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What It Means to You Presented to IESNA Houston Chapter by Kapil Upadhyaya, Colley Hodges, and Alfonso E. Hernandez


Timeline of transition to v4

2013

2014

LEED 2009 registration ends June 2015

LEED 2009 PUBLIC COMMENT Public comment period ended March 31

2015

LEED v4 LEED v4 available fall 2013, pending successful balloting


Stated goals of v4 MORE DIFFICULT 78% of the points are harder than LEED 2009


Stated goals of v4 MORE PERFORMANCE-BASED They’re not giving credit for just planning to do something anymore.


Stated goals of v4

GREATER TRANSPARENCY Manufacturers should disclose environmental impacts and toxic chemicals in materials.


Stated goals of v4 SHIFT TOWARD LIFECYCLE PERSPECTIVE


Stated goals of v4 MEASURING COMPREHENSIVE ENVIRONMENTAL IMPACTS


Stated goals of v4

REDUCED DOCUMENTATION


Overview Virtually every credit has changed.


Overview There have been 6 public comment periods.

The first one started in Nov. 2010!


Properly Vetted?


Kirksey Case Study Comparing performance of a suburban office building under LEED 2009 vs. v4


Case Study Conclusions • A suburban LEED 2009 Gold office building is likely to be equivalent to LEED v4 Certified. • It will lose about 18 points. • It will also cost about 0.3% more in construction cost and LEED-related soft costs will be 1.7x higher


Case Study Conclusions What about getting Gold in v4? • It will add ~ 1% to construction cost • LEED-related soft costs will be 2.6x higher.


Caveats • Our figures are rough estimates! • Every project is slightly different– AND every rating system is slightly different. • v4 is so different from 2009 that exact 1 to 1 comparison is impossible


Today’s focus:


INTEGRATIVE PROCESS


Integrative Process INTEGRATIVE PROCESS

No current equivalent in LEED 2009.

Credit language: During Schematic Design, analyze at least 2 strategies for many building conditions including • Massing & orientation • Envelope Attributes (shading, glazing) • Lighting – assess interior surface reflectance values and lighting levels in occupied spaces • Plug and Process Loads • Water demand (process, indoor, outdoor, etc.)


2009

v4

Total Points Available

20 points

20 points


2009

v4

Case Study Building

5

points

0

points


2009

v4

Total Points Available

8

points

11

points


2009

v4

Case Study Building

6

points

4

points


SiteCredit: NC Assessment Light pollution

Uplight & light trespass requirements


Site Assessment Revised Lighting Zones Lighting zones determined by: IES and International Dark Sky Association Model Lighting Ordinance (MLO) User Guide


Site Assessment Two Compliance Paths Based on those lighting zones, determine compliance using ether‌ Option 1: backlight-uplight-glare (BUG) method Option 2: calculation method


Site Assessment Option 1: BUG Method


Site Assessment Option 1: BUG Method If less than 2x mounting height to property line, backlight must face property line


Site Assessment Option 1: BUG Method Lighting boundary can be moved 5 feet beyond property boundary into certain public areas (plazas, parking lots, walkways)


Site Assessment Option 1: BUG Method Lighting boundary can be moved to the midpoint of adjacent roadways


Site Assessment Option 1: BUG Method No lighting boundary necessary for adjacent properties with same owner and lighting zone


Site Assessment Option 2: Calculation Method Do not exceed prescribed amounts of total lumens emitted above horizontal and vertical illuminances at the lighting boundary


2009

v4

Total Points Available

10 points

11

points


2009

v4

Case Study Building

7

points

5

points


2009

v4

Available:

Available:

14

14

points

points


2009

Typical CS Office Bldg:

6

points

v4

Typical CS Office Bldg:

7

points


Credit Changes 2009

v4


Major Trends Rewarding Disclosure

2009 Only performance is rewarded

v4 Rewards disclosing product information


Path to Compliance Environmental Product Declarations


Credit Requirement Raw Material Reporting


Credit Requirement Material Ingredient Reporting


Major Trends 3rd Party Certification

2009

v4

Manufacturer reports

3rd party certification

receive full credit

for full credit


Path to Compliance 3rd Party Certification


Path to Compliance Health Product Declarations


Path to Compliance Producer Responsibility Programs


LEED for Healthcare Prerequisite and Credit: PBT Source Reduction - Mercury


Mercury Reduction New Construction: No mercury-containing thermostats, switching devices, or other building systems. Install low-mercury lamps. Renovation: Phase out mercury-containing products and upgrade current mercury-containing lamps to high efficiency, low-mercury, or mercury-free.


