements, anchorage methods, and bracing details needed to ensure a safe and code-compliant installation.

Our preliminary reports can include:

  • Identification of plumbing systems and equipment requiring seismic restraint

  • Seismic restraint requirements for boilers

  • Seismic restraint requirements for expansion tanks

  • Seismic restraint requirements for pumps

  • Seismic restraint requirements for gas piping

  • Seismic restraint requirements for domestic water, sanitary, storm, and glycol piping

  • Seismic restraint requirements for snow melting systems

  • Seismic restraint requirements for unit heaters 

  • Seismic restraint requirements for floor-mounted and ground-mounted plumbing equipment

  • Seismic restraint requirements for suspended plumbing equipment

  • Seismic restraint requirements for valves, backflow preventers, and piping accessories

  • Seismic bracing layouts and locations for plumbing and gas piping

  • Anchorage requirements and attachment methods for plumbing equipment

  • Installation details and engineering sketches

  • Applicable building code and seismic design requirements

  • Seismic calculations, where required

  • Equipment-specific restraint recommendations

  • Engineering notes and plumbing installation guidance

  • Coordination with mechanical drawings and project specifications

  • Answers to technical questions before and during installation

By addressing seismic requirements early, plumbing contractors can install systems correctly the first time, reduce field modifications, minimize costly delays, and simplify the inspection process. Following our recommendations from the start creates a smoother path toward obtaining your Plumbing Letter of Seismic Compliance and successful project completion.

Plumbing On-site Seismic Inspection

Our on-site plumbing seismic inspections can be performed before or after the installation of seismic restraints, depending on your project's needs.

A pre-installation inspection allows our engineers to review the existing plumbing installation, identify which equipment requires seismic restraint, and provide practical recommendations before work begins.

A post-installation inspection verifies that all seismic restraints have been installed correctly and comply with the approved design and applicable building codes before issuing a certified Plumbing Letter of Seismic Compliance.

Our inspections include:

  • Verification of plumbing seismic restraint installation

  • Inspection of plumbing equipment anchorage and fastener installation

  • Verification of seismic bracing locations, spacing, and orientation

  • Inspection of floor-mounted and suspended plumbing equipment

  • Inspection of seismic bracing for domestic water, sanitary, storm, gas, and glycol piping systems

  • Review of field conditions affecting plumbing seismic compliance

  • Identification of installation deficiencies and required corrections

  • Engineering recommendations during construction

  • Final compliance verification prior to issuing a Plumbing Seismic Letter of Compliance

During every visit, we work directly with plumbing contractors to answer technical questions, resolve field conditions, recommend practical solutions, and help your project pass inspection the first time.

Plumbing Remote Seismic Inspection

Our remote plumbing seismic inspections offer a cost-effective and time-saving alternative to on-site visits for smaller scale projects. Using FaceTime or photographs, our engineers can perform a comprehensive review of your plumbing installation without the need for travel.

Remote inspections can be performed before or after the installation of seismic restraints, depending on your project's needs.

A pre-installation remote inspection allows our engineers to review the existing plumbing installation, identify which equipment and piping require seismic restraint, and provide practical recommendations before work begins.

A post-installation remote inspection verifies that all seismic restraints have been installed correctly and comply with the approved design and applicable building codes before issuing a certified Plumbing Letter of Seismic Compliance.

Our remote inspections can include:

  • Review of photos, videos, and live video calls

  • Virtual review of plumbing seismic restraint installations

  • Review of plumbing seismic bracing layouts and installation details

  • Verification of seismic restraints for floor-mounted and suspended plumbing equipment

  • Review of seismic bracing for domestic water, sanitary, storm, gas, and glycol piping systems

  • Identification of non-compliant plumbing installations

  • Engineering recommendations and corrective guidance

  • Follow-up reviews after deficiencies have been addressed

  • Final compliance verification prior to issuing a Plumbing Seismic Letter of Compliance

By eliminating travel while maintaining the same engineering expertise, our remote inspections help reduce project costs, accelerate project schedules, and provide a fast path toward plumbing seismic compliance. We work directly with plumbing contractors to answer technical questions, review field conditions, recommend practical solutions, and issue a certified Plumbing Letter of Seismic Compliance as quickly as possible.

Seismic Plumbing Technical Support & Training

Proper seismic restraint installation begins with the right knowledge. Our Seismic Plumbing Technical Support & Training service provides contractors, project managers, installers, consultants, and engineering teams with the practical knowledge needed to confidently design, install, and inspect seismic restraint systems for plumbing equipment and piping.

Whether you're looking to train a single crew or your entire organization, our engineers offer customized training sessions tailored to your projects, experience level, and company standards. Training can be delivered remotely or in person, combining code requirements with real-world installation practices.

Training topics can include:

  • Plumbing Seismic Design Fundamentals

  • Plumbing Equipment Exemptions

  • Determining Which Plumbing Equipment Requires Seismic Restraint

  • Boilers, Pumps & Expansion Tank Seismic Requirements

  • Domestic Water, Sanitary & Storm Piping Seismic Requirements

  • Gas Piping Seismic Bracing Requirements

  • Glycol Piping & Snow Melting System Seismic Requirements

  • Unit Heater Seismic Requirements

  • Plumbing Equipment Anchorage Requirements

  • Seismic Bracing Layouts and Installation Details

  • Code Requirements and Compliance

  • Installation Best Practices

  • Common Installation Mistakes & How to Avoid Them

  • Plumbing Seismic Inspections

  • Answers to Any Plumbing Seismic Questions

Whether you are new to seismic bracing or looking to strengthen your team's expertise, our goal is to provide practical, easy-to-understand training that helps your company deliver safe, efficient, and code-compliant plumbing installations with confidence.

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