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LEED for Homes v4 - California

LEED for Homes v4 - California. April 24, 2017 – San Ramon April 26, 2017 – Los Angeles. Agenda. Introductions Goals Review documents in folder Overview of workbook functionality Calculators Sampling Verification & Submittal Guidelines Next Steps. Goals.

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LEED for Homes v4 - California

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  1. LEED for Homes v4 - California April 24, 2017 – San Ramon April 26, 2017 – Los Angeles

  2. Agenda • Introductions • Goals • Review documents in folder • Overview of workbook functionality • Calculators • Sampling • Verification & Submittal Guidelines • Next Steps

  3. Goals • Understanding the workbook functionality • Identifying the new credits and changes in carry-over credits • Understanding of the calculators • Ability to utilize the V&S Guidelines • Understanding the changes in the certification submittal process

  4. Documents in Folder • Pre-requisite List • Summary of Changes • SOI Submittal Form • Regional Priority Credits • Water calculator step by step process • PV tool and step by step process • CEC PV calculator example • Minimum EP calculator (replaces the old EA 1 calculator for MR) • Waste calculator and step by step process

  5. Documents in Folder • Sampling Form Example • V&S Guidelines • Certification Submittal Checklist • LEED/CALGreen crosswalk from USGBC

  6. Workbook Functionality

  7. Water Calculator

  8. WATER REDUCTION CALCULATOR

  9. WATER REDUCTION CALCULATOR https://www3.epa.gov/watersense/water_budget/index.html

  10. Excel version of Tool https://www.epa.gov/sites/production/files/2017-02/ws-specification-waterbudget-tool-v1.01.xls

  11. Water Controls Projects can take a maximum reduction of 30% provided all landscape water use is controlled by a soil moisture sensor control system or a weather-based irrigation control system. To calculate the reduction for smart technologies, use the following equation:Final Landscape water requirement = LWR – (.30 X LWR)

  12. Water Controls Enter the Final LWR into the LEED calculator along with the baseline. Provide supporting documentation, such as manufacturer documentation, to verify the percentage reduction.

  13. Example 1

  14. Example 2

  15. PV Calculator

  16. PV Calculations Process • For projects using the CEC-PV Calculator, a conversion will need to be done to convert the building's TDV per square foot to TDV per site to align units with the CEC PV calculator. • Use the California TDV Conversion Calculator for this process.

  17. PV Calculations Process • Take the Energy Use kTDV/f2-yr from the CF1R

  18. PV Calculations Process • And input the data into the California TDV Conversion Calculator along with the Total Conditioned Floor Area of the building(s).

  19. PV Calculations Process • The Total at the bottom of the Calculator is the input needed for the LEED for Homes v4 Checklist Annual Energy Use credit.

  20. PV Calculations Process • Then input the Annual TDV kBtu per Site •  CEC-PV Calculator http://www.gosolarcalifornia.ca.gov/tools/nshpcalculator/download_calculator.php

  21. PV Calculations Process

  22. PV Calculations Process for Mid-rise • Perform process to end • Calculate for % savings • (Proposed TDV – PV TDV) / Baseline TDV - % Savings • Include this calculation with your EA pre-approval

  23. Minimum Energy Performance Calculator for Mid-rise • Must be used for all Mid-rise energy model pre-approvals • Include any PV calculation with your EA pre-approval documents

  24. Waste Calculator

  25. Reduction Calculator– not Diversion • Input only to White cells – do NOT overwrite any gray cells • Total Square Feet (MF) is calculated for you. Do not overwrite unless you are absolutely positive you have the correct number. • Enter bedrooms/units • Enter total waste from your waste report • Enter total recycled waste from your waste report Corporate Overview

  26. Waste Credit • Enter data from Calculator into gray cells (I know, right?) Corporate Overview

  27. Sampling

  28. USGBC Protocol • QA Application – is for the LEED for Homes Provider and is already in place for all projects • Green Rater application – Green Raters only need to fill this out once. The initial GR application will apply to all subsequent projects the Green Rater verifies • Project application – one is needed for each project. Included with this application is the client’s Quality Management Plan (QMP). The client is responsible for creating this document, not the Green Rater. The project sampling application is approved by the LEED for Homes Provider. Corporate Overview

