Batter boards (or battre boards, Sometimes mispronounced as "battle boads") are temporary frames, set beyond the corners of a planned foundation at precise elevations. These batter boards are then used to hold layout lines (construction twine) to indicate the limits (edges and corners) of the foundation.
Answer:
mass of the air = 14.62kg
Workdone = 415.88 kJ
Heat transfer = 415.88 kJ
Explanation:
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Answer:
Cement is largely made up of calcium oxide. Cement can harden in the gastrointestinal tract and cause obstruction. Inhaling cement dust can cause coughing, wheezing, and difficulty breathing. The best prevention is to avoid or limit contact with cement.
Explanation:
Answer:
64.11% for 200 days.
t=67.74 days for R=95%.
t=97.2 days for R=90%.
Explanation:
Given that
β=2
Characteristics life(scale parameter α)=300 days
We know that Reliability function for Weibull distribution is given as follows

Given that t= 200 days

R(200)=0.6411
So the reliability at 200 days 64.11%.
When R=95 %

by solving above equation t=67.74 days
When R=90 %

by solving above equation t=97.2 days