PLUMBING SPECIFICATIONS FOR 1744 JOHNSON ST.

Transcription

1 30 Greenway, NW Suite 11 Glen Burnie, Maryland tel fax PLUMBING SPECIFICATIONS FOR 1744 JOHNSON ST. VERSION 3 _

2 INDEX Page 2 to 4 Plumbing Specifications Page 5 Architectural Plans: Basement Plan Page 6 Architectural Plans: First Floor Plan Page 7 Architectural Plans: Second Floor Plan Page 8 Architectural Plans: Third Floor Plan Page 9 Architectural Plans: Rooftop Plan Page 10 Architectural Plans: Section B Page 11 Architectural Plans: Section D Page 12 Architectural Plans: Sector Plan Kitchen Page 13 Architectural Plans: Sector Plan Basement Bathroom Page 14 Architectural Plans: Sector Plan Second Floor Bathrooms Page 15 Architectural Plans: Sector Plan Master Bathroom Appendix Toolbase TechSpecs - Home-Run Plumbing Systems Page 1 of 15

3 Plumbing Specifications 1744 Johnson St. SPECIFICATIONS DIVISION 15. MECHANICAL General - Contractor shall review construction documents and provide labor and materials pertaining to the mechanical systems as required in said documents and as specified herein, while complying with all applicable building codes Plumbing - Plumbing shall be a fully operational system of hot and cold water. Provide and install all piping, vents, drains, sewage removal and water supply systems and connect with existing water supply and sewage systems. Provide and install appropriate insulation around piping. All permits and inspections are to be obtained by contractor as required by local building codes and the Uniform Plumbing Code. Sewer and Waste Piping Supply and install drainage system made of Schedule 40 PVC pipe throughout the entire house. This will include all of the necessary drainage piping required for the basement bathroom, existing basement ejector pump, basement sump pump, 1 st floor kitchen, 2 nd floor laundry room, 2 nd floor (2) bathrooms, and 3 rd floor bathroom. All connections shall have PVC cement or appropriate joint compound and be assembled tight for no leakage. Valves shall be Milwaukee Brand or equal. Connection to public sewer system shall comply with all local requirements. Caulk joints or provide neoprene gaskets for all sewer lines. Pitch shall be a minimum 1/8 per foot for soil lines larger than 3 diameter and a minimum of 1/4 per foot for soil lines 3 diameter or less. Waste Drainage - Install sewage clean-out at the end of each horizontal drainage run and every 100 feet per building code requirements. Vents shall be installed throughout plumbing connections and connected with the vertical stacks and vented through the roof. Check with local building code officials for specific venting requirements. Gas piping: - Supply and install new gas piping system, and connect to existing gas service. Gas piping will extend from existing service and supply tankless hot water heater on the 2 nd floor and the1st floor kitchen stove. Water Heater - Install Takagi TK1S gas fired tankless water heater in 2nd floor closet according to manufacturers recommendations and applicable building code. Water heater shall have appropriate safety valves, back flow preventers, pressure relief valves and drain assemblies. Connect stainless vent pipe installed by others to water heater. Follow manufacturer recommendations and building code requirements for installation. Option 1: Water Pipes The existing water service, which now provides water to the house, will remain and not be altered, repaired or replaced. Supply and install a complete new water piping system throughout Page 2 of 15

4 Plumbing Specifications 1744 Johnson St. Option 2: the house. All of the new water piping will extend from the existing water service to all of the fixtures described in the Plumbing Fixtures spread sheet on page 2. Use 1/2 and 3/4 minimum lines from supply lines to each plumbing fixture as required. At water heaters and hose bibs install a minimum 3/4 pipe. From water heater install 3/4-1 pipe to each room with branches to fixtures. Supply piping system should be designed to use the least amount of piping possible. Provide shut-off valves at sinks, toilets, water heater and other fixtures as required. Test all pipes under 100 lbs pressure per building code requirements. Water Pipes In 2 nd floor closet, install Vanguard Manabloc modular manifold plumbing system according to manufacturers recommendations and applicable plumbing codes. Use 3/8 pex supply line for each toilet, each sink, dishwasher, and ice maker.. Use ½ pex supply line for each hose bib, each shower, and hot water heater. Use 3/8 pex supply line for washer if less than 2.5 gmp flow is required, and ½ pex supply line if more than 2.5 gmp is required by the manufacturer. From the central manifold, provide each fixture with it s own dedicated hot (when appropriate) and cold supply line. Provide shut-off valves at sinks, toilets, water heater and other fixtures and at the central manifold as required. Test all pipes under 100 lbs pressure per building code requirements Plumbing Fixtures - Provide necessary piping, water and drains and install plumbing fixtures as shown on the construction documents and listed herein below. All fixtures supplied by owner. Pits for injector pump and sump pump are existing. Stainless vent for water heater installed by others. Location Fixture/Fittings Description Model # Mechanical Room Sump Pump Mechanical Room Injector pump Kitchen Gas Stove GEJGBP30SEK Kitchen Garbage disposal Kitchen Sink double-bowl, stainless steel Kitchen Dishwasher GE, GLD4260L Kitchen Ice maker W/D Closet Washer GE, WCVH6260F W/D Closet Electric Dryer GE, DCVH515EF First Floor Rear Deck Hose bib Third Floor Roof Deck Hose bib 1 st Floor Front Hose bib Basement Bathroom Sink single-bowl, porcelain Page 3 of 15

