{"id":190981,"date":"2026-05-11T22:58:54","date_gmt":"2026-05-11T15:58:54","guid":{"rendered":"https:\/\/maotrung.com\/blogs\/?p=190981"},"modified":"2026-05-19T23:00:46","modified_gmt":"2026-05-19T16:00:46","slug":"cach-tinh-m2-gach-80x80","status":"publish","type":"post","link":"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981","title":{"rendered":"C\u00e1ch t\u00ednh m2 g\u1ea1ch 80&#215;80 chu\u1ea9n nh\u1ea5t cho d\u1ef1 to\u00e1n 2026"},"content":{"rendered":"<p style=\"text-align: justify;\">Trong c\u00f4ng t\u00e1c b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng d\u1ef1 to\u00e1n (BOQ) v\u1eadt li\u1ec7u ho\u00e0n thi\u1ec7n n\u0103m 2026, sai s\u00f3t khi t\u00ednh to\u00e1n s\u1ed1 l\u01b0\u1ee3ng g\u1ea1ch l\u00e1t n\u1ec1n kh\u00f4ng ch\u1ec9 th\u00e2m h\u1ee5t ng\u00e2n s\u00e1ch m\u00e0 c\u00f2n ti\u1ec1m \u1ea9n r\u1ee7i ro k\u1ef9 thu\u1eadt l\u1edbn. N\u1ebfu t\u00ednh thi\u1ebfu g\u1ea1ch 80&#215;80, vi\u1ec7c nh\u1eadp b\u1ed5 sung r\u1ea5t d\u1ec5 g\u1eb7p t\u00ecnh tr\u1ea1ng kh\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t, d\u1eabn \u0111\u1ebfn sai l\u1ec7ch k\u00edch th\u01b0\u1edbc v\u00e0 m\u00e0u s\u1eafc tr\u00ean c\u00f9ng m\u1ed9t m\u1eb7t s\u00e0n. Ng\u01b0\u1ee3c l\u1ea1i, t\u00ednh th\u1eeba g\u00e2y l\u00e3ng ph\u00ed v\u1eadt t\u01b0. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p c\u00f4ng th\u1ee9c chu\u1ea9n x\u00e1c v\u1ec1 c\u00e1ch t\u00ednh m2 g\u1ea1ch 80&#215;80, k\u1ebft h\u1ee3p framework ki\u1ec3m so\u00e1t t\u1ef7 l\u1ec7 hao h\u1ee5t th\u1ef1c t\u1ebf, gi\u00fap ch\u1ee7 \u0111\u1ea7u t\u01b0 v\u00e0 nh\u00e0 th\u1ea7u ch\u1ed1t ch\u00ednh x\u00e1c kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_78 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#Nhung_diem_chinh\" >Nh\u1eefng \u0111i\u1ec3m ch\u00ednh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#1_Quy_cach_dong_goi_tieu_chuan_cua_gach_80%C3%9780\" >1. Quy c\u00e1ch \u0111\u00f3ng g\u00f3i ti\u00eau chu\u1ea9n c\u1ee7a g\u1ea1ch 80&#215;80<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#2_Cach_tinh_m2_gach_80x80cm_Tinh_so_luong_thung_gach_80%C3%9780_theo_dien_tich_san\" >2. C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh s\u1ed1 l\u01b0\u1ee3ng th\u00f9ng g\u1ea1ch 80&#215;80 theo di\u1ec7n t\u00edch s\u00e0n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#3_Framework_xac_dinh_ty_le_hao_hut_vat_lieu_thuc_te\" >3. Framework x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 hao h\u1ee5t v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#4_Cach_tinh_m2_gach_80x80cm_Tinh_khoi_luong_gach_80%C3%9780_lam_len_chan_tuong\" >4. C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng g\u1ea1ch 80&#215;80 l\u00e0m len ch\u00e2n t\u01b0\u1eddng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#5_Vi_du_thuc_tien_du_toan_vat_tu_gach_80%C3%9780_cho_phong_30m2\" >5. V\u00ed d\u1ee5 th\u1ef1c ti\u1ec5n d\u1ef1 to\u00e1n v\u1eadt t\u01b0 g\u1ea1ch 80&#215;80 cho ph\u00f2ng 30m2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#6_Mot_so_cau_hoi_thuong_gap_ve_dinh_muc_gach_80%C3%9780\" >6. M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 \u0111\u1ecbnh m\u1ee9c g\u1ea1ch 80&#215;80<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#61_Phong_dien_tich_bao_nhieu_thi_nen_lat_gach_80%C3%9780\" >6.1. Ph\u00f2ng di\u1ec7n t\u00edch bao nhi\u00eau th\u00ec n\u00ean l\u00e1t g\u1ea1ch 80&#215;80?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#62_Thi_cong_gach_80%C3%9780_co_bat_buoc_dung_ke_can_bang_khong\" >6.2. Thi c\u00f4ng g\u1ea1ch 80&#215;80 c\u00f3 b\u1eaft bu\u1ed9c d\u00f9ng ke c\u00e2n b\u1eb1ng kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#63_Gach_80%C3%9780_lat_nen_1_thung_bao_nhieu_vien_va_dien_tich_bao_nhieu_m2\" >6.3. G\u1ea1ch 80&#215;80 l\u00e1t n\u1ec1n 1 th\u00f9ng bao nhi\u00eau vi\u00ean v\u00e0 di\u1ec7n t\u00edch bao nhi\u00eau m2?