Hello everybody,

Regarding the Baseline Service Water-Heating System, both Table G3.1.1-2 in Standard 90.1 - 2016, as well as the statements in Table 3 "Changes in ASHRAE 90.1 Performance Rating Method Requirements, 2010 to 2016" in LEED V4.1 Reference Guide (under the header "Service Water Heating") seem to be very cleat about the heating method to choose for the Baseline.

However, since our Hospitality project uses purchased chilled water and purchased heat (for heating, cooling and DHW), we are not completely sure if point G3.1.1.1 applies to the Baseline Service Water-heating system.

Our interpretation is that, since there is no exception listed under Table G3.1.1-2 (unlike Tables G3.1.1-3 and G3.1.1-4), Table G3.1.1-2 shall be used "as-is", and in our case choose "Gas storage water heater" for the Baseline DHW system, since we are working in a Hotel project. But we would appreciate a more thoughful point of view.

Thank you and best regards.

Hello everybody,

Regarding the Baseline Service Water-Heating System, both Table G3.1.1-2 in Standard 90.1 - 2016, as well as the statements in Table 3 "Changes in ASHRAE 90.1 Performance Rating Method Requirements, 2010 to 2016" in LEED V4.1 Reference Guide (under the header "Service Water Heating") seem to be very cleat about the heating method to choose for the Baseline.

However, since our Hospitality project uses purchased chilled water and purchased heat (for heating, cooling and DHW), we are not completely sure if point G3.1.1.1 applies to the Baseline Service Water-heating system.

Our interpretation is that, since there no exception listed under Table G3.1.1-2 (unlike Tables G3.1.1-3 and G3.1.1-4), Table G3.1.1-2 shall be used "as-is", but we would appreciate a more thoughful point of view.

Thank you and best regards.

We are going to implement a composting program in a hotel.

For this purpose, we will allocate adequate space to store organic waste that will be removed twice a week, according to the frequency of municipal waste removal.

We believe it is essential to promote the education of hotel employees and even guests and to encourage food donation policies in order to reduce the amount of organic waste

We would be grateful if anyone could provide us with any additional advice on how to improve this policy.

Thanks!!

If this pilot credit was part of a pre-requisite or credit perhaps the advantages and disadvantages could be explained of using ISO 50002 or ASHRAE Procedures to carry out energy audits for the Owner to decide which is best to apply in each case.

Hi everyone, sorry if this is a bit obvious, it is my first time working with this type of LEED certification. I am working on a refurbishment project for an office space, I have made my energy model with the specifications given by the design team and created a baseline model, but what I would want to know is which aspects of this baseline model remain as the proposed one and which change to the ones specified in the ASHRAE Standard. As an example, as you know when working on a BD+C model the baseline uses the ASHRAE requirements for all the elements of the envelope, the HVAC system, lighting etc as well as simulating energy loads for four different orientations. It makes sense to me that in this case there is no need for the simulation in different orientations as the existing building could not hypothetically be rearranged in a different way anymore, and if the envelope is not being modified from its original form, it would have the exact same characteristics in the two models, and we would have to assess how much energy we can save with the new HVAC system, new lighting and new internal partitions we are proposing. I just want to know if our logic is sound here. Thank you very much for your help.

Hello, I have a building with a district system for cooling, heating and DHW. As ASHRAE 90.1 stated I have used the district system for the Heating and the cooling in Proposed and Baseline Model. 

My question is how to fill the LEED Minimum Perfomance Calculator... For the utility rates, I hvae the real ones that I have used in the two models 

My problem is in the GHG emissions. I have a Green District System in the City, can I use this to have savings in my building? 

The district system are using Biomas, VRSU (Waste to Energy) for the 92% of the thermal energy produced (and 4% o electricty and 4% of Natural Gas).  I can calculate the real emissions factor for a kWh thermal produced: 0,04 kg CO2 for kWh.

The questions is: Can I put my real emissions factor (0,04 kg CO2 for kWh thermal) in the proposed and a tradiotional emissions factor in the Baseline (for exemple a Gas Natural plant 0,252 kgCO2 for kWh thermal)? Or I need to use the same GHG factor for the two models?

Dear GBCI team,
We are starting an ID+C project. This will be done in 2 phases. Basement floor, ground floor and P1 is the first phase, and floors 2,3,4 and 5 are the second phase. The second phase also includes the inclusion of photovoltaic panels throughout the roof.
We want to carry out two separate projects, one for each phase, since the projects are carried out by different teams.
Is it possible to take into account for Phase 1, the proportional part of photovoltaic panels even if they are built a few months later?

Thank you.
Best regard,

In our team we are conducting a study for the construction of an extension of an existing building.
The property applies for LEED certification for both buildings (existing and expansion). The facilities of both buildings will be connected together.
How can we work this case? someone has encountered a similar situation? Can you perform a single certification?

Good afternoon, 
When entering the materials in the EC3 recognized program for this pilot credit, I am not finding some categories of materials, especially, aggregates, ceramics and stones (either for flooring or cladding). I wonder if I should enter them anyway and leave them as unmapped in the report alluding that these categories and corresponding EPDs are missing (which do exist in the market but not in the tool) or should I not enter them since they will not count in the final result anyway. They are not structural elements in my case, only some small parts of cladding and exterior subbase.

Will the program consider introducing these categories in the short term?

Thank you in advance for your answers.

We are working on an office building 17 meters wide, on one floor, the layout is a 3.5-meter distribution corridor, serving as a division between two rows of offices. These offices are equipped with mechanical ventilation, air conditioning, and windows facing the outside on both sides.

Local regulations do not require that these spaces be ventilated. But is it mandatory for Ashrae?

Considering ASHRAE 62.1 guidelines, which state that interior rooms can be ventilated through adjoining rooms, and given that the corridor has openings to the offices that account for more than 8% of the area of the interior room.

Would it be justifiable for the distribution corridor to utilize adjoining rooms, such as the surrounding offices, for natural ventilation purposes without having to install other equipment or systems in the corridor?