1. ATTENTION returning members. If you are coming here from the old forum for the first time, you will need to reset you password. However, we had an email problem getting password reset links set out to a lot of the email addresses. That problem is temporarily rectified but IF you still have an issue, email me direct at info@thebuildingcodeforum.com and I will give you a temporary password.
    Dismiss Notice
  2. Welcome to the new and improved Building Code Forum. We appreciate you being here and hope that you are getting the information that you need concerning all codes of the building trades. This is a free forum to the public due to the generosity of the Sawhorses, Corporate Supporters and Supporters who have upgraded their accounts. If you would like to have improved access to the forum please upgrade to Sawhorse by clicking here: Upgrades
    Dismiss Notice

2015 IECC - Adding exterior doors to existing building envelope

Discussion in 'Commercial Energy Codes' started by leothebuilder, Mar 6, 2017.

  1. leothebuilder

    leothebuilder Member

    Joined:
    Nov 19, 2013
    Messages:
    21
    Likes Received:
    0
    I have an existing building envelope that contains two tenancies.
    One tenancy is to be renovated and this involves two changes to the existing building envelope.
    One is where a double entry door is added into an existing run of storefront.
    The other is cutting an opening in the rear wall to install an exit door.
    Question is of how to address this per IECC 2015.
    Upgrade the whole building envelope just because of the addition of these two doors? (30 year old building)
    Or just apply prescriptive requirements to these two new doors?
    Or is the addition of the two doors minimal enough to consider that the building envelope is not being changed?
     
  2. mtlogcabin

    mtlogcabin Sawhorse

    Joined:
    Oct 17, 2009
    Messages:
    6,518
    Likes Received:
    429
    just apply prescriptive requirements to these two new doors
    The rear exit door is a safety issue and the double entry door is also improving the exiting

    C101.3 Intent.
    This code shall regulate the design and construction of buildings for the effective use and conservation of energy over the useful life of each building. This code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve this objective. This code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances.
     
  3. Francis Vineyard

    Francis Vineyard Sawhorse

    Joined:
    Jan 1, 2010
    Messages:
    2,802
    Likes Received:
    283
    did you adopt Chapter 5?

    2015 IECC
    C503.1 General.

    Alterations to any building or structure shall comply with the requirements of the code for new construction. Alterations shall be such that the existing building or structure is no less conforming to the provisions of this code than the existing building or structure was prior to the alteration. Alterations to an existing building, building system or portion thereof shall conform to the provisions of this code as those provisions relate to new construction without requiring the unaltered portions of the existing building or building system to comply with this code. Alterations shall not create an unsafe or hazardous condition or overload existing building systems.
     
  4. leothebuilder

    leothebuilder Member

    Joined:
    Nov 19, 2013
    Messages:
    21
    Likes Received:
    0
    Thank you,
    That would be my approach as well.
    All I need to do now is convince the plan reviewer this approach should be acceptable ;)
     
  5. steveray

    steveray Sawhorse

    Joined:
    Nov 25, 2009
    Messages:
    5,422
    Likes Received:
    546
    Prescriptive to the 2 doors....Unless it is a change of use or space conditioning....Then it would be 100% compliance as new...

    C101.4.4 Change in occupancy or use. Spaces undergoing
    a change in occupancy that would result in an increase
    in demand for either fossil fuel or electrical energy shall
    comply with this code.
    Where the use in a space changes
    from one use in Table C405.5.2(1) or (2) to another use in
    Table C405.5.2(1) or (2), the installed lighting wattage
    shall comply with Section C405.5.
    C101.4.5 Change in space conditioning. Any nonconditioned
    space that is altered to become conditioned space
    shall be required to be brought into full compliance with
    this code.
     
  6. leothebuilder

    leothebuilder Member

    Joined:
    Nov 19, 2013
    Messages:
    21
    Likes Received:
    0

    Yes....am applying chapter 5
    The occupancy does not change.....it was mercantile and remains mercantile occupancy.
     
  7. leothebuilder

    leothebuilder Member

    Joined:
    Nov 19, 2013
    Messages:
    21
    Likes Received:
    0

    Thank you....occupancy remains the same, no change. Space was and remains conditioned space.
     
  8. tmurray

    tmurray Sawhorse

    Joined:
    Jun 10, 2011
    Messages:
    1,215
    Likes Received:
    234
    We would have the doors meet the prescriptive requirements. I can't imagine someone forcing insulation upgrades on an entire wall if there are just a couple holes being cut into it.
     
  9. Meadowbend99

    Meadowbend99 Member

    Joined:
    Jan 30, 2017
    Messages:
    11
    Likes Received:
    0
    I have a similar project, but with a change of occupancy. They are converting an existing shotgun house to a mercantile space. They are wanting to replace the front door with a bigger door and replace a window in the back with another door. They are already planning to update the bathroom to ADA but did not want to replace all their windows, insulation, and electrical.
     
  10. steveray

    steveray Sawhorse

    Joined:
    Nov 25, 2009
    Messages:
    5,422
    Likes Received:
    546
    You would have to have your mechanical engineer do the calcs and prove you are not going to use any more energy....If it is true, shouldn't be too hard to prove...Otherwise you have to update everything...

    What's a shotgun house?
     
    #10 steveray, Jan 12, 2018
    Last edited: Jan 12, 2018
  11. Meadowbend99

    Meadowbend99 Member

    Joined:
    Jan 30, 2017
    Messages:
    11
    Likes Received:
    0
    They are replacing all the light fixtures in the house with LED's but do not plan to add any new electrical items. It will be a showcase for custom furniture and set up just like a house, so no new loads. My big concern is needing to replace all the really cool old windows which give the place character. Also, they are needing to add a ramp and we're having to relocate the a/c condenser unit.
     
  12. steveray

    steveray Sawhorse

    Joined:
    Nov 25, 2009
    Messages:
    5,422
    Likes Received:
    546
    If you are not adding any HVAC and you are reducing lighting usage, should be really easy....
     
  13. mp25

    mp25 Member

    Joined:
    Jun 2, 2016
    Messages:
    18
    Likes Received:
    3
    I always found the statement from C505 - Change of occupancy or Use section at odds with the statement from 503.1 ....alterations to an existing building, building system or portion thereof shall conform to the provisions of this code as those provisions relate to new construction WITHOUT requiring the unaltered portions of the existing building.... to comply with this code

    I have the commentary version at another location, so ill explore this a bit more next week, but to me it does not seem reasonable to force someone to change out all their windows, strip all the walls to add insulation, unless those walls will be opened up for other reasons.
     

Share This Page