\u0110i \u0111\u00f4i v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a vi\u1ec7c x\u00e2y d\u1ef1ng th\u00e0nh ph\u1ed1, r\u1ea5t nhi\u1ec1u nh\u00e0 cao t\u1ea7ng m\u1ecdc l\u00ean, thang m\u00e1y c\u0169ng do \u0111\u00f3 m\u00e0 tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 l\u00ean cao kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c trong \u0111\u1eddi s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi. D\u00f9 l\u00e0 s\u1ed1ng trong nh\u1eefng ki\u1ebfn tr\u00fac cao t\u1ea7ng hay l\u00e0m vi\u1ec7c \u1edf nh\u1eefng cao \u1ed1c, ho\u1eb7c \u0111i mua h\u00e0ng \u1edf c\u00e1c c\u1eeda h\u00e0ng l\u1edbn, \u0111\u1ebfn \u0103n \u1edf c\u00e1c kh\u00e1ch s\u1ea1n cao sang \u0111\u1ec1u c\u1ea7n \u0111\u1ebfn c\u00e1c c\u1ea7u thang m\u00e1y l\u00ean xu\u1ed1ng t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u1ee5c v\u1ee5 b\u1ea1n.<\/p>\n\n\n\n
V\u1eady th\u00ec thang m\u00e1y l\u00e0m vi\u1ec7c nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
\u00dd t\u01b0\u1edfng x\u00e2y d\u1ef1ng thang m\u00e1y \u0111\u01b0\u1ee3c g\u1ee3i \u00fd t\u1eeb vi\u1ec7c l\u1ea5y n\u01b0\u1edbc \u1edf d\u01b0\u1edbi gi\u1ebfng r\u1ea5t s\u00e2u l\u00ean b\u1eb1ng d\u00e2y cu\u1ed1n r\u00f2ng r\u1ecdc, v\u00ec v\u1eady kho\u1ea3ng kh\u00f4ng gian \u0111\u1eb7t thang m\u00e1y ki\u1ec3u bu\u1ed3ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 gi\u1ebfng thang m\u00e1y. \u1ede n\u01b0\u1edbc Ph\u00e1p, ngay t\u1eeb h\u01a1n 300 n\u0103m tr\u01b0\u1edbc, ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ebf t\u1ea1o m\u1ed9t lo\u1ea1i “gh\u1ebf bay”, n\u00f3 \u0111\u01b0\u1ee3c bu\u1ed9c v\u00e0o m\u1ed9t s\u1ee3i d\u00e2y th\u1eebng, m\u1ed9t \u0111\u1ea7u d\u00e2y th\u1eebng bu\u1ed9c qua m\u1ed9t r\u00f2ng r\u1ecdc \u0111\u1eb7t \u1edf tr\u00ean \u0111\u1ec9nh nh\u00e0, n\u1ed1i li\u1ec1n v\u1edbi m\u1ed9t v\u1eadt n\u1eb7ng \u0111\u1ec3 gi\u1eef c\u00e2n b\u1eb1ng. Ng\u01b0\u1eddi ng\u1ed3i tr\u00ean gh\u1ebf t\u1ef1a, c\u00f3 th\u1ec3 l\u00e0m cho gh\u1ebf bay l\u00ean xu\u1ed1ng b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt n\u1eb7ng. \u0110\u00f3 l\u00e0 h\u00ecnh th\u1ee9c ban \u0111\u1ea7u c\u1ee7a thang m\u00e1y.<\/p>\n\n\n\n