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/cach-tinh-m2-gach-80x80-190981\/#64_Gach_80%C3%9780_co_phu_hop_cho_phong_khach_nho_duoi_20m2_khong\" >6.4. G\u1ea1ch 80&#215;80 c\u00f3 ph\u00f9 h\u1ee3p cho ph\u00f2ng kh\u00e1ch nh\u1ecf d\u01b0\u1edbi 20m2 kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Nhung_diem_chinh\"><\/span><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<blockquote>\n<ul>\n<li style=\"text-align: justify;\">Quy c\u00e1ch \u0111\u00f3ng g\u00f3i ti\u00eau chu\u1ea9n: 1 th\u00f9ng g\u1ea1ch 80x80cm g\u1ed3m 3 vi\u00ean, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng t\u1ed5ng di\u1ec7n t\u00edch 1.92m2.<\/li>\n<li style=\"text-align: justify;\">C\u00f4ng th\u1ee9c d\u1ef1 to\u00e1n: S\u1ed1 th\u00f9ng c\u1ea7n mua = (Di\u1ec7n t\u00edch s\u00e0n th\u1ef1c t\u1ebf \/ 1.92) + T\u1ef7 l\u1ec7 hao h\u1ee5t d\u1ef1 ph\u00f2ng.<\/li>\n<li style=\"text-align: justify;\">Lu\u00f4n l\u00e0m tr\u00f2n t\u0103ng l\u00ean th\u00e0nh s\u1ed1 th\u00f9ng ch\u1eb5n v\u00ec nh\u00e0 cung c\u1ea5p kh\u00f4ng b\u00e1n l\u1ebb vi\u00ean, gi\u00fap tr\u00e1nh r\u1ee7i ro l\u1ec7ch l\u00f4 s\u1ea3n xu\u1ea5t khi mua b\u1ed5 sung.<\/li>\n<li style=\"text-align: justify;\">\u0110\u1ecbnh m\u1ee9c hao h\u1ee5t: Ph\u00f2ng vu\u00f4ng v\u1ee9c c\u1ed9ng th\u00eam 3-5%; ph\u00f2ng nhi\u1ec1u g\u00f3c x\u00e9o ho\u1eb7c l\u00e1t ch\u00e9o ron b\u1eaft bu\u1ed9c c\u1ed9ng th\u00eam 8-10%.<\/li>\n<li style=\"text-align: justify;\">G\u1ea1ch 80&#215;80 ch\u1ec9 ph\u00f9 h\u1ee3p cho kh\u00f4ng gian tr\u00ean 20m2 ho\u1eb7c chi\u1ec1u r\u1ed9ng t\u1eeb 4m tr\u1edf l\u00ean \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ed1 l\u01b0\u1ee3ng \u0111\u01b0\u1eddng ron, m\u1edf r\u1ed9ng th\u1ecb gi\u00e1c.<\/li>\n<li style=\"text-align: justify;\">Y\u00eau c\u1ea7u s\u1eed d\u1ee5ng ke c\u00e2n b\u1eb1ng v\u00e0 n\u00eam ch\u1ed1t (1.5-2mm) khi thi c\u00f4ng \u0111\u1ec3 tri\u1ec7t ti\u00eau \u0111\u1ed9 mo (cong v\u00eanh) \u0111\u1eb7c th\u00f9 c\u1ee7a g\u1ea1ch kh\u1ed5 l\u1edbn.<\/li>\n<\/ul>\n<\/blockquote>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"1_Quy_cach_dong_goi_tieu_chuan_cua_gach_80%C3%9780\"><\/span><strong>1. Quy c\u00e1ch \u0111\u00f3ng g\u00f3i ti\u00eau chu\u1ea9n c\u1ee7a g\u1ea1ch 80&#215;80<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ec3 t\u00ednh to\u00e1n ch\u00ednh x\u00e1c, ng\u01b0\u1eddi l\u1eadp d\u1ef1 to\u00e1n c\u1ea7n n\u1eafm v\u1eefng quy c\u00e1ch \u0111\u00f3ng g\u00f3i <a href=\"https:\/\/maotrung.com\/gach?view=all&amp;gach-kich-thuoc=gach-kich-thuoc-80-x-80-cm\" target=\"_blank\" rel=\"noopener\">g\u1ea1ch 80&#215;80<\/a> t\u1eeb nh\u00e0 m\u00e1y. Th\u00f4ng s\u1ed1 n\u00e0y l\u00e0 c\u01a1 s\u1edf g\u1ed1c \u0111\u1ec3 quy \u0111\u1ed5i t\u1eeb di\u1ec7n t\u00edch m\u1eb7t b\u1eb1ng sang s\u1ed1 l\u01b0\u1ee3ng v\u1eadt t\u01b0 th\u1ef1c t\u1ebf.<\/p>\n<p style=\"text-align: justify;\">C\u00e1c th\u00f4ng s\u1ed1 ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng cho \u0111\u1ecbnh m\u1ee9c 1 th\u00f9ng <a href=\"https:\/\/maotrung.com\/gach\" target=\"_blank\" rel=\"noopener\">g\u1ea1ch<\/a> bao g\u1ed3m:<\/p>\n<ul style=\"text-align: justify;\">\n<li><strong>K\u00edch th\u01b0\u1edbc 1 vi\u00ean<\/strong>: 0.8m x 0.8m.<\/li>\n<li><strong>Di\u1ec7n t\u00edch 1 vi\u00ean<\/strong>: 0.8 x 0.8 = 0.64m2.<\/li>\n<li><strong>Quy c\u00e1ch \u0111\u00f3ng g\u00f3i<\/strong>: 1 th\u00f9ng g\u1ed3m 3 vi\u00ean g\u1ea1ch.<\/li>\n<li><strong>Di\u1ec7n t\u00edch 1 th\u00f9ng g\u1ea1ch<\/strong>: 0.64 x 3 = 1.92m2.