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Base HVAC System for a Data Center / Server Room ASHRAE 90.1- 2007

NC-2009 EAp2: Minimum Energy Performance
posted by Fatou Jabbie, | BSc. Comp. Sci. | MSc. Sustainability Management | LEED AP BD+C on Jul 12, 2019, 3:54 pm

  • Modeling a Data Center: 1,682.34 sq. ft.
  • Call Center: 8,389 sq. ft.
  • Offices: 4,600 sq ft.
  • Common Spaces/Other: 17,126

The data center has an IP load...

Entryway system extends into elevator

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Angela Barreto on Jul 12, 2019, 5:25 pm


we have a project with a complying entryway system at ground level. However, the LEED reviewer has pointed out an entryway system is also required at the elevator lobby in our...

REACH registration number

NC-v4 MRc4: Building product disclosure and optimization - material ingredients
posted by Francesco Passerini on Jul 8, 2019, 5:53 am

In safety data sheets the calcium diformat is labeled with REACH registration number 01-2119486476-24-xxxx

Therefore I would think that it is included in the REACH lists but in the REACH...

Last reply: Natalia Kopocinska, Jul 15, 2019, 7:07 am

No Existing and New Fixtures

CI-v4 WEp1: Indoor water use reduction
posted by Simon S. on Jul 11, 2019, 2:58 am


Our project is a expansion commercial office, no existing and new fixtures are within the LEED project scope. Should we use the Special Circumstances to meet WEp1 requirement?...

Last reply: Simon S., Jul 14, 2019, 10:40 pm

Any reason NOT to switch from v4 to v4.1 for the BPDO EPD credit?

NC-v4 MRc2: Building product disclosure and optimization - environmental product declarations
posted by Renee Shirey on Jul 12, 2019, 9:59 am

I looked at the changes, and I don't see a reason why the switch to v4.1 would not be of benefit.  Am I missing anything, where it could potentially create a problem for a project?

Last reply: Wes Sullens, Jul 14, 2019, 1:43 pm

CI-v4 LTc3- Access to quality transit- Question about "Bus Rapid Transit"

CI-v4 LTc3: Access to quality transit
posted by on Jul 11, 2019, 6:27 pm

If a lane in a public street is signed with the wording "Bus Lane Ahead" and "Bus Lane" (those phrases are written on the pavement) but cars are not technically prohibited from driving into that...

Last reply: David Posada, Jul 12, 2019, 3:17 pm


LEED Rating System Selection
posted by Tracy Marquis on Oct 28, 2018, 7:24 pm

We are renovating approximately 13,000 SF (with is about 50% of the first floor) of a 177,000 SF building.  The renovation includes interior square footage as well as some major envelope work at...

Last reply: David Eldridge, Jul 12, 2019, 2:48 pm

Side Lighting- Clerestory

NC-2009 EAp2: Minimum Energy Performance
posted by Fatou Jabbie, | BSc. Comp. Sci. | MSc. Sustainability Management | LEED AP BD+C on Jul 12, 2019, 8:58 am

Hello everyone, happy Friday!

Should a Clerestory Side-light be considered a window? Not sure why am thinking it could be considered as a Skylight but thought to confirm anyway. Thank you...

Last reply: Fatou Jabbie, | BSc. Comp. Sci. | MSc. Sustainability Management | LEED AP BD+C, Jul 12, 2019, 2:06 pm

Are Vision Strips Included in Low-Emitting Materials?

CI-v4 EQc2: Low emitting materials
posted by Diana Smiciklas on Jul 12, 2019, 1:02 pm

Can 3M vision strips be excluded from the low-emitting materials calculations? Technically it can be considered part of the wall panel system, or an adhesive, but it is difficult sourcing CDPH SM...

LEED Interpretation ID# 10421 for ASHRAE 90.1-2010 Adjusted Point Scale for LEED v2009 Projects

CS-2009 EAc1: Optimize Energy Performance
posted by Silvia Ruiz on Jul 11, 2019, 7:04 pm


I have a project that was register on February of 2015 and I’m working with ASHRAE 90.1-2010 in the Energy Model Software, I understand that I can use the interpretation 10421 to...

Last reply: Silvia Ruiz, Jul 12, 2019, 12:45 pm