Because you have a basement No area in a house is COMPLETLY dry. The pole is rusting because of moisture in the air. Humidity will rust the pole, I suggest two applications of a primer followed by an application of a latex based paint.
1) Warm air can hold/contain more water vapor than cool air. 2) Relative humidity is a measure of how much water is in the air as compared to the maximum it can hold. Thus if you take some warm summer air and send it into a nice cool basement, the air will cool and as cool air can hold less water than the warm air, the relative humidity of the cooled air in the basement will go up.
Humidity
relative humidity
Humidity is a condition of a gas, you add moisture to a gas to increase it's humidity and dry it to reduce the humidity when air gets to 100% humidity it may rain?
For any interiors the ideal relative humidity is between 30% to 50%. More than 50% causes growth of bacteria/fungi/mould. Less than 30% will cause health problems skin cracks other health issues.
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Ideal Humidity. I do not think that there is an ideal humidity. Where I live most people have approximately 40 percent humidity. This must be seasonally adjusted to as low as 20 percent in the winter time otherwise condensation on cold surfaces, such as windows, will occur. Indoor humidity should be reduced or increased relative to the temperature outdoors and personal comfort level indoors
75 degrees F OK that's fine for temperature but what is the ideal room humidity percentage? Actually, most building codes only require you at keep the temperature at 68 degrees, which is ideal. The ideal room humidity percentage is usually around 50% ASHRAE Standards: 68-74F @40-60% relative humidity in the Winter 73-79F @40-60% relative humidity in the Summer
There is nothing wrong with installing carpeting in the basement. There may be types of carpeting that work better with humidity in the basement. Be sure that your basement is sealed to keep water out before installing.
It seems that 50% is a good level. 40% is dry, and 60% invites mold and sweaty pipes. Use an electric hygrometer to measure the humidity level. A dehumidifier of at least 50 pints per day is recommended for the basement.
The conditions ideal for spray painting a wood material are a relative humidity of 55 percent and temperature of 20 degrees Celsius.
Although basement moisture can be fueled by water leakage, it is usually an atmospheric condition caused by humidity rising as warm air cools and shrinks in the cooler basement area. Dehumidifiers work well to control this.
Become of the slow changing humidity a basement can actually be a good place to put your piano. Just make sure to cover it to keep it from getting damp.
use high velocity fans it really helps out in the drying the basement and it always works! and it dries very fast
Vents, doors and windows should be kept CLOSED all year round. Warmer, more humid air is attracted to your cooler basement. "Fresh air" coming into your basement is also bringing in humidity with it. This causes condensation problems ranging from sweating pipes to damp, musty basements. Get a good dehumidifier to control humidity.
A humidor is a box for storing cigars or tobacco products; 72 percent relative humidity is ideal, but between 68 and 78 is acceptable. 70, 70 is ideal. 70 degrees and 70 percent humidity. 72 percent humidity would be considered a MAX for storage only. Many brands will not smoke at 72%. 68 to 69 % is preferred.