Piggy-Back Stacks

Piggy-Back Stacks

Piggy-Back Stacks We often get the question of how to model a Tandem or Piggy back stack in MecaStack. One can be handled by the software and the other cannot. Piggy-Back Stacks: A Piggy-Back stack is one where one or more stack is supported by another stack. Usually...
How to Find Wind Pressure on Solar Panels

How to Find Wind Pressure on Solar Panels

How to Find Wind Pressure on Solar Panels In this article we will investigate the procedure for calculating the design wind pressure on rooftop solar panels per ASCE 7-16 design code. I feel like the best way to describe this procedure is by working through an...
Ultimate Guide to Material Properties

Ultimate Guide to Material Properties

Ultimate Guide to Material Properties MecaStack has a built in database for stack material properties, which are intended to help the designer. There are some common questions and problems that we see when it comes to the use of the stack material properties. ...
Base Reactions in MecaWind

Base Reactions in MecaWind

Base Reactions in MecaWind There can be confusion from users on how to read and interpret the MecaWind Base Reactions that are provided by the MecaWind software program.   There is a lot of data presented, and it can become overwhelming.  This article is intended to...
Life is a Breach

Life is a Breach

Life is a Breach A breach is an opening in the cylindrical shell of the stack that compromises its structural integrity. This is usually either a rectangular ducting connection or a cylindrical pipe nozzle penetrating the stack shell. How does MecaStack handle Breach...
ASCE 7 Flexible Gust Factor

ASCE 7 Flexible Gust Factor

Private: ASCE 7 Flexible Gust Factor When I was a new Engineer my boss had his stack design questioned by a client.  My boss responded “Sir, I will serve you tea on the downwind side of that stack on the windiest day of the year.”   That line (and...

One Click Components & Cladding

One Click Components & Cladding Would you like to be able to calculate all of your Components & Cladding (C&C) values with one Click?  In this article that’s what we are going to show you.   Component and Cladding Summary: The normal way of...
Add Some Guy Wires

Add Some Guy Wires

Add Some Guy Wires When and why should I use guy wires on a stack? When a stack has a vortex shedding problem there can be many factors that determine which solutions are the best.  Guy wires aren’t always the most conventional solution, but its always an option...
I Feel the Need to Change Wind Speed

I Feel the Need to Change Wind Speed

All It was Tom Cruise in “Top Gun” who once said, “I feel the need, the need for speed”.  I sometimes wonder if Tom Cruise is on the ASCE 7 committee, because it feels like they have the need to change the wind speed basis with every new...
Slow Down

Slow Down

All I’ll bet “Slow Down” isn’t an expression you hear much in your business.  I dream of a day when a customer tells me, “Slow down, we really don’t care when you finish your design.”  I can’t get you more time on your...
Tornado Alley

Tornado Alley

I live in Oklahoma and during the Spring and Fall seasons we tend to have a lot of tornadoes, and that’s why this part of the country is part of the region dubbed “Tornado Alley.”  Since our company sells the MecaWind software, we sometimes get asked...
I Feel the Need, the Need for Speed

I Feel the Need, the Need for Speed

In my humble opinion, the Movie Top Gun is one of the best movies of all time.   One of the best parts is when Tom Cruise says “I feel the need, the need for speed”.  It’s not just a great line, it also applies to many stack designs.  More speed...
Shining light on Windows and Doors

Shining light on Windows and Doors

Calculating pressures on windows and doors is one of the most common operations performed in MecaWind, and so we thought we would make a brief video to explain the way to calculate Components and Cladding (C&C). We also show some tips for new features in C&C....
Welcome to our Damping Pad

Welcome to our Damping Pad

When a vortex shedding problem exists on a stack, sometimes the most economical option is a damping pad. What is a damping pad? A damping pad is a preformed laminated fabric pad of a manufactured material composed of layers of tightly twisted, closely woven...
Florida Building Code 2017 Wind Loads

Florida Building Code 2017 Wind Loads

We have added the Florida Building Code 2017 Wind Loads to our software, MecaWind (Pro feature), and this gave us an opportunity to get familar with the Florida Building Code 2017.  We wanted to take a moment to explain some of the things we learned about Florida...
How to Determine Damping

How to Determine Damping

We can all grasp the physical attributes of a stack such as the height, weight, diameters, etc.; however, what is the stack’s structural damping?  Does MecaStack estimate the damping of the stack?  Is there any harm in just arbitrarily changing the damping...
Getting High on Wind

Getting High on Wind

I am an amateur cyclist, and I typically ride my bike on trails in my home of Broken Arrow, Oklahoma at an elevation of 700 ft [213 m].  One year I took my bike on a vacation to Breckenridge, Colorado at an elevation of 9,000 ft [2743 m].  The first thing I noticed...
MecaWind is like Driving a Car

MecaWind is like Driving a Car

The new MecaWind release provides a new way to select the method used for the Main Wind Force Resisting System (MWFRS) and the Components and Cladding (C&C). The results can be different based upon the MWFRS method and C&C method selected.  The question now is...
Getting Twisted about Helical Strakes

Getting Twisted about Helical Strakes

If you have a vortex shedding problem on a stack, then in some cases helical strakes are your best option; however, there are other cases where helical strakes are not the best option. When not to use Helical Strakes? If there is another stack (or tall structure) that...
It’s not my Default

It’s not my Default

There is a feature in MecaWind that is seldom used, but can be very helpful. It’s a feature under the File Menu called “Save Current File as Default”. What does it do? When this feature is is selected, it takes the current file and sets it up as the...