THE 2-MINUTE RULE FOR CONTOUR SURVEY IN DHAKA

It varies from twenty m to 100 m. Nearer intervals are required if floor amount varies abruptly. The cross- sectional line needn't be normally be at appropriate angles to the main line. This process is ideally suited to street and railway jobs. Radial Line MethodIn meteorology, the barometric pressures demonstrated are diminished to sea level, not