Construction Geodesy

Construction geodesy is a practical sub-branch of engineering geodesy that provides all necessary geodetic support in the construction process. It covers work from topographic surveying to as-built surveys of completed objects.

Construction geodesy phases:

• Survey phase - topographic plan for design
• Preparation phase - geodetic network creation
• Construction phase - stakeout and control
• Final phase - as-built surveys and documentation

Main work types:

• Building axis stakeout - building and structure placement
• Height control - floor elevation verification
• Verticality control - wall and column verification
• Installation measurements - precise structure placement
• As-built surveys - constructed work documentation

Instruments and equipment:

• Electronic total stations - universal measuring instruments
• GNSS receivers - coordinate determination
• Precision levels - height control
• Laser levels - horizontality check
• 3D scanners - as-built documentation

Precision requirements:

Work type	Precision
Foundation stakeout	±5-10 mm
Wall verticality	±3 mm/floor
Floor slab elevations	±5 mm
Facade elements	±2-3 mm

Documentation:

• Stakeout certificates
• As-built drawings
• Control measurement protocols
• Geodetic journal
• Final as-built survey package

Cooperation with other specialists:

• Construction supervisors - quality control
• Designers - clarifications and changes
• Builders - daily stakeout work
• Clients - documentation submission

Quality construction geodesy ensures project implementation according to plans and prevents costly errors during construction.