Page 40 - 2011 SDCA Project

7-2 GYMNASIUM PLUMBING SYSTEM gallons or less. Low flow water closets may be single-flush or dual-flush. A dual-flush
toilet permits its user to choose between two amounts of water. Some Low flow water
Systems Recommendations conditioning units and new ductwork. Low Flow (ultra low flow), 1/8 gallon per flush models with a battery powered flush The performance of a flush-toilet may be rated by a Maximum Performance (MaP) score.
closets are pressure-assisted (or power-assisted or pump-assisted or vacuum-assisted).
LOW FLOW or ULTRA LOW FLOW URINALS with SOLAR POWERED BATTERY
I.
The gymnasium in this facility has been recently updated with self-contained air
OPERATED SENSOR
The low end of MaP scores is 250. The high end of MaP scores is 1000. A toilet with a
sensor is the unit recommend for all new construction and retrofits. These low flow units
Recommendations for other facilities are:
MaP score of 1000 should provide trouble-free service. It should remove all waste with a
provide 85% of the water savings associated with waterless units without the cartridge
single flush; it should not plug; it should not harbor any odor; it should be easy to keep
changing costs.
I.
FABRIC DUCTWORK
clean. The United States Environmental Protection Agency uses a MaP score of 350 as
An Air sock is a textile or fabric duct used for air distribution and delivery of conditioned
air as an alternative to traditional spiral or rectangular steel ducts with grilles and
•
Low flow equals water savings
Advantages:
diffusers. Fabric ducts are usually cheaper in material cost, and are quicker to install than
•
Qualify for USGBC LEED point
Reduced water and sewer cost
•
conventional metal systems. Advantages: the minimum performance threshold for Low flow water closets.
• Low maintenance • Qualify for USGBC LEED point
Advantages: • Installation in new and retrofit situations • Installation in new and retrofit situations
• Light Weight • First cost is coming down • Payback around 1 ½ to 3 years
• No Condensation Disadvantages: • Environmentally friendly
• Indoor Air Quality • High up front cost in $ per unit
• Silent air delivery Disadvantages:
• Low labor/installation cost II. WATERLESS URINALS • Specifying the right manufacturer
• Simple maintenance The waterless urinal with wall outlet saves you water and money. The unit eliminates
• Wide range of colors water and sewer costs from urinals; reduces maintenance and repair bills; and is IV. Faucet’s with LOW FLOW AERATOR and SOLAR POWERED BATTERY
Disadvantages: designed to create hygienic, odor-free restrooms. Implementation and maintenance OPERATED SENSOR
• Foreign object could puncture ductwork guidelines must be understood prior to specifying this product. The installation of faucets with solar powered battery operated sensors and low flow
aerators’ (0.5 gpm), will save the owner money and water usage.
Advantages:
ALL AREAS • Reduced water and sewer cost Advantages:
• Qualify for USGBC LEED point • Reduced water and sewer cost
I. ENERGY RECOVERY VENTILATOR • Installation in new and retrofit situations • Qualify for USGBC LEED point
Energy recovery ventilation systems provide a controlled way of ventilating a facility • Payback around 1 ½ to 3 years • Installation in new and retrofit situations
while minimizing energy loss. They reduce the costs of heating ventilated air in the • Does not require freeze protection • Environmentally friendly
winter by transferring heat from the warm inside air being exhausted to the fresh (but • Does not require flush valve maintenance Disadvantages:
cold) supply air. In the summer, the inside air cools the warmer supply air to reduce • Does not require batteries, transformers or electronics • Educating janitorial staff on who replaces batteries
ventilation cooling costs • Environmentally friendly
V. LOW FLOW SHOWER HEADS
Advantages: Disadvantages: According to the Environmental Protection Agency, water use during showering or
• Save energy by utilizing recovered energy from the exhaust air stream • Educating janitorial staff on what products to use for cleaning bathing represents 17 percent of all indoor household water use. Water flow and water
• Recover about 70%–80% of the energy in the exhaust air • Odor or perceived odor related to decreased cleanliness pressure measurements determine the flow rate of a showerhead. Low flow showerheads
• Splashing of urine on men’s trousers during use (may not apply here) (less than 2.5 gpm and 80 psi) restrict the flow of water and reduce the amount of water
Disadvantages: • Reduced flow in waste water piping leading to deterioration of piping used during a shower. Low flow showerheads benefit the environment while lowering
• Installation cost higher • Cartridge changing costs the owner’s utility bills.
• Additional device required to prevent frost formation • Material expenses and stocking Advantages:
• More maintenance required (cleaned regularly) • Labor expenses and when to replace • Reduced water and sewer cost
• Who does the change out? FMS or janitorial? • Qualify for USGBC LEED point
• Cartridge disposal. HazMat or not?
• Installation in new and retrofit situations
III. LOW FLOW WATER CLOSET with SOLAR POWERED BATTERY OPERATED • Environmentally friendly
SENSOR • Easy to install
A pre 1994 flush-toilet or gravity-fed toilet uses 3.4 US gallons or 2.8 imperial gallons • Inexpensive
or more per flush. In 1992, the United States Congress passed the Energy Policy Act of
1992, which mandated that, from 1994, the common flush-toilet use only 1.6 US gallons Disadvantages:
of water per flush. Low flow water closets possess an effective flush volume of 1.28 US • None
Red & Green Scene Volunteer Design Charrette 2010
Plans are conceptual and subject to change