Technical Bulletin #16

CASE STUDY:  Lamtec White Facings Reduce Lighting Investment Cost and Annual Electricity Costs

Objective:        Compare the lighting fixture requirements and energy costs using Lamtec

                      white metal building facings versus a conventional galvanized metal roof deck.

Project:           Two (2) industrial facilities totaling 420,000 ft², completed in 2010

             Building 1- 260,000ft² faced with WMP-50 in the roof

             Building 2- 160,000ft² faced with WMP-UV HD in the roof

             Interior precast walls painted with eggshell off white finish

Specifications:   Approximately 30 foot candles maintained illumination

  T5HO high bay 6 lamp 324 watt wide distribution fluorescent

  light fixtures with up-lighting

  Ceiling height varies between 25 and 32 feet

  Lighting installed at 22 ft. above finished floor

Light               WMP-50 and WMP-UV HD light reflectance is 85%*  

Reflectance:     The plain galvanized metal roof deck light reflectance is 62%** 

Summary:

Calculations based on:

Hours of operation/year = (260 days/year)*(24 hours/day) = 6240 hours/year

Electricity Cost = $.11/kW hour

                *The light reflectance of Lamtec facings is provided on the specification sheets available at www.lamtec.com

                **Light reflectance determined in testing by Atlas Services Group on May 3^rd, 2011.

Conclusions:

·         Lamtec facings reduced the number of lighting fixtures required by 20% in Building # 1 and 18% in Building # 2; reducing the total investment cost in lighting fixtures.

·         Lamtec facings reduced the annual lighting cost by $28,994/year in Building #1 and $15,288/year in Building # 2.

·         Lamtec facings offer exceptional benefits for their outstanding light reflectivity when compared to a plain galvanized metal roof deck.

·         As with any project, Lamtec recommends consulting your design engineer for your specific design criteria and lighting calculations.