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  1. mathcadboy

    Connection design forces for seismic condition

    Gents, Can anyone tell me how to get the required moment for connection design in seismic applications for an ordinary steel moment frame using ASCE 7-05 and AISC 360-05? I am using R = 3 so no need to go to AISC 341. (By the way, why would anyone use R = 3.5 when you will be forced to design...
  2. mathcadboy

    Bolted extended end plate connection. Thin end plate on Column.

    Are there any references in checking column flange bending when my end plate is behaving like a "thin" plate? If my end plate is behaving like a "thin" plate, the forces on the outer bolts are not equal to the forces on the inner bolts (unlike in the "thick" behavior, all bolt forces are equal)...
  3. mathcadboy

    Wind Load. Open Buildings. Wall.

    How do I compute for the wind load for the remaining walls for an open building? I am doing a Gable type structure with a small covering at the top part of the wall (connected to the roof eave). ASCE 7-05 states that it is an open buiding if area of opening is 80% the gross area of wall. But I...
  4. mathcadboy

    Non-compact Channel

    Hey guys, just a quick question. In AISC 13th ed. Chapter F, I cant find capacities for Channel sections with non compact flanges or web. Need help. Thanks.
  5. mathcadboy

    ACI seismic detailing requirement question

    21.3.2.2 — Positive moment strength at joint face shall be not less than one-half of the negative moment strength provided at that face of the joint. Neither the negative nor the positive moment strength at any section along member length shall be less than one-fourth the maximum moment strength...
  6. mathcadboy

    Tensile Strength of concrete

    can anybody tell me a reference where I can get the tensile strength of concrete after 3 days of curing. thanks.
  7. mathcadboy

    additional rebar for lateral loads

    is it possible to design a column in a concrete moment frame by just designing it with Dead load and live load then just add rebars at column-beam joints for lateral loads, i.e. seismic loads? why or why not?
  8. mathcadboy

    Structure with one side retaining soil pressure loads

    I am currently designing a two-story concrete structure that is going to be located in a sloping terrain. The owner doesn't want to backfill or cut the land but he wants to make it sorta look like a "basement" (since only one side of the "basement" will have have soil in it). Anyway, here are...
  9. mathcadboy

    Mathcad version of iserror in Excel

    I wonder how do I do like an iserror function of excel in mathcad. for example, I am going to match a number to an array that doesnt have a match to that number. Mathcad only gives out an error message saying that "no matching values found". how do I make mathcad do something else if no values...
  10. mathcadboy

    vlookup and hlookup

    Hello, is there a way in mathcad to use vlookup that the value that it looks up is not on the first column? because in excel I do something like this : =INDEX(A2:A6,MATCH("Belfast",C2:C6,0)) Is there a way to do this in mathcad? thanks in advance to anyone that can help

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