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Table of Contents:  

Section 8-1: Plumbing Design Considerations

Section 8-1: Plumbing Design Considerations
 
8-1-00 Design Requirements
       10 Design Guidance 
       20 Design Information (Reserved)
       30 Design Document Requirements

8-1-00 Design Requirements
 
The requirements of this chapter apply to systems within the plumbing and process piping engineering disciplines, including but not limited to various water, waste and drainage systems, process and fuel gasses, medical gasses, vacuum services, special process fluids, as well as associated fixtures, equipment, controls and appurtenances.  The program goals and objectives herein are intended to provide uniformity of design based on the requirements of the DRM, combine the best overall economy with suitability of design, and promote compatibility with other building systems and operational procedures.  The term “Plumbing” as utilized in this chapter is used loosely to broadly characterize all plumbing and process piping systems within the scope of this chapter.
 
A. General Planning Requirements:
The plumbing systems shall be coordinated with the laboratory-planning module.  Adequate fluid temperature, pressure, and volume shall be delivered to required laboratory functions through conservatively sized pipe mains and careful review of programming and equipment requirements, in addition to the requirements of the DRM.  Future capacity allowances need to be considered in building designs including utility services, main risers and major branch lines, as well as equipment room space planning and interdisciplinary coordination of projected future requirements.  
 
Building services (such as centralized bottled gases and compressed air required for research), shall be considered in the design to facilitate modular systems and services for the facility.  Manifolding gases and decentralizing some services can be evaluated as described herein.
 
Provision shall be made for the addition of future loads on a project-by-project basis, and in some cases may need to exceed the requirements of the DRM. Early planning and coordination with the entire design team is critical and close coordination between mechanical, electrical, and structural disciplines is required to minimize interference of piping/ventilating systems and electrical systems, with structural framing.  See Section 1  Integrated Pest Management for pest control requirements.
 
Plumbing requirements are often dictated by user and program requirements during the design phase.  These are subject to change because of improving equipment technology and the need to remain state-of-the-art when the construction process is completed.  The A/E shall clearly understand the wide range of utility requirements and design flexible distribution systems to support future connections.
 
B. Animal Research Facilities, Special Considerations:
Types of plumbing systems in the animal facility may include wash systems, waste drainage systems, animal drinking water systems, and vivarium gas systems.  Plumbing systems specifically installed for animal support require close review with an animal care specialist to determine the exact requirements.
 
Requirements for animal facility plumbing system design shall carefully minimize the potential for accumulating dirt and pest harborage; promote controlled and limited access to the animal care areas; and ensure that all pipes, mounting brackets, supports, etc. are sealed during installation.  Systems shall be designed in as much as possible to preclude disruption or disturbances to animals through normal operation and maintenance. Escutcheons shall be avoided at piping penetrations, and the use of access doors opening into walls and ceilings should also be avoided.  Exposed piping inside animal research facilities shall be minimized, and where required shall standoff from walls at least 25 mm (1 in.) to permit cleaning and minimize concealed fouling spaces.
 
Special care is needed in the design of facilities for Specific Pathogen Free (SPF) animals to minimize potential for cross contamination and maintain the sanitary environment.  Design issues such as quality and source of drinking water, clean and sanitary surfaces, sealing and cleanliness of penetrations, isolation from potential contaminant sources and adjacent spaces etc. all must be considered.
 
B.1 Special Plumbing Considerations for Aquatics:
Slight variations in water salinity, temperature, or pH can kill the animals., therefore systems shall be designed to ensure precise and adequate control, failsafe protection, and monitoring. Controls shall be properly calibrated. Piping shall be of an inert material. Plastic resins shall be free of lead and shall not leach chemicals.  Metal piping, especially copper and zinc piping, shall be avoided since it leaches chemicals that are toxic to most aquatic species.  Floor drains shall be designed to minimize the retention of organic matter (no recesses, inaccessible lips, etc.) and be easily accessible for cleaning and pest management inspection.  If a saline environment is required, the equipment shall include a supply-mixing tank upstream from the holding tanks.  In a saline environment, all materials shall be corrosion resistant, including receiving drains and fixtures. Stainless steel is not utilized for drains and components in saline environments. Treatment and distribution systems for aquatics shall be designed by an engineer experienced in such specialty, and shall include comprehensive consultations with the use group. 
 
