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Recent content by LaylaZ

  1. LaylaZ

    ASCE 7-05, SEISMIC REQUIREMENTS FOR NON-BLDG STRUCTURES - LCs.

    Hello, For ASCE 7-05, chapter 15 (SEISMIC DESIGN REQUIREMENTS FOR NON BLDG STRUCTURES), do seismic load combinations specified in Section 12.4 (for BLDG Structures) still apply, since there are no LCs specified in chapter 15? Thank you much, Layla.
  2. LaylaZ

    Stiffener size & spacing on a steel stack

    A VERY GOOD REFERENCE IS: PRESSURE VESSEL DESIGN MANUAL BY MOSS. It has everything about the design of stacks in particular. Stiffeners, Rings, gusset design... etc good luck. -l.
  3. LaylaZ

    Natural Frequency for Vessels - MOSS

    Dear Engineers, For those of you who are familiar with Dennis Moss' Pressure Vessel Design Manual, for calculation procedure 3-9, exactly in page 161 where he shows the method to calcualte the Natural Period of Vibration T = (H/100)^2*SQRT(sigma (w*Delta Alpha + W*Beta/H)/sigma...
  4. LaylaZ

    damping of steel stacks

    Hi guys, I am new to stacks. My boss gave me a serie of 3 stacks, that we want to brace to reduce vibrations. Could you please shed some light on that subject. Provide a method if possible or recommend any references. Your answer is appreciated. Layla Zelnick.
  5. LaylaZ

    Creating a Staad model for blast Loading

    Hello everyone, In the aftermath of the terrorist attacks on our nation, the NRC issued orders to the US nuclear power plants to enforce security in their premises, to mitigate any possible terrorist attack. In this effect, we are to design security (hardened) booths (some elevated on towers...
  6. LaylaZ

    Design of blast resistant steel enclosures

    Guys, thank you so much for the valuable info each of you has provided. JWB46, the pulse is triangular and its duration is 7ms. As to the shape of the booth it's a square, 8'x10'x 8' high. The bomb is assumed to be placed at a certain distance X (safetyguard info! sorry :)), to produce about...
  7. LaylaZ

    Design of blast resistant steel enclosures

    Hello everyone, In the aftermath of the terrorist attacks on our nation, the NRC issued orders to the US nuclear power plants to enforce security in their premises, to mitigate any possible terrorist attack. In this effect, we are to design security (hardened) booths (some elevated on towers...
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