  29. Quality Management Plan • Designate and train builder’s in‐field supervisors and their specific oversight and sign‐off responsibilities • Develop detailed scopes of work for each trade that are focused on quality‐critical tasks • Include scopes of work, and compliance requirements in all trade contracts • Plan and conduct kick‐off meetings for each project where performance goals and consequences of missing performance goals are clearly specified Corporate Overview

  30. Quality Management Plan - con’t • Provide appropriate training on green home building, inspections, and performance testing requirements to all trades before starting work on the project • Require trade and builder supervisor approval and sign‐off on all quality‐critical measures • Schedule the LEED for Homes Rater to be on‐site during the completion of each measure that requires testing in the first unit in each sample set. Corporate Overview

  31. Sample Set Size • Has the builder ever certified a LEED for Homes project with sampling? Please see Appendix D: Guidelines for Setting the Maximum Sample Set Size in the attachments. Multi Family Single Family Corporate Overview

  32. Expected Average Sampling Rate The Expected Average Sampling Rate is based on the number of units that are actually sampled per the requested sample set size. • It isn’t the minimum sampling rate in Appendix D. Multi-family building: A sampling rate of 10% or 1 unit out of every 10. The total number of units in the project is 53. 53 units – 5 (initial sample set) = 48 48 * 10% = 4.8 – round up to 5 5+5 = 10 10 units of the total 53 will be tested. 10/53 = 19% (0.18867) Your expected average sampling rate for your project is 19%. Corporate Overview

  33. Approved • Discuss the sampling protocol during your preliminary rating meeting with your client and work with your project team to determine how the units will be organized into sample sets. • Look at model differences, construction schedule, etc. You will also set the maximum sample set size based on your application. If you were approved for a 1 in 7 rate, then your maximum sample size is seven. LEED does not allow more than 10 units in a sample set for multi‐family buildings. Corporate Overview

  34. Initial Verification Requirements After sampling has been approved – but before you begin sampling – the following requirement must be met: At least five (5) for MF, or seven (7) for SF consecutive units must be individually and sequentially verified without a failure. • If you do have a failure, sampling may not proceed until 5 (MF) or 7 (SF) units have been verified without a failure. The initial verification requirements must be done for each phase of the project – pre‐drywall and final. • If there is a significant change to the project – construction crew, architectural designs, etc., the initial verification requirement must be repeated. Corporate Overview

  35. Organizing Units into Sample Sets All the units in your sample set must meet the following requirements: • Same stage of construction • Same sampling controls within a 30 calendar day period • Same basic design, layout and systems as it pertains to sampling controls applied • Your sample set for pre‐drywall does not have to be the same as final Corporate Overview

  36. Failures During the planning phase, you should have developed a contingency plan if problems should arise. If a failure happens during initial verification, correct the item and continue initial verification until 5 units are verified without failure. • First failure after initial verification: Correct failed items and continue verification on two (2) additional units from that sample set. Corporate Overview

  37. Failures • Second failure requires the Builder to complete a “root cause analysis” and Rater submits to DEG through LEEDTech. If the root cause analysis reveals failures that may have affected earlier sample sets, it is recommended, but not required, that the project re‐visit old sample sets and take remediative action. Problems must be corrected and the failed item tested for ALL units in that sample set. Verification team has the option of increasing the sample rate for the failed item or remove it from the sampling controls and verify for all units in the project. • Multiple failures is three or more failures within a 90‐day calendar period. Fill out the root cause analysis and submit to LEEDTech, correct and retest failed items in ALL units in sample set. If failures apply to same item, then it is removed from sampling and is verified at 100%. If failures on multiple items, initial verification must start over and maximum sample set size decreased (goes from 1 in 7 to 1 in 5). Corporate Overview

  38. Example Corporate Overview

  39. Verification & Submittal Guidelines

  40. Next Steps

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