Ch.11 Q 57 WWF. The slab in Problem 56 is reinforced with wire mesh. Determine the number of rolls of wire mesh needed for the slab. There are 750 square feet of wire mesh per roll. Add 11 percent for lap and waste. Answer: 56. Using a waste factor of 12 percent, determine the amount of concrete needed to pour the slab shown in Figure 11.44. The slab is 4 inches thick. 30 25 40 FIGURE 11.44. Floor Slab Perimeter. 15 10' 20

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Collection Systems

The collection systems form a part of sanitary engineering, which is a sub-branch of civil engineering. It is also known as public health engineering and wastewater engineering. It is a methodology followed to remove and properly dispose of human waste, along with creating systems to provide safe and clean usable water. These measures ensure a hygienic and disease-free community. Sanitary engineering, apart from building sewer disposal units, is also involved in plumbing, fire protection, hydraulics, life safety, environmental protection, information technology, microbiology, pathology, and so on.