Epic just announced a first look at the Unreal 5 Engine that is scheduled for release in 2021. The current major version 4 is free for use, and has gained popularity for architectural visualization, games, and real-time graphics. Nanite and Lumen are two key technologies allowing billions of polygons to be imported directly into the engine.
Nanite virtualized micropolygon geometry frees artists to create as much geometric detail as the eye can see. Nanite virtualized geometry means that film-quality source art comprising hundreds of millions or billions of polygons can be imported directly into Unreal Engine—anything from ZBrush sculpts to photogrammetry scans to CAD data—and it just works. Nanite geometry is streamed and scaled in real time so there are no more polygon count budgets, polygon memory budgets, or draw count budgets; there is no need to bake details to normal maps or manually author LODs; and there is no loss in quality.
Lumen is a fully dynamic global illumination solution that immediately reacts to scene and light changes. The system renders diffuse interreflection with infinite bounces and indirect specular reflections in huge, detailed environments, at scales ranging from kilometers to millimeters. Artists and designers can create more dynamic scenes using Lumen, for example, changing the sun angle for time of day, turning on a flashlight, or blowing a hole in the ceiling, and indirect lighting will adapt accordingly. Lumen erases the need to wait for lightmap bakes to finish and to author light map UVs—a huge time savings when an artist can move a light inside the Unreal Editor and lighting looks the same as when the game is run on console.
Unreal Engine 5 will be available in preview in early 2021, and in full release late in 2021, supporting next-generation consoles, current-generation consoles, PC, Mac, iOS, and Android. Epic is designing for forward compatibility, so you can get started with next-gen development now in UE4 and move your projects to UE5 when ready.
Wabbitemu creates a Texas Instruments graphing calculator right on your Android device. Wabbitemu supports the TI-73, TI-81, TI-82, TI-83, TI-83 Plus, TI-83 Plus Silver Edition, TI-84 Plus, TI-84 Plus Silver Edition, TI-85, and TI-86. Fast and convenient, Wabbitemu allows you to always have your trusty calculator with you. Because Wabbitemu is an emulator, the calculator it creates will act exactly like the real thing.
Wabbitemu, like all emulators, requires a ROM image. Wabbitemu includes an easy to use setup wizard that will help you create a ROM image for your TI.
If you need to make a ROM, you can download it from your calculator. If you need help try clicking on appropriate link below:
Excel has a repeat function called REPT that will repeat a text character any number of times. It’s format is REPT(TEXT, Value) where Value is the number of times that TEXT is repeated. You can use “i”, “o”, “-“, or any other letters/symbols as your text and do a primative bar graph. You can also your numbers to roman numerals if they are less than 4000 by using the ROMAN function. The example table below shows three columns A, B, and C. Row 7 shows the formulae starting with cell A7. The rest of the rows show values if they formulae are copied down.
Here are four basic ways to convert a number in a cell to text.
Method (1) Format Cells
1) Right click cell(s) of interest and click on “Format Cells…”
2) Under the Number tab Choose Text as your Category
Method (2) Text function
1) use the TEXT function. It has the formatting of =TEXT(Value,Format)
For example, =TEXT(42.6,”0.00″) returns 42.60 as a text value. The formatting is the same as that used in the Format Cells dialogue box.
Method (3) Concatenation with &
Using the ampersand (&), you can concatenate text. For example, the formula =”a”&”b” returns ab. If you concatenate any text to a number (including a null text such as “”) it will return a text value. So, typing the formula =””&70.0 returns 70 as a text. Note the formatting isn’t as convenient as using the TEXT function.
Method (4) Text to Columns
Choosing Data -> Text To Columns from the menu will let you convert your numbers to text. When the dialogue opens up just follow the steps in the Wizard:
Step 1) Choose Delimited and click Next.
Step 2) Tab delimited and click Next.
Step 3) Choose Text as your Coumn Data Format and click Finish.
A very common question for Excel is, “How do I average in Excel?” The simplest way to do this is to use the AVERAGE function. In the example to the left, cell A5 has the following formula:
This returns the Average (mathematical mean) of the three numbers in the range from A1 to A3 inclusively. You can check it by computing (2+3+6)/3 = 3.667.
If you are at the bottom of a column of numbers that you want to average just type
in the cell that you want to show the average in. Before hitting the ENTER key, select the range of cells you want to include in the average. The formula will finish filling in the range and last parenthesis for you after you hit Enter.
Typing the formula below will give the same results as the example, but won’t update when you change any other cells:
Of course, if you want other types of mathematical averages other than the mean (which AVERAGE returns), then the MEDIAN and MODE functions are also available. They work similarly to AVERAGE, but return their respective mathematical counterparts of central tendency. Other tips and advanced averaging functions are available from Microsoft’s help website such as these:
If you want to include logical values and text representations of numbers in a reference as part of the calculation, use the AVERAGEA function.
If you want to calculate the average of only the values that meet certain criteria, use the AVERAGEIF function or the AVERAGEIFS function.
LEAP Bridge Enterprise V12.01.00 is now available. In addition to bug fixes, and code updates, some of the enhancements include the following:
LEAP Bridge v12.01.00.57
Introduced a new analysis option “Integral Abutment Bridge” in the Project tab. This option allows users to analyze and design integral abutment
LEAP CONSPAN v12. 01.00.57
CONSPAN has been updated to comply with the AASHTO LRFD 6th edition. Primary changes are minimum reinforcement requirement changes and Mcr calculations.
LEAP CONBOX v12. 01.00.57
CONBOX now offers three types of temperature loading, including uniform temperature, linear gradient and multi-linear gradient temperature. Multi-linear temperature loading complies with AASHTO, CHBDC, and IRC codes.
LEAP RC-PIER v12. 01.00.57
For integral abutment bridges RC-PIER performs a 3D frame analysis. In the 3D analysis each abutment and pier is part of the full bridge model and is subjected to the loads generated through RC-PIER. Model tab displays both the 3D model and the specific abutment or pier 2D frame with the node and member numbers referenced in the analysis reports.
RISA News has come with a new tutorial on applying wind loads.
Wind loads can be automatically are generated in RISA-3D for building models. RISA calculates the ASCE 7 Main Wind-Force Resisting System loads and calculations are based on the Analytical Procedure for Enclosed Rigid Building for All Heights.
The model has to have a Rigid Diaphragmin order to calculate the wind loads at each floor level.
To apply the wind loads select the Insert drop down menu and select Wind Load. This will open the Wind Load Generator, where you can add all the parameters based on you building location and conditions. The Base Elevation can be used to set the “ground elevation or the lowest point of wind exposure. This is helpful if you are modeling the basement level of the building.
RISA News has published an article on why plate meshing is important. Basic understanding proper plate meshing is required to get reliable results on or Finite Element Mesh. Without proper meshing of plates, inaccurate results are sure to follow. Their example shows how too coarse of a mesh can result in stresses that are only half the magnitude of the actual solution.
As a rule of thumb, if the results change by less than 10% when doubling your mesh you can probably stop submeshing at that point.
RISA News has posted a how-to on appending and merging multiple models into a single model file.
RISA-3D allows you to append, or merge, multiple models into a single model file. This may be helpful if you model single floors in separate files and want to stack them together.
Before appending the files together you must be sure that each file has the same Units and Global Axesdefined. Once this has been verified, open a model and go to File > Append. Then choose the model you wish to add to the currently open model.
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