1:08 Il LTE Individual Assignment CEQ 31... CIVIL ENGINEERING ROANTICLO (Earthworks Quantities) (Due Date: Friday, 28/03/2025) Done Thumbi Irrigation Scheme in Mzimba district is under threat of flooding. In order to mitigate against the problem, authorities have decided to construct a flood protection bund (Dyke). Figure 1 is a cross section of a 300m long proposed dyke; together with its foundation (key). Survey data for the proposed site of the dyke are presented in Table 1. Table 2 provides swelling and shrinkage factors for the fill material that has been proposed. The dyke dimensions that are given are for a compacted fill. (1) Assume you are in the design office, use both the Simpson Rule and Trapezoidal Rule to compute the total volume of earthworks required. (Assume both the dyke and the key will use the same material). (2) If you are a Contractor, how many days will it take to finish hauling the computed earthworks using 3 tippers of 12m³ each? Make appropriate assumptions. DIKE CROSS SECTION OGL KEY (FOUNDATION) 2m 1m 2m 8m Figure 1: Cross section of Dyke and its foundation Table 1: Survey Data for site of a Dyke 1.5m from highest OGL 0.5m from OGL BS IS FS RL 1.655 100.000 Remark TBM THU 5 1.512 Baseline AO 1.480 20 1.495 40 1.580 60 1.830 80 1.740 100 1.950 1.950 120 2.400 140 1.880 160 1.890 180 1.550 200 1.530 220 1.275 240 1.170 260 1.975 1.950 1.165 -20 0.900 -40 1.680 c/s THU5 OGL Q 1:10 ■ll LTE Individual Assignment CEQ 31... B 2 of 2 KEY (FOUNDATION) 1m 2m 8m Figure 1: Cross section of Dyke and its foundation Table 1: Survey Data for site of a Dyke 1.5m from highest OGL 0.5m from OGL BS IS FS RL 1.655 100.000 Remark TBM THU 5 1.512 Baseline AO 1.480 20 1.495 40 1.580 60 1.830 80 1.740 100 1.950 1.950 120 2.400 140 1.880 160 1.890 180 1.550 200 1.530 220 1.275 240 1.170 260 1.975 1.950 1.165 0.900 -20 -40 1.680 c/s THU5 Table 2: Swelling and Shrinkage factors for the proposed fill material Initial Soil Type Soil Condition Bank Converted to: Loose Compacted Clay Bank 1.00 1.27 0.90 Loose 0.79 1.00 0.71 Compacted 1.11 1.41 1.00 Common earth Bank 1.00 1.25 0.90 Loose 0.80 1.00 0.72 Compacted 1.11 1.39 1.00 Rock (blasted) Bank 1.00 1.50 1.30 Loose 0.67 1.00 0.87 Compacted 0.77 1.15 1.00 Sand Bank 1.00 1.12 0.95 Loose 0.89 1.00 0.85 Compacted 1.05 1.18 1.00 OGL Done Q