Jacob Terherst

Experience Overview

Jacob Terherst leads Swanson Fire Protection's preconstruction and sprinkler system design efforts across the company's multi-state operating footprint.

With nearly two decades in the fire protection industry, Jacob combines extensive field installation experience with advanced system design and code interpretation. His background includes twelve years working as a fire sprinkler pipe fitter followed by eight years focused on sprinkler system layout, hydraulic calculations, and preconstruction coordination.

This progression from field installation to technical design leadership provides a practical perspective that aligns code compliance, hydraulic performance, and field constructability early in the project lifecycle. Jacob's work supports disciplined system classification, hydraulic planning, and coordinated design that reduces redesign cycles and improves first-pass approval outcomes.

Representative Project Experience

Jacob has designed and coordinated fire sprinkler systems across a wide range of occupancies and building types, including:

• Warehouse and distribution facilities
• Commercial office buildings
• Hospitals and healthcare facilities
• Churches and institutional buildings
• Multifamily residential developments (garden, podium, and mid-rise)
• Retail and restaurant occupancies
• Industrial and manufacturing facilities
• Single-family residential developments

His experience includes both new construction and retrofit projects requiring careful coordination with architectural, structural, and MEP systems.

Technical Strength Areas

Jacob's strongest technical capabilities center on code interpretation, hazard classification, and plan review coordination across complex construction environments. Key areas of expertise include:

• Hazard classification review and code analysis
• Hydraulic calculation modeling and density evaluation
• Standpipe system coordination and vertical infrastructure planning
• Fire pump coordination and water supply evaluation
• Plan review response and AHJ coordination
• Multi-state code interpretation and jurisdictional compliance

Jacob is particularly recognized for his deep familiarity with fire protection codes and standards. Strong code retention allows him to anticipate regulatory requirements early and minimize plan review conflicts.

Jurisdictional Experience

Jacob has designed and coordinated fire sprinkler systems across multiple jurisdictions, including:

• Florida
• Georgia
• South Carolina
• North Carolina
• Virginia
• Kentucky
• Tennessee
• Alabama
• Louisiana

His experience includes navigating a wide range of Authority Having Jurisdiction (AHJ) review processes and interpreting local amendments to NFPA standards.

While many jurisdictions follow national standards closely, others apply detailed local interpretations. Recognizing these differences early helps reduce resubmissions and maintain predictable permit timelines.

Design Philosophy

Disciplined fire sprinkler design is driven by early coordination, code analysis, and hydraulic planning before construction constraints force compromises.

Effective designers anticipate hazards, occupancy classifications, water supply limitations, and architectural conflicts so the system performs efficiently from the start.

Reactive design typically occurs when issues such as insufficient pressure, clearance conflicts, MEP coordination problems, or missed code requirements are discovered late in the process. These conditions often lead to rushed revisions, field redesign, and schedule delays.

The difference between disciplined and reactive design is proactive coordination versus problem-solving under pressure after oversights appear.

Preconstruction Perspective

Several early decisions in the preconstruction phase significantly influence sprinkler system performance and approval timelines.

• System classification should be identified during the bid phase and confirmed before design begins. Early alignment prevents conflicting assumptions later in the project.
• One of the most common avoidable design issues occurs when construction documents reference conflicting codes or standards for the same building area. Resolving these conflicts early prevents redesign later.
• Another frequent coordination challenge occurs when outdated architectural or MEP drawings are used during system layout. Early drawing verification helps avoid downstream design conflicts.

Field and Inspection Perspective

Jacob spent twelve years installing fire sprinkler systems as a pipe fitter before moving into design. That experience provides a clear understanding of installer workflow, construction sequencing, and field constraints.

This background helps ensure sprinkler system layouts are both technically compliant and practical to install.

Jacob also incorporates inspection and testing considerations into system design whenever possible. NFPA 25 inspection requirements are often overlooked during design but directly affect long-term system maintenance and compliance.

By anticipating these requirements early, design decisions can better support long-term system performance.

Industry Background

Jacob's experience in construction began long before entering the fire protection industry.

Raised in a family of tradespeople, he spent much of his childhood working alongside his grandfather, a concrete finisher, and his father, a general carpenter and builder. This early exposure to construction environments shaped a practical approach to sprinkler system design focused on coordination, constructability, and long-term reliability.

Articles by Jacob Terherst

• NFPA 13 vs 13R vs 13D
• Fire Sprinkler Cost Drivers in Multifamily Construction

Jacob contributes to Swanson Fire Protection's technical publications focused on system classification strategy, hydraulic planning, and sprinkler system coordination in multifamily construction.