Levelling Equipment and Accessories Quiz

A self-leveling optical instrument used to measure height differences and establish points in the same horizontal plane. It contains an internal compensator that ensures the line of sight remains horizontal.

A graduated staff used for taking vertical measurements in conjunction with a level.

An advanced levelling instrument that electronically measures height differences. It requires a bar-coded levelling rod for automated readings.

A flat and stable plate placed on the ground to serve as a temporary benchmark when moving the level.

A small spirit level attached to the levelling rod to help keep it vertically aligned during measurements.

A graduated rod used to measure height differences in levelling. They are available in materials like aluminum, wood, or fiberglass and come in metric or imperial graduations.

A specialized type of levelling rod with barcodes for digital levels. It enables automated readings and speeds up the levelling process.

The tripod provides stability for the instrument to assure accurate measurements. The levelling rod is essential for taking vertical measurements.

The authority responsible for ensuring land subdivisions adhere to regulations, zoning, and urban planning standards.

To evaluate if a subdivision's design complies with zoning rules for land use (residential, commercial, etc.) and assigns public spaces, utilities, and roadways appropriately.

Assessing the environmental impact of a subdivision, ensuring it aligns with sustainability and conservation regulations. This includes evaluating drainage, flood control, and preservation of natural features.

Ensuring the subdivision plan includes necessary infrastructure such as roads, sidewalks, water, electricity, sewer systems, and public green areas.

Analyzing the subdivision's impact on the local community, including housing demand, traffic flow, and economic development.

The process of reviewing and approving a subdivision's design and issuing a permit to allow construction. The authority also monitors construction to ensure alignment with the approved plan.

The process of submitting approved cadastral plans (property boundary maps) from the Survey Department to the Planning Authority.

The Planning Authority reviews the survey plan to ensure it aligns with zoning laws, infrastructure plans, and land use policies, incorporating technical and planning standards.

The agreement and approval of the subdivision by both the Survey Department and Planning Authority, leading to the registration of the cadastral plan with the land registry.

Final on-site inspections conducted by both the Survey Department and Planning Authority to verify the subdivision's adherence to the approved design.

A procedure used to check and adjust the accuracy of a levelling instrument by ensuring the line of sight (collimation line) is truly horizontal.

The first step involves setting up two pegs in a straight line, approximately 30-60 meters apart.

Place the levelling instrument close to Peg A and take readings on both Peg A (backsight) and Peg B (foresight) and record them as R1A and R1B.

Move the instrument close to Peg B and take readings on Peg A and Peg B, recording them as R2A and R2B.

A systematic method for computing elevations of various points in a levelling survey based on differences between consecutive readings.

The Rise and Fall Method is used for establishing levels relative to a known benchmark (BM).

The first step in field procedures for the Rise and Fall Method involves placing the levelling instrument on a tripod between the benchmark and the first point.

The second step in field procedures for the Rise and Fall Method involves sighting the levelling rod on the known benchmark (BM) and recording the reading.

The third step in field procedures for the Rise and Fall Method involves sighting the levelling rod on any points between the BM and the destination point.

The fourth step in field procedures for the Rise and Fall Method involves sighting the levelling rod at the endpoint and recording the reading.

The fifth step in field procedures for the Rise and Fall Method involves repositioning the levelling instrument to maintain visibility and repeating the process for additional points.

The sixth step in field procedures for the Rise and Fall Method involves recording backsight, intermediate sight, and foresight readings for all points until the final destination.

The Rise = Previous Reading - Current Reading when the current point is higher, and Fall = Current Reading - Previous Reading when the current point is lower.

The RL of the first station (BM) is known. For subsequent points, RL is calculated by adding the rise and subtracting the fall from the previous station's RL.

The Survey Department focuses on accurate measurement, documentation, and mapping of the subdivision area.

The Survey Department conducts accurate field surveys to define the boundaries of the subdivision, ensuring they conform to legal descriptions and neighboring parcels.

The Survey Department prepares detailed cadastral survey plans showing the layout of the subdivision, parcel sizes, boundaries, and easements.