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Khi thi c\u00f4ng th\u1ef1c t\u1ebf, vi\u1ec7c s\u1eed d\u1ee5ng ke c\u00e2n b\u1eb1ng s\u1ebd t\u1ea1o ra <a href=\"https:\/\/maotrung.com\/blogs\/kien-thuc-chung\/ron-gach-la-gi-47157\" target=\"_blank\" rel=\"noopener\">ron g\u1ea1ch<\/a> t\u1eeb 1.5mm \u0111\u1ebfn 2mm. Tuy nhi\u00ean, trong c\u00f4ng t\u00e1c b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng d\u1ef1 to\u00e1n, ch\u00fang ta b\u1ecf qua dung sai n\u00e0y v\u00e0 l\u00e0m tr\u00f2n theo di\u1ec7n t\u00edch 1 vi\u00ean chu\u1ea9n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u1eadt t\u01b0.<\/p>\n<figure id=\"attachment_190991\" aria-describedby=\"caption-attachment-190991\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190991\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-1.jpg\" alt=\"Quy c\u00e1ch \u0111\u00f3ng g\u00f3i ti\u00eau chu\u1ea9n c\u1ee7a g\u1ea1ch 80x80\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-1.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-1-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-1-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-1-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190991\" class=\"wp-caption-text\">Quy c\u00e1ch \u0111\u00f3ng g\u00f3i ti\u00eau chu\u1ea9n c\u1ee7a g\u1ea1ch 80&#215;80<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"2_Cach_tinh_m2_gach_80x80cm_Tinh_so_luong_thung_gach_80%C3%9780_theo_dien_tich_san\"><\/span><strong>2. C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh s\u1ed1 l\u01b0\u1ee3ng th\u00f9ng g\u1ea1ch 80&#215;80 theo di\u1ec7n t\u00edch s\u00e0n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1ch t\u00ednh s\u1ed1 l\u01b0\u1ee3ng th\u00f9ng g\u1ea1ch 800&#215;800, c\u00e1c k\u1ef9 s\u01b0 QS \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng t\u1ed5ng qu\u00e1t nh\u01b0 sau:<\/p>\n<p><strong>C\u00f4ng th\u1ee9c: S\u1ed1 th\u00f9ng = (T\u1ed5ng di\u1ec7n t\u00edch s\u00e0n &#8211; Di\u1ec7n t\u00edch kho\u1ea3ng tr\u1ed1ng) \/ 1.92<\/strong><\/p>\n<p style=\"text-align: justify;\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 quy tr\u00ecnh b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng chi ti\u1ebft:<\/p>\n<p style=\"text-align: justify;\"><strong>B\u01b0\u1edbc 1:<\/strong> T\u00ednh t\u1ed5ng di\u1ec7n t\u00edch m\u1eb7t s\u00e0n th\u1ef1c t\u1ebf c\u1ea7n \u1ed1p l\u00e1t.<\/p>\n<ul style=\"text-align: justify;\">\n<li><strong>\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c<\/strong>: Chi\u1ec1u d\u00e0i x Chi\u1ec1u r\u1ed9ng cho t\u1ed5ng th\u1ec3 kh\u00f4ng gian.<\/li>\n<li>B\u1eaft bu\u1ed9c tr\u1eeb \u0111i di\u1ec7n t\u00edch c\u00e1c h\u1ea1ng m\u1ee5c c\u1ed1 \u0111\u1ecbnh kh\u00f4ng l\u00e1t g\u1ea1ch nh\u01b0 h\u1ed9p gen k\u1ef9 thu\u1eadt, ch\u00e2n c\u1ea7u thang, ho\u1eb7c ch\u00e2n c\u1ed9t l\u1edbn.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>B\u01b0\u1edbc 2:<\/strong> L\u1ea5y t\u1ed5ng di\u1ec7n t\u00edch s\u00e0n v\u1eeba t\u00ednh chia cho \u0111\u1ecbnh m\u1ee9c 1 th\u00f9ng (1.92m2).<\/p>\n<p style=\"text-align: justify;\"><strong>B\u01b0\u1edbc 3:<\/strong> L\u00e0m tr\u00f2n k\u1ebft qu\u1ea3 \u0111\u1ec3 ra s\u1ed1 th\u00f9ng c\u1ea7n \u0111\u1eb7t h\u00e0ng.<\/p>\n<ul style=\"text-align: justify;\">\n<li>Nguy\u00ean t\u1eafc ng\u00e0nh x\u00e2y d\u1ef1ng: Lu\u00f4n l\u00e0m tr\u00f2n s\u1ed1 th\u00f9ng t\u0103ng l\u00ean.<\/li>\n<li>C\u00e1c nh\u00e0 ph\u00e2n ph\u1ed1i kh\u00f4ng x\u00e9 l\u1ebb th\u00f9ng g\u1ea1ch 80&#215;80 \u0111\u1ec3 b\u00e1n, vi\u1ec7c l\u00e0m tr\u00f2n l\u00ean gi\u00fap \u0111\u1ea3m b\u1ea3o kh\u00f4ng b\u1ecb thi\u1ebfu h\u1ee5t m\u1ed9t v\u00e0i vi\u00ean v\u00e0o ph\u00fat ch\u00f3t.<\/li>\n<\/ul>\n<figure id=\"attachment_190992\" aria-describedby=\"caption-attachment-190992\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190992\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-2.jpg\" alt=\"C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh s\u1ed1 l\u01b0\u1ee3ng th\u00f9ng g\u1ea1ch 80x80 theo di\u1ec7n t\u00edch s\u00e0n\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-2.