Residential Foundation Layout in Hagersville

What was needed

The new foundation walls had to land in the right place relative to the house already standing on the lot, following the client-provided drawings.

The surveying work we carried out

• Surveyed the existing building and set survey control on site
• Prepared layout calculations from the client-provided drawings
• Set foundation wall pins in the excavated footing trench

The excavation itself was carried out by others, so excavation stakes were not part of our scope.

Site conditions

The existing house stood close to the dig, a wooden fence ran beside the instrument position and the ground around the trench was gravel. Hagersville, our home base in Haldimand County, grew along the old Hamilton to Port Dover plank road that is now Highway 6.

Methods and equipment

We set survey control first and surveyed the existing building, then worked out each layout position in the office from the drawings. Back on site, a robotic total station on a tripod over the control set those positions as pins in the trench, each sprayed orange.

Deliverables

• Survey control on site for the layout
• Foundation wall pins in the footing trench, marked with orange paint
• Layout calculations

How the survey supported the next stage

With pins in the trench, the crew had fixed points to check the wall forms against the design before any concrete arrived. Adjusting a pin is quick; adjusting a poured footing is not.