# Waterproofing And Slab Deflections ### Issue Image: ![[Pasted image 20241218161246.png]] ## Issue Description: - Drains and RWOs are often located nearby to columns as these elements often have continuous vertical alignment throughout the building. - After some time, diflection will occur in a concrete slab and water may be directed away from the drains. - Where possible RWOs should be located in the middle of spans, as if the slab does deflect, water will still be directed to the RWOs. ## Actions to Prevent this Issue: - [ ] Where possible Architect shall check that RWOs should be located in the middle of spans, as if the slab does deflect, water will still be directed to the RWOs. - [ ] Where possible Hydraulic Engineer shall check that RWOs should be located in the middle of spans, as if the slab does deflect, water will still be directed to the RWOs. ## Source