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Rate my drafting skills

Discussion in 'Spam' started by Amin, May 6, 2019.

  1. Amin
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    Amin Senior Member
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    it's ramadan , no one came to work except me ..
    so i wanted to share with u guys what i do at work .
    what do u think about the plans i've designed , any suggestions?
    Software used : Archicad ( cuz the architest i work for uses only this software )

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    Last edited: May 6, 2019
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  2. Knifer
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    Knifer Veteran Member

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    Well firstly wtf am I looking at lmao
     
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  3. Amin
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    Amin Senior Member
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    civil engineering plans of a residential house x)
     
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  4. Pure
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    Pure Senior Member
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    Add more reinforcement steel ;)
     
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  5. Amin
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    Amin Senior Member
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    its enough i guess xD
    the columns for exmple, after calculating , need like 7cm2 of reinforcement so 4 bars of T12 will do the job, but the algerian code suggests using 8 bars, used 8 bars of T12
    same for tge beams and stairs, reinforcement isn't a big deal, compared to the siesmic behaviour of the structure and the fondations.
     
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  6. Hans Entertainment
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    Hans Entertainment Senior Member

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    Are you actually allowed to publish them? :thinking:
     
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  7. Amin
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    Amin Senior Member
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    i'm not allowed to share work with other algerians. x)
     
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  8. Mega
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    **LEAKED**

    Pretty cool, could you explain what some of it means to a simpleton like me?
     
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  9. Amin
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    Amin Senior Member
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    thanks , sure
    so for example this is a floor plan , like a simplified upper view of the slab and other details like stairs case, shear walls, columns etc
    here's some infos about different types of slabs: link
    as you can see on this exmple :
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    4: is a shear wall : a reinforced concrete wall that could be used to retain soil for underground floors ( parkings for exmple ) and as a shear ressisting element, vertical forces in buildings work as shearing forces , they make the structure move and shear the connection points so we added this wall to rigidify the structure, reduce displacement.
    for example, when u have a table that moves, u add an "L" thingy to reduce the movements, that's exactly the same thing in buildings
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    2: balcony ( generally from 0.4-2m with a 12cm thickness)
    3 counterweight slab to make sure the balcony stays stable. ( the length is generally 2/3 of the balcony's length and with a 20cm thickness cuz the floor slab is 20)
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    1 : represents a 16+4 deck slab ( the hight of the hollow block is 16cm + 4cm of concrete thickness if , it looks something like this :
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    i'll skip all the boring elastic and material theories for dimensioning the elements*
    so to choose the type of the deck slab ( 16+4 16+5 20+4 etc..) I search for the longest distance between two columns ( from the architectural plan ) and divide that length by 22.5
    exmple :
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    let's say the longest distance is 4.5 so we calculate 4.5/22.5 ,( it should be 4.5/25 and 4.5/20 but we use 22.5 directly) the result is 0.2 it means that we can use 16+4
    for the beams: length between 2 axes /12.5
    exmple : 4.5/12.5 = 0.36 so we major it to 40 ( cuz we can use only 25-30-35-40-45...etc )
    so it's a 30X40 beam
    there are 2 kinds of beams on a two-way slab, primary beam that resists most of the loads ( direction of slab ), in French " Poutre principal " that's why i name them P1,P2P3..etc
    the secondary beam serves as chaining that's why they're names CH1 CH2 ..etc
    for the columns, i generally use only 30x30 ( minimum dimension of the zone of most projects i've designed, the minimum of a higher risk zone might be different ) and start the seismic analysis.on a software called etabs
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    if the axial force of a column is too big ( failure of the column, i just change it to a bigger one 30x35 or 30x40 for example)
    then I verify the seismic behavior and need to verify :
    a-the shear forces at the base.
    b- the dynamic period of the structure should not be bigger than 130%
    of the static period
    c- the participation mass factors need to be more than 70% ( it means at least 70% of the elements need to move at the same time and direction
    example: a beam supported by 2 columns if an earthquake would hit, all the structure should move at the same time if 1 column doesn't participate the structure will fail.
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    what should i talk about next? calculating reinforcements is boring and no one cares about the economy of it since we have to follow the code so i use the software x)
    here are more detailed plans I've made if you are interested:
     
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  10. Amin
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    Amin Senior Member
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    Mannaged to design and study my very first Tower
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