G\u00e1c l\u1eedng l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p t\u1ea1m th\u1eddi \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch s\u1eed d\u1ee5ng tr\u00ean m\u1ed9t m\u1eb7t b\u1eb1ng v\u00e0 chi\u1ec1u cao h\u1ea1n ch\u1ebf. Ng\u01b0\u1eddi ta th\u01b0\u1eddng x\u00e2y nh\u00e0 m\u1ed9t t\u1ea7ng c\u00f3 chi\u1ec1u cao t\u1ea7ng kho\u1ea3ng 5,4m-6m. M\u1ed9t ph\u1ea7n c\u1ee7a m\u1eb7t b\u1eb1ng n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m g\u00e1c l\u1eedng (hay c\u00f2n g\u1ecdi l\u00e0 g\u00e1c x\u00e9p) chia \u0111\u00f4i chi\u1ec1u cao t\u1ea7ng ra th\u00e0nh 3m+2,4 \u0111\u1ebfn 3m chi\u1ec1u cao m\u1ed7i t\u1ea7ng. Gi\u1ea3i ph\u00e1p n\u00e0y gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed x\u00e2y d\u1ef1ng ban \u0111\u1ea7u \u0111\u1ec3 d\u00e0nh ti\u1ec1n x\u00e2y sau. V\u1ea5n \u0111\u1ec1 l\u00e0 n\u1ebfu c\u00f3 d\u1ef1 tr\u00f9 tr\u01b0\u1edbc, vi\u1ec7c th\u00eam t\u1ea7ng sau n\u00e0y v\u1eabn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng g\u1eafc l\u1eedng m\u00e0 kh\u00f4ng ph\u1ea3i ph\u00e1 \u0111i \u0111\u1ec3 l\u00ean t\u1ea7ng.<\/p>\n
N\u1ebfu gi\u1eef g\u00e1c l\u1eedng l\u1ea1i \u0111\u1ec3 l\u00ean t\u1ea7ng, vi\u1ec7c x\u00e2y nh\u00e0 l\u1ec7ch t\u1ea7ng s\u1ebd hay \u0111\u01b0\u1ee3c ngh\u0129 \u0111\u1ebfn. N\u00f4m na l\u00e0 t\u1eeb t\u1ea7ng 1 \u0111i 1 v\u1ebf thang l\u00ean g\u00e1c l\u1eedng, t\u1eeb \u0111\u00f3 \u0111i ti\u1ebfp moojt v\u1ebf thang n\u1eefa \u0111\u1ec3 l\u00ean t\u1ea7ng 2 c\u1ee7a ph\u1ea7n th\u00f4ng t\u1ea7ng khi c\u00f2n g\u00e1c l\u1eedng, r\u1ed3i l\u1ea1i \u0111i th\u00eam 1 v\u1ebf thang n\u1eefa \u0111\u1ec3 l\u00ean t\u1ea7ng tr\u00ean c\u1ee7a g\u00e1c l\u1eedng. C\u1ee9 th\u1ebf s\u1ebd h\u00ecnh th\u00e0nh ki\u1ec3u thi\u1ebft k\u1ebf l\u1ec7ch t\u1ea7ng, ki\u1ec3u tr\u01b0\u1edbc 2 t\u1ea7ng, sau 3 t\u1ea7ng.<\/p>\n
Thi\u1ebft k\u1ebf l\u1ec7ch t\u1ea7ng r\u1ea5t ph\u1ed5 bi\u1ebfn trong m\u1ed9t th\u1eddi gian tr\u01b0\u1edbc. Nay ki\u1ec3u thi\u1ebft k\u1ebf n\u00e0y \u00edt th\u1ea5y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng do c\u00e1c nh\u01b0\u1ee3c \u0111i\u1ec3m nh\u01b0: i) hai ph\u1ea7n l\u1ec7ch nhau kh\u00f4ng th\u1ec3 c\u00f9ng s\u1eed d\u1ee5ng v\u1ec7 sinh, kh\u00f4ng gian sinh ho\u1ea1t chung \u1edf c\u00f9ng m\u1ed9t t\u1ea7ng, m\u1ed9t n\u1eeda s\u1ebd ph\u1ea3i \u0111i m\u1ed9t v\u1ebf thang xu\u1ed1ng ho\u1eb7c l\u00ean \u0111\u1ec3 s\u1eed d\u1ee5ng. \u0110i\u1ec1u n\u00e0y v\u1eeba b\u1ea5t