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-2-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-2-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-2-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190992\" class=\"wp-caption-text\">C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh s\u1ed1 l\u01b0\u1ee3ng th\u00f9ng g\u1ea1ch 80&#215;80 theo di\u1ec7n t\u00edch s\u00e0n<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"3_Framework_xac_dinh_ty_le_hao_hut_vat_lieu_thuc_te\"><\/span><strong>3. Framework x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 hao h\u1ee5t v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Vi\u1ec7c \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc thu\u1ea7n t\u00fay ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 ch\u1ed1t BOQ v\u1eadt t\u01b0 ho\u00e0n thi\u1ec7n. \u0110\u1eb7c th\u00f9 c\u1ee7a k\u1ef9 thu\u1eadt l\u00e1t g\u1ea1ch kh\u1ed5 l\u1edbn l\u00e0 t\u1ef7 l\u1ec7 hao h\u1ee5t lu\u00f4n cao h\u01a1n c\u00e1c d\u00f2ng g\u1ea1ch nh\u1ecf nh\u01b0 60&#215;60.<\/p>\n<p style=\"text-align: justify;\">Nguy\u00ean nh\u00e2n ch\u00ednh \u0111\u1ebfn t\u1eeb vi\u1ec7c c\u1eaft m\u00f2i, bo g\u00f3c \u1edf c\u00e1c khu v\u1ef1c di\u1ec7n t\u00edch h\u1eb9p ho\u1eb7c c\u1ea1nh t\u01b0\u1eddng x\u00e9o. Ph\u1ea7n g\u1ea1ch 80&#215;80 d\u01b0 ra sau khi c\u1eaft th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7 k\u00edch th\u01b0\u1edbc \u0111\u1ec3 t\u1eadn d\u1ee5ng l\u1ea1i cho c\u00e1c v\u1ecb tr\u00ed kh\u00e1c, bu\u1ed9c ph\u1ea3i lo\u1ea1i b\u1ecf. \u0110\u1ec3 qu\u1ea3n tr\u1ecb r\u1ee7i ro thi\u1ebfu v\u1eadt t\u01b0, nh\u00e0 th\u1ea7u c\u1ea7n \u00e1p d\u1ee5ng \u0111\u1ecbnh m\u1ee9c hao h\u1ee5t chu\u1ea9n h\u00f3a d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<table class=\"border-collapse table-auto w-full my-4 aligncenter\" style=\"width: 800px; min-width: 75px;\" border=\"1\">\n<colgroup>\n<col style=\"min-width: 25px;\" \/>\n<col style=\"min-width: 25px;\" \/>\n<col style=\"min-width: 25px;\" \/><\/colgroup>\n<tbody>\n<tr class=\"border-b border-border\">\n<th class=\"border border-border bg-muted\/50 text-left font-semibold\" colspan=\"1\" rowspan=\"1\">\u0110\u1eb7c th\u00f9 m\u1eb7t b\u1eb1ng<\/th>\n<th class=\"border border-border bg-muted\/50 text-left font-semibold\" colspan=\"1\" rowspan=\"1\">T\u1ef7 l\u1ec7 hao h\u1ee5t c\u1ed9ng th\u00eam<\/th>\n<th class=\"border border-border bg-muted\/50 text-left font-semibold\" colspan=\"1\" rowspan=\"1\">Ghi ch\u00fa thi c\u00f4ng<\/th>\n<\/tr>\n<tr class=\"border-b border-border\">\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">Ph\u00f2ng vu\u00f4ng v\u1ee9c, \u00edt g\u00f3c c\u1ea1nh<\/td>\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">3% &#8211; 5%<\/td>\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">Ph\u00f9 h\u1ee3p kh\u00f4ng gian m\u1edf, k\u00edch th\u01b0\u1edbc ph\u00f2ng ch\u1eb5n theo kh\u1ed5 g\u1ea1ch.<\/td>\n<\/tr>\n<tr class=\"border-b border-border\">\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">Ph\u00f2ng nhi\u1ec1u c\u1ed9t, g\u00f3c x\u00e9o, ziczac<\/td>\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">5% &#8211; 7%<\/td>\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">Hao h\u1ee5t l\u1edbn do ph\u1ea3i c\u1eaft g\u1ecdt g\u1ea1ch n\u01b0\u01a1ng theo c\u1ea5u tr\u00fac b\u00ea t\u00f4ng c\u1ee9ng.<\/td>\n<\/tr>\n<tr class=\"border-b border-border\">\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">L\u00e1t ch\u00e9o ho\u1eb7c x\u1ebfp ron l\u1ec7ch<\/td>\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">8% &#8211; 10%<\/td>\n<td class=\"border border-border\" colspan=\"1\" rowspan=\"1\">B\u1eaft bu\u1ed9c c\u1eaft x\u00e9o m\u1ecdi vi\u00ean g\u1ea1ch gi\u00e1p ch\u00e2n t\u01b0\u1eddng, ph\u1ea7n d\u01b0 kh\u00f4ng th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_190993\" aria-describedby=\"caption-attachment-190993\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190993\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-3.jpg\" alt=\"Framework x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 hao h\u1ee5t v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-3.