Thaum npaj sab hauv hauv ob-zaj dab neeg tus kheej lub tsev, tsev, koj yuav tsum tau them sai sai rau kev npaj cov ntaiv. Nws tuaj yeem dhau los ua qhov kho kom zoo nkauj ntawm chav tsev. Tsis yog txhua txhua sab hauv yog tsim rau cov qauv ntoo. Qee zaum, nws yog qhov tsim nyog los sib sau ua ke los ntawm hlau. Yuav ua li cas los tsim ib tug staircase los ntawm ib tug profile yeeb nkab nrog koj tus kheej tes yuav tham nyob rau hauv kom meej tom qab.
Khoom zoo
Txawm tias tus tswv uas tsis muaj kev paub txog kev ua haujlwm tuaj yeem ua tus ntaiv los ntawm cov yeeb nkab profile nrog nws tus kheej txhais tes (daim duab ntawm cov haujlwm tiav yog nthuav tawm hauv qab). Cov qauv nthuav tawm muaj ntau yam zoo. Cov yeeb nkab hlau profile muaj zog heev thiab ruaj khov. Yog li ntawd, cov ntaiv los ntawm nws muaj cov yam ntxwv zoo ib yam, yog tias tus tswv ua raws li cov cai hauv lub tsev thaum lub sijhawm sib dhos.
Nws yog qhov ua tau los txhim kho tus ntaiv los ntawm cov yeeb nkab profile ntawm koj tus kheej. Txhawm rau ua qhov no, nws txaus los yuav cov khoom siv uas xav tau, nrog rau cov cuab yeej tsim nyog. Kev sib txuas yog tsim los ntawm vuam. Txhawm rau ua qhov no, koj yuav tsum yuav lub vuam inverter. Ua ntej pib lub installation, koj yuav tsum xyaum tsim welds ntawm cov khoom tsis tsim nyog. Tsuas yog ob peb feeb, koj tuaj yeem kawm paub yuav ua li cas tuav cov khoom siv vuam. Niaj hnub nimno welding inverters tso cai rau tus tswv uas tsis muaj kev paub los sib sau cov qauv hlau sai thiab ua tau zoo.
Vim qhov tshwj xeeb ntawm cov khoom siv, thav duab ntawm cov qauv tau sib sau ua ke sai. Qhov tseeb ntawm tag nrho nws cov ntsiab lus tau yooj yim khaws cia. Yuav luag txhua qhov style ntawm sab hauv, koj tuaj yeem tsim qhov tsim nyog. Ua li no, koj yuav tsum tau tsim ib daim duab ua ntej pib ua haujlwm.
Ua-nws-koj tus kheej hlau ntaiv los ntawm cov yeeb nkab profile tau sib sau ua ke sai. Tib lub sijhawm, kev ua haujlwm yuav tsis xav tau cov nqi nyiaj txiag loj. Cov yeeb nkab hlau kuj tseem pheej yig. Nrog rau txoj kev xaiv ntawm cov khoom siv, nws yuav tsis tsim nyog los ua txhua xyoo kev saib xyuas ntawm cov qauv. Cov kav hlau stainless tsis xav tau kev tiv thaiv ntxiv, yog li lawv tsis tas yuav pleev xim rau. Cov khoom tseem resistant rau ya raws thiab dampness. Cov kav dej tsis muaj zog muaj zog thiab ruaj khov. Yog li ntawd, cov qauv yuav siv sij hawm ntev, nws yuav nyob ruaj ntseg thaum ua haujlwm.
xaiv khoom
Koj yuav tsum xaiv cov khoom tsim nyog los ua cov ntaiv. Ua li no, koj yuav tsum tau yuav ib lub yeeb nkab profile nrog ib lub square lossisdaim duab plaub. Nws qhov loj me yuav tsum yog 60 x 40 cm. Txwv tsis pub, tus qauv tsim yuav tsis ua raws li lub tsev xav tau. Qee tus neeg ua haujlwm tshiab tshiab, xav kom txuag nyiaj, xaiv cov khoom siv nrog cov ntu me me. Nws yog ib nqi sau cia hais tias ib tug self-assembled ntaiv los ntawm ib tug profile yeeb nkab 20 x 40 cm tsuas yog deformed thaum lub sij hawm ua hauj lwm. Nws tsis tuaj yeem ris lub nra.
