Plumbing Engineering Design
Reliable Systems.
Seamless Coordination.
Led by a designer holding ASPE’s CPD (Certified in Plumbing Design) credential, our plumbing team designs domestic water, sanitary, storm, and specialty systems to the IPC, UPC, or state plumbing code as adopted, with fuel gas to the IFGC or NFPA 54. From fixture-unit calculations to riser diagrams, each package is coordinated with structure and mechanical (in BIM on BIM-based projects) — delivering clean, constructable documents for everything from restaurants to high-rise residential.
Plumbing System Design
CoreX Engineers produces coordinated plumbing construction documents for new construction, renovations, and system replacements — from schematic design through deliverables ready for your engineer of record’s review, seal, and issue.
- Gas piping layouts & sizing
- Plumbing riser diagrams — water, sanitary, vent, storm & gas
- Plumbing fixture & equipment schedules
Specialty Plumbing Systems
CoreX Engineers provides specialty plumbing engineering for food service, healthcare, hospitality, industrial, and commercial facilities with project-specific piping and equipment requirements.
- Grease waste & interceptor design for commercial kitchens
- Condensate drainage system design
- Radon mitigation coordination — routing and rough-in provisions; system design by a certified radon mitigation professional
- Rainwater harvesting system coordination
- Plumbing coordination with fire-protection systems
- Specialty fixture & equipment connection schedules
Water Distribution & Pressure Systems
We design domestic water and hot-water systems around fixture demand, available pressure, and building use — supporting reliable delivery, temperature control, and efficient operation.
- Cold & hot water distribution system design
- PEX piping system & manifold design
- Water Supply Fixture Unit (WSFU) hydraulic calculations & domestic water pipe sizing
- Water heater sizing & selection
- Hot water recirculation system design
- Booster pump sizing & selection
- Pressure-reducing valve (PRV) sizing & selection
- Plumbing valve layout & isolation valve planning
- Water treatment & filtration coordination
- Water hammer protection system design
- Backflow prevention & cross-connection control
Sanitary & Storm Drainage Systems
We design sanitary waste, vent, and storm drainage systems around fixture loads, drainage conditions, maintenance access, and applicable codes — supporting dependable flow and coordinated routing.
- Sanitary waste & vent layouts
- Drainage Fixture Unit (DFU) hydraulic calculations, pipe sizing & slope criteria
- Waste & vent riser diagrams
- Storm drainage & roof drain coordination
- Cleanout layout & accessibility compliance
- Backwater valve & drainage protection
- Sump pump & sewage ejector system design
- BIM-coordinated drainage routing
Independent Review & Construction Support
Beyond design, CoreX brings independent review and construction-phase support to your projects — peer review of plumbing documents, plan review support for city projects, and construction administration support that helps keep designs accurate, code-compliant, and buildable from permit through construction.
- Peer review of plumbing design documents
- Plan review support for city projects
- Construction administration support (RFIs, submittals & shop-drawing review)
- Code compliance and constructability review
- Value engineering & cost-reduction review
- Plan-check comment responses and resubmittal sets, prepared for your engineer of record to issue
For municipal plan-review work, CoreX supports a jurisdiction-authorized reviewer holding the required credential — such as an ICC-certified Plumbing Plans Examiner or a licensed PE — who issues the official determination.
IPC, UPC, or a state plumbing code (such as New Jersey’s NSPC) depending on your project’s jurisdiction, plus state and local amendments. We confirm the applicable code edition and AHJ requirements during pre-design — to minimize surprises at plan check.
Yes. For full-design scopes, our plumbing packages include the applicable water, sanitary, vent, storm, and gas riser or isometric diagrams, along with fixture-unit calculations, pipe sizing, fixture schedules, and the details required for plan review and construction.
Yes. We design grease waste and interceptor systems for commercial kitchens, compressed-air systems and treated-water distribution (treatment packages by the vendor), booster pump and pressure-zone systems for high-rise buildings, and building storm drainage coordination.
For BIM-based projects, plumbing routing is coordinated in Revit and Autodesk Docs or BIM 360, as applicable, and reviewed for clashes in Navisworks. For CAD-based projects, we coordinate routing against the available architectural, structural, mechanical, and electrical backgrounds — helping identify conflicts before construction.
Yes. Many of our clients are consulting firms and architects who bring us in for overflow or full-scope plumbing work. We produce to your templates, title blocks, and standards so the set reads as your own, and we coordinate directly with your project leads throughout.
CoreX works as a design support partner: we prepare the complete calculations and construction documents under the direction of the licensed engineer of record for your project, who reviews, seals and issues the final set. Responsible charge stays with your engineer of record while we carry the production load.
Architectural floor plans (CAD or Revit), the building’s use and occupancy, fixture counts or program, project location, and any owner or jurisdiction requirements. We reply within one business day. From there we agree on scope, deliverables, and milestones and begin with fixture-unit calculations and pipe sizing.
Yes — we respond to plumbing RFIs, review submittals and shop drawings against the design intent, and prepare clarification sketches and revisions for your engineer of record to issue as construction progresses.