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Found 3 results

  1. hel0o, i need an expert openion as i a, designing a raft foundation for 8 story building , 1 ) i have provided a deep beam in the raft foundation , below the columns(column strip) , which is 48"x36 " (24" raft+ reamaining 24" beam ) and in the middle strip the raft is 24 " see attached (Fig111) , is this practice alright to make the design economical ? column size 24x24 secondly what if i shift the raft to the top of foundation beam and , or in other words move the beams 24" below the raft which is more suitable for clayey soil? 2) i want to assign soil springs as i want to do the analysis in ETABS so what should be the value of Area springs for .6tone/sqft ?? 3) when i preform the analysis in SAFE (fig 222)t gives no results for column punching ? why is this so ? 4)why dosen't SAFE provide punching data for shear walls ? 4 ) My plot area is limited so the columns are on the edge of the raft ,is this ok ? thanks in advance
  2. Salam. I am reviewing a flat slab which i received as .fdb, punching shear for flat slab is displayed N/C. what could be the possible reason for? file is attached Slab @ +676 (Z=16').rar
  3. I have an idea to discuss here related to Punching shear; that is In categorization of columns there are : 1. Interior ,where the distance from each face of a column to the slab edge is at least four times the slab thickness 2. Edge column, where one face of a column in direction of design strip is closer to the slab edge in the same direction by four times the slab thickness . 3. Corner column, where two adjacent faces of a column are closer to their associated slab edges by less than four times the slab thickness. But the issue that is SAFE doesn't consider these definitions so it may give safe results where it may be unsafe . Please discuss All Regards
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