C. Common Technical Requirements:
 
C.1 Capacity:
Overall, the design of the piping distribution shall be based on a modular layout.  Systems shall be designed to ensure reliability, maximize operational flexibility and capacity for renovation, allow service to occur without interfering with research, and to minimize potential for disruption due to single point failures and routine maintenance.  A primary goal for distribution systems is to minimize floor penetrations in laboratory areas.  Primary equipment, service mains and risers shall be sized to provide 20% overage beyond required design loads to allow for increased future demands and density compression, separate from any known expansion.  The A/E shall utilize efficient capacity split for sizing primary equipment to provide required redundancy and overage while maintaining efficient operation for the normal operating load profile. 
 
Whenever connections are made into existing systems to serve new equipment, additions, or renovated areas, the A/E shall ensure the existing system will not be adversely affected or in any case fall below the standards of code or NIH DRM requirements as a result of the new work.  This may require the A/E to study existing infrastructure and systems capacity far beyond the actual planned point of connection to ensure adequacy.
 
C.2 Distribution:
Pressurized piping distribution systems shall consist of main system vertical risers that are located in permanent mechanical shafts or at building structural columns, or in the case of utility corridor building concepts, main risers may be located at each end of the utility corridor.  Vertical risers shall not be located within laboratory program area, behind individual fixtures, or in any other manner that does would not promote complete and independent horizontal distribution and isolation of services to each floor from main system risers located in an area outside the primary program space.
 
Horizontal distribution mains shall be located in permanent chases, ceilings, or interstitial spaces, with individual room runouts to accommodate the architectural layout of the building.  A utility corridor concept or interstitial space concept is generally used for biomedical laboratory and animal research facilities.  The design approach shall result in a repetitive and standardized grid arrangement of the risers, mains, branches, and runouts.  Piping and valving arrangements shall allow for shutdown of individual laboratories, as well as independent isolation of each floor, building wing, and zone without affecting other areas.
 
Redundant risers, remotely located at each end of the building wing or near each end of the corridor shall be provided for water service, carbon dioxide, and any additional pressurized service deemed necessary to preclude loss of research and permit continued facility operations during times of renovation or repair. Ideally, these risers should be located such that one riser is in the building wing served, and a secondary redundant active riser is located outside the building wing or in an area common to multiple building wings, thereby permitting complete renovation of any building wing without affecting adjacent areas. These risers shall be interconnected at least at the top and bottom, and at the A/E option may be interconnected on each floor.  Valving shall be provided above, below, and on each floor take-off from the riser to permit each riser to be utilized in a bi-directional feed mode as may be necessary to allow continued operation with either riser or any segment of a riser isolated. The need for redundant risers for lab vacuum, compressed air, RO and other process services shall be determined on a case by case basis and is not automatically required.  Secondary services (such as for hot water circulation) need not be redundant.  In general, systems shall be arranged to maintain continuous service to each floor and minimize potential for single-point failures or loss of service, including during times of renovation.  All double-fed horizontal mains shall include valves to permit sectionalizing for alterations and repair. 
 
Horizontal distribution mains for pressurized services shall be located on the floor or within the interstitial space above the floor where equipment or fixtures are to be served.  Horizontal distribution mains serving each floor shall be independently connected to supply risers, and shall not serve fixtures or equipment on other floors through branch lines upfed or downfed through a floor slab.  The distribution arrangement shall ensure an entire floor may be shut-down without affecting fixtures or equipment on other floors.  Where pressurized services are looped or arranged as double-fed mains to maximize reliability,  sectionalizing valves shall be provided such that a branch or portion of the piping serving an individual lab and individual floors may be shutdown without disrupting the service to the entire floor, other floors, or building areas.
 
Service pipe runouts shall be placed at regular intervals in service shafts or utility corridors to ensure accessibility for future connections with minimum disruption to research programs in adjacent spaces.  Runouts shall be valved and capped.  All piping stubouts to fixtures and equipment should be rigidly braced to structure.
 
