I even did it with sliver space tolerance = 0 and got the same result. This time the Peak Cooling Total Load was 5447 W (97.83 W/m2), which was significant larger than the first attempt. Then I reduced the sliver space tolerance to 50, rechecked the Analytical Surfaces and the Air Gaps were gone. ![]() ![]() I calculated the model and the Peak Cooling Total Load was 3773 W (67.76 W/m2). I ran the Analytical Surfaces and noticed that along with Exterior/Interior Walls, Floors, Ceilings, Roofs, there was an item named Air Gaps - looked like the height of the ceiling. Except these upper limits, I didn't change anything else, their properties were default, including the sliver space tolerance = 308.4. ![]() All upper limits were set properly (space 1: ceiling, space 2: level 2, offset = 0), no error in Heating and Cooling Loads. I saved the file and linked it in Revit MEP and spaced the room with two spaces, the first one from the floor to ceiling (2.6 m), the other from ceiling to roof - the plenum (1.4 m). ![]() I added another level for ceiling (2.6 m) and created the ceiling automatically at this level. I'll give it a try.įor example, I had a rectangular room with walls, floor at level 1 and another floor at level 2 as its roof (4 m).
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