A surface channel is provided along the expansion joint of the building
in order to reduce the risk of accumulation of rain water at that ergion
which will cause penetration of rain water into the joint.

Legend:
- 20mm thick ( 50mm thick for deck ) insulation
- Cement sand rendering with hardener facing
- Caulking fillet
- R.C. wall
- Mosaic tiles floor finish to roof landing and skirting
- Neoprene gasket
- R.C. deck slab
- C.I. channel cover frame
- Loose C.I. channel cover grating
- "U" concrete channel with hardener facing
- 50mm wide expansion joint
- ontinous extruded aluminium cover plate