Piping shall not be or routed above major electrical, telecommunications, or other critical equipment (including service access for such items), and shall avoid such rooms unless serving such spaces.  Only with prior NIH ORF approval and where other options for rerouting are not feasible will monitored double containment piping systems be considered.  The use of drip pans is not equivalent. Piping shall not be buried below the floor under major electrical rooms, telecommunication service entrances, or other critical spaces where need to excavate to repair or renovate such piping would introduce otherwise unnecessary operational disruption, safety or security hazards.  In as much as possible, piping shall not be buried under slabs directly below major mechanical, research or vivarium/ cagewash equipment or where otherwise inaccessible without causing undue disruption.
 
C.3 Valving and Access:
Isolation valves shall be provided to accommodate easy maintenance at each module, laboratory, group of toilet rooms, program suite, or other distribution lines where routine service shall be required without affecting other areas.  Isolation valves shall be accessible and located on the floor being served or in the interstitial space serving the respective program area.  All valves shall be clearly identified (labeled/tagged), and correspond to the facility valve numbering and identification system, keyed to submitted charts.  Each fixture and equipment item (with the exception of individual turrets that are not part of a capture device) shall be provided with an individual isolation valve or fixture stop.  Drains shall be provided at the base of all water risers and include NPT threads, valve, and cap.
Space shall be provided for accessibility to permit modifications and maintenance to the system.  Equipment shall include, but not be limited to, valves, cleanouts, motors, controllers, and drain points, etc.  Where required, access doors or panels shall be provided. 
 
C.4 Materials:
Piping, fittings, and joint materials and methods shall be compatible with system application and specified in accordance with Exhibit X 6-3-A. Piping Materials in the HVAC Chapter.  All plumbing piping systems shall be identified using pipe labels as required.  See HVAC Chapter 6 Section 6-9 “System & Piping Identification and Materials”.
 
Where renovations occur in existing facilities and especially where taps are made into existing systems, it is preferable to match existing piping materials in as much as possible so long as the materials and joint methods are in conformance with the requirements of Exhibit X 6-3-A.
 
The selection of materials and installation methods shall incorporate special requirements unique to individual program areas, such as consideration of magnetic fields, special materials, shielding, also all types of chemical exposure etc. in accordance with equipment and functional operation requirements.  Also see “Stainless Steel Trap Corrosion” document on our web site:  http://orf.od.nih.gov/PoliciesAndGuidelines/Bioenvironmental/
 
C.5 Penetrations:
Floor penetrations shall be minimized, and all penetrations shall be appropriately sealed to prevent leakage and maintain the fire rating of the slab.  Pipe sleeves shall be provided at all penetrations through floors, except that pipe sleeves are not automatically required for underground buried piping passing through the lowest building floor slab on grade, unless otherwise necessary for corrosion resistance or to prevent moisture infiltration. Pipe sleeves shall extend a minimum 50 mm (2 in.) above the floor and 13 mm (1/2 in.) below the floor and shall include a built-in water stop and appropriate seal.
 
In existing facilities renovated to accommodate new lab program, the A/E should be diligent to seal existing penetrations.  The use of expandable pressure-plate type mechanical link sealing devices (that meet fire/smoke stop requirements) is often recommended for cases where a raised pipe sleeve penetration would prove impractical in existing installations. 
 
C.6 Noise and Vibration:
Equipment and piping installations shall be designed to preclude noise and vibration transfer beyond referenced limits, including but not limited to use of resilient supports, vibration dampening equipment bases, flexible connectors or braided hoses as appropriate, and other considerations as required for the intended operation of the facility. The A/E shall consider maximum acceptable noise and vibration criteria in each equipment selection, location, and system design. Where flexible connection devices are utilized (whether for accommodation of noise, vibration, or movement due to expansion and contraction), the selected device shall be specifically compatible for use with the fluid system contents, including cleanliness, purity, materials and elastomer selection, maximum temperature and pressures.  The A/E shall ensure appropriate application of control units with flexible connectors and proper system anchorage. Refer to the HVAC Chapter for additional details related to specific noise and vibration limits.
 
C.7 Utility Metering:
Utility metering shall be provided for primary utility services, capable of automatically registering peak flow and totalization to NIH building automation utility monitoring systems.  Meters are provided for steam make-up to water heaters only where required by the program or requested by NIH.


