Describe relative humidity.
What will be an ideal response?
Control of a space's relative humidity is an important factor in the overall conditioning of its environment. Requirements vary depending on occupancy. Humidity describes the water vapor within a space. Relative humidity is a ratio of water vapor weight actually in the air to the maximum possible water vapor weight the air could contain at a given temperature; this ratio is expressed as a percentage. For example, if relative humidity is 100 percent, the air can hold no more water vapor, and an increase will cause moisture to condense and form water drops.
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Problem 1.32 Two wooden members of uniform cross section are joined by the simple scarf splice shown. Knowing that the maximum allowable tensile stress in the glued splice is 75 psi, determine (a) the largest load P that can be safely supported, (b) the corresponding shearing stress in the splice.
The following results were obtained by a mechanical analysis. Classify the soil using the AASHTO classification system and give the group index. Sieve Analysis, % Finer than No. 10: 84%, than No. 40: 58%, than No. 200: 8%; soil is not plastic.
What will be an ideal response?
To lower and narrow a valve seat that has been cut at a 45-degree angle, use a cutter or stone of what angle?
A) 45 degrees B) 15 degrees C) 60 degrees D) 30 degrees
How many cubic feet of acetylene gas is stored in a size MC acetylene tank weighing 8.0 pounds?
A) 0 ft3 B) 7.5 ft3 C) 5 ft3 D) 10 ft3