University Facilities

Division 33 - Utilities

33 00 00 General Information and Design Guidelines

Design

This division covers the design of the systems providing utilities to facilities and other infrastructure components of the campus. It is comprised of six separate areas dealing with utility distribution – water, sanitary sewerage, storm sewerage, mechanical (hydronic and steam) systems, electrical, and communication systems. The design must include all necessary specifications and drawings to adequately detail the work to be installed. The designer shall also be aware that in some cases portions of the exterior utility work may be accomplished by subcontractors doing work specified in other divisions. A single, comprehensive drawing showing all site work and utilities shall be provided. Depending on the complexity of the project, individual drawings may also be required.

New construction and major renovations must include submetering of lighting, plug loads, equipment loads, and HVAC by floor, major departments, or other functional operational units. Connectivity: Johnson Controls Metasys

See Section 00 03 00 concerning the requirements and charges for temporary utilities that may be specified in the contract.

Clearly specify soil compaction requirements for the backfill in the trenches used for the installation of all of the utilities in this Division. This needs to be in agreement with any compaction requirements specified in Division 31.

Clearly specify that all trenching activities shall comply with the tree protection requirements specified in Division 1 and in the attached “Tree Protection Policy”.

The designer shall give special attention to assuring that all required permits for both the construction of these utilities and the operation of them are obtained from the regulating authority.

Consult the Manual for Planning and Execution of the State Permanent Improvements for information concerning requirements, codes, and standards that are applicable to this design. The design shall comply with all local codes having jurisdiction, OSHA regulations, ADA compliance, and any applicable seismic codes.

Clearly specify the appropriate level of testing and inspections that are required of the individual utility systems and the specific phases of the inspections to be done at intervals of the installation, i.e., prior to backfill of the trench over any piping.

Clearly specify that the products to be provided for installation under this Division are in strict accordance with the Product and Material listing for this Division.

33 05 00 Common Work Results for Utilities

Trenchless Utility Installation

The university incorporates trenchless utility installation (directional boring) in instances that are either economically feasible or are a better choice in dealing with possible disruption of other services on campus. Consult with the Project Manager concerning options for utilizing this method of construction.

Utility Line Signs, Markers, and Flags

The university maintains a thorough mapping of the utility systems on campus. Although special attention is given to obtaining field locations of these utility systems as they are installed, various methods of marking these utilities for future reference is also desired. The designer is encouraged to utilize current technology available in providing on-site marking methods that will assist in utility location at later dates.

33 10 00 Water Utilities

Existing System and Design Information

Clemson University operates is own potable water distribution system, receiving water from Anderson Regional Joint Water System (ARJWS) at three connection points:

  • the east campus standpipe
  • the intersection of SC Route 93 and Palmetto Boulevard
  • the elevated storage tank behind the Clemson House

The Anderson Regional Joint Water System line feeding the University proceeds from a tap off of ARJWS’s 24 inch line at the National Guard Armory situated between US Route 76 and SC Route 28 Business (Old Pendleton Road). It runs via a 20 inch line to the point of take off to the east campus standpipe along US Route 76 and the entrance ramp from SC Route 93 north to US Route 76. At this point the line reduces to 16 inches and proceeds along the south side of SC Route 93 to Newman Road. It crosses to the north side of SC Route 93 at this point and proceeds along the north side of the road to the intersection of Palmetto Boulevard. At this point, the line reduces to 12 inches and continues down SC Route 93 where it turns north to the elevated tank behind the Clemson House. No taps for building service shall be made on these lines. More details of these lines can be obtained from the University Atlas through the Project Manager. Distribution pressure varies around the campus, therefore, for any proposed facility, request that a flow test for both static and residual pressure be made (the University can usually conduct these tests as needed).

Public Water Utility Distribution Piping

Refer to document “Domestic Water Riser Diagram” for specific details concerning building entry

Design must allow for and specify that piping shall be buried below recorded frost penetration, but no less that 36” below finished grade.

Specify the installation of appropriate thrust blocks that are needed to properly anchor piping at changes in direction and other required locations. The design must clearly indicate the details required for these thrust blocks.

Clearly specify the coordination of any permitting requirements for the installation of these water lines – both the permit to construct and the permit to operate the system. See Division 00 for permitting responsibilities. Specify the level and the method of disinfection of these water lines in accordance with permit requirements or other code requirements.

Regulations contained in the Safe Drinking Water Act concerning lead and copper concentrations shall be complied with, including the specification and the selection of piping materials to insure this compliance.