Ib tus ntaiv ua-nws-koj tus kheej ua los ntawm cov yeeb nkab profile 20 x 40 cm muaj qhov zoo nkauj. Nws zoo nkaus li loj heev, ntxhib. Qhov no ua rau lub staircase zoo li tsis tuaj yeem pom. Cov khoom siv sib dua yog tsim nyog rau cov ntaiv sab hauv tsev. Hauv qhov no, lub nra ntawm lub hauv paus yuav tsawg dua.
Tsis tas li ntawd, thaum xaiv cov kav hlau, koj yuav tsum coj mus rau hauv tus account lub thickness ntawm lawv cov phab ntsa. Hauv qhov no, nws yog ib qho tsim nyog yuav tsum coj mus rau hauv tus account cov lus pom zoo ntawm cov kws tshaj lij. Cov neeg tsim kev paub dhau los tsis raug qhia kom yuav cov kav dej tuab-walled profile rau kev sib dhos stairs. Tus tsim yuav saib loj, nws yuav hnyav heev. Qhov no nce lub load ntawm lub hauv paus. Nws yog qhov zoo tshaj plaws los xaiv cov khoom tuab-walled rau kev yuav khoom ntawm lub qab nthab. Ua-nws-koj tus kheej ntaiv los ntawm cov yeeb nkab profile nyob rau hauv rooj plaub no yuav muaj zog thiab txhim khu kev qha. Yuav tsim tau ib lub hauv paus cais rau nws los ntawm kev txuas rau hauv lub hauv paus ntawm lub tsev.
Txhawm rau sib sau cov qauv hauv tsev, nws yog qhov zoo tshaj los yuav cov kav dej nrog phab ntsa tuab ntawm 5-7 hli. Qhov no zam qhov tshwm sim ntawm kev vibrations thaum lub sijhawm ua haujlwm ntawm cov qauv.
Ntau yam qauv
Stairs rau lub sam thiaj los ntawm cov yeeb nkab profile 60 los ntawm 40 mm los yog rau lub qab nthab interfloor tuaj yeem tsim ntau yam. Muaj ntau yam hauv qab no:
- Txuas. Qhov no yog qhov kev xaiv yooj yim tshaj plaws. Xws li ib tug ntaiv muaj ob qho kev txhawb nqa, nruab nrab ntawm cov uas muaj rungs. Tus tsim yog lub teeb hauv qhov hnyav, yog li nws yog portable. Feem ntau siv rau attics. Nws tuaj yeem folded, tso cai rau cov qauv folding. Nyob rau hauv rooj plaub no, tus ntaiv yuav tsis siv ntau qhov chaw, nws yuav txo qis nrog kev pab los ntawm lub tshuab thaum cov tswv tsev yuav tsum tau nce mus rau hauv qab nthab lossis hauv qab nthab.
- kauj ruam- ntaiv. Nrog koj tus kheej txhais tes, koj tuaj yeem sib sau ua ke xws li tsim los ntawm cov yeeb nkab profile. Nws muaj ib qho yooj yim ntaiv ntawm ib sab, thiab kev txhawb nqa ntawm lwm tus. Yog tias tsim nyog, tus ntaiv nthuav tawm lossis folds, tsim lub kaum sab xis ntawm nws ob feem. Cov kauj ruam saum toj kawg nkaus yog lub platform uas koj tuaj yeem sawv. Qhov no yog kev tsim mobile, feem ntau siv rau tsev neeg lub hom phiaj.
- Marching. Cov qauv ntawm cov qauv hauv qhov no yog qhov nyuaj dua. Beams yog tsau ntawm ib theem, uas cov kauj ruam yog tsau. Lub staircase taug kev tuaj yeem ua ib theem. Qhov kev xaiv tsim no yog siv ob qho tib si hauv tsev thiab rau lub sam thiaj. Yog hais tias ob peb spans tau muab, interconnected los ntawm platforms, ces qhov no yog ib tug multi-level davhlau staircase. Nws yog feem ntau nruab rau hauv lub tsev. Lub hauv paus rau xws li staircase yog kosour. Nws tuav cov kauj ruamhauv qab no. Es tsis txhob kosour, ib txoj hlua tuaj yeem siv tau. Nws txhawb cov kauj ruam los ntawm qhov kawg.
- Ntsia. Cov kauj ruam yog nyob rau ntawm kev txhawb nqa ncej, nce mus rau hauv ib lub kauv. Ntawm qhov tod tes, railings yog welded rau lawv. Cov staircase no siv qhov chaw me me, yog li nws tau nruab txawm nyob hauv chav me me. Nws tuaj yeem dhau los ua qhov kho kom zoo nkauj ntawm sab hauv, yog tias koj ua tib zoo xav txog qhov tsim ua ntej.
