RE Shoring Wall 2017 Shoring Design Software

Frequently Asked Questions

Answers to frequently asked questions RE Shoring Wall. Click on a question to view the answer.

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Shoring Design

Check the Geotechnical Report or consult with the Geotechnical Engineer. Many Geotechnical reports specify which method to use with phrases such as Embedment shall be determined by satisfying horizontal static equilibrium about the bottom of the pile (use Fixed Earth method) or Structural Engineer shall determine embedment by summing moments around the lowest support (use Free Earth method).

For more more information, see the topic Embedment General in the online help system.

Please use the following steps to determine the answer to this question:

1. Embedment Calculation Method: The other shoring program may not be using the same Embedment Calculation Method as RE Shoring Wall. RE Shoring Wall clearly states the embedment method selected/used on the Wall Report.

Some other shoring design applications have one or more of the following limitations:

  • Supports only one embedment calculation method.
  • Does not permit the user to select which embedment calculation method to use.
  • Does not clearly state which embedment calculation method(s) it uses (in a given situation).

If the other application does not permit choosing between Free Earth and Fixed Earth embedment calculation methods, set RE Shoring Wall to use the same method as the program you want to compare it against.

If the other shoring application does not clearly state which embedment calculation method it uses, some research or even a hand calculations may be required to determine what method it uses in a particular design scenario.

2. Factors of Safety: Once you have confirmed that both shoring design applications are using the same embedment calculation method, compare the embedment depths calculated at the depth required to achieve Moment Balance. This is the embedment depth required before any Factors of Safety have been added. In RE Shoring Wall, this depth is listed as Balance Acheived At in the Support Condittions section of the Wall Report.

If the Free Earth method is used by both RE Shoring Wall and the other shoring application, the point of balance should be identical, and any difference in reported embedment depth is a difference in the Factor of Safety used.

If the Fixed Earth method is used by both RE Shoring Wall and the other shoring application, and the point of balance reported by the two programs differs, the other shoring application may be using an outdated method such as Equivalent Beam Theory to estimate where the point of inflection is below the bottom of excavation. Some programs still use this method, which was rendered obsolete with the advent of computers, to solve the Fixed Earth method by putting a hinge in the beam at the point of inflection and reducing the indeterminate beam problem to two beams connected by a hinge. RE Shoring Wall solves the indeterminate beam problem by iterating to a solution, which would take hours without the aid of a computer.

For more information on the subject of embedment and how to confirm the output of RE Shoring Wall another programs such as RISA or SAP, see the help topic Embedment in the online help.

Enter Gravity loads (positive value) and Uplift loads (negative value) into the Applied Axial Load field on the Wall tab in the Shoring Design form.

Enter point loads as very short distributed loads. Vertical point loads can be entered directly. Horizontal point loads must be converted to a distributed load to be entered. Usually a point load can be modeled as a distributed load over a span of one foot, if a smaller distance is required you can model a point load as distributed over 0.1 feet (approximately 1 inch).

See Shoring Design Example 5: Shaft Foundation for Highway Bridge Sign in the online help.

To enter a sloping Active or Passive pressure segment:

1. Use the slope to calculate the End Pressure using the formula:  End Pressure = (End Depth - Begin Depth) * Slope

2. Enter Begin Depth, End Depth, Begin Pressure, and End Pressure.

Yes. RE Shoring Wall can be used to design structures that have lateral forces that are resisted by passive earth pressure with or without supports. Large signage foundations like billboards and overhead highway signage typically use drilled shaft type foundations.

See help topic Shoring Design Example 5: Shaft Foundation for Highway Bridge Sign in the online help.

RE Shoring Wall has the ability to model supports as rigid or as springs. This allows for more accurate estimates of deflection and stresses.

To model a support as a spring: Enter the spring constant (AE/L) in the Spring Constant column of the Supports data grid.

If a support is imposing a vertical load on the wall (total axial load is a non-zero value), select a suitable Axial Capacity Calculation Method from the drop-down list in the Axial Capacity groupbox on the Wall tab. The following table lists which method to use for a given type of structure:

StructureAxial Capacity Method
Soldier Pile Wall (Discrete Element Wall)SHAFT
Sheet Pile WallSHEETPILE
Slurry WallSLURRY

For more information about how each Axial Capacity Calculation Method works see the help topic Calculate Axial Capacity.

For more information on the Axial Capacity form fields, see help topic Shoring Design Form in the online help.