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-3-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-3-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-3-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190993\" class=\"wp-caption-text\">Framework x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 hao h\u1ee5t v\u1eadt li\u1ec7u th\u1ef1c t\u1ebf<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"4_Cach_tinh_m2_gach_80x80cm_Tinh_khoi_luong_gach_80%C3%9780_lam_len_chan_tuong\"><\/span><strong>4. C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng g\u1ea1ch 80&#215;80 l\u00e0m len ch\u00e2n t\u01b0\u1eddng<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Trong ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng ho\u00e0n thi\u1ec7n n\u0103m 2026, xu h\u01b0\u1edbng c\u1eaft <a href=\"https:\/\/maotrung.com\/gach-lat-nen\" target=\"_blank\" rel=\"noopener\">g\u1ea1ch l\u00e1t n\u1ec1n<\/a> \u0111\u1ec3 l\u00e0m len ch\u00e2n t\u01b0\u1eddng \u0111ang \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tri\u1ec7t \u0111\u1ec3. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap \u0111\u1ed3ng b\u1ed9 v\u00e2n g\u1ea1ch (shading), t\u1ea1o s\u1ef1 li\u1ec1n m\u1ea1ch v\u00e0 th\u1ea9m m\u1ef9 cho kh\u00f4ng gian.<\/p>\n<p style=\"text-align: justify;\">C\u00e1ch t\u00ednh s\u1ed1 l\u01b0\u1ee3ng g\u1ea1ch c\u1ea7n th\u00eam cho len ch\u00e2n t\u01b0\u1eddng nh\u01b0 sau:<\/p>\n<ul style=\"text-align: justify;\">\n<li><strong>T\u00ednh chu vi c\u1ea7n \u1ed1p len<\/strong>: (Chi\u1ec1u d\u00e0i + Chi\u1ec1u r\u1ed9ng) x 2.<\/li>\n<li>Tr\u1eeb \u0111i chi\u1ec1u r\u1ed9ng c\u1ee7a c\u00e1c khu v\u1ef1c c\u1eeda ra v\u00e0o, c\u1eeda ban c\u00f4ng.<\/li>\n<li>\u00c1p d\u1ee5ng t\u1ef7 l\u1ec7 quy \u0111\u1ed5i chuy\u00ean m\u00f4n: 1 vi\u00ean g\u1ea1ch 80&#215;80 th\u01b0\u1eddng c\u1eaft \u0111\u01b0\u1ee3c t\u1eeb 6 \u0111\u1ebfn 7 thanh len (chi\u1ec1u cao 10-12cm).<\/li>\n<li>L\u1ea5y t\u1ed5ng chi\u1ec1u d\u00e0i len chia cho 0.8m \u0111\u1ec3 ra s\u1ed1 vi\u00ean, sau \u0111\u00f3 c\u1ed9ng v\u00e0o kh\u1ed1i l\u01b0\u1ee3ng th\u00f9ng g\u1ea1ch c\u1ea7n \u0111\u1eb7t.<\/li>\n<\/ul>\n<figure id=\"attachment_190994\" aria-describedby=\"caption-attachment-190994\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190994\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-4.jpg\" alt=\"C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng g\u1ea1ch 80x80 l\u00e0m len ch\u00e2n t\u01b0\u1eddng\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-4.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-4-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-4-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-4-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190994\" class=\"wp-caption-text\">C\u00e1ch t\u00ednh m2 g\u1ea1ch 80x80cm: T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng g\u1ea1ch 80&#215;80 l\u00e0m len ch\u00e2n t\u01b0\u1eddng<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"5_Vi_du_thuc_tien_du_toan_vat_tu_gach_80%C3%9780_cho_phong_30m2\"><\/span><strong>5. V\u00ed d\u1ee5 th\u1ef1c ti\u1ec5n d\u1ef1 to\u00e1n v\u1eadt t\u01b0 g\u1ea1ch 80&#215;80 cho ph\u00f2ng 30m2<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ec3 h\u00ecnh dung r\u00f5 c\u00e1ch t\u00ednh s\u1ed1 l\u01b0\u1ee3ng g\u1ea1ch 80&#215;80 cho ph\u00f2ng kh\u00e1ch 30m2, ch\u00fang ta \u00e1p d\u1ee5ng framework tr\u00ean v\u00e0o d\u1ef1 to\u00e1n c\u00f4ng tr\u00ecnh gi\u1ea3 \u0111\u1ecbnh: ph\u00f2ng k\u00edch th\u01b0\u1edbc 5x6m, c\u1eeda ch\u00ednh r\u1ed9ng 2m, kh\u00f4ng gian vu\u00f4ng v\u1ee9c.