Fire Suppression Utility Water Distribution Piping

A major portion of the water distribution system on the campus that serves the fire protection systems in facilities are dual use lines and as such are designed in accordance with the appropriated codes. Lines that are dedicated fire protection lines are subject to the code requirements of the appropriate fire protection codes and fire officials, including the State Fire Marshal’s Office and the Clemson University Fire Marshal. Consult with the Project Manager for additional information and instruction.

The color scheme of fire hydrants installed on the fire suppression water system shall be in accordance with instructions contained in the AWWA Standard addressing Dry-Barrel Fire Hydrants.

Water Utility Distribution Valves

Specify that all underground valves shall be provided with a valve box and cover to allow access. Installations requiring special operating tools shall have the applicable tool furnished with the installation.

Water Utility Distribution Fire Hydrants

Adequately detail the orientation of fire hydrants to accommodate access by fire fighting equipment and vehicles. Consult with the Project Manager concerning coordination of the location and orientation with the University Fire Marshal.

Water Utility Metering

Clemson University prefers that water meters for a particular facility be located in a mechanical room or other appropriate location within the facility. This meter assembly must include all applicable backflow preventers and isolation valves. See Division 22 for additional information on metering.

Provide combination meters for potable water and standard meters for irrigation.

Disinfecting of Water Utility Distribution

The disinfection of new water distribution systems and piping must be specified in accordance with South Carolina DHEC requirements.

33 30 00 Sanitary Sewerage Utilities

Existing System and Design Information

Clemson University operates its own sanitary sewerage collection system and sewerage treatment plant. The locations of the piping on the system are shown on the University Utility Atlas, with sizes of some of the main trunk lines indicated. Consult with the Project Manager concerning the latest data base information concerning the sizes of other collection lines.

Clearly specify the coordination of any permitting requirements for the installation of any sanitary sewer lines – both the permit to construct and the permit to operate the system.

Sanitary Utility Sewerage Piping

All sanitary sewer piping must be installed true to line and grade of the design. Clearly specify any allowable tolerances in these installations and insist on adherence to these tolerance values.

Distance between manholes shall not exceed 250 linear feet.

Sanitary Utility Sewerage Structures

Manholes must be located at all changes in plan direction and abrupt changes in elevations. Drop manholes must be specified in accordance with accepted design guidelines.

Specify that all inverts in sanitary manholes shall be constructed in place – the use of pre-cast inverts is not allowed.

Pre-cast sanitary sewer manholes shall be specified to with an eccentric top section with cast in place ladder rungs.

Manhole rings and lids shall be specified to meet the requirements of the application. Lids shall have cast in letters stating “Sanitary Sewer”.

Sanitary Utility Sewerage Cleanouts

The location of cleanouts on sanitary sewer piping is generally prescribed by the applicable building code. However, there may be unique situations that require the installation of additional cleanouts in the piping system. The designer shall be attentive to these needs and consult with the Project Manager for other special requirements.

33 40 00 Storm Drainage Utilities

Existing System and Design Information

Clemson University’s storm sewerage system is generally laid out in three major distribution trunks, each draining approximately one-third of the campus. Proper storm drainage shall be addressed on any new structure or facility tied into the existing system. The designer shall be aware of the requirements of EPA/DHEC permitting requirements for NPDES Permits for Storm Water Discharges, and assure that any applicable aspects of these requirements are complied. The Project Manager can provide current information concerning any existing NPDES Permit issued to Clemson University. Design calculations for large drainage projects shall be submitted to the Project Manager. Specify that all construction requirements of any storm water permits shall be strictly adhered to by the contractor.

The University’s storm sewer system is not designed to handle storms of greater intensity than the theoretical ten-year frequency.

Storm Utility Drainage Piping

Specify that drainage lines are to be laid true to line and grade with properly connected joints and fittings. The minimum acceptable size for storm drainage piping receiving surface water from ground or paved areas is 15 inches in diameter.

Drainage systems serving foundations, areaways, and roofs shall connect to the University’s storm sewer system at a catch basin with a top elevation lower than the ground floor elevation of the building.

Curbs and gutters shall be planned to facilitate the disposal of storm water. Planter boxes and planted areas surrounded by walks shall be piped to the storm sewer system, rather than discharging onto walkways.

Storm Drainage Appurtenances

Design shall provide for manholes or catch basins at each point where either the grade or direction of storm sewers change. Manholes or catch basins in excess of 4 feet in depth must be provided with ladder type steps on a vertical wall of the structure.

