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Solve the quetionno.2 only in full details.

Solve the quetionno.2 only in full details.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Solve the quetionno.2 only in full details. 

Question No. 1 An excavation is proposed for a square arca near the bend of a river as shown in Fig. P4.8. It is expected that the flow of water into the excavation will come through the silt layer. Pumping tests reveal an average horizontal bydraulic conductivity of 5.2 x 10 cm/s in the silt layer. The excavation has to be kept dry. Determine the flow (q) into the excavation. River Excavation Plan 1.2 Slape Excavation Silt 21 m Cross section a-a 8 m Not to scale Question No. 2 The highway embankment from Noscut to Windsor Forest, described in the sample practical situation, is 10 km long. The average cross section of the embankment is shown in Fig. P3.22a. The gradation curves for the soils at the two borrow pits are shown in Fig. P3.22b. Pit 1 is located 5 km from the start of the embankment while pit 2 is 3 km away. Estimated costs for various earthmoving operations are shown in the table below. Compare the cost and check which option is cheaper? Cost Operation Pit 1 Pit 2 Purchase and load borrow pit material at site, haul 2 km $10/m3 $12/m3 round trip, and spread with 200 HP dozer $0.50/m3 $102/m $10/m $0.55/m3 Extra mileage charge for each km Compaction $1.26 Miscellaneous $0.85/m3
Transcribed Image Text:Question No. 1 An excavation is proposed for a square arca near the bend of a river as shown in Fig. P4.8. It is expected that the flow of water into the excavation will come through the silt layer. Pumping tests reveal an average horizontal bydraulic conductivity of 5.2 x 10 cm/s in the silt layer. The excavation has to be kept dry. Determine the flow (q) into the excavation. River Excavation Plan 1.2 Slape Excavation Silt 21 m Cross section a-a 8 m Not to scale Question No. 2 The highway embankment from Noscut to Windsor Forest, described in the sample practical situation, is 10 km long. The average cross section of the embankment is shown in Fig. P3.22a. The gradation curves for the soils at the two borrow pits are shown in Fig. P3.22b. Pit 1 is located 5 km from the start of the embankment while pit 2 is 3 km away. Estimated costs for various earthmoving operations are shown in the table below. Compare the cost and check which option is cheaper? Cost Operation Pit 1 Pit 2 Purchase and load borrow pit material at site, haul 2 km $10/m3 $12/m3 round trip, and spread with 200 HP dozer $0.50/m3 $102/m $10/m $0.55/m3 Extra mileage charge for each km Compaction $1.26 Miscellaneous $0.85/m3
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