<\/p>\n<p style=\"text-align: justify;\"><strong>B\u01b0\u1edbc 1:<\/strong> T\u00ednh di\u1ec7n t\u00edch m\u1eb7t s\u00e0n v\u00e0 s\u1ed1 th\u00f9ng c\u01a1 b\u1ea3n.<\/p>\n<ul style=\"text-align: justify;\">\n<li>Di\u1ec7n t\u00edch s\u00e0n: 5 x 6 = 30m2.<\/li>\n<li>S\u1ed1 th\u00f9ng c\u01a1 b\u1ea3n: 30 \/ 1.92 = 15.6 th\u00f9ng (L\u00e0m tr\u00f2n 16 th\u00f9ng).<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>B\u01b0\u1edbc 2:<\/strong> T\u00ednh hao h\u1ee5t m\u1eb7t b\u1eb1ng.<\/p>\n<ul style=\"text-align: justify;\">\n<li>Kh\u1ed1i l\u01b0\u1ee3ng hao h\u1ee5t (ch\u1ecdn m\u1ee9c 3% cho ph\u00f2ng vu\u00f4ng): 30 x 3% = 0.9m2.<\/li>\n<li>Quy \u0111\u1ed5i hao h\u1ee5t: 0.9 \/ 1.92 = 0.46 th\u00f9ng (L\u00e0m tr\u00f2n 1 th\u00f9ng d\u1ef1 ph\u00f2ng).<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>B\u01b0\u1edbc 3:<\/strong> T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng g\u1ea1ch l\u00e0m len t\u01b0\u1eddng.<\/p>\n<ul style=\"text-align: justify;\">\n<li>T\u1ed5ng chi\u1ec1u d\u00e0i len: (5 + 6) x 2 &#8211; 2 (c\u1eeda) = 20m.<\/li>\n<li>S\u1ed1 l\u01b0\u1ee3ng vi\u00ean g\u1ea1ch c\u1ea7n c\u1eaft: 20m \/ 0.8m = 25 vi\u00ean.<\/li>\n<li>Quy \u0111\u1ed5i ra th\u00f9ng: 25 \/ 3 = 8.3 th\u00f9ng (L\u00e0m tr\u00f2n 9 th\u00f9ng).<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>T\u1ed5ng k\u1ebft:<\/strong> BOQ t\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng \u0111\u1eb7t h\u00e0ng cho m\u1eb7t b\u1eb1ng n\u00e0y l\u00e0: 16 (s\u00e0n) + 1 (hao h\u1ee5t) + 9 (len) = 26 th\u00f9ng.<\/p>\n<figure id=\"attachment_190995\" aria-describedby=\"caption-attachment-190995\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190995\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-5.jpg\" alt=\"V\u00ed d\u1ee5 th\u1ef1c ti\u1ec5n d\u1ef1 to\u00e1n v\u1eadt t\u01b0 g\u1ea1ch 80x80 cho ph\u00f2ng 30m2\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-5.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-5-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-5-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-5-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190995\" class=\"wp-caption-text\">V\u00ed d\u1ee5 th\u1ef1c ti\u1ec5n d\u1ef1 to\u00e1n v\u1eadt t\u01b0 g\u1ea1ch 80&#215;80 cho ph\u00f2ng 30m2<\/figcaption><\/figure>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"6_Mot_so_cau_hoi_thuong_gap_ve_dinh_muc_gach_80%C3%9780\"><\/span><strong>6. M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 \u0111\u1ecbnh m\u1ee9c g\u1ea1ch 80&#215;80<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"61_Phong_dien_tich_bao_nhieu_thi_nen_lat_gach_80%C3%9780\"><\/span><strong>6.1. Ph\u00f2ng di\u1ec7n t\u00edch bao nhi\u00eau th\u00ec n\u00ean l\u00e1t g\u1ea1ch 80&#215;80?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Theo quy chu\u1ea9n thi\u1ebft k\u1ebf, g\u1ea1ch 80&#215;80 ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c ph\u00f2ng c\u00f3 chi\u1ec1u r\u1ed9ng t\u1eeb 4m tr\u1edf l\u00ean v\u00e0 t\u1ed5ng di\u1ec7n t\u00edch v\u01b0\u1ee3t m\u1ee9c 20m2. K\u00edch th\u01b0\u1edbc n\u00e0y gi\u00fap h\u1ea1n ch\u1ebf t\u1ed1i \u0111a vi\u1ec7c chia c\u1eaft \u0111\u01b0\u1eddng ron, t\u1ea1o c\u1ea3m gi\u00e1c m\u1edf r\u1ed9ng kh\u00f4ng gian v\u00e0 t\u0103ng \u0111\u1ed9 li\u1ec1n m\u1ea1ch cho c\u00f4ng tr\u00ecnh.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"62_Thi_cong_gach_80%C3%9780_co_bat_buoc_dung_ke_can_bang_khong\"><\/span><strong>6.2. Thi c\u00f4ng g\u1ea1ch 80&#215;80 c\u00f3 b\u1eaft bu\u1ed9c d\u00f9ng ke c\u00e2n b\u1eb1ng kh\u00f4ng?