Wannan shine ƙirar fasahar bangon labule a baya. An shigar da bangon yanki guda. Yawancin lokaci, ana shigar da membobin mullion (wanda shine memba na tsaye) da farko, bi da bi da membobin transom (wanda shine memba na dogo a kwance), sannan a ƙarshe rukunin glazing ko taga. Koyaya, a cikin ƙira masu ƙaran layin kwance ana iya canza tsarin don fara shigar da manyan maɗaukakiyar. A kowane hali, membobin transom da mullion galibi suna da dogon sassan da aka tsara don ko dai a katse su ko kuma a tsawaita su ta hanyar mahadar su. An yi amfani da tsarin bangon sanda da yawa a farkon shekarun haɓaka bangon labulen ƙarfe, kuma har yanzu ana amfani da shi sosai cikin ingantattun nau'ikan. Wasu 'yan kwangila suna la'akari da shi ya fi sauran tsarin.
Siffofin wannan tsarin sune ƙarancin jigilar kayayyaki da farashin sarrafawa, saboda ƙarancin girma, da kuma gaskiyar cewa yana ba da damar ɗan daidaita girman girman yanayin yanayi. Lalacewarsa shine wajibcin taro a wurin ginin, maimakon a ƙarƙashin yanayin masana'anta, kuma gaskiyar cewa kafin glazing ba zai yiwu ba.
Framing Extrusions ana samunsu ta kasuwanci don haka buƙatar biyan sabon mutu ko bayanin martaba.
Yawancin dan kwangilar facade sun saba da tsarin.
Dace da shaguna da ƙananan wurare.
Tsarin sanda shine ƙirar farko na fasahar bangon labule. An shigar da bangon guntu-guntu, tare da mambobi na mullion (memba na tsaye) an fara shigar da su, sannan kuma membobin transom (memba na layin dogo a kwance), sannan a ƙarshe, raka'o'in glazing ko taga.
Koyaya, yana iya canza tsarin da farko don shigar da manyan transoms a cikin ƙirar da ke ƙara ƙarar layin kwance. A kowane hali, ma'aikatan transom da mullion galibi suna da tsayin daka da aka tsara don katsewa ko tsawaita su a mahadar su.
An yi amfani da tsarin bangon sanda sosai a farkon-zuwa tsakiyar karni na ashirin don gine-ginen ofis, bankuna, da sauran gine-ginen kasuwanci. Fa'idodinsa sun haɗa da sassauƙa a cikin ƙira da ikon ɗaukar canje-canje yayin gini. Koyaya, tsarin sanda yana da rashin amfani da yawa. Ya fi ƙarfin aiki kuma don haka ya fi sauran tsarin bangon labule kuma ya fi sauƙi ga iska da lodin girgizar ƙasa. Bugu da ƙari, haɗin gwiwa tsakanin mambobi ne masu yuwuwar tushen shigar ruwa.
Tsarin sanda ba shine mafi mashahuri zaɓi don gina bangon labule ba, amma har yanzu ana amfani dashi a wasu yanayi. Lokacin da aikin yana buƙatar babban matakin gyare-gyare ko tsarin ginin ba zai iya tallafawa nauyin tsarin bangon labule na zamani ba, tsarin sanda na iya zama mafi kyawun zaɓi.
Tsarin ya ƙunshi ƙirƙira abubuwan extrusions na kasuwanci, don haka babu buƙatar biyan sabon mutu ko bayanin martaba. Yawancin masu kwangilar facade sun saba da wannan tsarin, wanda ya dace da shaguna da ƙananan wurare.
Rashin hasaransa shine wajibcin taro akan wurin ginin maimakon ƙarƙashin yanayin masana'anta, kuma pre-glazing ba zai yiwu ba. Koyaya, tsarin yana da ƙarancin jigilar kayayyaki da tsadar sarrafawa, saboda ƙarancin girma, da kuma yadda yake ba da izinin daidaita girman girman yanayin yanayin rukunin yanar gizon ya sa ya zama sanannen zaɓi don ayyuka da yawa.