Lapho ubeka izindonga ezincaneamapayipi ensimbi engagqwali, kufanele zifakwe ngemva kokuba imisebenzi yomphakathi isiqediwe.Ngaphambi kokufaka, okokuqala, hlola ukuthi indawo yembobo egodliwe ilungile yini.

Uma ubeka amapayipi ensimbi engenasici anezindonga ezincane, ibanga phakathi kwezisekelo ezigxilile akufanele libe ngaphezu kuka-15mm.Ibanga phakathi kwezisekelo ezingaguquki zamapayipi amanzi ashisayo kufanele linqunywe ngokuya ngenani lokunwetshwa kokushisa okushisayo kwepayipi kanye nesinxephezelo esivumelekile samajoyinti okunwetshwa.Ukwesekwa okungaguquki kufanele kusethwe kububanzi obuguquguqukayo, igatsha, isixhumi esibonakalayo, kanye nezinhlangothi zombili zodonga oluthwele kanye ne-floor slab.Ukufakwa kokusekela okugudlukayo kwamapayipi ensimbi engenasici anezindonga ezincane kuzohlangabezana nezidingo zokucaciswa kwedizayini nemidwebo.

Izinsimbi zamapayipi ensimbi noma iziphanyeko kufanele zisetshenziselwe ukulungisa amapayipi ensimbi engenasici anezindonga ezincane ezikhipha amanzi nasezindaweni zokusabalalisa amanzi;izinsimbi zamapayipi noma iziphanyeko kufanele zibekwe ebangeni elingama-40-80mm ukusuka kokufakwayo.

Lapho ubeka amapayipi ensimbi engenasici anezindonga ezincane, amapayipi e-casing kufanele afakwe lapho amapayipi edlula phansi.Amapayipi epulasitiki kufanele asetshenziselwe ukufaka amapayipi;amapayipi ensimbi kufanele asetshenziswe lapho uwela uphahla.Amapayipi e-casing kufanele abe phezulu ngo-50mm kunophahla kanye nomhlabathi, futhi izinyathelo eziqinile zokuvikela amanzi kufanele zithathwe.Emapayipini afihliwe, ukuhlolwa kwengcindezi kanye namarekhodi okwamukela afihliwe azokwenziwa ngaphambi kokuvalwa.Ngemva kokuphumelela ukuhlolwa kwengcindezi nokuthatha izinyathelo zokuvikela ukugqwala, udaka lwesimende lwe-M7.5 lungasetshenziselwa ukugcwalisa.

Lapho ubeka amapayipi ensimbi engenasici anezindonga ezincane, akumele kube khona ukugoba nokuhlanekezela kwe-axial, futhi kungabikho ukulungiswa okuyimpoqo lapho udlula ezindongeni noma phansi.Uma kuhambisana namanye amapayipi, ibanga lokuvikela kufanele ligcinwe njengoba kudingeka.Uma umklamo ungacacisiwe, ibanga elicacile akufanele libe ngaphansi kuka-100mm.Uma amapayipi ehambisana, ipayipi lensimbi engenasici enodonga oluncane olusemseleni wamapayipi kufanele lihlelwe ngaphakathi kwepayipi lensimbi.