Driven piles and bored piers are both deep foundation elements. In which situations are piles used and in which situations are piers used?
What will be an ideal response?
Piers are the more commonly used deep foundation elements. Pile driving is complicated and noisy. Piles are used in coastal areas where drilled piers are unsuitable due to the presence of water.
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Letter L measures what distance on the tape?
Reduce all fractions to their simplest forms. Convert all improper fractions to mixed numbers. Provide answers in the following format:
Fraction: 3/4
Mixed number: 1 5/8
List and briefly explain OSHA's voluntary protection programs
What will be an ideal response?
The three general types of materials used in electrical control systems are:
A) Conductors, semiconductors, and non-conductors. B) Wood, Concrete, and oil. C) Protons, electrons, and neutrons. D) Wire, electrical tape, and batteries.
Which of the following statements about the installation of a ground rod is correct?
A. Install vertically if practicable, then at not more than a 45-degree angle if not practicable to install vertically, then in a ditch at least 21?2 ft (750 mm) deep if not practicable to install at not more than a 45-degree angle. B. In dry or arid regions, it is required to install rods that are longer than 8 ft to reach permanent moisture level. C. First measure the resistance of the first ground rod, and install additional rods until the resistance of the group is 25 ohms or less. D. It is permitted to install the rod vertically, at not more than a 45-degree angle or in a ditch at least 21?2 ft (750 mm) deep, at the installer’s option.