With the foundation complete the framers have begun to install the main level floor joist system. Once sheeted with subfloor, the surveyor returns to the site to shoot the main floor elevation to ensure the height of the house is within the development permit parameters. Going over height can be a serious breach of the planning permission and is an extremely undesirable outcome. By measuring the height of the main floor it is possible to double check the final height of the highest roof peak.
With the city inspection and approval of the foundation now complete, it is now possible to schedule the backfill of the foundation. Due to the walkout rear basement and below grade patio that was excavated to four feet below grade, the backfilling technique used will diverge slightly from typical calgary practice. Essentially the area of the slab that was dug up and the sunken patio fill must be compacted as it is filled with loose soil. Since a machine with a compactor attachment is available, compacting of the entire perimeter foundation is possible as an added bonus. This should result less future settlement, and closer tolerances for our grading efforts. Typical calgary construction practice is to backfill without compaction. Due to the soil type, loose fill placement, and freeze thaw or moisture based natural compaction each year, significant uncontrolled settlement often occurs if backfill is not properly compacted. By compacting the entire excavated area, far less settlement should be observed.
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| The first floor joists have been installed on the left side house |
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