Worked examples: Use of stadia Tacheometry Formulae A 1" reading theodolite having a multiplying constant of 100 and an additive constant of 0 was centred and levelled a height of 1.48m above a point C of reduced level 46.87 A levelling staff was held vertically at points D and L in turn and the readings shown in the table below were taken Calculate (i)the reduced levels of points D and L (ii) the horizontal length of DL Staff Staff Readings (m) Vertical circle readings Horizontal circle readings D 3.240, 3.047, 2.853 87° 38' 53" 56° 49' 31" L 2.458, 2.230, 2.002 92° 21' 36" 98° 07' 18" 32

A ground resistance meter is used to determine the amount of resistance__________.(Objective 4-7) a. through a grounding electrode to the earth b. though a grounding electrode to the metal frame of an electrical cabinet c. from one end of a grounding conductor to the other end d. from a grounded conductor to the earth