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Housekeeping • All participants are muted. • This event will be recorded and available on http://dee.ne.gov/ • Type in “Video Events” (without quotes) in the search bar. • If you are having audio issues when connecting via computer, please call in via phone at: 1-415-655-0003 access code: 921 977 200 • Certificates will be available for those viewing the presentation live, not for those downloading after the presentation. They will be sent within the next week. 2
Questions • Please feel free to submit questions in chat throughout the presentation. They will be answered during specified breaks during the presentation. • We can stay on longer than the originally scheduled end time to answer questions. • An FAQ document will be uploaded to the video events page. 3
Why Energy Codes? • IECC addresses both residential and • Energy Codes set minimum efficiency commercial construction; IBC addresses all of the subsets of commercial construction requirements for new and renovated buildings, assuring reductions in energy use and emissions over the life of the building. Energy Codes are a subset of building codes, which establish baseline requirements and govern building construction. • Code buildings are more comfortable and cost-effective to operate, assuring energy, economic and environmental benefits. • The relationship between the IBC and the IECC • IECC addresses only energy topics • IBC addresses all topics (structural, plumbing, etc.) in One book 4
Structure of f the 2018 IE IECC • What are Commercial Buildings? • All buildings other than: Commercial Section • One- and two-family dwellings, Ch. 1 Scope and Application/ townhouses of any size and R-2, R-3, Administration and Enforcement R- 4 ≤ 3 stories • All buildings that are not “residential” Ch. 2 Definitions by definition; are “commercial” Ch. 3 General Requirements Ch. 4 Commercial Energy Efficiency Ch. 5 Existing Buildings Ch. 6 Referenced Standards Index 5
Commercial Buil ildings Can Be Complicated! Mixed Use Buildings Exempt Buildings • Treat the residential portion of the building • Buildings or portions of buildings that are under applicable residential code separated from remainder of building by building thermal envelope assemblies • Treat the commercial portion of the complying with C402 are exemp t from the building under applicable commercial code Envelope provisions if: • Code Official has the final authority • Peak design rate of energy < 3.4 Btu/h/ft 2 regarding compliance materials, software, or 1.0 watt/ft 2 of floor area for space worksheets, compliance options conditioning purposes, OR • Those portions or building that do not contain conditioned space, OR • Greenhouses 6
IE IECC Commercial Compliance Paths/Options Prescriptive Simulated Performance ASHRAE Section C402 – Envelope 90.1-2016 Section C407 – Total Building Performance Section C403 – Mechanical Section C402.5 – Air Leakage Section C404 – Service Water Heating Section C403.2 – Mechanical Systems Section C405 – Lighting Section C404 – Service Water Heating Section C406 – At Least One Required Section C405 – Lighting Mandatory Sections C406.6 - Dedicated Outdoor Air C406.2 - Eff. HVAC Performance System Building energy cost to be ≤85% of C406.7 - High Eff. Service Hot C406.3 - Reduced Lighting Power standard reference design Water C406.4 - Enhanced Lighting C406.8 - Enhanced Building Controls Envelope C406.5 -On-Site Renewable C406.9 – Reduced Air Infiltration Energy 7
When Lighting and Power Provisions Apply • Original Installed Lighting System in a Exceptions: New Building, Addition, or Tenant • Historic buildings Build-out • State or National listing • Existing Lighting System that is Altered • Eligible to be listed • Change in Occupancy that Increases • Alterations where less than 10% of the luminaires in a space are replaced and Energy installed interior power lighting is not • Change in Occupancy that requires increased less LPD as shown in the LPD tables • Lighting within dwelling units • Based on Nebraska Statute - • Where ≥ 75% of permanently installed • If the cost of the work being fixtures (except low-voltage) are fitted for and include high-efficacy lamps completed is 50% or more of the • Walk-in coolers, walk-in freezers, replacement cost of the building refrigerated warehouse coolers, and • In state-owned, state-funded refrigerated warehouse freezers comply buildings with C403.2.15 or C403.2.16 8