5 Plumbing Specifications 1744 Johnson St. Basement Bathroom Toilet Basement Bathroom Shower Tile base Second Floor East Bathroom Sink single-bowl, porcelain Second Floor East Bathroom Toilet Second Floor East Bathroom Bathtub/Shower Second Floor West Bathroom Sink single-bowl, porcelain Second Floor West Bathroom Toilet Second Floor West Bathroom Bathtub/Shower Second Floor West Bathroom closet Water Heater/ Pex Manifold Takagi/Vanguard Master Bathroom Sink double-bowl, porcelain Master Bathroom Toilet Master Bathroom Whirlpool/Shower TK1S Page 4 of 15

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17 YOUR BLUEPRINT FOR USING ADVANCED BUILDING Home-Run TECHNOLOGY Plumbing Systems Home- Run Plumbing Systems DOLLARS & SENSE MAKING THE SWITCH RESULTS FROM THE FIELD FOOD FOR THOUGHT TECH CHECK Costs to buy, install, and operate home-run plumbing systems Page 2 What it takes to switch from traditional to home-run plumbing systems Page 2 Field evaluation results from Colorado, New Jersey, and Pennsylvania... Page 2 What to consider to be sure that home-run plumbing is right for you Page 3 Steps you need to take if you decide to start using this building technology Page 3 A GLANCE BENEFITS (+) / DRAWBACKS (-) + AFFORDABILITY: Reduced installation time/costs + ENERGY EFFICIENCY: Reduced heat loss + MARKETABILITY: Easy maintenance and repair; steady pressure and temperature with simultaneous use of several fixtures; quicker hot water delivery AFFORDABILITY: May require added training time/learning curve for trades; may require more pipe which adds to material costs INITIAL COST Cost of home-run plumbing system materials are often less than similar rigid pipe systems. Cost will depend on the system design, house size, distributor, and product availability. OPERATIONAL COST Because manifolds are installed in easily accessible locations and have fewer connections, home-run systems can significantly reduce maintenance and repair costs. They also can contribute to hot water energy savings, which can reduce utility bills. CODE ACCEPTANCE PEX piping is approved in all the major building codes, but has not received local code acceptance in some areas of the country. PEX tubing must comply with ASTM F876, Specification for Cross-Linked Polyethylene (PEX) Tubing, and ASTM F877, "Specification for Cross-linked Polyethylene (PEX) Plastic Hot and Cold Water Distribution Systems." Section P of the 2003 International Residential Code (IRC) covers Parallel Water- Distribution System Manifolds, and includes sizing, valves, distribution lines, and support. Section P2904 covers materials, joints, and connections. RESULTS FROM THE FIELD PATH field evaluations have demonstrated significant material and installed cost savings compared with traditional plumbing systems. WARRANTY Manufacturers typically offer a 10-year limited warranty on the manifold, piping, and fittings. MAKING THE SWITCH Home-run systems can take significantly less time to install than traditional rigid pipe plumbing systems once the learning curve has been overcome. Trades need to receive training in proper handling and installation. Requires some specialized tools. Special care required to eliminate construction and line debris from sensitive manifolds. THE BASICS Home-run plumbing systems act as control centers, or manifolds, for hot and cold water that feed supply lines to individual fixtures. Also called manifold systems, they consist of a plastic or metal plumbing manifold and flexible plastic piping. Generally, home-run systems use crosslinked polyethylene piping (PEX), which is suitable for hot water use and resistant to temperature extremes, chemical attack, and creep deformation. Because of the flexible piping, home-run systems can be installed more quickly than rigid plumbing systems, with only one fitting at the manifold, one transition fitting at the fixture, and no need for piping tees and elbows. However, fittings and couplings are available for special situations, such as repairing damaged piping or for creating changes in direction that are tighter than the minimum bend radius allowable for the piping. Home-run systems equalize pressure, and therefore allow several fixtures to be used simultaneously without dramatic changes in pressure or temperature. In addition, PEX piping can be sized 1/8-inch smaller in diameter than piping in a tree type conventional piping system for some fixtures. Hence, hot water arrives at fixtures faster, and less hot water is left standing in pipes after a draw (standing water creates energy loss to the surrounding air). PEX piping can reduce heat loss from water in the pipe because it is a better thermal insulator than copper. TECH SPECS > 1