Mercury Reduction No preheat, T-9, T-10, or T-12 fluorescents or mercury vapor HID lamps. No exit signs with mercury and no probe-start metal halide HID lamps in any interior spaces.


Mercury Prerequisite

Maximum Mercury Content of Lamps


Mercury Credit Criteria for Rated Life of Low-Mercury Lamps


2009

v4

Available:

Available:

37

33

points

points


2009

v4

Typical CS Office Bldg:

Typical CS Office Bldg:

20

10

points

points


Minimum Energy Performance 2009

v4


Minimum Energy Performance 2009 ASHRAE90.1-2007

v4 vs.

ASHRAE 90.1-2010

26% more stringent on average


Minimum Energy Performance 2009

v4 16.8%

ASHRAE Baselines for Sample Office Tower LEED 2009

LEED v4


Minimum Energy Performance Pre- requisite


Minimum Energy Performance Pre- requisite

2009

v4 16%

10%

2009 Pre-requisite

2%

v4 Pre-requisite

9.4% more difficult

20 storey core & shell

LEED 2009

LEED v4


Minimum Energy Performance Case Study Office Tower - 63%WWAR with longer facades facing East & West - Thermal breaks on Curtain Wall - Frit pattern on East & West - Fins on East faรงade - Tenant Lighting Power Density = 0.8W/sf - Garage Lighting 0.1W/sf - Daylight harvesting in Garage - Right sized chillers with variable flow - Premium efficiency motors on pumps & fans - Demand control ventilation - Energy Recovery


Optimize Energy Performance

2009 22.1% 9 points

LEED 2009

Case Study Office Tower


Optimize Energy Performance

2%=Pre-requisite

v4 6.2% better but Noncompliant

LEED v4

Case Study Office Tower


Optimize Energy Performance


Optimize Energy Performance Mandatory:

-Office LPD=0.9W/sf (Reduced from 1.0W/sf)


Optimize Energy Performance Mandatory:

-Office LPD=0.9W/sf (Reduced from 1.0W/sf) Tenant Requirement in Lease


Optimize Energy Performance Typical offices achieve 0.9W/sf with T5 and T8 fixtures, Parabolic reflectors

4.6% savings


Optimize Energy Performance Mandatory:

-Garage LPD=0.25W/sf


Optimize Energy Performance Mandatory:

-Garage LPD=0.25W/sf eg.0.20W/sf with Metal Halides


Optimize Energy Performance 0.1W/sf with Fluorescent Lighting

0.08W/sf with LEDs

6.5% savings


Optimize Energy Performance Mandatory:

-Exterior lighting = 0.10W/sf Reduced from 0.15W/sf eg. 0.13W/sf with Metal Halides vs. 0.08W/sf LED


Optimize Energy Performance Mandatory: -Parking Garage occupancy sensor


Optimize Energy Performance


Optimize Energy Performance


Optimize Energy Performance Mandatory: -Daylight harvesting for WWAR≥40% in Parking Garage

Opening ≤ 4’0”


Optimize Energy Performance Mandatory: -Faรงade lights off between 12am-6am


Optimize Energy Performance Mandatory:

- Chillers: Efficiency - Transition lighting in garage - Enclosed garage ventilation


Optimize Energy Performance

2%=Pre-requisite

LEED v4

v4

v4

6.2% better but Noncompliant

13.7% better & 6 points

Case Study Office Tower

Case Study Office Tower + Mandatory Requirements


Optimize Energy Performance 2009

v4 1. Occ. Sensor required in Garage ~$40,000 to $100,000, <2yr payback 2. Tenants to lower lighting by 10%

9

points

6

points


Next on Lighting Efficiency

95% heat

85% heat

85% heat


Next on Lighting Efficiency


Next on Lighting Efficiency


Next on Lighting Efficiency


Next on Lighting Efficiency

Source: Novel Concepts Inc. Microelectronic Thermal Management


Fundamental Commissioning Pre- requisite

2009 OPR-BOD, Cx in CDs Cx Plan, Verify installation, testing & results Cx report

v4


Fundamental Commissioning Pre- requisite

2009

v4

OPR-BOD, Cx in CDs Cx Plan, Verify installation, testing & results Cx report

+ (Peer) Review Exterior Enclosure Design

+ O&M Plan (schedules, set points, sequence of operations, lighting levels, OA requirements, description)


