Q_A_W50S9B20Q0026.pdf

W50S9B-20-Q-0026, Exterior LED Lighting Questions and Answers

25 August 2020

The following are the questions received in connection with W50S9B-20-Q-0026. Following each question is the Government’s official response.

Q1. What is the minimum foot-candle level per light fixture?

A1. For Zones A & B, a minimum of 20 foot candles, 45,590 lumens is required. For Zone C, a minimum of 20 foot candles, 30,776 lumens

Q2. Statement of Work (SOW), paragraph 7.1.c states that the lights shall illuminate Zone D.

However, the Fixture Schedule does not have fixtures on the east side of the building. Is the intent for the most easterly fixture mounted to north and south side of the building to illuminate Zone D?

A2. Yes, if possible

Q3. Will as-built electrical drawings be provided?

A3. As-built electrical drawings are not available. However, the 100% design drawings for lighting and power plan is provided as an attachment to the revised SOW. During construction of the facility, the government ensured the design plans were followed.

Q4. SOW, paragraph 7.1.a requires the installation of “switch or switches.” How many switches is required?

A4. 1 switch

Q5. SOW, paragraph 7.1.a requires an interior switch and paragraph 7.1.b requires the lamps to be photocell capable. Is the intent for the lights to be photocell or manual switched?

A5. The intent is to have a photocell with an override (switch).

Q6. How far is the electrical panel from the lights to be installed?

A6. Approximately 50 ft.

Q7. Is there a specific height the lights need to be mounted at?

A7. A minimum of 14 ft from the ground. Light fixtures are required to be uniformed and able to illuminate the areas specified.

Q8. What is the height of the building?

A8. Approximately 16 ft.

R. FRANK HARTZELL, SMSgt, VaANG Contracting Officer