Name the factors that affect the fire resistance of reinforced or prestressed concrete members.
What will be an ideal response?
(i) Thickness of member?the greater the thickness, the greater the fire resistance.
(ii) Type of coarse aggregate?carbonate (limestone) aggregate gives greater fire resistance than siliceous (quartz)
aggregate
(iii) Thickness of concrete cover over reinforcement or prestressing strands. The greater it is, the greater the fire
resistance of the member.
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Straight and step are two types of ____.
a. scaffolding b. stools c. ladders d. hammers
In 1899, guerrilla warfare broke out in the Philippines because
A. Spanish citizens still living there tried to regain political control of the country. B. the United States refused to give the Filipino people their independence. C. Communist insurgents attempted to seize control of the islands. D. the United States refused to promote the economic and social development of the Filipino people. E. American missionaries tried to convert Catholic Filipinos to Protestantism.
Here are two random variables that are uncorrelated but not independent. Let X and Y have the following joint probability mass function:
a. Use the definition of independence on page 141 to show that X and Y are not independent (in fact Y=|X|, so Y is actually a function of X).
b. Show that X and Y are uncorrelated.
Which of the four types of refrigeration systems cools the air without removing any heat from the air?
A) Mechanical refrigeration systems B) Evaporative systems C) Absorption refrigeration systems D) Thermoelectric systems