Technical

Technical issues or questions that frequently arise with using MecaStack

How do I model a Dual Wall Stack in MecaStack?
There is not currently an option for a dual wall stack in MecaStack; however, you can model a dual wall stack as follows: 1)  Model the outer stack diamete...
Thu, 8 Aug, 2019 at 7:41 AM
How do you use the "Enter Pipe" option in MecaStack?
The "Enter Pipe" option is only a convenience option to use when the stack is fabricated from pipe material, rather than rolled from plate.  For Ex...
Mon, 29 Oct, 2018 at 5:58 AM
How does MecaStack treat Piping?
When you model as piping, then no stiffness is considered for the piping, the software only adds wind area and weight.  The wind area and weight are assume...
Thu, 20 Dec, 2018 at 12:58 PM
Vortex Shedding on Guy Wire Supported Stacks
There are not any codes which are very complete when it comes to analysis of vortex shedding on guyed stacks.  There have been very few instances where guye...
Wed, 6 Feb, 2019 at 9:09 AM
Basis for Baseplate Design
The basis for the Baseplate Design in MecaStack is from "Process Equipment Design" by Brownell and Young.  This book is no longer being published,...
Tue, 14 Dec, 2021 at 2:13 PM
MecaStack Effective Length Factors
MecaStack considers effective length factors (K) for sections of a Self Supported or Guy WIre supported stack, depending upon the boundary conditions at eac...
Wed, 20 Feb, 2019 at 11:44 AM
Non-Linear Analysis & P-Delta Effect
In the non-linear analysis the user specifies "load steps".  The total load is divided by the number of load steps and then applied.  For example,...
Wed, 8 Jan, 2020 at 8:54 AM
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
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