P And S-waves evaluation for engineering site investigation at a hostel complex inside Basrah University, Southern Iraq

Abstract EN

The area understudy was surveyed using seismic refraction techniques as an available tool for engineering purposes.

Eight seismic profiles for either P and S-waves had been chosen and carried out by the use of five impacts (center, normal, reverse, between geophones 6-7 and 18-19), in order to delineate layers thicknesses and depth of water table underlying such a hostel complex site inside Basrah University, southern Iraq.

Dynamic elastic modulii were also calculated depending upon the velocities of P and S-waves of these layers and its densities.

Accordingly, three shallow subsurface soil layers were found.

Their mean thicknesses are ranged between (2.15-2.45) m, (17.65-18.4) m below ground surface for the top and first layers respectively.

On the other hand, mean water table seems to be at (2.3) m depth and the mean dynamic elastic constants are ranged between {κ = (0.194-7.352 × 103) Mpa, μ = (0.145-2.994 × 103) Mpa, E= (0.364-7.385×103) Mpa, λ= (0.092-5.764 × 103) Mpa, and, σ= (0.19-0.35)}.