All manholes and catch basins must be provided with frames and/or covers to allow access for maintenance.

Storm Drainage Water Retention Structures

The requirement of the construction of storm water retention structures is directly tied to the DHEC/NPDES permit that may be required for the project. Consult with the Project Manager for current information concerning the type of retention structure that may be used if required by the design.

33 60 00 Hydronic and Steam Energy Utilities

Existing System and Design Information

Chilled water is distributed throughout the campus via a campus loop chilled water supply and reverse return systems. Detailed information relating to the chilled water system can be found in Chilled Water System Design Data.

Steam and condensate systems are distributed throughout the campus via an underground conduit system or through the main utility tunnel system. This piping system consists of a steam line at 115 psig saturated, a pumped condensate return line, and a high pressure condensate drip line if required.

Hydronic (Chilled Water) Distribution Piping

Specify that the minimum depth of un-insulated chilled water lines be 6 feet below finished grade.

Specify insulation of chilled water lines in accordance with the Products and Material Listing for this Division.

Underground Steam and Condensate Distribution Piping

Steam manholes must be designed for proper drainage. Pipe the drainage to existing storm drainage system if possible.

Main distribution steam line piping must be designed utilizing an underground conduit system. Design and layout of the distribution piping must be such to allow for expansion in the underground conduit system through the use of expansion loops. The design must adequately detail type and location of all required anchors, guides, and supports.

Service connections to individual facilities are installed utilizing direct burial, pre-insulated piping as indicated in the Products and Materials Listing at the end of this Division.

Specify insulation of steam lines in accordance with the Products and Material Listing for this Division.

Metering

Both chilled water and steam distribution to the facility must be metered. The designer shall pay particular attention to clear piping requirements for the appropriate meter installation.

33 70 00 Electrical Utilities

Existing System and Design Information

Clemson University operates its own power distribution system through both concrete encased duct bank systems and the main utility tunnel system. Power is transmitted at 4160 or 12,470 volt wye, 3 phase, 4 wire, 60 cycle AC. Consult the Project Manager for the primary voltage to be provided for a project and guidelines on the specific circuit and connection equipment required and the number of conduit to be installed in a particular duct bank system.

Electrical Underground Ducts and Manholes

Conduit encased in concrete shall have spacers and supports installed in accordance with manufacturers specifications prior to placement of concrete placement. The concrete encasement surrounding the duct bank shall be rectangular in cross-section and provide at least 3 inches of concrete cover for the ducts. Conduit shall be separated by a minimum of 3 inches of concrete. Coordinate the requirements of the concrete encasement with the requirements for other concrete specified in Division 3.

Conduit joints shall be staggered by rows and layers to provide a duct line of maximum strength.

Specify that during construction, contractor shall protect partially completed line from the entrance of debris and dirt with suitable conduit plugs. At the completion of each section of duct line, specify that each conduit shall have a stiff bristle brush having the same diameter as the conduit and shall be pulled through each conduit until clear, then plugged with temporary end plugs. A pull string shall be installed in all empty conduit not used in the present project.

Duct lines shall have a continuous slope away from buildings of not less than 3%. Changes in direction of the conduits shall be accompanied with long sweep bends having a minimum radius of curvature of 25 feet. Changes in direction of the duct bank shall be minimized between manholes to facilitate pulling of cable.

A drain shall be provided in the bottom of each manhole and this drain connected to the storm drainage system if possible. In the event that it is not feasible to connect the drain to a nearby storm drain, consult with the Project Manager for possible alternatives.

Take special care in determining the finish elevations of manhole tops and covers to accommodate the installation and minimize surface water infiltration.

Medium Voltage Wiring

The designer shall be especially thorough in coordinating the requirements for wiring under this Division with those requirements specified in Division 26 of this document.

Specify adequate experience level and documentation of all personnel engaged in the installation of medium voltage wiring and the making of cable spices for this wiring.

Adequately specify any special tests, precautions, notifications, etc. that are needed prior to energizing any medium voltage cable and associated equipment. Any required tests shall be in accordance with IPCEA Standards.

Specify the proper protection of medium voltage cable both prior to installation and during the actual installation within a conduit system.

See Medium Voltage Cable Specification for additional information.

Utility Substations and Associated Equipment

The installation and construction of new substations or additions to existing substations require design based on the requirements of the individual substation. The Project Manager can supply the appropriate information on this type of facility and its specific requirements. See additional information supplied under Division 26 of this document.

