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Answer:
Distance between manholes = 166.67 (Unit) (Approx)
Explanation:
Given:
Invert elevation = 2605
New Invert elevation = 2610
Grade % = 3% = 0.03
Find:
Distance between manholes
Computation:
Grade % = (Change in elevation)/Distance between objects
0.03 = (2610-2605)/Distance between manholes
0.03 = 5 / Distance between manholes
Distance between manholes = 166.67 (Unit) (Approx)
Answer:
BCC is Body Centered Cubic structure and FCC is Face Centered Cubic structure.
Explanation:
<u>BCC</u>
In Body centered cubic structure, atoms exits at each corner of the cube and one atom is at the center of the cube. The total number of atoms that a BCC unit cell contains are 2 atoms and the coordination number of the BCC unit cell is 8, that is the number of neighbouring atoms. Packing factor which determines how loosely or closely a structure is packed by atoms is 0.68 for a BCC Unit cell. The packing efficiency is found to be 58%. Metals like tungsten, chromium, vanadium etc exhibit BCC structure.
A face Centered cubic structure consists of an atom at each corner of the cube and an atom at each face center of the cube. The total number of atoms that a BCC unit cell contains are 4 atoms per unit cell and the coordination number of FCC is 12. Packing factor of a FCC unit cell is 0.74%, thus FCC structure is closely packed than a BCC structure. Metals like aluminium, nickel, cooper, cadmium, gold exhibits FCC structure.