Monthly Archives: September 2016


Surveying 665

Surveying is the art of making measurements of the relative positions of natural and man made features on earth surface and plotting this measurement to suitable scale to form a map plan or section. PRIMARY DIVISION OF SURVEYING Geodetic surveying – this is the type of survey in which curvature […]


Stairs 411

stairs are means of descending or ascending from one floor level to another by a series of steps. PARTS OF A STAIR Riser – is the vertical face of a step Rise – vertical distance between to consecutive treads Tread – horizontal surface of the stair that is stepped on […]


Types of roofs 155

In the building industry whether due to structural integrity, formality or aesthetics there are many types of roofs. This include :- Saddle roof¬† – this is a concave roof that curves inwards from a high top. it can also be a hyperbolic paraboloid roof.¬† flat roof – this is basically […]