Salti al navigilo Salti al serĉilo
Post-casting, broken open[redakti]
Post-casting, cut open[redakti]
Perimeter slab edge joint with incomplete firestop.
Main Gallery: Firestop
- Concrete structures often have a fire-resistance rating, due to concrete's excellent fire-resistance. Openings must be firestopped to comply with building codes in order to restore the rating of the assembly.
Secondary efflorescence: Osteoporisis of the concrete.