A 22-storey apartment block with a basement is to be constructed on a raft foundation which will rest at 5 m depth from

[answerhappygod]

A 22 Storey Apartment Block With A Basement Is To Be Constructed On A Raft Foundation Which Will Rest At 5 M Depth From 1 (46.1 KiB) Viewed 19 times

A 22-storey apartment block with a basement is to be constructed on a raft foundation which will rest at 5 m depth from the ground surface and has 20 x 28 m dimensions. The ground water level is also at 5 m depth. The gross foundation pressure is 275 kPa. The soil profile consists of 12 m deep loose to medium dense sand (ybulk = 17 kN/m², Ysat = 19 kN/m”), which is underlaid by a deep sandstone layer (Ysat = 19 kN/m²). The standard penetration blow numbers obtained are presented below: Depth (m) N 2.0 14 3.5 20 5.0 18 6.5 21 8.0 16 9.5 20 12.0 26 13.5 50/3 15.0 50/5 Estimate the expected settlement for the short term (3 years) and long term (30 years) using Burland-Burbidge method.