Draft Proposal CA-10
This concept has been developed by the DOE Building Energy Codes Program (BECP) as a possible code change proposal to the Commercial provisions of the 2012 International Energy Conrvation Code (IECC). Interested parties are asked to submit any and all comments on DOE's initial concepts and draft code change proposals. For instructions on submitting comments, visit:
Envelope Commissioning (CA-10)gpm>special是什么意思
Objective: Add provisions covering commissioning of the building envelope.
Suggested Code Change Proposal
Revi Sections C408 and C408.1 and add a new Section C408.2 as follows:
C408 SYSTEM BUILDING COMMISSIONING
C408.1 General. This ction covers the commissioning of the building thermal envelope in Section
C402, building mechanical systems in Section 403 and electrical power and lighting systems in Section
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C408.2 Building thermal envelope commissioning and completion requirements. Prior to the conduct of the final inspection, a registered design professional shall provide evidence of building thermal envelope commissioning and completion in accordance with this ction.
Construction documents and specifications shall clearly indicate the provisions for commissioning and completion of the building thermal envelope in accordance with this ction. Copies of all documentation verifying tho provisions have been carried out shall be given to the building owner by a registered design professional and made available to the code official upon request.
C408.2.1 Commissioning plan. A commissioning plan shall be developed by a registered design professional and shall include the following items:
1. A narrative description of the activities that are to be accomplished during each pha of
commissioning including the personnel intended to perform each activity.
2. A listing of the specific products, components, asmblies and conditions associated with the
building thermal envelope to be evaluated as provided in Section C408.2.2 and the description of the means by which they will be evaluated.
3.Items to be tested, conditions under which the testing will be performed, the standards ud as a
basis for the tests and the measureable criteria for performance.
C408.2.2 Building thermal envelope commissioning and testing. The commissioning plan shall include the following items associated with the building thermal envelope.
1.Confirmation of the installation and application of foundation sub-soil drainage, damp-proofing
and water proofing to ensure that below grade components of the building thermal envelope will not be adverly affected by water leaking intrusion from the building exterior.
2.Flashing and aling at all locations where different products, components and asmblies
associated with the building therm al envelope are connected or proximate to one another and
provide aling against the intrusion of snow, ice and rain.
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3.Systems associated with diversion of snow, ice and rain from impacting the building thermal
envelope and their ability to perform their intended function.
4.Protection of insulation products associated with the building thermal envelope that are expod
to natural or manmade conditions that can impact their long term performance.
5.The proper application, installation and operation of any required fenestration shading devices or
systems.
打单词游戏6.Confirmation that the air barrier required by Section C402.4.1.2 exists in the building. Where
confirmation is through an air leakage test of the building the results of the test, the conditions
under which the test was conducted and who performed the testing shall be required as part of the plan.
C408.2.3 Preliminary commissioning report. A preliminary report of the means employed in commissioning the building thermal envelope and the obrved results shall be completed by a registered design professional and provided to the building owner. This report shall be identified as “Preliminary Building Therma l Envelope Commissioning Report” and shall provide an itemization of deficiencies found during commissioning as required by this ction that have not been corrected at the time of report preparation.
C408.2.3.1 Acceptance of report. Buildings, or portions thereof, shall not be eligible for final
inspection until such time as the code official has received a letter of transmittal from the building owner acknowledging that the building owner has received the preliminary commissioning report. In carrying out this activity the code official shall be permitted to receive a copy of and review the report prior to conducting the final inspection.
C408.2.4 Documentation. The construction documents shall specify that the documents described in this ction will be provided by a registered design professional to the building owner within 90 days of the date of receipt of the certificate of occupancy.cosby
pacsC408.2.4.1 Drawings. Construction drawings shall include the location of each component or
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asmbly associated with the building thermal envelope, the manner in which they were constructed, performance data on the components and asmblies associated with the building thermal envelope, and the details to be applied in determining compliance with the air leakage requirements in the code.
C408.2.4.2 Manuals. An operating and maintenance manual shall be provided to the building owner by a registered design professional that provides a narrative about how the components of the
building thermal envelope are intended to function and actions necessary to maintain tho functions.
C408.2.4.3 Air leakage test report. A written report shall be provided to the building owner by a registered design professional describing the activities and measurements completed to verify
compliance with Section C402.4.
C408.2.5 Final commissioning report. A “Final Building Thermal Envelope Commissioning Report” shall be delivered to the building owner by a registered design professional that includes the results of air leakage testing pursuant to Section C402.4, disposition of deficiencies found during air leakage
testing and the manner in which they were corrected, and findings associated with the thermal integrity of the building thermal envelope bad on an inspection by the registered design professional.
Reason: The value of commercial building commissioning has been documented and was included for mechanical and lighting systems during the prior code development cycle as a new Section 408 in the IECC. Tho provisions are intended to ensure t hat the building has been “tuned” prior to occupancy, to make sure it is properly operating and capable of continuing to operate properly. This code change proposal extends the value and validity of the code provisions becau there is little value in requiring something be provided in a building if it is not properly installed and ready to perform its intended function.
给幸福一个机会
The International Green Construction Code (IgCC) contains provisions for commissioning that include the envelope of the building. Tho are intended to ensure that the components associated with the envelope are installed in such a way that they can perform their intended function. The commissioning of the building thermal envelope is the next logical step in enhancing the value of the IECC. As previously noted, why require something in the code if there is no activity to make sure it is properly installed and can perform its intended function? This is a reasonable minimum requireme
nt for all buildings, not just green buildings.
This propod code change is modeled on the provisions in the IECC for mechanical system commissioning, the envelope-related provisions in the IgCC, and the criteria in Section C402 of the IECC that are considered important to ensure that the building thermal envelope will perform as intended and, as such, addresd in any commissioning activity.
英语日记带翻译As with the provisions in Section C408.2 of the 2012 IECC for mechanical systems, the propod change provides criteria for development of a commissioning plan, a report on commissioning, acceptance of the report, documentation, and then a final report. Also included in propod Section C408.2.2 are tho items covered in Section C402 that are considered important to address in a commissioning activity (foundation wall moisture control, flashing and aling against the elements, protection against intrusion of water, snow and ice, protection of expod insulation, proper installation and operation of shading devices, and confirmation that air leakage issues have been addresd).
Cost Impact: There is a cost impact associated with this propod change to the degree that the commissioning activity is not now being performed anyway and would now have to be performed and
documented. There should also be a decrea in costs to the degree that such commissioning reduces the burden on state and local government in enforcement of the code as commissioning rves to ensure and document compliance with the code. Moreover, the operation and maintenance costs of a building that is so commissioned would logically be less than one that is not commissioned. Without commissioning to ensure the code-required insulation and infiltration reduction systems are in place, the cost effectiveness of other energy code provisions is in jeopardy. A study of 643 commissioned building in 26 states found that new building commissioning had a median payback of 4.2 years (v/2009-asssment.html).
