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Hello.
00:01
So to determine the sheer stress acting on the glue joints of the box beam, let's just first reiterate the given data that we have.
00:08
The dimensions of each board, we have a 3 times 6 centimeters or 30 millimeters times 60 millimeters.
00:14
For this case of the problem, we're only going to be working in millimeters.
00:17
So everything in centimeters is going to be converted to millimeters.
00:21
The total applied transverse load is 10 kiloons, which is equal to 10 ,000 newons.
00:26
So again, we're also converting kilenoons to newtons.
00:28
And the box beam formation, we have.
00:30
Have four boards glued together to form a hollow rectangular section, which is very important.
00:35
We'll get to that later on in the problem.
00:37
So first, we have to determine the beams cross section.
00:40
So we have the outer width.
00:41
We'll call this b out.
00:43
B sub out.
00:45
That's going to equal 60 millimeters.
00:48
We have h out, which is our outer height.
00:51
That's also equal 60 millimeters.
00:53
We have our inner width.
00:56
We'll call this b sub in.
00:58
And this is equal to 6 minus 2 times 3, which is equal to 0 centimeters.
01:03
Now this actually makes sense because since the inside is just the gap between the two sides of the board, we're given an inner width of 0.
01:10
And same goes for the inner height.
01:12
We have h -n, which is also 6 minus 2 times 3, which is also 0 centimeters or 0 millimeters...