Covered Under Lighting and Power Provisions • Mandatory Interior Lighting Exception: Requirements • Residential dwelling units in commercial • Required Controls buildings that have a minimum of 75 percent of high efficacy lighting • Wattage/Efficiency Limits • Low-voltage lighting • Interior Lighting Power Allowances (watts/ft2) Definition of High Efficiency Lighting • Exterior Lighting Controls • Required Controls Compact fluorescent lamps, LED lamps, T8 or smaller diameter linear fluorescent lamps, or • Lamp Efficiency other lamps with an efficacy based on lamp • Exterior Lighting Power Allowances wattage (watts/ft2) Lamp Wattage Efficacy • Dwelling Electric Meters > 40 watts 60 lumens/watt • Electrical Transformers and Motors 15-40 watts 50 lumens/watt • Vertical and Horizontal Transportation < 15 watts 40 lumens/watt Systems and Equipment 9
In Interior Lighting Power Allowance Building Area Method Building Area Type LPD (w/ft) Automotive Facility 0.71 • Floor area for each building area Convention Center 0.76 type x value for the area Courthouse 0.90 • “area” defined as all contiguous Dining: bar lounge/leisure 0.90 spaces that accommodate or are Dining: cafeteria/fast food 0.79 associated with a single building area type as per the table Dining: family 0.78 • When used for an entire Dormitory 0.61 building, each building area type Exercise Center 0.65 to be treated as a separate area Fire Station 0.53 Office 0.79 (Partial Table) 10
In Interior Lighting Power Allowance Space-by-Space Method Common Space Types LPD (w/ft2) • Floor area of each space x Locker Room 0.48 Lounge/Breakroom value for the area In a healthcare facility 0.78 • Then sum the allowances for Otherwise 0.62 all the spaces Office • Tradeoffs among spaces are Enclosed 0.93 allow Open Plan 0.81 Parking Area, Interior 0.14 Pharmacy Area 1.34 (Partial Table ) 11
Additional In Interior Lighting Power Additional Interior Lighting Power Retail Area 3 = the floor area used for the sale of Allowance = 1000 watts + furniture, clothing, cosmetics and artwork (Retail Area 1 x 0.45W/ft2) Retail Area 4 = the floor area used for the sale of (Retail Area 2 x 0.45W/ft2) jewelry, crystal, and china. (Retail Area 3 x 1.05W/ft2) (Retail Area 4 x 1.87W/ft2), Where: Retail Area 1 = the floor area for all products not listed in Retail Area 2, 3 or 4 Retail Area 2 = the floor area used for the sale of vehicles, sporting goods and small electronics Charlstonlights.com 12
Additional In Interior Lighting Power Add’l Interior Lighting Power Exceptions: • Other merchandise categories are permitted to be included in Retail Areas 2 through 4 above, provided that justification documenting the need for additional lighting power based on visual inspection, contrast, or other critical 1000Bulbs.com Blog display is approved by the code official • For spaces which lighting is specified to be installed in addition to general lighting for the purpose of decorative appearance or for highlighting art or exhibits, provided that the additional lighting power is < 0.9 W/ft2 in lobbies and < 0.75 W/ft2 in other spaces 1000Bulbs.com Blog 13
Proposed Connected Lighting Calculation Total Proposed Lighting Power wattage must be calculated in accordance with Eq. 4-10 TCLP = [LVL + BLL + LED + TRK + OTHER] Home Depot Sum the wattage of all • TCLP = total connected lighting power (watts) proposed connected lighting • LVL = labeled wattage of luminaires connected directly to power building power • This must include all lighting that is • BLL = wattage of the ballast or transformer part of the design for the space • LED = wattage of LEDs with either integral or remote drivers including: • Overhead lighting • TRK = wattage of lighting tracks, cable conductors, rail • Task lighting conductors, and plug-in busways specified wattage of the luminaires but not less than 8 W per linear foot OR the • Decorative lighting wattage limit of other permanent current-limiting devices • Compare values; Proposed on the system OR wattage limit of the transformer Wattage must be less than or equal • OTHER = the wattage of all other luminaires and lighting to Allowed Wattage sources not covered previously and associated with interior lighting verified by data supplied by the manufacturer or other approved sources 14
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