Related by context. Frequent words. (Click for all words.) 50 faulty 50 defective 48 hairline cracks 48 electrical conduits 47 structural defects 47 welds 46 substandard 46 faulty wiring 46 valve stems 45 defects 45 entrapments 45 sewer backups 45 corroded 45 unsafe 44 sewage backups 44 gallon propane tank 44 shoddy workmanship 44 structurally unsound 44 corrosion 44 shoddy 43 flammable vapor 43 elevator shafts 43 Propane tanks 43 contaminating groundwater 43 leaks 43 hazardous fumes 43 spalling 43 rotting wood 43 malfunctioning 43 faulty heater 43 bridge girders 42 electrical wiring 42 Big Dig highway 42 sewer pipes 42 steel trusses 42 ruptures 42 Big Dig tunnels 42 mold infestation 41 Transbay Tube 41 flashings 41 drainage culvert 41 faulty electrical wiring 41 structurally unsafe 41 fatigue cracks 41 Faulty 41 bridge abutments 41 ventilation ducts 41 leaky 40 roadbeds 40 sloped roof 40 rotted wood 40 tripping hazard 40 malfunctions 40 propane tanker 40 structural deficiencies 40 steel beams 40 flaking paint 40 manholes 40 Substandard 40 truss bridges 40 sewer mains 39 concrete footings 39 defectively designed 39 Soledad Mountain 39 rusted 39 mine subsidence 39 flammable vapors 39 watermains 39 flammable substances 39 failures 39 rollover accidents 39 underinflated 39 mechanical malfunctions 39 sinkholes 39 MacArthur Maze 39 cracked windshields 39 defective drywall 39 flammable foam 39 repairs 39 rusted metal 39 uneven pavement 38 electrical arcing 38 pipe 38 gaskets 38 steel reinforcement 38 weld 38 unmaintained 38 willful violations 38 welders 38 Upon arrival firefighters 38 rusting 38 inadequate 38 cost overruns 38 wiring 38 wheel bearings 38 standpipe 38 Manhole covers 38 unstable 38 train derailments 38 wooden pilings 38 dryer vents