18 Home-Run Plumbing Systems DOLLARS AND SENSE Initial Cost: Considerable labor and material savings have been documented in the field. $300-$1,200 less than copper for move-up production homes (Oakwood Homes) $200 less than conventional copper in production builder s Idea House (K. Hovnanian) $700 compared to copper for a remodeling application (Model remodel) Operating Cost: Moderate savings may be achieved, however, savings are not easily quantifiable. Studies underway are seeking this information. THE BASICS continued Because manifolds are installed in easily accessible locations, plumbing upgrades and repairs are simplified. Manifolds can be mounted between stud framing, and should be secured on a flat surface to prevent warping. Each outlet from the manifold typically has its own valve, making repairs at the fixture much easier. PEX tubing may melt, distort or crack if exposed to excessive heat, and should not be exposed to freezing or sunlight. In addition, abrasive surfaces that can damage PEX pipe should be avoided. Ensure that PEX piping has 12-inches vertical and 6-inches horizontal clearance from heat sources, such as light fixtures, gas flues, and heating appliances. Manifolds should be installed near, but not too close to, the water heater. Minimum clearances of 36-inches vertical and 18- inches horizontal are needed between a thermoplastic manifold and a water heater. Central manifolds should be installed in a convenient and accessible location, such as a basement wall or a service closet, which allows easy access for shut off to individual fixtures. A single length of PEX piping can run directly from a manifold through studs and around obstacles. The pipe is pulled, like a wire, from the manifold location to fixture locations. Unrolling the pipe with a reel will prevent kinking. The pipe is then secured with clips and cut. RESULTS FROM THE FIELD This technology has been used by other builders in real-world building situations learn from their experiences. Builders who have installed home-run systems as part of PATH Field Evaluations and Demonstrations have realized material and installation savings, and discovered tips for improving the transition from traditional plumbing. Denver, Colorado, Oakwood Homes (PATH Demonstration Site) Production builder of move-up homes implemented PEX and plastic plumbing manifold system Cost savings ranged from $300 to $1,200 less than lowest copper pricing Open-web floor joists facilitated installation of PEX and other technologies Installed waste and vent pipe prior to PEX installation to avoid damage to PEX from chemical welding Flushed main street line of sand and dirt before running water through manifold to prevent damage; installed valve upstream of manifold for this purpose To ease overhead work, plumbers used stilts commonly used by drywall contractors Freehold, New Jersey, K. Hovnanian (2002 PATH Field Evaluation) Production builder incorporated several advanced technologies in its Idea House. System was hybrid copper/pex Savings were approximately $200 versus conventional copper Plumbers did not like transitioning between copper and PEX in this hybrid system; however, they agreed that system can save installation time Code officials reluctant to allow this technology Learned to unroll the tubing before pulling through walls to prevent kinking; pulling tubing may require two workers one to push, one to pull Other lessons learned tubing tends to become stiff in cold weather; crimping tool can become cumbersome in tight spaces Philadelphia, Pennsylvania, Model remodel (1999 PATH Field Evaluation) Remodel of a Philadelphia row home demonstrating numerous technologies including a home run plumbing manifold with PEX piping Cost savings was $700 compared to conventional copper pipe Plumbing system installation took less than half the time to install copper piping MAKING THE SWITCH What is required to transition from your current building practices to using this technology? Familiarize yourself with home-run systems - Home-run plumbing is still a relatively new concept for residential construction. Being informed about its advantages, local code acceptance, and installation procedures will help ease the implementation process with consumers, code officials, and trades. Obtain a system design from the manufacturer, or use manufacturer-specified design tables. Consult your local codes - Check your local codes to be sure PEX is permitted, and to get any local variations to the model codes pertaining to PEX. Evaluate Your Home Designs Look for opportunities to locate manifolds centrally and minimize total piping lengths, and find accessible locations to mount central manifolds. Work with your trade contractors - According to manufacturers and field evaluations, home-run plumbing systems can be installed in about half the time of a traditional copper system. However, manifolds and PEX have some restrictions on use, and trades should be trained to ensure proper handling. Trades must be knowledgeable about manifold location, including proximity to water heaters and other heat sources. Tools - Specialized crimping tools are needed to make connections; one tool is needed for each piping diameter. Crimping tools require periodic calibration. Therefore, it is important to check the crimps with a gauge to ensure they are adequately compressed. Tool costs can range up to $300. TECH SPECS > 2