- Boltsevye. Nws nyob ib sab ntawm phab ntsa, raws li tshwj xeeb bolts raug txiav rau hauv nws. Cov kauj ruam yog kho rau lawv. Nws yog ib qho tseem ceeb uas cov phab ntsa yog tsim los ntawm cov khoom siv ruaj khov xws li cib lossis pob zeb.
Yuav tsum tau thiab xaiv cov qauv tsim
Thaum tsim tus ntaiv los ntawm cov yeeb nkab profile nrog koj tus kheej txhais tes lossis ib kauj ruam-ntev, kev taug kev, ntsia hlau hom kev tsim kho lossis ntawm bolts, nws yog qhov tsim nyog los tsim cov duab kos ua ntej. Txhawm rau ua qhov no, xav txog cov ntsiab lus ntawm lub staircase, dab tsi lawv yog tus cwj pwm los ntawm.
Cov ntaiv muaj qhov yuav tsum tau ua thiab xaiv tau. Thawj ntawm lawv yog tam sim no nyob rau hauv tej kev tsim kho ntawm ib tug nyob ruaj ruaj hom (kev taug kev, ntawm lub bolts, ntsia hlau). Cov ntsiab lus thib ob pab tsim kom muaj qee qhov tsos lossis xav tau tsuas yog rau qee hom ntaiv.
Txhua tus qauv tsim muaj cov kauj ruam thiab kev txhawb nqa uas lawv tau kho. Tsis tsuas yog kev nplij siab, tab sis kuj muaj kev nyab xeeb ntawm kev ua haujlwm yog nyob ntawm qhov tseeb ntawm lawv tus qauv tsim. Cov kauj ruam muaj ob ntu - risers thiab cov kauj ruam. Qhov thib ob yog nyob rau hauvthawj ntu ntawm kauj ruam. Muaj ib kauj ruam txawm nyob rau hauv qhov yooj yim tsim. Lub riser ua haujlwm ntxiv rau kev txhawb nqa, nws tsis tas siv.
Ib yam yuav tsum tau ua ntawm tus ntaiv los ntawm cov yeeb nkab profile yog kev txhawb nqa. Nws qhov tsos txawv ntawm cov qauv sib txawv. Rau kev taug kev ntaiv, kev txhawb nqa yog kosour lossis bowstring; rau ntau yam ntsia liaj qhov rooj, cov no yog tshwj xeeb muaj zog bolts. Rau ib lub kauj ruam thiab cov qauv txuas, cov kauj ruam so ntawm sab rails, thiab rau ib lub staircase kauv, ntawm ib lub khib hauv qhov chaw.
Cov ntsiab lus ntxiv rau cov ntaiv ua ntawm ob phab ntsa yog railings. Hauv lwm cov qauv nyob ruaj ruaj, qhov no yog qhov yuav tsum tau ua. Lub railing rests ntawm balusters. Lub xub ntiag ntawm cov txheej txheem no ua rau muaj kev nyab xeeb ntawm cov ntaiv.
Kab rov tav platforms tuaj yeem muab nruab nrab ntawm ob txoj kev taug kev. Cov no yog cov khoom ntxiv ntawm cov qauv. Yog tias tsis muaj qhov chaw txaus hauv chav los npaj ib qho chaw ruaj khov ntawm txoj hlua lossis hom kev taug kev, ntxiv cov platform zoo sib xws.
Creating a drawing
Ua tib zoo kawm ntawm txhua qhov kev nthuav dav yuav tsum muaj cov staircase hauv nruab nrab ntawm cov yeeb nkab profile ua ntej sib dhos. Dab tsi txoj kab uas hla thiab thickness ntawm cov khoom yog haum rau nws creation, koj kuj yuav tsum tau txiav txim siab ua ntej pib ua hauj lwm.
Lub kaum sab xis ntawm cov ntaiv tsis tuaj yeem tsawg dua 30º thiab ntau dua 55º. Yog tias qhov kev xav tau no tsis tuaj yeem ua tau raws li qhov loj me ntawm chav tsev, cov turntables yog tsim los yog ib lub voj voog staircase raug xaiv rau kev tsim kho.
Kab rov tav spans yuav tsum yog ntau yam ntawm tus neeg cov kauj ruam. Yog li ntawd lawvfeem ntau muaj qhov ntev ntawm 0.5-1 m.
