can you answer number $7?$ I know how to do number $6.$ Thanks

When you combine the moment from gravity from part $4\mathrm{.}2$ with the moment from wind from part

$5\mathrm{.}1$ or $5\mathrm{.}2($wind can only blow north or south at any given time$)$ which direction is worse for the

foundation $($wind blowing from the north or from the south$)?(7$ points total$)$

$6\mathrm{.}1.$ Correctly add the two moment effects from the weight $(4\mathrm{.}2)$ plus wind from the north $(5\mathrm{.}1)$ to

determine the net effect $($do not factor either number$).$ Make sure you label this net effect as

"from the north". $(3$ points, $1$ each for magnitude, direction, and units$)$

$6\mathrm{.}2.$ Correctly add the two moment effects from the weight $(4\mathrm{.}2)$ plus wind from the south $(5\mathrm{.}2)$ to

determine the net effect $($do not factor either number$).$ Make sure you label this net effect as

"from the south". $(3$ points, $1$ each for magnitude, direction, and units$)$ You must show your

work to get credit however if you did parts $4$ through $6$ correctly the net overturning moment

for wind from the south should be $-9,575lb-$ft CW$-.$

$6\mathrm{.}3.$ State the governing wind direction. Which is worse for the foundation? $(1$ point$)$

What is the maximum tension$/$compression in each bolt due to the maximum moment effect

determined in part $6\mathrm{.}3?$ The distance between the two bolt rows can be found in the East Elevation

$($See Figure $2)$ and enlarged connection $($see Figure $3,$ next page$).$ The is the bolt row leverage distance.

$(12$ points total$)$

$7\mathrm{.}1.$ Take the governing moment determined in $6\mathrm{.}3$ above $($shown as an

orange moment arrow indicating its rotational effect$)$ and convert

the units from $lb-ft$ to $lb-in.$ If you did all your math for parts $1$

through $6$ in lb $-$in then just copy the value down from part $6\mathrm{.}3.$

Reference CCW$+$ or CW$-$ or show and rotational arrow. $(2$ points, $1$

point for correct conversion and $1$ point for direction$)$

$7\mathrm{.}2.$ The bolt rotational resistance is represented by the force couple

$($the equal and opposite pair of blue arrows shown to the right$)$ that

the bolts must provide. That means the force couple bolt resistance

must act opposite to the moment in part $7\mathrm{.}1($shown as the dark

orange curved arrow, CCW$+$ is shown$).$ It must counteract the

moment arrow therefore the force couple should have the

opposite rotational effect to keep the sculpture in equilibrium $($CW$-$

is shown$).$ Show graphically the correct directions of the up$/$down

arrows $(1$ point$)$ and label T for the tension bolt row and C for the

compression bolt row $(1$ point$).$ Also label the leverage distance

between the bolt rows. $(1$ point$)[$Hint: for a refresher of the

concept of force couples see the section that starts on pg$.52$ of the

textbook and Figure $2\mathrm{.}38$ also located there.$]$

$7\mathrm{.}3.$ Divide the moment from part $7\mathrm{.}1$ by the bolt row leverage distance

$($in inches$)$ from part $7\mathrm{.}2.(2$ points$)$ This is the total force $($lb$)$ in each

bolt row. It represents the magnitude of both the tension, T and

compression, $C$ on each respective bolt row.

$7\mathrm{.}4.$ How many bolts are there in each bolt row $($not the total

connection bolts, just one row$)?[$Hint: See Figure $1.](1$ point$)$

$7\mathrm{.}5.$ What is the maximum tension per bolt in the tension bolt row? $(2$

points, $1$ magnitude, $1$ correct units$)$ You must show your work to

get credit however if you did parts $7\mathrm{.}1$ through $7\mathrm{.}5$ correctly the

connection at the base

looking towards the west.

The note $"2"$ TYP$"$ is not

governing tension per bolt should be $3,150$ lb$/$bolt$.$

relevant to part $7.$

$7\mathrm{.}6.$ Track all the correct units. $(1$ point$)$

$7\mathrm{.}7.$ Draw a rectangle around the final answers. $(1$ point$)$