19 Home-Run Plumbing Systems FOOD FOR THOUGHT This section provides some things to think about before switching to this building technology make sure it s the right choice for you. Because of their accessibility, homerun systems work well with open building designs, where the home s utilities are built to facilitate future changes. Disentangling plumbing from other utilities, the building structure, and interior walls simplifies construction and eliminates the mess and much of the expense associated with traditional plumbing changes. Open building designs are particularly suitable for homeowners who want a low maintenance home or who want to upgrade their home in the future. Remodelers may find that PEX is easier to work with because, unlike rigid pipe, flexible piping can be snaked through walls and floors. Home-run systems work best with a centrally-located water heater. Additional remote manifolds may be needed to serve very large homes with extra plumbing fixtures. Home-run systems require proper planning to ensure optimal manifold placement and routing of PEX lines. Familiarity with local codes is vital, as local code officials may not yet be familiar with home-run systems. Be informed about the differences between PEX and polybutylene piping. Many consumers and contractors have negative perceptions of plastic piping because of previous polybutylene piping failures. Installing home-run systems requires a learning curve, so be equipped for the additional time and training of trades. Manifolds and PEX piping have several restrictions for proper handling; plumbers will need training to ensure that piping is used correctly, and site supervision may be needed to ensure proper installation. Although the systems can cost less to install than traditional plumbing, they may require more pipe. TIP: An open-web floor joist design allows greater efficiency for PEX installations and can result in a lower plumbing bid. Extra piping, on the order of seven inches per 50 feet of piping, is needed to allow for expansion and contraction. In addition, piping should not be secured too tightly to the framing, to account for expansion and contraction. Not all PEX piping is compatible with manifold systems, and special piping installation tools may be needed. A tee connection placed on the main supply line upstream of the manifold will allow flushing of the street line to eliminate sand or dirt that collects during construction before running water through the manifold. DEFINITIONS Cross-linked Polyethylene (PEX) Piping A type of flexible plastic piping, used for its suitability for hot water use and resistance to temperature extremes, chemical attack, and creep deformation Open Building Design A design approach that disentangles a building s structure, various utilities and floor plan from each other in order to accommodate future changes Central Plumbing Manifold the control center for multiple attachment of hot and cold water flexible plastic piping that runs to individual fixtures Polybutylene (PB) Piping a type of flexible plastic piping that looks similar to PEX, but experienced failures and caused class-action lawsuits; no longer used in U.S. markets. TECH CHECK Below is a checklist of steps to follow if you decide to implement this technology in your next building project. Train trades. Although home-run systems can be installed significantly faster than traditional plumbing, trades may require additional training and time for proper installation. Purchase all AAV materials for the drainage system. Consider an open building home design [optional]. Home-run plumbing systems lend themselves to open building or disentangled home designs, where utilities are separated from each other and the building s structure. This design offers several benefits, including ease of future upgrades and repair. After rough and finished plumbing testing, install and test the AAVs. Plan placement. Planning is required for optimal placement of the manifold. The manifold should be installed securely on a flat surface, in an accessible area that is near the water heater, but at a proper clearance to avoid heat damage. Ensure proper handling and installation on site. Plastic plumbing manifolds and PEX tubing both have specific handling and usage requirements to avoid damage from heat, freezing or puncturing. When getting started with home-run systems, site supervision may be required to ensure that these requirements are met. Conduct pressure test. TECH SPECS > 3

20 Home-Run Plumbing Systems The Partnership for Advancing Technology in Housing (PATH) is dedicated to accelerating the development and use of technologies that radically improve the quality, durability, energy efficiency, and affordability of America's housing. Managed by HUD, the PATH partnership includes the homebuilding, manufacturing, insurance and financial industries, and Federal agencies concerned with housing. PATH addresses barriers to innovation, provides information on advanced building technologies, and advances housing technology research; making affordable, quality American homes a reality. For more information on the PATH program, visit Tech Specs are Prepared for PATH by the NAHB Research Center. RESOURCES ToolBase Services Information on this building technology and many others brought to you by PATH and the building scientists at the NAHB Research Center Online installation videos are available for immediate download and viewing under the PATH Tech Inventory on ToolBase. American Society of Plumbing Engineers (ASPE) 8614 Catalpa Ave. Suite 1007 Chicago, IL Oakwood Homes 4908 Tower Road Denver, CO Plastic Pipe and Fittings Association 800 Roosevelt Road, Bldg C, Suite 20 Glen Ellyn IL Plastics Pipe Institute 1825 Connecticut Ave NW Suite 680 Washington, DC Fax: TECH SPECS > 4