A network of rainwater drainage pipes from point A to point D as shown in Figure 1, with slope i = 0.003, drainage pipes

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A Network Of Rainwater Drainage Pipes From Point A To Point D As Shown In Figure 1 With Slope I 0 003 Drainage Pipes 1 (43.8 KiB) Viewed 12 times

A Network Of Rainwater Drainage Pipes From Point A To Point D As Shown In Figure 1 With Slope I 0 003 Drainage Pipes 2 (84.72 KiB) Viewed 12 times

A network of rainwater drainage pipes from point A to point D as shown in Figure 1, with slope i = 0.003, drainage pipes made of reinforced concrete have a length of L = 4m, internal diameter as d = 400mm, external diameter as D = 500mm, with the depth of buried sewer is 0.7m, the depth of pit bottom at point A is HA = 1.3m. A LAB= 200(m) a = 2(m) LCD= 400(m) D Fig 2 B C LBC = 150(m) Fig 1 m = H(m)
1. Calculating excavation hole depth (m) at points B, C, D. 2. With the excavated hole section as shown in Figure 2, excavated pit soil is dry sandy soil with a pile dumping angle of 25°, the swelling of this dry sandy soil is 35% (porosity-swell). a. Calculating the height and width of the dumping strip in the form of triangular sections according to the way of digging along the CD. b. Calculating the height, diameter of conical soil mound, each mound is poured 3m apart along the BC. 3. Installing this drainage pipe, calculating the amount of soil to be transported to other places, showing the compaction factor 0.95 (5% compaction rate), ignoring the volume of the drain bearings when installing and assuming the site is relatively flat..