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Found 7 results

  1. I need your help in deciding whether to go for a RCC basement or Pillar foundation for home construction. I am not a civil enginer. I want the home to be constructed on a strong foundation. I have heard from someone that basement makes the home weak in terms of its foundation. For example in earthquake home with a basement can be more vulnerable to cracks or collapse. I have zero knowledge about construction. That is why I need your help. Should I go for a RCC basement OR pillars foundation. My only concern is that the home should be on a strong foundation. I am planning for ground floor and in future if needed then first floor. Please guide me which way to go.
  2. RCC Design Without Modifiers

    Dear fellows! I have observed that some senior engineers have not been using stiffness modifiers in their designs. What is the concept behind i am not clear . As we design RC for strength, section is cracked and to cater for this cracked section, property modifiers are used as per ACI 318-11 10.10.4 (stiffness requirement) ACI 318-11 8.7 (stiffness requirement) UBC97 1630.1.2 (modelling requirement) so why whole section is considered in design. is there any other logic which i couldn't understand. Regards
  3. Salam Girders of a bridge during launching collapsed. it is reported it happened due to heavy winds during launching of the girders,links for further details are attached. http://tribune.com.pk/story/1109218/rs330m-jhelum-bridge-collapses-ahead-inauguration/ http://www.baaghi.tv/330-million-jhelum-bridge-collapsed-due-to-substandard-material-and-negligence-of-highways-department/ Regards
  4. Assalam-o-Alaikum, I have modeled a retaining wall in SAP2000. I have got the moments are shear forces in major and minor directions. The wall is also carrying some concentrated axial loads over it (separated at some distance). My question is, how can I check the axial force present along the length of the wall in SAP2000? Like M11, M22, V12, V23, which component denotes the axial force transferred? Also, please give some reference of calculating RCC wall axial load carrying capacity. Thanks
  5. strap footing design

    using staad foundation advanced, I designed a strap footing for two eccentrically loaded columns(offset of left column=-600mm and offset of right column=600mm) of one bay, 3 storey building with grid spacing of about 14 ft in x direction and 12 ft in y direction. The dead load was about 300kN and live load was about 60 KN and earthquake load was about 40 KN in -y direction with moment about z axis 25 KNm. soil bearing capacity was 150 KN/m^3. I used the load combination 1DL+1LL and 1DL+0.8LL+0.8EL. strap beam was in x direction. I got footing size 1.75mx1.75m. footigg thickness 200mm. no of 12mm bars in x direction=6 and no. of 12mm bars in z direction=23. I got doubly reinforced strap beam with 0.53m depth and 9 inch width. bottom reinforcement=3 no. of 12mm bars top reinforcement=6 no. of 16mm bars. And for shear reinforcement it says:"Since nominal shear strength of concrete is greater than maximum shear force, shear reinforcement is not required". I just want to know are the results I got practical or is it likely that I had made some mistakes. I have doubt whether the following result in right or wrong: the vast difference of reinforcement in x and z direction which are 6 and 23 no. of 12mm bars respectively for 1.75mx1.75m footings. and another doubt is requirement of no shear reinforcement in strap beam. Please help me!
  6. Etabs Reinforcement

    My Etabs 2015 Gives Very Little Reinforcement For The Columns Of My Rcc Building. What Might Be The Reason. My Etabs File Is Attached Herewith. https://www.dropbox.com/s/gy1ndwqau32dq64/house%20for%20rupendra%20bista%208.EDB?dl=0 house for rupendra bista 8.EDB
  7. Column Failure!!!

    salam Dear fellows we have two concrete columns C1 and C2 with heights x and y .C1 is on the land and C2 is submerged in water.it is a test so there is no steel in the columns.we need to find the x and y on which these two columns will fail by crushing at the base. Regards
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