8-1-10 Design Guidance
 
A.  Overview:
The plumbing systems at the NIH are categorized as domestic potable water plumbing systems, industrial non-potable laboratory water plumbing systems, laboratory gas and vacuum systems, fuel systems, vivarium systems, medical gas systems, various types of pure water systems, and various process piping systems. 
 
Plumbing requirements are often dictated by user and program requirements during the design phase.  These are subject to change because of improving equipment technology and the need to remain state-of-the-art when the construction process is completed.  The A/E shall clearly understand the wide range of utility requirements necessary and design flexible distribution systems to support future connections.
 
Plumbing systems shall support the needs of the building occupants; be easily maintained and operated, have reliable and redundant components; and be efficient to operate.  Typically each facility will have numerous piping connections which shall be concisely detailed and engineered in the contract documents to suit the applications intended to be supported or serviced.
 
B.  References:
The A/E design firm shall use and comply with the design and safety guidelines, and references listed in Appendix A as well as other requirements received or directed from the NIH Project Officer or required by the program.  The A/E shall utilize the latest editions of referenced design and safety guidelines available at the time of the design contract award.
 
Plumbing systems shall meet the requirements of the current edition of one of the three national model plumbing codes, in addition to written requirements of the NIH DRM. In cases of conflict between the adopted or selected code and the NIH DRM, the most stringent, technically appropriate, and conservative criteria shall apply.  The code is typically a minimum standard, and in most cases the DRM is most stringent.  Where it is unclear which criteria is to be applied, application for clarification may be made to the project officer.  In cases where the DRM specifically allows a practice lesser than that required under a national model code and the project is located external to the Bethesda Campus, an application for clarification should be made to the project officer. Plumbing fixture count shall comply with the requirements of the local adopted building code, which at the Bethesda and Poolesville Campus is the International Building (IBC) and International Plumbing (WSSC version) Code.
 
The three recognized national model plumbing codes are:  
 
• International Plumbing Code, International Code Council
• Uniform Plumbing Code, International Association of Plumbing and Mechanical Officials
• National Standard Plumbing Code, National Association of Plumbing, Heating, and Cooling Contractors
 
Note: Requirements within the same system shall not be blended between codes where such would compromise the code intent. For example, drainage and vent pipe sizing and required system vent locations as affected by system arrangement shall not be intermingled.
 
Fuel gas piping shall meet the requirements of the most current edition of the International Fuel Gas Code and NFPA-54.  Where alternative fuel gas systems are permitted (other than natural gas), compliance with the associated NFPA standard, IBC, and NIH DFM requirements are mandatory.
 
All wastewater discharges into the Washington Suburban Sanitary Commission (WSSC) sanitary sewer system shall conform to the industrial wastewater discharge parameters of the (Latest) WSSC Plumbing & Fuel Gas Code.
 
Process and specialty piping systems shall comply with the requirements of the DRM, as well as ASME Standards, CFR (US Code of Federal Regulations), and industry consensus standards as well as requirements of other regulatory agencies as deemed applicable or pertinent by the NIH or the A/E in agreement with the NIH.
 
In addition to requirements for conventional plumbing and process piping systems, there are specific industry guidelines and standards that should be followed in concert with the NIH Design Requirements Manual, as well as specific requirements that may be required by the program or received from the NIH Project Officer.  Applicable requirements of the following organizations are generally mandatory, unless otherwise waived or directed herein:
 