ti\u1ec7n v\u1eeba g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn giao ti\u1ebfp c\u1ee7a m\u1ecdi ng\u01b0\u1eddi trong nh\u00e0; ii) kh\u00f4ng gian sinh ho\u1ea1t chung b\u1ecb x\u00e9 l\u1ebb th\u00e0nh hai c\u1ed1t kh\u00e1c nhau, v\u1eeba kh\u00f4ng \u0111\u1eb9p, v\u1eeba h\u1ea1n ch\u1ebf vi\u1ec7c giao l\u01b0u c\u1ee7a c\u00e1c th\u00e0nh vi\u00ean trong gia \u0111\u00ecnh.<\/p>\n
Do \u0111\u00f3 kh\u00f4ng n\u00ean l\u00e0m nh\u00e0 ki\u1ec3u l\u1ec7ch t\u1ea7ng. Ph\u00e1t tri\u1ec3n ti\u1ebfp t\u1eeb nh\u00e0 c\u00f3 g\u00e1c l\u1eedng, ta c\u00f3 th\u1ec3 x\u00e2y ti\u1ebfp m\u1ed9t v\u1ebf thang n\u1eefa \u0111\u1ec3 l\u00ean m\u1ed9t s\u00e0n cao h\u01a1n s\u00e0n g\u00e1c l\u1eedng \u0111\u1ed9 1,8-2m. S\u00e0n n\u00e0y s\u1ebd r\u1ed9ng kh\u1eafp m\u1eb7t b\u1eb1ng nh\u00e0 \u0111\u1ec3 t\u1eeb \u0111\u00f3 ti\u1ebfp t\u1ee5c l\u00ean th\u00eam t\u1ea7ng n\u1ebfu c\u00f3 nhu c\u1ea7u m\u00e0 kh\u00f4ng c\u00f2n hi\u1ec7n t\u01b0\u1ee3ng l\u1ec7ch t\u1ea7ng. G\u00e1c l\u1eedng l\u00fac \u0111\u00f3 c\u00f2n l\u1ea1i chi\u1ec1u cao \u0111\u1ed9 1,8 – 2 m s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n th\u00e0nh kho, ph\u00f2ng l\u00e0m vi\u1ec7c ho\u1eb7c c\u00e1c ch\u1ee9c n\u0103ng kh\u00f4ng th\u01b0\u1eddng xuy\u00ean kh\u00e1c c\u1ee7a ng\u00f4i nh\u00e0.<\/p>\n","protected":false},"excerpt":{"rendered":"
G\u00e1c l\u1eedng l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p t\u1ea1m th\u1eddi \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch s\u1eed d\u1ee5ng tr\u00ean m\u1ed9t m\u1eb7t b\u1eb1ng v\u00e0 chi\u1ec1u cao h\u1ea1n ch\u1ebf. Ng\u01b0\u1eddi ta th\u01b0\u1eddng x\u00e2y nh\u00e0 m\u1ed9t t\u1ea7ng c\u00f3 chi\u1ec1u cao t\u1ea7ng kho\u1ea3ng 5,4m-6m. M\u1ed9t ph\u1ea7n c\u1ee7a m\u1eb7t b\u1eb1ng n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m g\u00e1c l\u1eedng (hay c\u00f2n g\u1ecdi l\u00e0 g\u00e1c x\u00e9p) chia \u0111\u00f4i chi\u1ec1u cao t\u1ea7ng ra th\u00e0nh 3m+2,4 \u0111\u1ebfn 3m chi\u1ec1u cao m\u1ed7i t\u1ea7ng. Gi\u1ea3i ph\u00e1p n\u00e0y gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed x\u00e2y d\u1ef1ng ban \u0111\u1ea7u \u0111\u1ec3 d\u00e0nh ti\u1ec1n x\u00e2y sau. V\u1ea5n \u0111\u1ec1 l\u00e0 n\u1ebfu c\u00f3 d\u1ef1 tr\u00f9 tr\u01b0\u1edbc, vi\u1ec7c th\u00eam t\u1ea7ng sau n\u00e0y v\u1eabn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng g\u1eafc l\u1eedng m\u00e0 kh\u00f4ng ph\u1ea3i ph\u00e1 \u0111i \u0111\u1ec3 l\u00ean t\u1ea7ng.<\/p>\n