V\u1ec1 sau, ng\u01b0\u1eddi ta d\u00f9ng thang m\u00e1y thu\u1ef7 l\u1ef1c v\u00e0 m\u00e1y b\u01a1m n\u01b0\u1edbc l\u00e0m \u0111\u1ed9ng l\u1ef1c k\u00e9o thang m\u00e1y l\u00ean. N\u0103m 1850, n\u01b0\u1edbc M\u1ef9 xu\u1ea5t hi\u1ec7n chi\u1ebfc thang m\u00e1y \u0111\u1ea7u ti\u00ean ki\u1ec3u m\u00e1y c\u1ea9u b\u1eb1ng t\u1eddi, nh\u01b0ng v\u00ec l\u00fac \u0111\u00f3 ch\u01b0a c\u00f3 d\u00e2y c\u00e1p th\u00e9p, thang m\u00e1y k\u00e9o b\u1eb1ng d\u00e2y gai ch\u1ec9 c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 v\u1eadn chuy\u1ec3n h\u00e0ng ho\u00e1, ch\u1edf ng\u01b0\u1eddi kh\u00f4ng an to\u00e0n. M\u1ea5y n\u0103m sau, chi\u1ebfc thang m\u00e1y ch\u1edf ng\u01b0\u1eddi \u0111\u1ea7u ti\u00ean ra \u0111\u1eddi, n\u00f3 \u0111\u01b0\u1ee3c l\u1eafp m\u1ed9t thi\u1ebft b\u1ecb an to\u00e0n m\u1edbi, c\u00f3 m\u00f3c c\u00e2u b\u1eb1ng kim lo\u1ea1i, trong tr\u01b0\u1eddng h\u1ee3p d\u00e2y c\u00e1p b\u1ecb \u0111\u1ee9t n\u00f3 c\u00f3 th\u1ec3 g\u0103m v\u00e0o qu\u1ef9 \u0111\u1ea1o v\u1eadn h\u00e0nh c\u1ee7a thang m\u00e1y, \u0111\u1ec1 ph\u00f2ng thang m\u00e1y b\u1ecb r\u01a1i t\u1ef1 do.<\/p>\n\n\n\n
Tr\u00ean \u0111\u1ec9nh c\u1ee7a gi\u1ebfng thang m\u00e1y ki\u1ec3u bu\u1ed3ng hi\u1ec7n nay c\u00f3 l\u1eafp \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, do b\u1ed9 ph\u1eadn th\u0103ng b\u1eb1ng th\u00f4ng qua d\u00e2y c\u00e1p th\u00e9p c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 cao \u0111\u1ec3 k\u00e9o bu\u1ed3ng thang l\u00ean xu\u1ed1ng. B\u00ean trong c\u1ea7u thang m\u00e1y c\u00f2n l\u1eafp c\u00e1c thi\u1ebft b\u1ecb an to\u00e0n nh\u01b0 m\u00e1y gi\u1ea3m t\u1ed1c, k\u00ecm an to\u00e0n v\u00e0 \u0111\u1ec7m ho\u00e3n xung, cho d\u00f9 d\u00e2y c\u00e1p th\u00e9p \u0111\u1ed9t nhi\u00ean b\u1ecb \u0111\u1ee9t, bu\u1ed3ng thang m\u00e1y c\u0169ng kh\u00f4ng th\u1ec3 tr\u1ef1c ti\u1ebfp r\u01a1i xu\u1ed1ng \u0111\u00e1y gi\u1ebfng.<\/p>\n\n\n\n
Lo\u1ea1i thang m\u00e1y d\u1ed1c c\u00f3 tay v\u1ecbn t\u1ef1 \u0111\u1ed9ng l\u1ea1i l\u00e0 m\u1ed9t lo\u1ea1i thang m\u00e1y cu\u1ed1n c\u1ee1 l\u1edbn, th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf c\u00e1c trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i. V\u1ec1 h\u00ecnh th\u1ee9c, lo\u1ea1i c\u00f4ng c\u1ee5 ch\u1edf kh\u00e1ch “t\u1ef1 bi\u1ebft \u0111i” n\u00e0y c\u00e0ng g\u1ea7n g\u0169i v\u1edbi h\u00ecnh d\u1ea1ng b\u00ean ngo\u00e0i c\u1ee7a c\u1ea7u thang th\u01b0\u1eddng c\u1ee7a nh\u00e0 cao t\u1ea7ng.<\/p>\n\n\n\n
