Technical

Technical issues or questions that frequently arise with using MecaStack

MecaStack Structural Flange Basis
Structural flanges are flanges which are used to splice sections of stack together, rather than using a weld. They are bolted flange assemblies similar to t...
Mon, 8 Apr, 2019 at 12:52 PM
How does MecaStack size Turnbuckles
The "Auto Size Turnbuckle" works as follows:​ Cable Load = Breaking Strength / Safety Factor for Guy wires The software finds a turnbuckle that h...
Tue, 23 Apr, 2019 at 8:54 PM
How does MecaStack do Autosize of turnbuckles
The "Auto Size Turnbuckle" works as follows: Cable Load = Breaking Strength / Safety Factor for Guy wires​ The software finds a turnbuckle that h...
Tue, 23 Apr, 2019 at 9:02 PM
Can strakes be considered as stiffening rings?
Often the question arises as to whether helical strakes can be considered as stiffening rings in the Stack Analysis.   Generally helical strakes are very t...
Fri, 3 May, 2019 at 9:16 PM
Can MecaStack be used to Model a stack on a elevated structure such as a heater/furnace
MecaStack is capable of analyzing a elevated structure, such as a building or heater stack.  The challenge is determining the overall frequency of the stack...
Thu, 9 May, 2019 at 11:29 AM
How to model a Stack supported on an Elevated Structure
MecaStack is capable of analyzing a elevated structure, such as a building or heater stack.  The challenge is determining the overall frequency of the stack...
Wed, 29 May, 2019 at 2:33 PM
Why do I have negative vertical reactions on my deadman?
Here is an example of a deadman reaction in MecaStack that is indicated negative vertical reactions.   The negative vertical loads don't ac...
Wed, 3 Jul, 2019 at 11:40 AM
Guy Wire Properties
The guy wire properties can vary by supplier and type of rope construction.  Attached are the values that we use within MecaStack, but you can also select t...
Wed, 10 Jul, 2019 at 1:56 PM
Stack Deflection Limits
The ASME STS-1 standard has no limit on deflection.   The approach Meca takes on deflection limits requires some background.  The developer of MecaStack...
Mon, 5 Aug, 2019 at 9:44 AM
How do I know what damping to use?
Here is an article to help explain how to determine what structural damping you have on a stack.   https://www.mecaenterprises.com/how-to-determine-damp...
Thu, 8 Aug, 2019 at 7:28 AM