Cov kev txwv hnyav yuav raug yuam rau manhole npog - lawv yuav tsum hnyav li 50 kilo, muaj saum npoo nrog kev pab cuam los ntawm 2 txog 6 hli, muaj cov txheej txheem tshwj xeeb rau kev tshem tawm yooj yim thiab lub qhov rau kuaj xyuas cov roj hauv cov lim dej. Txawm li cas los xij, tsis muaj ib txoj cai rau cov duab ntawm lub kaus mom, txawm li cas los xij, feem ntau, lawv sawv cev ntawm lub voj voog.
Cov Lus Qhia
Kauj ruam 1
Lub ntsiab yog vim li cas manhole npog ua puag ncig yog vim lawv xav tau tsawg cov khoom siv los tsim khoom. Cov kev cai ntawm qhov dav ntawm qhov lim dej manhole yog 600 hli, uas yog, lub sijhawm npog manhole yuav tsum muaj qhov taub ntawm 600 mm, thiab lub xwm fab ib - sab ntawm 600 hli, nrog xws li qhov ntev, thaj tsam ntawm lub xwmfab manhole npog yuav yog 0.36 m2, thiab ib puag ncig tsuas yog 0.25 m2, uas 28% tsawg dua.
Kauj ruam 2
Lub hau npog yuav tsis tsuas yog me dua hauv thaj chaw, tab sis kuj ua kom nyias nyias, txij li thaum cov khoom sib kis tau faib ntau yam hauv nws, uas txhais tau tias lub zog yuav tsum tau raug txo kom tsawg.
Kauj ruam 3
Lub voos plaub ceg lossis daim duab peb sab npog tuaj yeem ua poob rau hauv lub kaus mom, nws yuav muaj teeb meem kom tau lawv vim lawv qhov hnyav, lawv tuaj yeem ua rau cov khoom puas los yog ua rau tib neeg raug mob yog tias lawv poob. Lub voj voos ncig yuav tsis muaj qhov poob rau hauv daug uas phim nws qhov loj me. Qee lub sijhawm manhole npog tau tsim nyob rau hauv cov duab ntawm Reuleaux daim duab peb sab, uas kuj hu ua kab ncig, xws li daim duab peb sab kuj tsis mus rau hauv lub qhov, vim nws muaj qhov dav tsis tu ncua.
Kauj ruam 4
Lub kauj npog manhole yog yooj yim dua rau nruab thiab ib txwm snaps rau hauv qhov chaw. Nws tsis tas yuav tig tig kom haum rau cov fab raws nraim li koj xav tau nrog lwm lub pob npog.
Kauj ruam 5
Round manhole npog muaj luv dua kev txhawb nqa ntev dua li cov ntawv sib dhos, uas txhais tau hais tias kev pheej hmoo ntawm kev tawm tsam yog txo qis. Cov hau nrog cov tiv thaiv lossis puab ib sab ntawm cov khoom txhawb nqa tau tawg thiab nrov dua.
Kauj Ruam 6
Nws yog qhov tsis txaus ntseeg hais tias manhole npog yog hloov vim tias lawv tuaj yeem dov tau thiab nqa tsis tau. Cov hau ncig muaj qhov tshwj xeeb txhawb kev tiv thaiv, yog li nws tseem yuav tsis ua haujlwm yob lawv ib txwm, ntawm qhov tod tes, nws yog qhov yooj yim dua rau kev txav mus xws li lub hau ob peb kaum ntawm centimeters tshaj li ib lub duab plaub.
Kauj Ruam 7
Round manhole npog yuav luag tsis tau sag, tab sis cov sib dhos ib yuav luag ib txwm sag. Thiab thaum kawg, cov kav dej phwj tuaj feem ntau puag ncig zoo li qub, yog li nws yog qhov tsim nyog los ua lub hau rau lawv puag ncig.
