Dab tsi yog cov kav dej grate ua los ntawm?
Dab tsi yog cov kav dej grate ua los ntawm?

Video: Dab tsi yog cov kav dej grate ua los ntawm?

Video: Dab tsi yog cov kav dej grate ua los ntawm?
Video: Nej cov poj laib ua zoo tsam looj hlias Npauj kub xyooj & Nkauj ntxawm Mv 2023 2024, Kaum ib hlis
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Kev piav qhia. Manhole npog feem ntau ua tawm ntawm cam khwb cia hlau, pob zeb los yog ua ke ntawm ob. Qhov no ua rau lawv pheej yig, muaj zog, thiab hnyav, feem ntau hnyav dua 113 kilograms (249 lb).

Kuj tseem yuav paub yog, hnyav npaum li cas yog lub kav dej grate?

Qhov nruab nrab npog hnyav nruab nrab ntawm 250 thiab 300 lb (113-136 kg). Nws yog ib qho tseem ceeb rau dej phwj manhole npog yuav hnyav raws li cov kav dej phwj tuaj tuaj yeem tsim cov roj methane uas tuaj yeem thawb lub npog npog tawm ntawm txoj kev, cia cov pa tsis zoo tuaj rau hauv txoj kev.

Tsis tas li ntawd, cov dej ntws ua los ntawm dab tsi? Hom tsev ntws cov kav dej uas feem ntau pom niaj hnub no yog ob qho tib si ua ntawm tooj liab los yog cov yas polyvinyl chloride (PVC) thiab acrylonitrile butadiene styrene (ABS). Lwm hom ntws cov kav dej muaj qee zaum ntsib hauv cov tsev ua ntej xyoo 1960, xws li ntws /waste/vent (DWV) piping ua ntawm hlau los yog hlau.

Kuj tseem paub yog, vim li cas cov kav dej xau npog puag ncig?

Manholes yog puag ncig vim "nws yog qhov zoo tshaj plaws los tiv thaiv lub ntiaj teb nyob ib puag ncig nws." Hloov Cov duab yog yooj yim rau kev tsim dua li square lossis duab plaub, thiab vim manhole npog hnyav, ua puag ncig ua rau lawv yooj yim txav ntawm qhov chaw mus rau qhov chaw (tsuas yog dov lawv!).

Puas yog cov kav dej loj txaus taug kev?

Raws li Scooby Apocalypse, lub cov kav dej phwj tuaj ntawm Albany yog loj txaus tsis yog rau cov neeg laus xwb taug kev ncig yooj yim hauv, tab sis kuj tuav lub tsev pheeb suab tag nrho lub nroog ntawm cov neeg tsis muaj tsev nyob. Auj, thiab rau qee qhov laj thawj muaj qhov nkag mus rau hauv lub khw hauv qab daus.

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