Answer:

$7.$ For the conditions given below, determine the horizontal length of $CD$ that must be laid out to achieve the required true horizontal distance CD$.$ Assume a $100-$ ft steel tape will be used, with crosssectional area $0\mathrm{.}0025$ in$.2,$ weight $2\mathrm{.}4lb,$ and standardized at $68F$ to be $100\mathrm{.}008ft$ between end marks when supported throughout with a $12$lb pull.

Required horizontal distance $CD={68\mathrm{.}96}^{\text{'}}$

Average temperature $=54F$

Supported throughout

Tension $=201b$

a$.{68\mathrm{.}95}^{\text{'}}$

b$.{68\mathrm{.}87}^{\text{'}}$

c$.{69\mathrm{.}03}^{\text{'}}$

d$.{68\mathrm{.}99}^{\text{'}}$

Answer: