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An old, severely corroded vertical metal pipe (presumably galvanized steel) was left inside the wall. The new plumbing lines (blue) are routed directly above/against it.
Problem: There is an acute risk of pipe failure due to advanced corrosion if the pipe is still in service. If it has been decommissioned, it must be removed to prevent contact corrosion with the new installations and to avoid future structural damage caused by rust bleed-through. The current condition is not acceptable.
SIA 118 — Rules of engineering practice
Massive structural defect in the concrete at the wall base (corner area). The fine mortar matrix has failed to encapsulate the coarse aggregate. This indicates insufficient compaction (vibration) or significant formwork leakage (grout loss) at the base. The required concrete cover for the reinforcement is not guaranteed here, creating corrosion risks and severely compromising the watertightness of the construction joint.
SIA 262 — Concrete Construction
The natural stone paving is installed nearly flush with the bottom edge of the window/door frame. According to SIA 271, a waterproofing upstand height of at least 60mm above the water-bearing layer is required. For barrier-free (threshold-free) transitions, a drainage channel is mandatory immediately in front of the facade to prevent water accumulation and ingress behind the waterproofing connection. Both are missing here. High risk of water damage to the interior and the frame.
SIA 262 — Waterproofing of Buildings
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