Hi,

I have a question concerning  requirements of section 5.4.3.4 of ASHRAE 90.1-2007.

The project consists of a new building (exstension) called “boarding areas” that is linked...

For the baseline model relative to a building where a part is residential (4 floors) and another part nonresidential (ground floor), shall the envelope of the nonresidential part respect the U-...

In order to verify whether a fan is compliant with the mandatory provisions we have to consider Table 10.8B, haven't we?

That table is relative to an electricity frequency equal to 60Hz....

Hi all! I have a problem with water coil sizing. I set the following parameters for cooling and heating: 

Coil:Cooling:Water,...

We are deciding between the use of EN 15251 and the use of ASHRAE 62.1. Do you have experience in applying EN 13779–2007? I've started to read that and I'm wondering whether there are aspects...

The corridors are separated from the staircase by two doors in order to create a space (buffer space) whose walls and doors are fire-resistant. That space is ventilated through a ventilation duct...

Hi all,

I’m modeling for a project under LEED CS v4 according to ASHRAE 90.1-2010.

I know that unmet hours shall not exceed 300 .

In LEED 2009 in accordance to ASHRAE 90.1-...

The v4_Minimum Energy Performance Calculator_v05 states that "Mandatory step controls are included in the proposed, and modeled in the baseline for all spaces enclosed by ceiling height...

The Reference Guide at p. 460 states:

"For any projects using energy model Path 1,...

In order to calculated the points relative to NC-v4 EAc2 - Optimize energy performance shall the produced electric energy from a renewable source that is sold to the national grid be...