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  • Users: Rawand
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  1. Rawand

    Performanca analysis

    I have worked on this issue but only taking into consideration the tjheoretical methouds which includes: 1- collecting all available design drawing & as build drawings anlong with contractor reports and material testing what ever available 2- Performing some on-site tests (Schmidt Hammer-...
  2. Rawand

    Seismic Joint between buildings

    1- It is easy to disconnect This bridge from ur building using proper steel joints (movment joint) Red Text 2- These two buildings will not act the same 3- As stated: joining the two will lead to unpredicted stresses. Green Text
  3. Rawand

    Seismic Joint between buildings

    1st: The two building will likly to have two different periods due to dynamic loads (wind, sesmic). 2: You still can model your thing without the joint BUT: You will get a hell of concentrated complix stresses around the bridge supports and in the bridge members and you will not be able to...
  4. Rawand

    Cannot Get 98% Compaction

    I agree with Focht3 and SirAl, and DRC1 Proctor test is not adequate for all types of soil, do u need density or final settlement? I think your material is not compactable, with a heavy compactor u will only smash the material, and will need a new proctor!. I think 98% is not applicable for your...
  5. Rawand

    Cheating on retaining wall calcs

    checking others plans is following one simple rule What is ur engineering sense is telling u? u feel doubt, recalculate and prove that he is on the wrong...
  6. Rawand

    Blinding Concrete - Specified Grade

    Dear BigH,,, Some foundation design techniques take into account the strength of PCC and it's contrebution in speading the load, but this assumption is not helpful unles accompanied by big thickness, as for me i am not using this, as for the stength of PCC, i never specified two, but i always...
  7. Rawand

    WaterCAD analysis

    E-mail the project to me, i'll try to help, something is wrong in the input.
  8. Rawand

    water distribution pipe material

    Try to consider HDPE pipes, for pressure up to 10 -12 bar, for a small network it will be good, and for temporary network it is economical even.
  9. Rawand

    Floor Loading

    I'll try to answer despite of that the whole question is fuzzy, assume that the breadth of a plate is B, length is L assume that the load on one sqm is q assume that n is the number of plates sharing a side (frame element) n=1 for edge frames, n=2 for inner frames the load transmitted to one...
  10. Rawand

    Foundation on loose sand

    I have worked in the UAE for some time where fine snad is all you get from surface to the very bottom of the desert,, SPT test (or Cone test) for such conditions is the most reliable one for loose soil, other wise you cannot assess bearing capacity nor settlement,, In loose soils usually the...
  11. Rawand

    DCP on sand?

    As fara as I know DSP is good what ever the grade of soil is, Check Soil Mechanics Mcgraw Hill since the soil is not cohesive or it is neglectable
  12. Rawand

    Pile foundation remedial works-any good idea ???

    I think that 30% reduction in uplift friction is rather sever, Uplift friction is equal o the sattelment friction but 1- resisting uplift the weight of the pile is considered 2- Reducing total area of contact between the soil and the pile decreases the fixing resistance 3- I think You houldnt go...
  13. Rawand

    I Wall design guidelines

    I'm ready to help Send me a drawing to my addresssido_r@ureach.com so i can answer proper
  14. Rawand

    I Wall design guidelines

    If I understand Correctly the I wall is a retaining wall and it is not like an inverted T and L above the top, the procedure of designing The I wall if any loads above is to determine the moment at the top of the stem, then continuing the analisis not transfaring moments from the base to the top...
  15. Rawand

    sway inhibited

    The latteral deflection is governed by the type of the building (Chimney, Residental, Comercial), so as to keep the occupants comfort (it is about H/1000) I cant recall but i have it somewhere in my references. Wherever there is a shear wall and its L/H ratio is greater than 1/12 according to...
  16. Rawand

    Expansion joints in Irregular shaped buildings

    Dear FVS it is Illogical to connect high buildings in only 1 level Irrigular they or not. Irrigular buildings must be divided completely to make allowance for sway when subjected to wind blows or earthquakes. I suggest that the connection block (if any) be simple supported on cantilevers from...
  17. Rawand

    Exposed Slab Bottom Bars in 50 year old building

    PhDE I know a method of covering the concrete members using Kevlar texture, pasted on the concrete surface using Epoxy based grout. So if the building is important Go for it, remove the bottom cover part by part and reiforce the bottom using this textile. otherwise try to cover the damage using...
  18. Rawand

    pipeline protection slab

    I think That The backfill should consist of gravel 5mm-20mm it requires minimum compaction, besides it helps the drinage of underground water around the pipe, and detrebutes the loads uniformly and easy to dig out the pipe in the future for maintenance porpuses. but since it is sewage pipe, the...

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