For specific types of shoring systems that can be designed in RE Shoring Wall, see the following table of recommended uses:

Common NameTypical UseUse RE Shoring Wall?See Help
Example #
Gravity WallDesigned
Fixed EarthFree Earth
Soldier Pile WallSite ShoringYES2NONOYESYES
Slurry WallExterior walls for underground structuresYES4NOYESYESYES
Tangent Pile WallCoffer Dam (Waterproof)YES4NOYESYESYES
Secant Pile WallCoffer Dam (Waterproof)YES4NOYESYESYES
Sheetpile WallWaterfront (can be made waterproof)YES1 & 3NOYESYESYES
Trench Box ShoringDitch workNON/ANONON/AN/A
Mine Shaft ShoringMine shaft ceilingsNON/ANOYESN/AN/A
Gabion WallRockslide preventionNON/AYESYESN/AN/A
Block Wall/DamSlide preventionNON/AYESYESN/AN/A
Cantilevered Gravity WallResidential wall/basementNON/AYESYESN/AN/A
Soil Nail WallLandslide prevention/bank stabilizationNON/ANOYESN/AN/A
Shaft FoundationSignage, Gates, FlagpolesYES5NONOYESNO
Calculating Soil PressuresUsed for all but Mine Shaft ShoringYES6N/AN/AN/AN/A

Shoring Design and Project Information data: The data you enter into the Shoring Design and Project Information forms can be saved to an RE Shoring Wall input file from the Shoring Design form by clicking the Save or Save As toolbar button, or selecting Save or Save As from the File menu.

Lagging Design data: All data input into the Lagging Design form is included in the Lagging Report, which can be saved by clicking the Save Report button on the Lagging Report tab after a lagging design run.

Soil Pressure data: All data input into the Lateral Soil Pressure Analysis form is included in the Soil Pressure Report, which can be saved by clicking the Save Report button on the Soil Pressure Report tab after a soil pressure run.

For more information, see the help topic Saving Your Work in the online help.

Open the input file containing the data you want to generate reports for. Click Run. You can now print reports. Note: To print the Code Check Report, a Section or Sheetpile and a Code Version must be selected before clicking Run.

You can also save reports and/or print them to PDF format.

RE Shoring Wall reports are self-contained web pages (everything in one file), which makes them inherently portable. Simply save the report by clicking the Save button on the report viewer tab after a run.

RE Shoring Wall reports can also be printed to a PDF file from any Windows computer that has a PDF print to file printer driver installed. Please note that Microsoft Windows does not have a built-in PDF printer (neither does Mac OSX, most Linux distributions do), but you can instal a (free) third party PDF application that includes a PDF printer driver, such as Foxit Reader or Adobe PDFWriter. For example, Foxit Reader includes a PDF printer that is set as the default printer by default during the installation of Foxit Reader.

Once a PDF printer driver is installed on your computer, you can print reports directly to a PDF file.

To print an RE Shoring Wall report from a report viewer: Click the Print button, then select the PDF printer from the list of Printers (e.g., FoxIt Readerr PDF Printer), then click the Print button and select a folder and file name to save the PDF to.

To print a saved RE Shoring Wall report: Open the saved report in any Web Browser (e.g., Microsoft Internet Explorer or Edge), select Print or press <Ctrl+P>, then select your PDF printer from the Select Printer list, click the Print button, and select the folder and filename to save the PDF to.

Yes. Any number of soil layers can be modeled in RE Shoring Wall. This includes both Active and Passive pressure data. Each of the six sets of Active Pressure data grids and the Passive Pressure data grid allow for modeling any number of soil layers (in the form of pressure segments), and separate Load Factors (one per pressure grid).

In addition, the Lateral Soil Pressure Analysis module can be used to calculate the Active and Passive pressure coefficients for each soil layer if the pressures are unknown (no Geotechnical report available).

Yes. For a composite wall system such as HZ-M King Pile/Sheet Pile, the Moments of Inertia of the King Pile and the Sheet Pile are combined. Then you calculate the average Moments of Inertia (Ix) along the wall. For example, to design a quay wall that will utilize an HZ-M system using RE Shoring Wall:

1. Do a preliminary analysis to determine which products have the required properties for each unique section of the structure to be built. To quickly identify the required Moments of Inertia for the section to be designed, set the Moments of Inertia in RE Shoring Wall to 1000 in^4 and do a trial run. Then check the wall deflection reported in the Delta Max field on the Results tab. For instance, if the Delta Max reported is 2 inches, and the specifications require a maximum deflection of 1 inch, then change Moments of Inertia (Ix) to 2000 in^4.