Nws yog ib qho tsim nyog los xam ua ntej lub load uas yuav ua rau tus qauv. Nws yuav tsum tiv taus 330-360 kg / m².
Cov qauv yuav tsum muaj railings. Koj tuaj yeem ua yam tsis muaj lawv, tsuas yog thaum sib dhos tus ntaiv, tus ntaiv los ntawm cov yeeb nkab profile. Nrog koj tus kheej txhais tes, koj tuaj yeem sib sau ua ke cov qauv kev taug kev lossis ntawm kev sib tw tsis muaj railings, yog tias lawv nyob nruab nrab ntawm ob phab ntsa. Muaj ntau lub tsev yuav tsum tau xav txog thaum tsim cov qauv no.
Cov railing yog qhov siab ntawm 85-90 cm (nyob ntawm qhov siab ntawm cov tswv tsev) los ntawm cov kauj ruam. Nyob rau hauv lawv yog cov balusters, qhov kev ncua deb ntawm uas yog 20-25 cm. Yog hais tias cov tswv ntawm lub tsev muaj me nyuam me, koj yuav tsum tau ua ib kauj ruam ntawm kev txhawb nqa ntawm lub railing 10-15 cm.
Tus naj npawb ntawm cov kauj ruam yog xam raws li qhov loj ntawm cov ntaiv. Tab sis tib lub sijhawm, nws tsim nyog xav tias ib tus neeg yuav tsum pib lub zog nrog ib ko taw, thiab ua tiav nrog lwm tus. Qhov no ua kom muaj kev nyab xeeb ntawm kev tsav tsheb. Nws yog qhov tsis tsim nyog rau cov kauj ruam los ua qhov siab sib txawv. Txwv tsis pub, qhov kev pheej hmoo ntawm kev raug mob nce ntau.
Xaiv qhov ntev ntawm cov ntaiv
Ib tus ntaiv ua los ntawm cov yeeb nkab profile 60 x 40 mm yuav tsum raug xam kom raug. Hauv qhov no, nws yuav tsum tau coj mus rau hauv tus account tias cov kauj ruam yuav tsum yog 10-15 cm siab. Qhov no tus nqi yog coj mus rau hauv tus account hauv kev suav. Qhov dav ntawm cov kauj ruam yuav tsum tau muab xam raws li cov kev cai uas twb muaj lawm. Qhov tsawg kawg nkaus qhov loj yog 20 cm. Nws yog qhov zoo tshaj plaws los ua cov kauj ruam nrog qhov dav ntawm 25 mus rau 30 cm. Txwv tsis pub, ko taw yuav tsis kov tag nrho. Qhov no yogkuj ua rau muaj kev pheej hmoo ntawm kev ntog stairs.
Yuav kom sib sau tus ntaiv los ntawm cov yeeb nkab tshaj lij nrog koj tus kheej tes, koj yuav tsum suav nws kom raug. Ntsuas chav, txiav txim siab nyob rau hauv qhov twg ntawm nws lub staircase yuav nyob. Tom ntej no, ntawm ib daim ntawv, kos ib lub tswv yim ntawm chav tsev, qhia qhov ntev. Tom ntej no, koj yuav tsum kos ib kab perpendicular los ntawm hauv pem teb mus rau lub qab nthab ntawm thawj pem teb. Nyob rau saum npoo ntawm pem teb los ntawm qhov chaw ntawm kev sib tshuam ntawm nws nrog ib txoj kab ncaj nraim, kos lwm txoj kab. Nws yuav muaj qhov ntev sib xws rau qhov chaw dawb hauv chav. Qhov chaw no yuav raug coj los ntawm tus ntaiv.
Los ntawm qhov kawg ntawm kab kos rau hauv pem teb, nteg ib kab mus rau lub qab nthab. Nws hloov tawm ib daim duab peb sab. Nyob rau sab uas lub hypotenuse nyob, yuav muaj cov kauj ruam. Nws yog ib qho tsim nyog los txiav txim siab lub kaum sab xis uas tsim los ntawm cov kab ntawm ceg thiab hypotenuse. Nws yuav tsum yog, raws li tau hais los saum toj no, 30-55º. Yog tias lub kaum sab xis tsis ua raws li qhov yuav tsum tau ua, turntables suav nrog hauv tus tsim.
