Hauv tsev ua tom qab xyoo 1930, ntau yuav muaj kab noj hniav, uas yog qhov chaw khoob ntawm phab ntsa sab hauv thiab sab nraud. … Qhov kev tsom xam yog xav paub ntxiv txog cov phab ntsa ntawm cov tsev uas tau tsim nyob nruab nrab ntawm xyoo 1930s thiab nruab nrab xyoo 1970s uas cov phab ntsa tau tsim tsis muaj kev rwb thaiv tsev, ua rau cov kab noj hniav.
Puas yog xyoo 1930 lub tsev kab noj hniav?
Raws li peb cov nqi hluav taws xob nce ntxiv, nws yog qhov zoo kom paub lub tsev xyoo 1930 tuaj yeem hloov kho kom koj sov kom tau nyiaj tsawg dua. Cov phab ntsa yog ua cov phab ntsa kab noj hniav, qhov no txhais tau tias lawv yog cib rau sab nraud, ces muaj qhov chaw thiab lwm phab ntsa los yog pob zeb thaiv sab hauv.
Thaum twg cov tsev ua nrog kab noj hniav?
Cavity phab ntsa tsim tau nthuav tawm hauv tebchaws United Kingdom thaum the 19th century thiab tau siv dav hauv xyoo 1920. Hauv qee qhov piv txwv thaum ntxov, pob zeb tau siv los khi ob daim tawv nqaij ua ke, thaum nyob rau xyoo pua 20th hlau tau siv.
Lub tsev xyoo 1930 ua li cas?
Txawm tias lig dhau xyoo 1930s qee lub tsev tseem ua tau nrog cov phab ntsa zoo (ib cib tuab). Mortar feem ntau yog txiv qaub raws li, qee zaum ntsuas nrog cov cement. DPCs tuaj yeem yog cov hlau lead-cored bitumen coated, slate, asph alt, thiab, rau kab rov tav DPCs nkaus xwb, cov cements tsis muaj dej thiab lub suab ntuj (los ntawm cov thee).
Koj qhia li cas yog lub tsev muaj kab noj hniav?
Tej phab ntsa
Yog tias cov pob zeb tau npog lawm, koj tuaj yeem qhia tau los ntawm kev ntsuas qhov dav ntawm phab ntsa. Xam lub qhov rais lossis qhov rooj ntawmib qho ntawm koj cov phab ntsa sab nraud: Yog tias phab ntsa cib ntau dua 260mm tuab ces nws yuav muaj kab noj hniav. Lub phab ntsa nqaim yog qhov ruaj khov.
