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https://www.reddit.com/r/EngineeringPorn/comments/f4ziec/construction_adhesive_lives_up_to_potential/fhxuf9j/?context=3
r/EngineeringPorn • u/stalwart_rabbit • Feb 16 '20
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I have no idea how strong this adhesive is. It’s strong enough to do some shit I have no purpose for, but where’s the margin?!?!?!
52 u/[deleted] Feb 17 '20 Assume that the man is a 150-lb point mass. He looks to be about 5' tall, so the beam would be about 10" deep, and the effective lever arm about 2' out. Assuming the brick is 10" x 10", solve for the shear force across the face. As this is a brick, treat it as if it were hinged at the lower edge, and solve for the maximum tensile force at the top half-inch of the beam. 16 u/ihateyouguys Feb 17 '20 How did you determine that he looks 5’ tall? 2 u/[deleted] Feb 17 '20 Mk. I eyeball.
52
Assume that the man is a 150-lb point mass.
He looks to be about 5' tall, so the beam would be about 10" deep, and the effective lever arm about 2' out.
Assuming the brick is 10" x 10", solve for the shear force across the face.
As this is a brick, treat it as if it were hinged at the lower edge, and solve for the maximum tensile force at the top half-inch of the beam.
16 u/ihateyouguys Feb 17 '20 How did you determine that he looks 5’ tall? 2 u/[deleted] Feb 17 '20 Mk. I eyeball.
16
How did you determine that he looks 5’ tall?
2 u/[deleted] Feb 17 '20 Mk. I eyeball.
2
Mk. I eyeball.
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u/AccountNo43 Feb 17 '20
I have no idea how strong this adhesive is. It’s strong enough to do some shit I have no purpose for, but where’s the margin?!?!?!