I have a question about the mandatory provisions with international projects (Climate-1), in a tropical country where heating is not applicable and wall insulation is not typically being used. Though insulation helps improve the energy savings a little bit, it has always been a problem for the owners to agree because of the additional cost for a very minimal effect (usually
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
February 14, 2012 - 10:14 am
The insulation values in Table 5.5-X are prescriptive, not mandatory. They are already in fact prescriptive and available for trade-off. Only the items in Section 5.4 are mandatory.
Katherine Ann Resurreccion
Arcadis Philippines, Inc.159 thumbs up
February 14, 2012 - 6:10 pm
I guess I was just confused because section ASHRAE 90.1 section 5.4.1 references section 5.5 which references the Table 5.1-1 through 5.5-8. Now I can sleep well, thanks a lot for your immediate response Marcus!
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
February 15, 2012 - 9:59 am
Yep Section 5.4.1 can be a bit confusing but if you go to the referenced sections they are all about the requirements for the insulation itself not the quantity.
Gustavo De las Heras Izquierdo
LEED Expert181 thumbs up
November 14, 2023 - 7:16 pm
That's right Katherine,
As a matter of a fact, the credit requires the following:
As you can see, the projects need to comply ONLY with mandatory provisions of ASRHAE 90.1, and be more efficient than an energy model that follows the Appendix G. Consequently, you have plenty of flexibility to design your envelope and MEP systems. Some of the U-values might be more efficient than the baseline (other U-vaues may not be more efficient).... The same applies with MEP systems, for example some spaces might have a LPD be more efficient than the baseline (other spaces may not be more efficient)...etc.
I hope that helps!