Tom ntej no, tus lej ntawm cov kauj ruam raug suav. Qhov siab ntawm chav yog muab faib los ntawm qhov siab ntawm riser (los ntawm 10 mus rau 15 cm). Nyob rau hauv lub hypotenuse, ua xws li ib tug xov tooj ntawm cov cim uas muab tawm nyob rau hauv lub xam. Txhua qhov kev nthuav dav ntawm cov ntaiv yav tom ntej tau raug ua tiav hauv daim duab.
Pib mounting
Txhawm rau sib sau ua ke ib qho chaw nruab nrab ntawm cov yeeb nkab profile nrog koj tus kheej tes, koj yuav tsum tau yuav cov khoom tsim nyog, npaj cov cuab yeej tsim nyog. Ntxiv nrog rau cov yeeb nkab profile nrog ib ntu ntawm 60x40 lossis 80x60 mm, koj yuav tsum tau yuavstraps rau fastening kauj ruam. Nws tseem yog dov hlau nrog ib qho square hla ntu thiab qhov loj ntawm 25x25 lossis 30x30 mm.
Cov kauj ruam feem ntau yog ua los ntawm cov laug cam. Lawv yuav tsum tau ruaj, muaj ib tug tuab ntawm tsawg kawg yog 4 cm. Lawv tsau rau jumpers nrog tus kheej tapping screws. Lub mount zoo li zoo nkauj thaum siv cov khoom siv zais. Cov no, piv txwv li, tuaj yeem yog tus kheej tapping screws ntawm Fisher TB system. Lawv qhov loj me yog xaiv raws li qhov ntev ntawm cov kav dej thiab lub thickness ntawm cov laug cam. Cov ntsia hlau yuav tsum tau hla cov hlau rungs thiab 2/3 ntawm qhov siab ntawm cov ntoo.
Txij li cov ntaiv los ntawm cov yeeb nkab profile yuav welded nrog koj tus kheej tes, koj yuav tsum tau npaj lub inverter. Yog hais tias tus tswv tsis paub yuav ua li cas siv nws, koj yuav tsum xyaum ua tej yam tsis tsim nyog ntawm cov hlau workpiece. Nws yog ib qho tseem ceeb uas yuav tsum tau nyeem cov chaw tsim khoom siv vuam cov lus qhia ua ntej pib ua haujlwm.
Ntxiv rau lub inverter, koj yuav tsum tau yuav lub tshuab sib tsoo thiab lub taub hau rau nws (rau kaum txiav ntawm cov hlau thiab ua cov seams tom qab vuam). Koj tseem yuav xav tau lub laum hluav taws xob thiab lub hau ntswj, xyaum ua hlau thiab ntoo, jigsaw. Yog hais tias cov laug cam tsis tau sanded, lawv tau ib tug tshwj xeeb nozzle thiab voj voog nrog loj thiab me abrasive rau ib tug grinder los yog laum. Txhawm rau txuas cov txheej txheem kom raug, koj yuav tsum siv lub clamp.
Kosoura los ua ke
Txhawm rau sib sau cov hlau staircase nrog koj tus kheej txhais tes los ntawm cov yeeb nkab profile, koj yuav tsum tau txuas cov ntsiab lus ntawm cov hlua. Nws cov qauv tsim tau tsim nyob rau theem kev npaj.kev tsim kho. Raws li daim duab kos, tus lej yuav tsum tau suav nrog. Lawv yuav tsum muaj qhov ntev xam raws li txoj kev npaj.
Txiav cov ntsiab lus ntawm kosour kom lawv sib koom ua ib lub kaum sab xis. Ua li no, cov hlau yog txiav nrog ib tug grinder ntawm lub kaum sab xis ntawm 45º. Ua ntej txiav cov kav dej, kev ua haujlwm zoo yog ua tiav. Txij li thaum lub load tseem ceeb yuav ua rau cov yeeb nkab hauv cov txheej txheem ntawm kev tsim kev txiav, nws yuav tsum tau clamped rau hauv lub vise. Tom qab ua qhov tseeb markup (nws yog qhov zoo dua los kuaj xyuas ob peb zaug), lub tshuab txiav txiav.
Ntxiv rau ntawm lub rooj sib dhos, cov kab tau kos raws li cov khoom npaj tau nteg tawm. Koj yuav tsum muab lawv ua ke kom koj tau lub kaum sab xis.
