Rockdale EST: Breaks Tradition by Necessity NC AWWA-WEA RALEIGH, NC

Transcription

1 Rockdale EST: Breaks Tradition by Necessity NC AWWA-WEA RALEIGH, NC Charles Kucherka, P.E. November 16, 2015

2 INNOVATION Obstacles to Innovation Lack of strong case for change Risk Aversion Lack of Trust

3 ROCKDALE, TEXAS Population: 5,851 (2010) Water Master Plan Existing 0.25 MG Alday Street EST

4 Site Plan Narrow Site Distance to Property Lines

5 Tank and Logo Selection Composite Elevated or Spheroid?

6 Logo Design Goal: Legibility at 0.4 miles Sign Design Guidelines US Sign Council Consider Location of Sign Distance to Sign Traffic Speed Font Type & Height Complexity

7 Tank and Logo Selection

8 Tank and Logo Selection

9 Tank and Logo Selection

10 Tank and Logo Selection Plans Need to Indicate Relative Size Logo Colors (No. of Colors) Location on Bowl

11 Lighting Options No Lighting Pole Mounted Lights Pedestal Mounted Lights Bowl Mounted Lights

12 Lighting Options Sketch vs Model Would a sketch convince you to try something innovative? Probably not. The different lighting options considered on Rockdale were analyzed using a lighting design software which would calculate the amount of illumination produced for each option and also provide a visual of the results in a simplified model

13 Lighting Considerations for Rockdale Fit within Site Constraints AND light up tank logo 5 to 10 foot-candles (FTC) on logo Illuminating Engineering Society Lighting Handbook Relux Lighting Software

14 Pole Mounted Lights for Rockdale 100 feet from Pedestal and 40 tall Two Spot Lights 400 watt pulse start metal halide lamps Results: 5 FTC at the logo Benefits: Easy Maintenance, Adequate Light Levels Downside: Space, Shorter Lamp Life

15 Pole Mounted Lights with a Restricted Area Poles within the Project Site Angle of Lights Almost Vertical Results: Max. 4 FTC on the logo Downside: Ineffective Light Levels, Both Bowl and Pedestal Lit, Shorter Lamp Life

16 Pole Mounted Example Poles within the Project Site Angle of Lights Almost Vertical Results: Max. 4 FTC on the logo Downside: Ineffective Light Levels, Pedestal Lit

17 Bowl Mounted Lighting You have options Fixtures Mounted on Top or both Top & Bottom of Bowl Different Lamp type HID Fixture or Linear LED HID Fixtures present a challenge Benefits of LED s Mounting Integral Fixture Lamp Life Power Supply Options

18 Rockdale s LED Bowl Mounted Lighting Fixtures 18 L x 3 W x 3 Tall 20 Circumference with 10 Fixtures Mounted 12 from Bowl 250W versus 1,840W

19 Lighting Evaluation Summary System Type Probable Construction Cost Benefits Negatives Pole Mounted HID Lights, Poles Located 100ft From The Tank Pole Mounted HID Lights, Poles Located Within The Project Site $10,000 $10,000 Linear LED Lighting $11, Proven method 2. Adequate light level 3. Easy maintenance 1. Easy maintenance 2. Within site boundaries 1. Long lamp life 2. Low maintenance requirements 3. Large energy savings 4. Adequate light level 1. Shorter lamp life compared to LED 2. Large offset distance 1. Inadequate light level 2. Shorter lamp life compared to LED 1. Mounting location 2. Unique installation

20 Engineer/Client/Tank Manufacturer Approval Design Team Calculations say it works Model says it works Client A little more challenging Clear Concept is Needed 3D Models and Renderings Tank Manufacturer Eh, it might work.

21 Better than a Sketch but are you Convinced? After the lighting calculations were produced (above), 3D renderings were also produced.

22 Mounting Options Evaluated Beware of Shadows

23 Mounting Options Evaluated

24 Rockdale s LED Bowl Mounted Lighting

25 Lighting Design

26 As Constructed

27 Adjusting the Lights

28 Innovation Applied Tank Mounted Lights (composite tanks) LED s Computer Aids and Renderings Open Communications Benefits to the City: The City was able to light their tank without additional land acquisition. The linear LED fixtures provide a long lasting, low energy consuming lighting system.

29 Innovation Applied Actual Commissioning Photo Final Nighttime Rendering

30 THANK YOU! Charles Kucherka, P.E. Phone: