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Content text WEEKLY 5 SOLUTION (W ITEM ANALYSIS).pdf

WEEKLY EXAM 5 TRANSPORTATION 2; CONSTRUCTION 1; STRENGTH OF MATERIALS 3; THEORY OF STRUCTURES 1
AMSTHEC CONSTRUCTION 1 AND TRANSPORTATION 2
1. In a deep braced excavation, what is the purpose of struts or tiebacks installed between retaining walls (e.g., sheet piles or soldier piles)? A. To support excavation equipment B. To anchor the foundation of the adjacent building C. To measure wall deflection D. To provide lateral support against earth pressures, preventing wall collapse.
2. The American Association of State and Highway and Transportation Officials' (AASHTO) design structural number for a road is 4. The material specifications are as follows. If a high-stability plant mix asphalt concrete surface course with an experience coefficient of 0.44 is to be placed on top of the specified subbase and base course materials, the required surface course thickness is most nearly Hint : SN = a1D1 + a2D2 + a3D3 A. 3 in. B. 4 in. C. 5 in. D. 6 in.

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