Surveying Equipment. - ppt download

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Description

Builder’s Level A telescope instrument used to check level of forms or field grades. Builders
field grades. Builders levels. are designed to be used for. short distances. Farm or. dumpy levels are similar to. builder s levels, but have. more powerful telescopes. Farm levels are used for. longer distances. Both. instruments are leveled. manually using adjusting. screws. An auto level. requires less manual. leveling and has only three. leveling screws.
tilted vertically to measure. vertical angles. Surveyor’s. have generally replaced. these with Total Stations , but transits are still used to. measure vertical angles in. construction.
Hand Level The hand level is held in the hand thus providing little accuracy
To protect threads, keep cap on when not in use.
directly (without subtraction from the HI) by used a. sliding tape. Some rods have a cut/fill scale for use in. grading.
available to allow readings up to 700 feet in distance.
Leveling can be. done with a single person.
level. Can be fitted to a Philadelphia or Direct Elevation rod.
Range Pole A simple pole used in lieu of a rod where elevation measurement is not needed
These may be stored on a reel or coiled.
Used to mark distances when. chaining or measuring distance.