the.com/retaining wall
A quiet bouncer holding back a slow-motion landslide that never gets to finish its move.
means A structure built to hold back soil or rock and keep a slope from sliding, so the ground stays where it's wanted on uneven terrain.
from A transparent compound. "Wall" comes from Old English weall, itself borrowed from Latin vallum, a line of defensive stakes or rampart. "Retain" arrives via Old French retenir from Latin retinere — re- ("back") plus tenere ("to hold") — literally "to hold back," the same tenere that gives us tenant, tenacious, and tenure. So a retaining wall is, etymologically, a "holding-back wall": the words do exactly what the engineering does.
- drainage matters
- Most failures come from trapped water, not gravity
- weep holes
- Those little gaps let pressure escape on purpose
- ancient tech
- Inca dry-stone walls still stand after 500 years
- hidden mass
- Soil pushing sideways can weigh tons per foot
- lean trick
- Many tilt slightly back to fight the slope
machu picchu terraces — incan retaining walls built around 1450 in peru that still hold the mountain citadel's agricultural terraces
great wall of china — 2,300 km defensive retaining structure built across northern china starting in the 7th century