Lo\u1ea1i thang cu\u1ed1n n\u00e0y do nhi\u1ec1u b\u1eadc thang ho\u1ea1t \u0111\u1ed9ng h\u1ee3p th\u00e0nh, b\u00ean trong c\u00f3 l\u1eafp d\u00e2y x\u00edch, r\u00f2ng r\u1ecdc nh\u1ecf v\u00e0 \u0111\u01b0\u1eddng d\u1eabn, c\u00f3 th\u1ec3 duy tr\u00ec cho m\u1eb7t nghi\u00eang c\u1ee7a c\u1ea7u thang ch\u1ea1y l\u00ean theo ki\u1ec3u c\u1ea7u thang th\u01b0\u1eddng. Tr\u00ean \u0111\u1ec9nh c\u1ee7a thang cu\u1ed1n, \u0111\u01b0\u1eddng d\u1eabn c\u1ee7a b\u00e1nh sau h\u1ea1 th\u1ea5p d\u1ea7n, khi\u1ebfn cho c\u00e1c b\u1eadc thang tr\u01b0\u1edbc v\u00e0 sau d\u1ea7n d\u1ea7n g\u1ea7n nh\u01b0 b\u1eb1ng ph\u1eb3ng, khi\u1ebfn cho h\u00e0nh kh\u00e1ch l\u00ean xu\u1ed1ng c\u1ea7u thang thu\u1eadn ti\u1ec7n d\u1ec5 d\u00e0ng. Thang cu\u1ed1n t\u1ef1 \u0111\u1ed9ng c\u00f3 tay v\u1ecbn c\u00f3 th\u1ec3 chuy\u1ec3n v\u1eadn v\u00f2ng \u0111i v\u00f2ng l\u1ea1i, do \u0111\u00f3 tuy t\u1ed1c \u0111\u1ed9 kh\u00f4ng nhanh, nh\u01b0ng kh\u1ea3 n\u0103ng chuy\u1ec3n t\u1ea3i l\u1ea1i r\u1ea5t l\u1edbn. Hi\u1ec7n nay, ng\u01b0\u1eddi ta c\u00f2n thi\u1ebft k\u1ebf<\/a> thang cu\u1ed1n t\u1ef1 \u0111\u1ed9ng c\u00f3 tay v\u1ecbn m\u1edbi, l\u00ean xu\u1ed1ng ki\u1ec3u xo\u1eafn \u1ed1c. Ngo\u00e0i ra c\u00f2n lo\u1ea1i thang cu\u1ed1n c\u00f3 tay v\u1ecbn ch\u1ea1y theo chi\u1ec1u n\u1eb1m ngang v\u1edbi kho\u1ea3ng c\u00e1ch d\u00e0i d\u00f9ng \u0111\u1ec3 ch\u1edf h\u00e0nh kh\u00e1ch \u1edf s\u00e2n bay, m\u1ed7i khi h\u00e0nh kh\u00e1ch ra kh\u1ecfi m\u00e1y bay ch\u1ec9 c\u1ea7n b\u01b0\u1edbc v\u00e0o c\u1ea7u thang m\u00e1y l\u00e0 c\u00f3 th\u1ec3 nhanh ch\u00f3ng \u0111i th\u1eb3ng ra c\u1eeda s\u00e2n bay.<\/p>\n\n\n\n T\u1eeb kh\u00f3a: Thang m\u00e1y; Thang cu\u1ed1n.<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110i \u0111\u00f4i v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a vi\u1ec7c x\u00e2y d\u1ef1ng th\u00e0nh ph\u1ed1, r\u1ea5t nhi\u1ec1u nh\u00e0 cao t\u1ea7ng m\u1ecdc l\u00ean, thang m\u00e1y c\u0169ng do \u0111\u00f3 m\u00e0 tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 l\u00ean cao kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c trong \u0111\u1eddi s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi. D\u00f9 l\u00e0 s\u1ed1ng trong nh\u1eefng ki\u1ebfn tr\u00fac cao t\u1ea7ng hay l\u00e0m vi\u1ec7c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,16],"tags":[],"class_list":["post-8947","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-ky-thuat"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8947"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8947\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}