{"id":1468,"date":"2017-01-29T18:06:31","date_gmt":"2017-01-29T12:36:31","guid":{"rendered":"http:\/\/onlinecivilforum.com\/site\/?p=1468"},"modified":"2022-12-13T11:34:09","modified_gmt":"2022-12-13T06:04:09","slug":"rcc-slab-roof-design-example","status":"publish","type":"post","link":"https:\/\/onlinecivilforum.com\/site\/rcc-slab-roof-design-example\/","title":{"rendered":"RCC SLAB ROOF DESIGN EXAMPLE"},"content":{"rendered":"

Concrete roof or slab is made waterproof by applying stabilised bitumen sheets.The floor is first cleaned and then some bitumen is sprinkled over the surface and then bitumen stabilised sheets are rolled over the surface and joined with other at edges by applying heat through gas torch.<\/p>\n

R.C.C slab roof 6mx3mx0.12m<\/strong><\/p>\n

R.C.C work 1:2:4: in footing excluding steel and it\u2019s bending.<\/strong><\/p>\n

= 6.3×3.3×0.12 (0.15m in both sides)<\/p>\n

= 2.495 cum<\/p>\n

Steel reinforcing bars including bending-<\/strong><\/p>\n

Main bars:  12mm dia @0.89kg\/m straight bars<\/p>\n

24cm c\/c . No (6.3-0.08)\/24+1( side covers=2x4cm)<\/p>\n

= 27Nos.<\/p>\n

L=3.3-2covers+2hooks  (Take cover 4cm, hook 9xd<\/p>\n

= 3.3-(2x4cm)+(2x9x12mm )<\/p>\n

= 3.44m<\/p>\n

27Nosx3.44×0.89 =82.66kg<\/p>\n

Bent up bars: 26 Nos 12 mm dia @0.89kg\/m<\/p>\n

= 3.44m+0.08( add one depth)<\/p>\n

= 3.52m<\/p>\n

26Nosx3.52×0.89 =81.45kg<\/p>\n

Distribution bars:  6mm dia  @0.22 kg\/m<\/p>\n

Bottom bars central portion 18cm c\/c<\/p>\n

(No.= 2.00\/0.18+1=12 Nos<\/p>\n

Bottom bars 2×3 two sides<\/p>\n

Top bars two sides 2×3<\/p>\n

Total No of bars = 12+2×3+2×3= 24Nos<\/p>\n

L=6.3-2covers+2hooks  (Take cover 4cm, hook 9xd<\/p>\n

= 6.3-(2x4cm)+(2x9x6mm )<\/p>\n

= 6.33m<\/p>\n

24Nosx6.33×0.22=33.42kg<\/p>\n

Total steel = 82.66+81.45+33.42<\/p>\n

=197.53Kg<\/p>\n

ABSTRACT :<\/strong><\/p>\n

    \n
  1. R.C.C work 1:2:4: in beam excluding 2.495cum<\/strong><\/li>\n<\/ol>\n

    steel and it\u2019s bending<\/strong><\/p>\n

      \n
    1. Steel reinforcing bars including bending- 197.53kg <\/strong><\/li>\n<\/ol>\n

       3     Centering & shuttering required:<\/strong><\/p>\n

      Area of centering and shuttering<\/p>\n

      =6mx3m<\/p>\n

      =18sqm<\/p>\n","protected":false},"excerpt":{"rendered":"

      Concrete roof or slab is made waterproof by applying stabilised bitumen sheets.The floor is first cleaned and then some bitumen is sprinkled over the surface and then bitumen stabilised sheets are rolled over the surface and joined with other at edges by applying heat through gas torch. R.C.C slab roof 6mx3mx0.12m R.C.C work 1:2:4: in …<\/p>\n","protected":false},"author":2264,"featured_media":1469,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[58],"tags":[96],"class_list":["post-1468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-structural","tag-rcc-roof-slab"],"yoast_head":"\nRCC SLAB ROOF DESIGN EXAMPLE<\/title>\n<meta name=\"description\" content=\"Concrete roof or slab is made waterproof by applying stabilised bitumen sheets.The floor is first cleaned and then some bitumen is sprinkled\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/onlinecivilforum.com\/site\/rcc-slab-roof-design-example\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" 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