![]() Thank you in advance.ĭesign Load Method: ASCE7-16 Strength Design Load & Allowable Stress Designĭefined from 26.7.3, page 266 & Figures C26.7-5 through C26.7-7, pages 745-747 You may get an email about updates to the wind load program or changes to this website. If you enter your email address, you can be rest assured it is safe and will not be sold. The program will let you know when the conversion has happened after the design pressures are calculated.īe sure to enter all required fields. This will cover the mean roof height and least building width. Finally, I added programing to accommodate the use of feet and inches to be converted to decimal feet as the program requires. You will notice smaller design pressures under those conditions. The Kz value on exposure B was revised on heights under 30 feet. See the interactive map showing your elevation above sea level and the calculated Ke variable. Ke represents a Ground elevation factor and the value is determined from a calculation above sea level. Some of the changes are a new variable Ke was added to the velocity pressure formula. In these calculations the ASD velocity pressure is reduced by 60%. ![]() The program calculates the LRFD (Load Resistance Factor Design) and ASD (Allowable Stress Design) design pressures. Refer to your local jurisdictions to determine which map and wind speed to use. The Wind speed maps are separated into risk category 1 through 4. See the calculator below to verify the exception can be used. I added a check box to force the program to utilize part 1 when using the exception rule in part 3 which allows the use of part 1 for heights greater then 60ft and less than 90 feet. The program will automatically determine Part 1 or Part 3. This program utilizes Part 1: Low-Rise Buildings h60 ft to calculate the design pressures. The Asce 7-16 Building Code has four parts for determining the components and cladding. Refer to the bottom of this page for various building code web site links. It is highly recommended you review the building code to understand where the information comes from. I use these programs to verify the design pressures provided by the architects or to create them for estimating or engineering purposes. The program displays the Wall Components and Cladding design pressures for the selected conditions. I’ve also been writing plugins for Adobe Illustrator since Adobe first added support for that in 1993, and one of my recent projects was a specialized tool for projecting flat orthographic art into its correct position in a 3D axonometric view by first marking corresponding points in the top, front, and side views.Here is a web enabled Asce7-16 wind load program. CADtools can project flat art to axonometric planes, but the challenge with this drawing was in correctly positioning the pieces. Using the CADtools plugin from Hot Door Software, I sized the scanned images to my drawing scale of 3/16-inch equals 1 foot and began tracing. With some oversight by John Bush and Robert Lettenberger, I was in a good position to draw the Big Boy. Kratville’s 1972 book “Big Boy” which contained a lot of photos of the locomotives under construction.Ī 1941 Locomotive Cyclopedia provided details on components such as superheaters and stokers. Morgan Library had a good variety of photos of Big Boys, as well as William W. Bearman in Kalmbach Books’ Steam Locomotives Cyclopedia - Volume I compiled by Linn Westcott. The primary references for my drawing were a scanned image of an actual blueprint of the Big Boy as well as a drawing by E.W. The project began in August 2018, to be done in an on-and-off fashion between work on issues of Trains, Model Railroader, and other Kalmbach publications. And once the project gets started, there’s really no opting out. When Trains editor Jim Wrinn was planning the June 2019 special issue on Union Pacific’s Big Boy, he brought up the possibility of a 3D cutaway of the 4014.Īny steam locomotive would be a tall order, but the Big Boy is about as intense as a steam locomotive can get.
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