16K views · 561 reactions |  ¡EL CANTANTE GUERRERO DESTAPÓ LA CLOACA DEL ARBITRAJE CONTRA CHIVAS! | NOTICIAS CHIVAS El ex árbitro Fernando Guerrero destapó los graves errores que cometen los árbitros y porqué suceden estas cosas. #Chivas #FutbolConCerebro #LigaMX | José María Garrido | Facebook

Rome’s main collector, the Cloaca Maxima, began as an open ditch in the late 7th–6th century BCE and was vaulted over time. By the mid-first century BCE—often placed around 60–50 BCE—Roman engineers reinforced crucial stretches with brick-faced opus caementicium, forming a stronger barrel vault that could resist collapses and move higher volumes from the Forum valley to the Tiber. Surviving segments and manholes still display those brick facings and concrete cores. The reinforcement mattered for