Enhanced Commissioning 2009

v4

CDs, Submittals Systems Manual, Training, Testing 10 mo. Review, Ongoing Cx Plan

3

points

3

points


Enhanced Commissioning 2009 CDs, Submittals

v4 + Monitoring in Cx Plan

Systems Manual, Training, Testing 10 mo. Review, Ongoing Cx Plan

3

points

3+1

points

point


Demand Response

- Contractual agreement with Centerpoint for at least 1 year - System design for fully automated DR event - 10% peak shaving

2

points


Demand Response 1 Scheduled and 4 Unscheduled Curtailments Curtailment period = 1~3 hours June to Sept, 1 to 7pm, weekdays Incentive = $40 per kW Sample Office Tower 10% = 257 kW ($10,280)


Measurement & Verification 2009

3+3=6 Points No more Measurement & Verification

1 YEAR of Post-Occupancy monitoring


Building-Level Energy Metering v4

0 Points Pre- requisite Building Level data to be collected

5 year commitment to share data with USGBC, 1 month intervals


Advanced Energy Metering v4

1 Point Separate submeters per source, if 10% or more of the total annual consumption of the building. 1 Electricity & 1 Chilled Water submeter per floor / per tenant.


Commercial Interiors

2009

v4


EAp1-Minimum Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Density

2009

ASHRAE 90.1 2007 + 10%


EAp1-Minimum Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Density

2009

ASHRAE 90.1 2007 + 10%

v4

ASHRAE 90.1 2010 + 3% (if Opt. 1 Simulation) + 5% (if Opt. 2 Prescriptive)


EAp1-Minimum Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Density

2009

v4

+16.2% ASHRAE 90.1 2007 ASHRAE 90.1 2010 In average, 90.1 2010 LPDs are 16.2% better than 90.1 2007


EAp1-Minimum Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Density


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Reduction

2009 1-5 Points 1-3 Points 5-10 points HVAC 1-4 points Equip. & Appl.

v4


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Reduction

2009

v4

1-5 Points 1-3 Points

1-25 Points (total EAc1 combined HVAC, Equipment, Lighting Power & Lighting Control) If Option 1 Simulation


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Reduction

2009

v4

1-5 Points 1-3 Points

1-25 Points (total EAc1 combined HVAC, Equipment, Lighting Power & Lighting Control) If Option 1 Simulation Strategies can be integrated through a dynamic energy model


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Reduction

2009

v4

1-5 Points 1-3 Points

1-16 Points (total EAc1 combined HVAC, Equipment, Lighting Power & Lighting Control) If Option 2 Prescriptive


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Power Reduction

2009

v4

1-5 Points 1-3 Points

1-16 Points (total EAc1 combined HVAC, Equipment, Lighting Power & Lighting Control) If Option 2 Prescriptive Strategies can be broken down per category.


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Light Power Reduction

2009

Range 15% to 35%

1-5 points

Option 2 Prescriptive


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Light Power Reduction

v4

2009

Range 15% to 35%

1-5 points

Range 10% to 25%

Option 2 Prescriptive

1-4 points


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Light Power Reduction

LEED will be more Performance based Therefore Dynamic Simulations get more points than Prescriptive Measures

4%= 4 pts 5%= 6 pts 6%= 8 pts 7%=10 pts 8% =11 pts 9% =12 pts 10% =13 pts 11% =14 pts 12% =15 pts

13%= 16 pts 14%= 17 pts 15%= 18 pts 16%= 19 pts 17%= 20 pts 18% = 21 pts 20% = 22 pts 22% = 23 pts 24% = 24 pts

28% = 25 pts Option 1 Simulation

Envelope = 2-4 pts HVAC = 2 pts Int. Lighting Power = 1-4 pts Int. Lighting Controls = 1-2 pts Equip. & Appliances = 1-2 pts ENERGY STAR = 1-2 pts

TOTAL MAX= 16 pts Option 2 Prescriptive


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Control

2009 Daylighting Controls (switch or dim) for R.O. daylit areas

1 1

Daylighting Controls for 50% of the lighting load

1

Occupancy Sensors 75% of the connected light load

1-3 points

Option 2 Prescriptive


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Control

v4

2009 Daylighting Controls (switch or dim) for R.O. daylit areas Daylighting Controls for 50% of the lighting load Occupancy Sensors 75% of the connected light load

1-3 points

1

Daylighting Controls in all R.O. daylit areas for at least 25% of the connected light load

1

Occupancy Sensors 75% of the connected light load

Option 2 Prescriptive

1-2 points


EAc1-Optimize Energy Performance Commercial Interiors â&#x20AC;&#x201C; Lighting Control Lighting Controls: Additional control required between on & off: Either switching or dimming Exception: Corridors, Mech. Rooms, Lobbies. Restrooms, Stairways, Storage Rooms, Spaces With Only One Luminary <100W, & All Spaces With <0.6W/Sf

Occupancy sensor required in: Classrooms, Lecture Halls, Conference, Training Rooms, Lunch/Break Rooms, Storage, Copy Rooms, Office<=250sf, Restrooms, Dressing/Locker

As per ASHRAE 90.1 2010


2009

v4

Available:

Available:

12

10

points

points


2009

v4

Typical CS Office Bldg:

Typical CS Office Bldg:

10

7

points

points


2009

v4


Controllability of Systems: Lighting 2009

1 Point Individual Lighting Control for >90% of Regular Occupants

This Credit is only for NC & Schools.. NO CS!