• American National Standards Institute, (ANSI), Washington, DC 20036.
• American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE), Atlanta, GA 30329
• American Society of Mechanical Engineers (ASME International), New York, New York, 10016
• American Society of Plumbing Engineers (ASPE) Technical Data Books, Chicago, IL 60656
• American Society of Sanitary Engineers (ASSE), Bay Village, OH 44140
• American Society of Testing and Materials, (ASTM International), West Conshohocken, PA, 19428
• American Welding Society (AWS) Miami, FL 33126
• Compressed Gas Association (CGA), Arlington, VA 22202
• Food and Drug Administration (FDA), Rockville, MD 20853
• Instrument Society of America (ISA) Research Triangle Park, NC 27709
• International Code Council (ICC), Washington, DC 20001
• International Association of Plumbing and Mechanical Officials (IAPMO), Ontario, CA 91761 -USA
• National Association of Corrosion Engineers (NACE), Houston, TX 77218
• National Sanitation Foundation (NSF), Ann Arbor, MI 48106
• American National Standard for Emergency Eyewash and Shower Equipment (ANSI Standards  Z358.1): American National Standards Institute (ANSI). 
• Planning and Design of Laboratory Facilities: Baker, J. H., Houang, L. (1983) the World Health Organization (WHO), Offset Publications, 72: 45-71.6.
• Occupational Safety and Health Standards, CFR 29, Part 1910: U.S. Department of Labor, Occupational Safety and Health Administration, (OSHA). Telephone 202-783-3238.
• Guidelines for Research Involving Recombinant DNA Molecules: U.S. Department of Health and Human Services, U.S. Public Health Services, National Institutes of Health, Federal Register/Vol. 51, No. 88: 16957-16985, Bethesda, MD:  National Institutes of Health. Telephone 301-496-9838.
• Laboratory Safety Monograph:  A Supplement to the NIH Guidelines for Recombinant DNA Research, U.S. Department of Health and Human Services, U.S. Public Health Service, National Institutes of Health Bethesda, MD: National Institutes of Health. Telephone 301- 496-2960.
• Guidelines for Laboratory Design: Health and Safety Considerations: DiBernardinis, L., and J.S. Baum, M.W. First, H.T. Gatewood, E.F. Gordon, and A.K. Seth. 1987.  New York: John Wiley and Sons.
• Biosafety in Microbiological and Biomedical Laboratories U.S. Department of Health and Human Services.  Washington, DC: Public Health Service, Centers for Disease Control, and National Institutes of Health, HHS Pub. No.(NIH)88-8395. Telephone 202-783-3238.
• NIH Guidelines for the Laboratory Use of Chemical Carcinogens: U.S. Department of Health and Human Services, Bethesda, MD:  National Institutes of Health, NIH Pub. No. 81-2385.  Telephone 301- 496-2960.
• National Fire Codes, all volumes: National Fire Protection Association, (NFPA), 1 Batterymarch Park, Quincy, MA 02269-9101, Telephone 617-770-3000.
• Guide for the Care and Use of Laboratory Animals: U.S. Department of Health and Human Services, Bethesda, MD:  National Institutes of Health, Pub. No.86-23, Telephone 202-783- 3238.
• Medical Laboratory Planning and Design: College of American Pathologists, Skokie, IL. Telephone 708-446- 8800 Ext. 531.
• Uniform Federal Accessibility Standards, FED STD 795
• The Americans with Disabilities Act Accessibility Guidelines• 
 
The A/E shall be cognizant of additional requirements in other sections of the DRM.  Many requirements related to plumbing systems are common with HVAC, and may be found in the HVAC chapter (Section 6).  For example the requirements for piping and joint materials, pipe and valve identification, vibration and noise isolation, and insulation may all be found in Section  6. 
 

8-1-30 Design Document Requirements
 
A.   Plumbing Document Requirements
 
All pressurized piping systems shall be provided with flow arrows on drawings to indicate direction of process flow.  Each system shall be represented with distinct nomenclature to promote legibility and the nomenclature should correspond with piping tagging and identification text. All gravity drainage piping drawings shall be provided with indication of the required installed slope and sufficient notations of piping invert elevation.  A separate plan shall be provided to indicate buried plumbing systems, and piping systems installed above the floor shall not be shown on the underground plan.  All underground plans for buried piping shall show foundation footings, respective grade beams, as well as the floor plan, partition layout, room names/type, and significant equipment/furnishings to be installed on the floor located on grade.  Typical plumbing floor plans shall indicate partitions, room names/type, and significant equipment/ furnishings for the same floor on which the piping is located. MEP equipment room plans shall clearly indicate service access and traffic aisle space, as well as locations or outline of significant equipment for other disciplines. Plumbing schedules shall specifically identify equipment and fixture connection requirements as well as equipment/appurtenance design capacities and correct adjustment of significant operating parameters.  The required pressure adjustments and flow rates for devices such as balancing valves, pressure reducing valves, booster pump controls, and similar field adjustments shall be indicated on drawings or within drawing schedules. Sufficient detail shall be provided in drawings and schedules to clearly indicate system requirements, and in general, systems shall not be so generic as to require contractor or vendors to perform professional design tasks.  A detailed legend sheet shall be provided for all plumbing line types, abbreviations, symbols, and instrumentation utilized.
 
