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  1. mar2805

    Horizontal pressure on rataing wall from backfilled material

    There wont be any compaction behind this wall! Only deposited material
  2. mar2805

    RC slab deflection control - wich lenght to take into account

    Hello! Please see pictrue attached. My code (EUROCODE) defines that for contoling deflecion of RC slab one must see that the deflections are under the value of L (shortest slab span) divided by 250. Wich value for L would you take for this scenario? The walls are made from confided masonry and...
  3. mar2805

    Horizontal pressure on rataing wall from backfilled material

    Ill guess ill just lower the safty factor from 2 to 1,50 for overturning. Other than that I dont see any other solution
  4. mar2805

    Horizontal pressure on rataing wall from backfilled material

    I dont think this picture describes my scenario. What you have on the picture is an full soil profile behind the wall. I dont have this. Please see my picture
  5. mar2805

    Horizontal pressure on rataing wall from backfilled material

    BridgeSMith...any chance for that picture? :-) @PEinc You mean the shifting of the force to the half of the height of the backfill and not on 1/3 from the bottom?
  6. mar2805

    Horizontal pressure on rataing wall from backfilled material

    Bridgesmith thanky you very much! Any chance you could post an image that your text is relating to?
  7. mar2805

    Horizontal pressure on rataing wall from backfilled material

    Hi! Please see attached image. How to calculate the horizontal pressure that the backfilled material will have on the retaining wall? The material will be deposited and will have this trinagular shape behined the wall. Usualy we are presented with problem that say that the material is compacted...
  8. mar2805

    Water pressure on RC container walls

    Please see image attached. Its an RC container. No matter what the width of the water block inside the container is, as long as the height of the water bloack is the same in all of 3 containers, the pressure on the bottom of the wall on all of the 3 containers will be the same. The walls will...
  9. mar2805

    Confined Masonry question

    Heres an more detailed look. All masonry bearing wall will be connected with confining RC elements! The roof is flat RC slab!https://files.engineering.com/getfile.aspx?folder=845680b7-431d-418e-8aa1-513c731b4980&file=Capture.JPG
  10. mar2805

    Confined Masonry question

    Hi folks! Please see attached images. The 1st floor slab is canterlivering from the groundfloor walls. Would you say that the 1st floor RC confining element (marked with "?") is necesary, since there is another one at the end of the wall? Thank...
  11. mar2805

    Canteliver Retaining Walls reinforcement - explained

    "The way we do it, all the horizontal bars would be discontinuous at a contraction joint" Do you provide also an small groove on one side of the wall? (smaller section heigth) "The wall is designed on a per-foot basis, so the stem wall sections are structural adequate independently." I...
  12. mar2805

    Canteliver Retaining Walls reinforcement - explained

    Agree, crack cannot be prevented, but with reinforcement they (crack width)can be controled with horizontal reinforcement. But again, this MUST be related to joint spacings. 100 feet long retainng wall will have more vertical cracks then an 30feet long retaining wall, if both are without any...
  13. mar2805

    Canteliver Retaining Walls reinforcement - explained

    I dont understand how the control joint and horizonstal reinforcement (for T&S) in retainng wall are NOT related?!?! This doesnt make any sense! Logicaly I would say: if I provide more horizotal reinforcement in the retaining wall, I could put two control joints more far apart, and vice versa.
  14. mar2805

    Canteliver Retaining Walls reinforcement - explained

    "Contraction joints shall be provided at intervals not exceeding 30.0 ft" As previously said, construction joints are to allow shrinkage cracks at the joint location. I understand. But this 10 feet distance is a very short distance. I must say Im a bit suprissed. One question, if you provide...
  15. mar2805

    Canteliver Retaining Walls reinforcement - explained

    @hokie66 "In your case, I would use two, at 10'" I dont understand you....are you talking aboth control joints or....?
  16. mar2805

    Canteliver Retaining Walls reinforcement - explained

    I found an info that an 100ft long wall will contract up to 3/4inch. Is this correct? Just one more thing and to be 100% certain. Expansion joint are not same as control joint. Control joint are to control the effect due to shrikage. Correct?
  17. mar2805

    Canteliver Retaining Walls reinforcement - explained

    I looked into Eurcode 2 to maybe find some more info on expansion joints for retaininig walls but there is no subject at all on this topic. Do you mabe have any other tehnical paper that covers this? Doesnt need to be EUROCODE based. @bridgesmith "T&S reinforcement requirements are not affected...
  18. mar2805

    Canteliver Retaining Walls reinforcement - explained

    What aboth expansions joints? Does the distance between them influence the amount of T&S reinforcement?

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