Abstract: A humidity sensing device dimensioned to be received in a humidor for detecting an out of range ambient moisture condition and transmitting a signal to a remote monitor. The sensing device establishes an acceptable range of period for a humidity sensitive oscillator. The out of range condition causes a signal to be transmitted to the decoding monitor which provides an alarm signal.
Abstract: A structural foundation for a building possessing improved stability wherein the combination of a moisture-pervious layer in contact with the soil surface and an overlying fluid gathering member are located beneath the foundation slab. The adjacent foundation footing, provided with a vertical anchoring system, includes air passages to the gathering system thereby permitting air circulation to remove moisture from beneath the slab.