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Civil Engineering Soil Mechanics And Foundation Difficulty: Medium

In soft clay of low bearing capacity, the type of steel pile generally used, is Admixtures which cause early setting and hardening of concrete are called If $$\alpha $$, H, A and $$\delta $$ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude $$\lambda $$, the following relation holds good $$\alpha $$ and $$\beta $$ are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being 'S' and 'f' respectively. Parallax displacement of the point due to relief, is If S is the sum of three angles of a spherical triangle, the spherical excess equals