All piping, including sanitary and lab waste lines, shall be indicated on the plan of the floor for which the piping is actually to be located.  Floor drains and buried structures for the lowest on-grade slab shall be shown and called out on the underground plan, and drain tops shown on the respective floor plan. Riser diagrams shall be provided for all plumbing/ piping systems for buildings over one story in height, and for all facilities operating at BSL-3 or above, and where otherwise required to clearly communicate design intent and necessary detail. Fixtures/ equipment callouts shall be indicated on riser diagrams, as well as either room numbers, reference lines, or other means to permit rapid interpretation of riser to the corresponding plan area.  Plumbing plans for above ground systems in lab, vivaria, kitchen, and mechanical room spaces shall generally be shown at a scale of not less than ¼ in.=1 ft. and underground systems at a scale not less than 1/8 in.=1 ft.  Plans depicting process fluid systems (including vivaria and medical gasses) shall be shown on separate plans from the conventional water, waste, fuel gas and storm, except shared plans are acceptable with an appropriate scale of not less than ¼ in.=1 ft.
 
Plumbing connections to laboratory, medical, food service, vivaria and other specialty equipment shall be fully detailed on drawings and in conformance with the requirements of the DRM.  The A/E shall not rely on space and equipment consultant planners alone to ensure appropriate engineering systems or proper system connections.
 
Where specialty process systems are provided, the design shall include PFD (Process Flow Diagrams) and P&ID’s (Process and Instrumentation Diagrams) for prior review by the NIH.  Preliminary operational and key control sequence descriptions shall be provided along with PFD diagrams, as appropriate depending on system complexity and necessity to adequately convey key information and salient features design review.  P&ID’s shall include a full written sequence identifying key operational, control, and safety elements with instrumentation detailed in accordance with ISA standards.  In some cases it is understood final P&ID’s may not be generated until after the contract is awarded, however in such cases, final P&ID’s shall be submitted for review and approval prior to procurement, consistent with PFD concepts as approved by NIH.
 
The design documents shall thoroughly communicate system engineering requirements, and in general, the A/E should not leave engineering activities up to the discretion of contractors and vendors.  This is not intended to preclude the assembly of primary manufacturer-engineered and assembled equipment, provided such arrangements comply with the DRM and that the design documents are provided with sufficient detail that NIH may confirm acceptability of the proposed arrangement during design document reviews. In certain cases, the NIH project officer may require addition submission of detailed drawings of vendor-arranged systems for concurrence prior to procurement.  . 
 
The A/E shall include in the project specifications that all systems shall be tested and inspected for conformance with the contract documents and the DRM.  Each plumbing installation shall be inspected, signed off, and thoroughly tested prior to concealment.  Plumbing work shall be reviewed for proper slope, joints, layout, materials, and installation.  Testing shall be provided for all systems and witnessed prior to backfill, concealment in walls, and again at final completion.  All installations shall be tested and inspected by qualified inspectors to at least the same degree as would be required for an installation off campus. Final inspection tests shall confirm proper installation and adjustment, code compliance, completeness, omission of cross connections, and leakage.  The engineer shall include in the specifications, that systems installation shall be performed by qualified personnel with either a state or local jurisdiction licensure and all required qualifications, appropriate for the type of work performed.
B.  Specific Submission Requirements
Plumbing Documents shall comply with the requirements listed in Appendix B “Architect-Engineer (A/E) Checklist of Services” as stated for the different phases of the particular project.  Projects phases may vary from project to project.  Typically, project phases include:  Pre-design, Schematic, Design Development, Construction Documents, and Construction Administration.
 
B.1  Pre-design Phase:
The pre-design phase shall include a detailed and project-specific basis of design technical narrative and preliminary system diagrams (flow diagrams).  The basis of design narrative shall be sufficiently detailed to convey the system intent (e.g. general description, areas served, significant features). The copy of preliminary calculations and preliminary cost estimate shall be included in this submission.
 
