Question

U BAA1323 ENGINEERING X my/exam/uploads/BAA1323%20ENGINEERİNG%20SURVEYING%20S2%2008 18.pdf QUESTION 2 (25 MARKS ) Three manholes MHI, MH2 and M0:3 have been comastracted along Placfom A and Plecform B as shown in Flgure 2. Plaform A is lower by Q.800 m fiom platform B. The sewer is to be laid rising from MHI to M12 and M112 to MI3 with umiform gradient of 1 in 200 and 1 in 300 respectively. The horinontal distances from MH1 to M12 and from MH2 to MH3 are 45.776 m and 93.167 m respectively. The staff reading at TBM, invert level of MiHI and ground lever platform A are 1.821, 2.588 and 1.263 respectively Determine the invert level of MHI, MH2 and MH3 D) (6 Marks) i) Calculate depth to be excavated at MIH3 2 Marks) Platform AL:9.442 Links up

Answer 1

Telescore asts Mid 1821 2-588 3 TBM MH ,263 300 Inver lese 0.4 in 20 Tnvesh 45776 m 93.167 m the 39"re, From 45 1 2.o0 022 a3 tb7 2 N Duw, me. es, on BM. S1.23 m

Inveǐ r leve14- MHI ., 51.263-2,588 nvert lewel r MH8.GSm An nverlevel Ar 2. 3 Aos. Elevation platform-ttev.6-mshrumenr onis Staff readina plat form 1 51, 263-1, 263 or m

E Le vation dfplat Plat form1 80 Now Depth or en cavation a MW3 Elevation dr platform 2 level σ( M Ha = 50.80-49.61녀 Ahay