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I'm simulating a 2 storey building with full basement, and for now I'm only running the sizing periods. For the basement zone, I'm wondering how KIVA is solving the foundation heat loss for the sizing periods. I'm assuming a uniform temperature of the ground is the initial condition, and the ground temperatures update over the warmup period. Is this correct?

I'm simulating a 2 storey building with full basement, and for now I'm only running the sizing periods. For the basement zone, I'm wondering how KIVA is solving the foundation heat loss for the sizing periods. I'm assuming a uniform temperature of the ground is the initial condition, and the ground temperatures update over the warmup period. Is this correct?