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Vi\u1ec7c s\u1eed d\u1ee5ng ke c\u00e2n b\u1eb1ng l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi thi c\u00f4ng g\u1ea1ch kh\u1ed5 l\u1edbn. C\u00e1c d\u00f2ng <a href=\"https:\/\/maotrung.com\/blogs\/kien-thuc-chung\/gach-granite-la-gi-47129\" target=\"_blank\" rel=\"noopener\">g\u1ea1ch Granite<\/a>\/<a href=\"https:\/\/maotrung.com\/blogs\/kien-thuc-chung\/gach-porcelain-la-gi-47127\" target=\"_blank\" rel=\"noopener\">g\u1ea1ch Porcelain<\/a> k\u00edch th\u01b0\u1edbc 80&#215;80 lu\u00f4n t\u1ed3n t\u1ea1i \u0111\u1ed9 mo (cong v\u00eanh b\u1ec1 m\u1eb7t) trong \u0111\u1ecbnh m\u1ee9c cho ph\u00e9p c\u1ee7a nh\u00e0 m\u00e1y. N\u00eam ch\u1ed1t v\u00e0 ke c\u00e2n b\u1eb1ng (d\u00e0y 1.5-2mm) s\u1ebd si\u1ebft ch\u1eb7t c\u00e1c vi\u00ean g\u1ea1ch, tri\u1ec7t ti\u00eau \u0111\u1ed9 ch\u00eanh l\u1ec7ch, \u0111\u1ea3m b\u1ea3o m\u1eb7t s\u00e0n ph\u1eb3ng \u0111\u00fang k\u1ef9 thu\u1eadt.<\/p>\n<figure id=\"attachment_190996\" aria-describedby=\"caption-attachment-190996\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190996\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-6.jpg\" alt=\"Vi\u1ec7c s\u1eed d\u1ee5ng ke c\u00e2n b\u1eb1ng l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi thi c\u00f4ng g\u1ea1ch kh\u1ed5 l\u1edbn\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-6.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-6-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-6-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-6-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190996\" class=\"wp-caption-text\">Vi\u1ec7c s\u1eed d\u1ee5ng ke c\u00e2n b\u1eb1ng l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi thi c\u00f4ng g\u1ea1ch kh\u1ed5 l\u1edbn<\/figcaption><\/figure>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"63_Gach_80%C3%9780_lat_nen_1_thung_bao_nhieu_vien_va_dien_tich_bao_nhieu_m2\"><\/span><strong>6.3. G\u1ea1ch 80&#215;80 l\u00e1t n\u1ec1n 1 th\u00f9ng bao nhi\u00eau vi\u00ean v\u00e0 di\u1ec7n t\u00edch bao nhi\u00eau m2?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Theo quy chu\u1ea9n \u0111\u00f3ng g\u00f3i ph\u1ed5 bi\u1ebfn hi\u1ec7n nay, m\u1ed9t th\u00f9ng g\u1ea1ch 80&#215;80 th\u01b0\u1eddng bao g\u1ed3m 3 vi\u00ean, t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1ed5ng di\u1ec7n t\u00edch l\u00e0 1,92 m2. \u0110\u00e2y l\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n gi\u00fap k\u1ef9 s\u01b0 d\u1ef1 to\u00e1n b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 ch\u00ednh x\u00e1c cho c\u00f4ng tr\u00ecnh.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"64_Gach_80%C3%9780_co_phu_hop_cho_phong_khach_nho_duoi_20m2_khong\"><\/span><strong>6.4. G\u1ea1ch 80&#215;80 c\u00f3 ph\u00f9 h\u1ee3p cho ph\u00f2ng kh\u00e1ch nh\u1ecf d\u01b0\u1edbi 20m2 kh\u00f4ng?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">N\u00ean c\u00e2n nh\u1eafc. G\u1ea1ch kh\u1ed5 l\u1edbn 80&#215;80 th\u01b0\u1eddng t\u1ed1i \u01b0u th\u1ea9m m\u1ef9 cho c\u00e1c kh\u00f4ng gian c\u00f3 chi\u1ec1u r\u1ed9ng t\u1eeb 4m tr\u1edf l\u00ean ho\u1eb7c di\u1ec7n t\u00edch tr\u00ean 20m2. Vi\u1ec7c l\u00e1t g\u1ea1ch qu\u00e1 kh\u1ed5 trong ph\u00f2ng nh\u1ecf s\u1ebd l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 c\u1eaft g\u1ea1ch, g\u00e2y l\u00e3ng ph\u00ed v\u1eadt li\u1ec7u v\u00e0 l\u00e0m m\u1ea5t \u0111i v\u1ebb \u0111\u1eb9p c\u1ee7a v\u00e2n g\u1ea1ch.<\/p>\n<figure id=\"attachment_190997\" aria-describedby=\"caption-attachment-190997\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-190997 size-full\" src=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-7.jpg\" alt=\"G\u1ea1ch kh\u1ed5 l\u1edbn 80x80 th\u01b0\u1eddng t\u1ed1i \u01b0u th\u1ea9m m\u1ef9 cho c\u00e1c kh\u00f4ng gian c\u00f3 chi\u1ec1u r\u1ed9ng t\u1eeb 4m tr\u1edf l\u00ean ho\u1eb7c di\u1ec7n t\u00edch tr\u00ean 20m2\" width=\"800\" height=\"450\" srcset=\"https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-7.jpg 800w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-7-300x169.jpg 300w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-7-768x432.jpg 768w, https:\/\/source-maotrung.s3.vn-hcm-1.vietnix.cloud\/wp-content\/uploads\/2026\/05\/cach-tinh-m2-gach-80x80-7-600x338.