Interior Lighting: Lighting Control, Lighting Quality 2009 v4

1-2 Points


Interior Lighting: Lighting Control, Lighting Quality 2009 v4

1 Point

Lighting Control:

Individual Lighting Control for >90% of occupants and Lighting fixture to have 3 levels (on, off, midlevel) Midlevel to be 30% to 70% of the max. illumination level (not including daylight)


Interior Lighting: Lighting Control, Lighting Quality 2009 v4

Lighting Quality:

1 Point

•For all ROA, fixtures of less than 2500 cd/m2 (except wallwash fixtures). •Light sources with a Color Rendering Index (CRI) of >80. •For 75% of the connected lighting load, use fixtures with >24000 hour rated life. •Direct-only overhead lighting for <25% of ROA


Interior Lighting: Lighting Control, Lighting Quality 2009 v4

Lighting Quality:

1 Point

•LRVs for 90% of ROA: 85% ceilings, 60% walls & 25% floors (NC & Schools only). •If furniture is included, LRVs to be 45% work surfaces & 50% movable partitions. •For 75% of the ROA, wall surface illuminance/average work plane ratio not to exceed 1:10. Also ceiling surface illuminance/average work plane ratio not to exceed 1:10.


Daylight & Views - Daylight 2009

>75% of Regularly Occupied Areas Exemplary Performance at 95% of ROA

1 Point


Daylight 2009

v4

You could get up to 3 points!!


Daylight 1) Simulation (Spatial Daylight Autonomy)

99% sDA 7% ASE

3 Points if 75% of the ROA has a sDA of >300 lux 2 Points if 55% 10% Annual Sunlight Exposure


Daylight 2) Simulation (Illuminance Sept 21st +/- 15 days and March 21st +/- 15 days)

9 am

3 pm Dark Areas

Within Range 300-5000 lux

2 Points if 90% of the ROA is >300 lux on the chosen sim. date 1 Point if 75% of the ROA is >300 lux on the chosen sim. date

Glare Points


Daylight

2009 LRVs: 70% ceilings, 40% walls & 20% floors.

v4 LRVs: 80% ceilings, 50% walls & 20% floors.


Daylight

LEED will be more Performance based Bye bye Prescriptive! (You will not be missed)


Daylighting & Lighting Design RADIOSITY

Source: Erik Olsen, OWP/P Engineers & Michael Iversen, MRIA Overview of Simulation, IBPSA, USA


Daylighting & Lighting Design RAY TRACING

VIRTUAL SCREEN

Source: Erik Olsen, OWP/P Engineers & Michael Iversen, MRIA Overview of Simulation, IBPSA, USA


Daylighting & Lighting Design •Desktop Radiance (modeler Ecotect or AutoCAD) T •AGi32 •DIAlux

http://www.agi32.com/Products/AGI32/sample_pagebuilder_layout.pdf

•Lumen Micro •Daysim (modeler Ecotect, Sketchup (openStudio) or Rhino) •Relux

http://www.lighting-technologies.com/Products/LumenMicro/LM.htm http://www.designplan.co.uk/technical/relux.asp

•Lightscape •FormZ RadioZity •DIVA (modeler Rhino) •3D Studio MAX

http://www.formz.com/gallery/user_page.php


Daylighting & Lighting Design

See Daylight Availability and Dark Areas at a given time

Identify points of Glare


Daylighting & Lighting Design

Alternate Solar Control with Daylight and Lighting Design


Daylighting & Lighting Design

Assess Reflectivity of Surfaces


Daylighting & Lighting Design

Alternate w/ Lighting Design


Alternate w/ Lighting Design


Alternate w/ Lighting Design


What can you do?


Ballot voting

Voted on by USGBC members who opted in to the consensus body (opt-in period ended in April).

Ballot period will be in summer 2013.


Commenting:

This is the primary forum for general comments and discussion.


Commenting:


Commenting:


Questions?


LEED V4: What It Means to You