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  1. cris300

    Joist element details

    Hi again i'm still need a help with this please!!!
  2. cris300

    Joist element details

    Regard friends I need find a book that detail or show a drawing of the element in every kind of joist for example a drawing of the 10K1 or the 28K9 (the top chord and the bottom chord) thanks for your help cris
  3. cris300

    special building vs intermediate building

    the beam are red in AISC 360-10 results because lb/ry>0.17 E/fy not by the ratio red mind failure in this software
  4. cris300

    special building vs intermediate building

    hi everybody I'm designing a building where the beams in the secundary direction fail by lb/ry>0.17 E/fy i cannot undertand why a secondary member required a section higher than the principal. you can see the image i'm using etabs, and intermediate design for a building with 7 story if i...
  5. cris300

    What is the structural solution that can be more economic that tilt up solutions

    I need hear your experience about what system can be more economic than a tilt up system (tiltup walls and steel roof) for a building with 6,000 m2 and hight of 14 m with one only floor. sory my bad english thanks in advance
  6. cris300

    what is the minimun distance into the concrete for a brige pile (the pile a HP section)?

    and what do you think about the reinforcement propose? stirrups and vertical rebars thanks in avance
  7. cris300

    Irregular diaphragm problem

    Hi I have a structure with a irregular distribution i'm using a steel deck like roof i usually use colector beam in my projects, but in this case, i need other option i was checking the SDI manual, but in all the examples a collector is the only solution that they use i want to now your...
  8. cris300

    Structural opinion about solution

    will be normal weight concrete.
  9. cris300

    Structural opinion about solution

    Yes is a steel deck of 4 inch, the concrete over is 2 inch
  10. cris300

    Structural opinion about solution

    hi everybody i have a structure with 46 ft of clean span i'm using steel beam W24X68 @ 6.5 ft with a steel deck with 2 inch of concrete (composite section) the live load is 105 lb/ft2, all is checking (deflection, flexure and shear) but i feel this section w24x68 very small for this span what...
  11. cris300

    Solution for a slurry wall with basement

    here the imagehttp://files.engineering.com/getfile.aspx?folder=b9204eae-630c-4efa-9c5f-d767b18793e0&file=WALL.pdf
  12. cris300

    Solution for a slurry wall with basement

    I have the attached condition a slurry wall with a basement that will like the image in the final step before the construction of the last floor only restriened by the pasive force in the bottom whats must be my equation to know the deep under the third soil and know the moments and shear for...
  13. cris300

    tilt up wall design help

    Hi i need help with the tilt up wall design rules or tables of experts that work every day, in this area my projects are industrial building with one only floor what design method your prefer? aci , slender method ..? i have this questions little confuses - whats are the minimum ratios of...
  14. cris300

    epoxy tensile forces

    i have a epoxy with the following specifications tensile strength = 3135 psi bond strength = 7370 psi how i must calculate the maximun tensile force for a bar with a diameter 1 1/4 that will be embebed to the concrete cris
  15. cris300

    Rooftop topping

    I will use a membrane as you recommend but there is no way to ensure that the cracks do not appear? because the supervisor is very strict with this perhaps with fibers, what do you think?
  16. cris300

    Rooftop topping

    Thanks for your answer i'm worried about the leak and cracks becouse the cars will be on the roof, down there will be a supermarket
  17. cris300

    Rooftop topping

    yes it is a parking area
  18. cris300

    Rooftop topping

    I took load in the design from the beginning Thanks for your concern
  19. cris300

    Rooftop topping

    Sorry Here again the explanation more Detailed I have the rooftop of a parking building with a structural concrete slab (working in one direction) with 5 inches of thickness and span of 10 feets, supported by beams 76x152 inches the total area is 25,000 square feet I want to place over this...
  20. cris300

    Rooftop topping

    Hi I'm designing a toppping concrete (3 inches) on a slab (5 inches) but do not want that the topping crack that tips should I take the time to build the slab is built and the surface are floated I have no snow effects And whats would be cut widths if i have a topping of (3 inches) thanks

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