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-190997\" class=\"wp-caption-text\">G\u1ea1ch kh\u1ed5 l\u1edbn 80&#215;80 t\u1ed1i \u01b0u cho c\u00e1c kh\u00f4ng gian c\u00f3 di\u1ec7n t\u00edch tr\u00ean 20m2<\/figcaption><\/figure>\n<p><strong>Xem th\u00eam<\/strong>:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/gach-lat-nen-80x80-dep-138675\" target=\"_blank\" rel=\"noopener\">80+ m\u1eabu g\u1ea1ch l\u00e1t n\u1ec1n 80\u00d780 \u0111\u1eb9p, gi\u00e1 t\u1ed1t, xu h\u01b0\u1edbng 2026<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/maotrung.com\/blogs\/tu-van-chon-mua\/kich-thuoc-gach-op-tuong-52367\" target=\"_blank\" rel=\"noopener\">K\u00edch th\u01b0\u1edbc g\u1ea1ch \u1ed1p t\u01b0\u1eddng: Ch\u1ecdn chu\u1ea9n cho m\u1ecdi kh\u00f4ng gian s\u1ed1ng \u0111\u1eb9p<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/maotrung.com\/blogs\/kien-thuc-chung\/mot-thung-gach-op-lat-co-bao-nhieu-vien-96988\" target=\"_blank\" rel=\"noopener\">1 th\u00f9ng g\u1ea1ch \u1ed1p l\u00e1t c\u00f3 bao nhi\u00eau vi\u00ean? C\u00e1ch t\u00ednh 2026<\/a><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><em>N\u1eafm v\u1eefng c\u00e1ch t\u00ednh m2 g\u1ea1ch 80&#215;80 v\u00e0 nguy\u00ean t\u1eafc d\u1ef1 ph\u00f2ng hao h\u1ee5t ti\u00eau chu\u1ea9n gi\u00fap ch\u1ee7 \u0111\u1ea7u t\u01b0 v\u00e0 nh\u00e0 th\u1ea7u ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c ng\u00e2n s\u00e1ch BOQ. Tuy nhi\u00ean, v\u1edbi d\u1ef1 \u00e1n c\u00f3 m\u1eb7t b\u1eb1ng ph\u1ee9c t\u1ea1p, vi\u1ec7c b\u00f3c t\u00e1ch th\u1ee7 c\u00f4ng d\u1ec5 sinh sai s\u1ed1. Li\u00ean h\u1ec7 ngay \u0111\u1ed9i ng\u0169 k\u1ef9 s\u01b0 c\u1ee7a Mao Trung Home qua website maotrung.com \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng d\u1ef1 to\u00e1n m\u1eb7t b\u1eb1ng chuy\u00ean s\u00e2u v\u00e0 nh\u1eadn b\u00e1o gi\u00e1 c\u00e1c d\u00f2ng g\u1ea1ch granite\/porcelain chu\u1ea9n qu\u1ed1c t\u1ebf m\u1edbi nh\u1ea5t 2026.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong c\u00f4ng t\u00e1c b\u00f3c t\u00e1ch kh\u1ed1i l\u01b0\u1ee3ng d\u1ef1 to\u00e1n (BOQ) v\u1eadt li\u1ec7u ho\u00e0n thi\u1ec7n n\u0103m 2026, sai s\u00f3t khi t\u00ednh to\u00e1n s\u1ed1 l\u01b0\u1ee3ng g\u1ea1ch l\u00e1t n\u1ec1n kh\u00f4ng ch\u1ec9 th\u00e2m h\u1ee5t ng\u00e2n s\u00e1ch m\u00e0 c\u00f2n ti\u1ec1m \u1ea9n r\u1ee7i ro k\u1ef9 thu\u1eadt l\u1edbn. N\u1ebfu t\u00ednh thi\u1ebfu g\u1ea1ch 80&#215;80, vi\u1ec7c nh\u1eadp b\u1ed5 sung r\u1ea5t d\u1ec5 g\u1eb7p t\u00ecnh tr\u1ea1ng&#8230;<\/p>\n","protected":false},"author":5,"featured_media":190990,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3922,3931],"tags":[4675],"class_list":["post-190981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tu-van-chon-mua","category-gach","tag-cach-tinh-m2-gach-80x80"],"acf":[],"_links":{"self":[{"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/posts\/190981","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/comments?post=190981"}],"version-history":[{"count":7,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/posts\/190981\/revisions"}],"predecessor-version":[{"id":190999,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/posts\/190981\/revisions\/190999"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/media\/190990"}],"wp:attachment":[{"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/media?parent=190981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/categories?post=190981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maotrung.com\/blogs\/wp-json\/wp\/v2\/tags?post=190981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}