33 80 00 Communications Utilities

Existing System and Design Information

Clemson University operates and maintains its own communications distribution system for information and data and cooperates with Bell South in the distribution of the telephone cabling system on campus. Consult the Project Manager for guidelines on the required number of conduit to be installed in a particular duct bank system to accommodate the communication system being installed.

Communications Underground Ducts, Manholes, and Handholes

The requirements for this section are, in general, the same as the requirements and instructions in Division 27 and Section 33 71 19 of this Division.

Communications Distribution Cabling

See instructions under Division 27 – Communications for information concerning communications cabling.

PRODUCTS AND MATERIALS – DIVISION 33 – UTILITIES

Water Utilities

Fire Suppression Water Distribution Piping

  • Ductile Iron – Schedule 40, with resilient joints. Use mechanical joints for fittings and appurtenances.

Fire Hydrants

  • Mueller Super Centurion 250 (not with Aquagrip), 3-way valve, with two 2-1/2” and one 4” hose connections.

Potable Water Distribution Piping

  • Ductile Iron – Schedule 40, with resilient joints. Use mechanical joints for fittings and appurtenances.
  • Polyvinylchloride (PVC) – Schedule 40, may be acceptable for use in some locations. Consult the Project Manager prior to specifying the use of PVC.

Valves

  • Eddy #F-2405, AWWA iron body, bronze trim, non-rising stem, mechanical joint connection, 200 psi, open to the left, with 2” operating nut. Underground installations shall require valve box and cover for access.

Sanitary Sewer Utilities

Manholes

  • Concrete pre-cast manholes with eccentric top section, with cast in place ladder rungs.

Manhole Rings and Lids

  • Cast iron, selected for proper strength for particular application. Lids shall have cast in letters stating “Sanitary Sewer.”

Sanitary Sewerage Piping

  • In areas subjected to heavy traffic loading or in difficult maintenance locations – Ductile Iron – Schedule 40.
  • In areas not subjected to heavy traffic loading – A-2000 PVC as manufactured by Contech.
  • The use of reinforced concrete pipe (RCP) for sanitary sewerage piping is not allowed.

Storm Drainage Utilities

Catch Basins and Junction Boxes

  • Pre-cast concrete, or built in place masonry, with cast in place steps if deeper that 4 feet.

Manhole Lids and Grates

  • Cast iron selected for proper strength for particular application. Lids must have cast in letters stating “Storm Sewer.”

Storm Drainage Piping

  • Reinforced concrete (RCP), Contech A-2000, or ADS (Advanced Drainage System slip-joint) depending on the location and particular application. Consult with the Project Manager.
  • The use of corrugated metal pipe is not allowed.

Mechanical Utilities

Hydronic (Chilled Water) Distribution Piping

  • 6” and smaller – Schedule 40 Ductile Iron
  • 6” through 12” – Schedule 30 Ductile Iron
  • 12” and larger – Schedule 20 Ductile Iron

Steam Distribution Piping

  • Steel pipe meeting ASTM A120 Grade A or ASTM A53 Grade B

Valves

  • Steam Piping – Class 150 cast steel, bolted bonnet, seal welded seat rings, butt weld ends.
  • Chilled Water Piping – Wafer type butterfly valves, as manufactured by Nibco or Demco, with 2” square operating nut, with valve box and cover.

Insulation

  • Steam Piping – High pressure – 2” O.C. Kaylo
  • Steam Piping – Low pressure and condensate – 1-1/2” O.C. Kaylo
  • Pumped concentrate – No insulation

Electrical Utilities

Electrical Underground Ducts

  • Concrete Encased Ductbanks – Rigid PVC, Type “EB”, as manufactured by Carlon or Queen City Plastics. Spacers, supports, and end bells shall be PVC or high impact polystyrene.
  • Direct Burial Ducts – Rigid steel conduit, galvanized with bitumastic coating.

Manholes

  • Pre-cast concrete, with 36” opening in top for frame and cover, based on AASHTO HS 20 loading, complete with cast iron frame and cover, pulling irons, cable racks, bottom drain, with provisions for attaching entering duct or conduit, and provisions for electrical grounding, if required.
  • Power manholes to be 8’ x 8’ x 8’ inside dimension. Telephone and Communication manholes to be 6’ x 6’ x 6’ inside dimension

Manhole Frames and Covers

  • Cast iron, Neenah rated for AASHTO HS 20 loading vehicular traffic, as manufactured by Sumter Machinery Company – EJIW 1825. Covers to have cast in letters stating either “Electric” or “Telephone” as appropriate.