Koj puas xav paub yog vim li cas lub round hatches?

Txhua txhua hnub, thaum peb tsiv mus nyob rau lub nroog, nyob rau hauv peb teb pom thiab ces ntaus ib tug manhole npog. Qhov no kwv uas lub nroog toj roob hauv pes txij thaum yau tau ua thiaj li paub thiab, kuv yuav txawm hais prosaic hais tias, raws li ib tug txoj cai, peb tsis them sai sai rau nws.

Thiab nyob rau hauv vain ... Koj puas tau xav yog vim li cas lub round hatches? Tsis square, tsis rectangular, tsis Dawb, thiab round nws?

Kuv ntshai hais tias yog ua ntej lawm qhov teeb meem thiab tsis muaj kev txaus siab, tam sim no koj mas nws yeej xav tau cov lus teb.

Nqe 1. hatches phwj: yas, cam khwb cia hlau, roj hmab, roj hmab. Yuav ua li cas lub luag hauj lwm ua lawv tau ua?

Ua ntej ntawm tag nrho cov, nws yuav tsum tau muab sau tseg, lawv yog ib qho tseem ceeb ib feem ntawm tej manhole, thiab muab lawv ncaj qha mus rau hauv lub cev. Ntxiv mus, qhov kev kawm yuav tsum tau muab tso rau thiaj hais tias nws yog snug txaus, thiab tsis khaum los yog thaum khiav ntawm nws los yog nyob rau nqa tawm tej hom kev sib txuas lus tej hauj lwm.

Yog hais tias koj saib ze ze, koj yuav pom tias txhua hau muaj ib cov lus qhib hais tias yog tsim los yuav tau ntsuas cov theem ntawm cov roj kis ntawm lub qhov dej.

Lub cover yog hnyav, uas 50 kg. Thiab xws massiveness yog tsis yuam, nws yog tsim txhob txwm tshaj tawm nyob rau hauv thiaj li yuav cais tej yuav ua rau muaj nws xaav. Nws yuav tsum nyob twj ywm nyob ruaj ruaj txawm nyob rau hauv muaj zog heev zog ntawm thaj av tsheb.

Rau hnub tim, lub CIS lub teb chaws, muaj yog tsis tsuas cov loj heev tub sab ntawm lub npog, tab sis kuj lawv active sau point ntawm seem hlau. Uas yog vim li cas nws twb txiav txim siab los npog manholes tshwj xeeb qhob slabs. Txawm li cas los, qhov no txoj kev muaj ib tug ntau ntawm cov shortcomings. Firstly, lub txheej lov haum sai sai, thiab tib ob, thaum ntaus los ntawm ib tug lub tsheb, nws yog tsuas txia mus ua ib tug neeg teeb meem yuav ua tau loj heev tsheb huam yuaj.

Nqe 2. Peb yuav ua tiag teb lo lus nug.

Raws li nws muab tawm, kuv twv nyob rau hauv no account lub loj, thiab nyob rau hauv no tsab xov xwm kuv yuav kawm txog peb versions.

• Yog vim li cas yog manholes round? Cov kev tshab txhais ntawm cov thawj. Zajlus kom.

Yuav ua li cas yuav tshwm sim yog hais tias xws li ib tug hau muaj, hais tias, ib square zoo? Zoo, ncaj qha hais lus, tsis muaj dab tsi txaus ntshai yuav muaj tshwm sim. Txawm tias yuav tau qhia ncaj, kuv paub hais tias nws yuav ua rau ib txhia txaav. Ua ntej ntawm tag nrho cov, los ntawm ib tug txhob txwm geometrical xav txog kev teem. Nyob rau hauv lub square cover kab pheeb ces kaum loj tshaj qhov ntev ntawm lub sab, thiab ces nws yuav tog nyob rau hauv. Nrog puag ncig, txawm hypothetically, nws yuav tsis tshwm sim. Nws hloov tawm hais tias lub caij nyoog kawg no yog npaum li cas nyob xeeb dua qub, vim hais tias nws yuav tsis poob rau hauv, thiab, yog li ntawd, nyob rau hauv cov kev tshwm sim ntawm ib tug thaum muaj xwm ceev qhov teeb meem nyob rau hauv ib reservoir yuav tsis cuam tshuam neeg ua hauj lwm, thiab lub tshuab yuav nyob twj ywm lawm, tsis nkag mus rau hauv ib tug cia li qhov tsim nyob rau pavement.

• Yog vim li cas yog manholes round? Piav ntawm lub thib ob. Qhov ntawd yog funny.

Thaum hnov cov nkees, thaj, los ntawm cov ntau txhiab tus "vim li cas?" A niam tsev hluas, sim teb cov lus nug zoo li ib tug me nyuam. Nws hais tias ib yam dab tsi xws li: "Qhov tshij, lub qhov yog puag ncig thiab saib rau koj tus kheej yuav ua li cas lwm tus lawv yuav npog?" Kuv luag nyav thiab xav. Tab sis nws yog nyob rau hauv tus txoj cai, cia li, thiab yog vim li cas, ces, tsis txhob square qhov los yog nws cia li ib tug coincidence? Nws nug hais tias nws tus phooj ywg, kes duab lub vajtse. Nws hloov tawm hais tias tag nrho cov cesspit yooj yim npaum li mus khawb tawm, tshaj tej ntawm, nws yog ib tug ntau technologically tshaj, kav ntev thiab yog tsis ntau li ntau raug rau transformation thiab hloov nyob rau hauv kub. Oh, zoo, nyob rau hauv qhov no txhais, dhau lawm, muaj ib co tseeb.

• Yog vim li cas yog manholes puag ncig. Piav ntawm peb. Qhov ntawd yog interesting.

Cov neeg ua hauj lwm ntseeg tau hais tias lub hau ntawm no hom yog yooj yim los mus thauj. Zoo, xav txog tej yam uas koj yuav tsum tsiv mus nyob nws los ntawm ib qhov chaw mus rau lwm lub. Nws yuav yog ib tug square, nws yuav tsum nqa lawv tus kheej yuav tsis tau ua li ntawd yuav tau muab kev koom tes tsis muaj tsawg tshaj li 2 tus neeg, thiab tsis muaj zog txiv neej, raws li active kwv, raws li tau teev los saum no, muaj ib tug dlej luj. Tab sis lub round, yog tias tsim nyog, koj yuav yooj yim yob. Nyob rau hauv tas li ntawd, qhov zoo tshaj plaws puag ncig cover lus dag nyob rau hauv ib tug tshwj xeeb uas tsim qhov chaw, vim hais tias nws tsis yog tsim nyog los ntswj, sib txuas rau qhov tsim nyog qhov. Thiab yog hais tias koj xav txog nws, yam xyuam xim thauj tus vajvoog yog yooj yim tshaj ib tug square los yog ib tug daim duab peb sab, thiab tej caj npab thiab ob txhais ceg yog lawm, thiab cov daug tsis yeej tawm lub ntug.