Yog tias qhov sib txawv me me tshwm ntawm qhov chaw, lawv cov npoo raug kho. Ua li no, siv lub grinder nrog lub sib tsoo log. Koj ua tsis tau ib txoj kev txiav tshiab. Nws tsuas yog tsim nyog los ntxuav cov npoo, coj lawv mus rau qhov zoo. Cov khoom npaj tau muab tso rau ntawm ib lub rooj sib dhos. Lawv ruaj khov kho nrog clamps. Tom ntej no, ib zaug ntxiv xyuas cov kab qhov ntev ntawm workpieces, nrog rau qhov perpendicularity ntawm tag nrho cov ces kaum. Ua ntej lawv txuas nrog, koj tuaj yeem hloov kho me me. Thaum tag nrho cov ntsiab lus raug txiav, ua kom zoo thiab rov kuaj xyuas dua, koj tuaj yeem mus rau kauj ruam tom ntej.
Ua ntej, cov khoom npaj ntawm cov hlua khi yog pointwise welded ua ke. Tom ntej no, cov qauv yog tig dua thiab cov txheej txheem tib yam yog ua nyob rau sab nraub qaum. Tom qab ntawd, koj tuaj yeem fasten tag nrho cov ntsiab lus nrog cov khoom sib khi. Nws yog coj los ntawm lub ces kaum mus rau qhov chaw. Cov seams yog ntxuav ntawm slag, kho nrog ib tug grinder. Cov hlua raug kho nrog xim rau hlau.
txhim kho stairs
Thaum sib sau tus ntaiv los ntawm cov yeeb nkab profile nrog koj tus kheej tes, koj yuav tsum tau kuaj ob txoj hlua. Lawv muab tso ua ke, xyuas qhov sib npaug ntawm txhua lub ntsiab lus. Ua kev kho yog tias tsim nyog. Tsis tas li ntawd, ob qho tib si kosour yog txuas rau ntawm qhov chaw hauv pem teb thiab qab nthab. Yog tias tus ntaiv hla mus ze ntawm phab ntsa loj, ib qho ntawm cov kev txhawb nqa sib dhos tau tsau rau nws siv cov thauj tog rau nkoj tshwj xeeb.
Yog tias tus qauv tsim muaj rau cov rooj sib tham, cov ntawv txhawb nqa tau nruab rau hauv lawv.
Thaum sib dhos tus ntaiv los ntawm cov yeeb nkab profile nrog koj tus kheej txhais tes, koj yuav tsum tau vuam kev txhawb nqa rau cov kauj ruam los ntawm cov kav dej nyias nyias. Cov seams yog ntxuav nrog cov khoom zoo, thiab cov thav duab tiav yog pleev xim rau nrog ib qho tshwj xeeb compound.
Qhov yog drilled rau ntawm qhov sib txuas ntawm cov hlua khi thiab cov qauv tsim rau cov kauj ruam. Txoj kab uas hla yuav tsum yog 9 hli. Ib kauj ruam yuav tsum muaj 4 qhov zais cia thauj tog rau nkoj (2 ntawm txhua sab).
Kev teeb tsa tiav
Thaum koj ua tiav cov ntaiv los ntawm cov yeeb nkab profile nrog koj tus kheej tes, koj yuav tsum tau nruab cov thauj tog rau nkoj hauv qhov npaj. Cov kais dej yog qhia nrog lub taub hau. Lub rooj tsavxwm yog leveled rau ntawm qhov npaj ntawm tus ncej. Tus tswv sawv ntawm nws kom lub qhov ntawm cov kais dej tau luam tawm ntawm sab nraub qaum. Lub rooj tsavxwm yog tig thiab qhov nrog txoj kab uas hla ntawm 14 hli thiab qhov tob ntawm 25 hli yog drilled raws li cov cim tsim.
Cov khoom yas ntawm cov thauj tog rau nkoj yog muab tso rau hauv lub qhov ntawm cov hlau ncej. Nyob rau hauv lawv nrog ib tug screwdriverntsia hlau qhov chaw ntawm lub latch. Ib lub rooj tsavxwm tau teeb tsa rau ntawm lawv, lub qhov uas tau ntim nrog cov kua nplaum ntoo. Nias nias rau lub hauv paus.
Tom qab ntawd nruab lub railing. Ua li no, balusters yog thawj welded. Railings yog ntsia rau saum lawv. Hauv kev xaus, kev ua tiav ntawm cov qauv yog nqa tawm. Welds raug ntxuav thiab hauv av, thiab nws yog ntshaw kom pleev xim rau cov hlau ntawm cov qauv.
