What are the types of lines in engineering drawing?
1 answer:
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Answer:
Explanation:
the solution to the problem is given in the pictures attached. (b) is answered first then (a). I hope the explanation helps you.Thank you
Answer:
<em>a. 3.33 MPa</em>
<em>b. 0.276 m^2</em>
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Explanation:
The image is attached below.
The load = 40 kN = 40000 N
side length of wooden post L = 120 mm = 0.12 m
side width of the wooden post B = 100 mm = 0.1 m
Area of the beam = L x B = 0.12 x 0.1 = 0.012 m^2
a. <em>Maximum bearing stress of the concrete footing = load/area</em>
max. bearing stress = 40000/0.012 = 3.33 x Pa = <em>3.33 MPa</em>
b. If the average bearing stress in the soil is 145 kPa = 145000 Pa
<em>size of the footing will be = load ÷ average bearing stress</em>
size of footing = 40000/145000 ≅<em> 0.276 m^2</em>
