3) Water pipe leak under floor slab - A leaking water pipe will also cause moisture to move up through a floor slab and initially mimic the sweating caused by a missing vapor barrier. But eventually the water will start to pond in an area or bubble up from small cracks.
impassive â(comparative more impassive, superlative most impassive) 1  Having, or revealing, no emotion. 2016 May 22, Phil McNulty, âCrystal Palace 1-2 Manchester Unitedâ, in BBC: It was a victory that clearly meant so much to Van Gaal as the normally impassive manager raced from his seat in the technical area to celebrate Lingard's winner. Still or motionless.
1. (General Physics) (of a thermodynamic process) taking place without loss or gain of heat. n. 2. (General Physics) a curve or surface on a graph representing the changes in two or more characteristics (such as pressure and volume) of a system undergoing an adiabatic process.[C19: from Greek adiabatos not to be crossed, impassable (to heat), from a- 1 + diabatos passable, from dia-across + bainein to go].. (General Physics) a curve or surface on a graph representing the changes in two or more characteristics (such as pressure and volume) of a system undergoing an adiabatic process. [C19: from Greek adiabatos not to be crossed, impassable (to heat), from a- 1 + diabatos passable, from dia-across + bainein to go].