2. Once the products to be used for the section have been selected, for instance, a double King Pile HZ 880 MA and AZ 18-700 infill panels, look up the Moments of Inertia and the length of the system members in the manufacturers tables. For a Double HZ 880 MA, the Moments of Inertia are 889,890 cm^4 and the length is 984 mm. For the AZ 18-700, the Moments of Inertia are 52,920 cm^4 and the length is 700 mm (2 AZ 18-700's are required). The combined Moments of Inertia are 995,730 cm^4 (7,292 in^4) and the length of the section being designed is 2384 mm (93.9 inches). The Moments per foot are (7292 / 93.9) * 12 = 932 in^4/ft. Enter the value 932 into the Moments of Inertia (Ix^4) field in the Section Properties group box on the Section tab.

The Sheetpile Area Multiplier is a unitless coefficient that is the same, whether expressed in english or metric units.

The product data sheets provided by sheet pile manufacturers include a Coating(s) Area (or similar) column (some have two columns). The values in this column vary by manufacturer, so first check the units specified in this column to determine whether they are providing a) the unitless ratio (which is the correct value to enter for Sheetpile Area Multipler), or b) the coatings area for both sides of a single sheet.

If the units are ft^2/ft^2 (m^2/m^2): These values are the unitless ratio, and can be input directly into the Sheetpile Area Multiplier field.

If the units are ft^2/ft (m^2/m): These values are the coatings area for both sides of a single sheet, and must be converted using the equation Sheetpile Area Multiplier = Coatings Area / (2 * Width). Example:

Sheetpile: ZZ12-700
Coating Area = 5.97 ft^2/ft (1.82 m^2/m)
Width = 27.56 inches (700 mm)

English Conversion:

Sheetpile Area Multiplier = 5.97 / (2 * (27.56 / 12)) = 1.30

Metric Conversion:

Sheetpile Area Multiplier = 1.82 / (2 * (700 / 1000)) = 1.30

Lagging Design

Consult the local building department, suppliers and contractors.

It depends on the duration (how long the lagging will be in place). Pressure treated lagging is not usually required for duration of less than 2 years. Some municipalities (e.g., Seattle, Washington) require all lagging to be pressure treated for any duration. Some timber species cannot be easily treated. The decision will require knowing the codes, type of wood, duration of lagging.

The arching of the wood lagging allows the soil to relax. This relaxing allows for a reduced soil pressure. 50% of the soil pressure is often used for the lagging design. Caltrans Trenching and Shoring Manual recommends using 60% in lieu of a recommendation from a Geotechnical Engineer.

Lateral Soil Pressure Analysis

Coulomb is typically used for non-gravity walls. Rankine is used for gravity walls with footings. For non-gravity walls designed per the AASHTO standard, Coulomb is recommended for Active pressures, and NAVFAC for Passive pressures.

For more detailed information, see the help topic Selecting a Calculation Method in the online help.

If you are performing a shoring analysis per the AASHTO code, AASHTO recommends using the NAVFAC method.

I don't have a geotechnical report with the earth pressure data needed for my shoring design, so I used the Lateral Soil Pressure Analysis form to calculate the earth pressures using the soil parameter data available. The Soil Pressure report includes both Active Pressure and At-Rest Pressure values. Should I enter a) the Active Pressure, or b), the At-Rest Pressure, in the Active Pressure data grid(s)?

The choice of either Active or At-Rest Lateral Earth Pressure is dependent on wall movement and soil type. The range of the lateral outward movement required to develop the full active pressure condition is different for each soil type, where H is the Height of Retained Soil:

  • Granular soil: 0.001H to 0.004H
  • Cohesive soil: 0.01H to 0.04H

We recommend beginning your shoring analysis using the Active Pressure, then find the greatest value in the Displacement column of the Nodal Output table in the Wall Report. This is the maximum deflection. If the maximum deflection does not meet the above criteria, replace the Active Pressure with the At-Rest Pressure and rerun the shoring analysis.

Licensing Options

There are three License Types to choose from: Local, Network Limited, and Network Unlimited. All three types utilize a hardware license key (USB device) for maximum portability, and are floating licenses.

USB Local License:

• Plugs into your computer's USB port.
• Product can be installed on multlple computers (e.g., work and home).
• The local license key controls which computer the software can be used on at any given time. Simple, portable.

USB Network Limited License:

• Plugs into any Windows or Linux computer on your local area network (LAN) that has been configured as a license server.
• Each network limited license key can be programmed for up to 5 users.

USB Network Unlimited License:

• Plugs into any Windows or Linux computer on your local area network (LAN) that has been configured as a license server.
• Each network unlimited license key can be programmed for an unlimited number of users.

For more information regarding Network Licenses, please see the README file on the setup disk.

Local and Network licenses are very similar, but differ in the following ways.

Local License:

• Each Local License can be used by one user at a time.
• Each local license can be used on multiple computers and shared by passing the license key around. The software runs on whichever computer currently has the license key plugged into it.
• The license key must be connected to a USB port on the computer that you want to run the software on.
• You can use the local license key on any computer that has the software installed on it.

