Dear all, I have a question regarding how to create the slab-on-grade floor for the baseline model.
Below are my questions and the research I have done so far:
1. 6" concrete floor.
It seems that 6" concrete floor (density 140lb/ft^3) normally be used for the baseline model.
2. Created the slab-on-grade floor based on F-factor.
Through EnergyPlus/OpenStudio, we can create the floor with the F-factor that required by ASHRAE 90.1. However, EnergyPlus/OpenStudio uses the F-factor to generate the slab-on-grade floor zone by zone. It might require extra work to so since it depends on how people zone their first floor.
Here is the link regarding creating the F-factor floor: https://leeduser.buildinggreen.com/forum/f-factor-slab-proposed-design
Please correct me if I am wrong. If the project has an underground floor, 0 will be the perimeter input in EnergyPlus.
3. For software that cannot do F-factor floor, it is recommended to calculate it from Appendix A of ASHRAE 90.1.
If you have come across this before, what you recommend an approved methodology to create the slab-on-ground floor.
By the way, the energy consumption difference between the model with 6" concrete floor and the model with the floor that is calculated by the F-factor is more than 5%.