B.2  Schematic Design Phase:
Drawings shall show the arrangement of utilities, major services in and out of the building primary distribution paths, shafts sizing, MEP equipment room size, location, foot prints and access for service and replacement of MEPF Equipment, and preliminary Bases of Design (BOD), Flow Diagrams, incorporating NIH design directions and comments from the Pre-design Phase. In addition, preliminary calculations for sizing of key system equipment and primary infrastructure as well as key technical reports and analysis must be submitted at this phase.  Preliminary riser diagrams should be developed to show key elements and distribution concepts for each program area.
The outline specifications shall be included, as well as updated calculations and cost estimate.
 
B.3  Design Development Phase:
At the DD Submissions, document development shall have appropriately progressed and each submission must pick up or address all prior review comments.  The first DD submission should include comprehensive riser diagrams and details, and completion of NIH design review comments.  The second DD submission should be essentially complete, including final calculations and all previous NIH design review comments, leaving the final submission to only pick-up final minor details and final comments.  An updated copy of all calculations, project specifications, and the basis of design narrative shall be included in each submittal.  Project specifications shall be appropriately developed into detailed project-specific documents and updated for each submission. In addition, energy considerations and life-cycle cost analysis, updated cost estimates, preliminary construction phasing plans, control diagrams and draft commissioning documents shall be provided with all other documents indicated in other sections of the DRM.
 
B.4  Construction Documents Phase:
The Construction Documents shall include an updated and complete final basis of design narrative including final calculations, key reports and analysis, as well as the final energy model and life cycle analysis organized and bound suitable for use as project record documents. All previous NIH review comments shall have been incorporated or resolved to NIH satisfaction. Drawings shall be complete including fully sized riser diagrams and system diagrams for all systems and utilities, fully sized piping on the floor plans, equipment lay out and details, coordination of service access and major equipment egress/replacement paths, control diagrams, final P&IDs, construction phasing plans, final specifications including controls and commissioning, final cost estimate, and other documents indicated in other sections of the DRM. 
 
B.5  Construction Administration Phase:
Construction Administration typically includes:  shop drawing review, provision of responses to Request for Information (RFI) and drawing clarification requests, site visits and inspections, equipment start-up, participation in the commissioning process, punch list development, and other activities as required by the contract.
 
B.5.1  NIH Review of Contractor’s Submittals:
NIH reserves the right to review any and all contractors’ construction and equipment submittals.  At the NIH Project Officer’s request, copies of contractors’ submittals may be required for NIH’s review and concurrence.  This is especially true in the case of critical equipment or for systems where detailed P&ID and associated data deferred from initial A/E design.  The A/E shall incorporate any and all NIH review comments in the contractor’s submittal and the as built final documentation package.
 
B.6 Guidance for the A/E:
 
B.6.1 Cost Estimates (Systems and Quantity Takeoff Estimates)
Systems cost estimates shall be developed at design development stage and quantity take-off estimates shall be developed at the contract document stage.  The criteria for quantity take-off estimates may vary as it is described in the POR.
 
B.6.2 Calculations and Analysis
Each plumbing design submittal shall include, but not limited to the following design calculations, diagrams and analysis:
  Connected and/or demand load
  Riser diagrams for each system
  Storm water calculations
  Equipment and Distribution Sizing, flow and pressure calculations
  Process System P&IDs
  Materials adequacy/compatibility analysis

B.6.3  Contractor’s Requirements:
Project construction specifications shall require the contractor to provide the following:
• Contractor shall provide startup, testing and operation verification for all equipment provided in the project.
• Contractor shall provide owner training for all equipment provided in the project.  This shall include testing, operation and maintenance.  Training shall be video taped for future training sessions.  Copy of the DVD shall be turn into the Project Officer.
• Contractor shall provide complete Operation & Maintenance (O&M) manuals for all equipment provided in the project.  This shall include copies of all equipment related shop drawings, and copy of all warranties and guaranties with the appropriate manufacturer contact information.  An electronic copy, CD or DVD format, shall also be provided.  Scanned copies are not acceptable.

 

 



 
This page was last updated on May 23, 2013