Situation VI. Here under shows a table of quantities of earthworks of a proposed highway to connect Bogo City and Danao City. The length of the free haul distance is specified to be 50 meters long and the limit of economical haul is 462.76 meters long. Assume the ground surface to be slopping uniformly. Station End Areas Fill Remarks Cut 10 +020 10 + 115.65 10 + 297.92 10 +320 10 +347.92 10 +578.41 Initial Point Limit of economic haul Limit of free haul Balancing point Limit of free haul 80 54.57 5.9 4.66 43.15 Limit of economic haul End point 10 + 620 50

Abstract Evaluation? – Part 1 (5%) Identify (via labelling and marking – highlighting, underlining, etc.) the different parts of the abstract below: 1. Introduction/Background 2. Research objective 3. Methods 4. Results 5. Conclusions Abstract Biocovers are widely used in landfills to oxidize emissions of the greenhouse gas methane. Biocovers used till date are fully or partially made of composts. Compost takes time and effort to create, and costs about $10 per cubic yard on an average. Even more importantly, however, production of compost, although theoretically an aerobic process, actually generates methane, from 3.2 to 362 kg carbon dioxide (CO2)-equivalents per ton of wet waste composted, depending on the type of waste, whether open or enclosed composting technology is used, and other factors. To reduce the net greenhouse gas emissions from biocovers, this research explored the potential of uncomposted yard waste as a landfill biocover to oxidize methane. The components of yard…

The City of Forty-Five (population 465,565) has requested your assistance in evaluating its solid waste collection system. Determine the mean time per collection stop plus the mean time to reach the next stop, the number of pickup locations per load, and the minimum number of trucks the city must own. The City of Forty-Five collection data are as follows: Average truck capacity = 12.5 m3; Average observed compaction ratio = 2.87 Crew size = 2;  Number of pickups = 1 /wk (no rear-of-house service) Average number of cans per stop = 2.63/wk at 0.1136 m3/can Average number of residents per stop = 5 Average uncompacted density = 105.76 kg/m3 Average transport time to disposal site including delays and dumping = 1.78 h/trip Average number of trips to disposal site = 2/d; Rest breaks = 2 at 28.0 min Average maintenance downtime = 37.0 min/d; Average workday = 8.00 h Average percent of trucks out of service for major repairs = 15.0% Number of workday per week = 5

Assuming waste not recovered all goes to landfills. Determine the total landfill capacity consumed national wide each year. The specific weights of waste at landfill are as follows. Convert your answer to # of football stadiums filled. Area of football stadium = 1.75 x size of a standard football field Depth of filling = 30 ft Waste category Specific weight (kg/m³) Aluminum 2470 Steel and other metals 7100 Glass 2300 Paper and cardboard 570 Wood 450 All others ~700