Network License:

• Requires running the RE License Server on your local area network.
• The License Server software is included on the RE Shoring Wall setup disk.
• The License Server can be run on any computer (server or workstation) running Microsoft Windows or Linux.
• Network Limited licenses are limited to a maximum of 5 users. Unlimited licenses can support any number of users.

Before ordering a Network License, determine how many users need to use the software at the same time.

Local and Network Licenses:

• You may install the software on any number of computers, regardless of the license type.
• All license types limit the number of concurrent users to the number of users that you have purchased and have license keys for.

You may install our software on as many computers as you like. The license key (or keys, if you purchase more than one) is what controls which computer(s) you can run the software on at any given time.

Local Licenses: Each Local License permits you to run one instance of the software at a time. If you have 5 engineers that will be using RE Shoring Wall, but no more than 3 will need to use it at any given time, they can share 3 Local Licenses. Install RE Shoring Wall on all 5 computers, and have them take turns using the three license keys. RE Shoring Wall can also be installed on more than 1 computer per user, e.g., a home computer or laptop.

We recommend using a license key checkout system to keep track of license keys that are taken home or on the road, to ensure they do not get misplaced/lost.

Network Licenses: Each Network License permits the number of users your purchased to run the sofware at the same time. So, if you purchase a 5 user Network Unlimited License, up to 5 people can use RE Shoring Wall at the same time.

Note that with a Network License (both Limited and Unlimited), a computer on your local area network (LAN) must be running the License Server, and all of the computers you want to run the software on must be connected to your network. Network licenses cannot be shared across networks or over the Internet.

The Local License a great choice in most cases (1 to 3 users). When in doubt, select Local License.

If considering a Network License or a combination, please read the following information to ensure you choose the license type(s) that best fits your needs:

Number of Users: For 1 to 3 users per office/location, we recommend Local Licenses. When 4 or more users will need to use the software, a Network License may be a good choice. You can also buy a Network License and 1 or more Local Licenses.

Portability: Local and Network licenses are portable. The Local License is a better choice when portability is important. For example, if you have the software installed on your desktop at the office, and on your home computer, you can take the license key home when you want to run the software on your home computer. The Local License key does not require installing and running the RE License Server.

Simplicity and Ease of Use: The Local License does not require installing and running the License Server.

Security: Network Keys can connected to a server in a locked room to reduce the possibility that the key will be misplaced or stolen, and control access to the software (e.g., prevent staff from using the software outside of the workplace). If you want to make the Network license key available to staff for home use, you can. Whichever License Type(s) you purchase, we strongly recommend that you ensure that your business insurance covers the replacement cost for lost or stolen keys.

Price: Tiered pricing model for purchase of multiple users (aka, seats). Discount pricing is applied on a per item and per order basis. For example, if you purchase one Local License (1 user) and one single-user Network Limited License, no discounts will be applied. The same would be true if you order two single-user Network Licenses.

Mixed License Types: Any number of Local Licenses can be used in combination with 1 Network License per local network. The Local licenses can be taken out of the office, and do not require a network.

Network Limited and Network Unlimited licenses require RE License Server to be installed and running on one computer that is connected to your local area network (LAN). RE License Server is free software included on the setup disk that your software came on. See the README file on the setup disk for instructions for installing and running the RE License Server.

RE license server performs the following duties:

• Serves available licenses to computers running our software, to enable users to run the software on their computers.
• Keeps track of how many licenses are currently in use (how many users are using the software).
• If all licenses are in use, any other users who try to use the software are informed that all available licenses are currently in use.
• The Server Monitor enables a system administrator (anyone with access to the license server) to see who is currently using the software.

RE License Server can be installed on as many computers as you like, but only one instance of RE License Server can be run on your local area network at a time (if more than one instance is run, it will only cause problems). Therefore, we strongly recommend that you plan accordingly, and purchase one Network License for the maximum number of users at a given location that will need to use the software concurrently.

Helpful Hint: A Network License Key can be used in much the same way as a Local License Key by running RE License Server on the computer that the license key is connected to. So, for instance, you can install RE License Server on a computer at your firm's office, and also on your home computer in case you ever need to run the software at home, e.g., for an important project that needs to be finished over the weekend.

Determine how many people will need to use the software at the same time (number of concurrent users) per office/location. If your firm has multiple offices, identify which offices will need to use the software, and the number of people at each office that will be using the software.

Example: Your firm has 2 offices. Office #1 has 1 engineer that does all the shoring design work. Office #2 has 2 engineers that do shoring design, but only one person needs to use it at a time. Buy 2 Local License. You can buy a third Local License later if both engineers need to do shoring desing at the same time.

If buying Network licenses, you must buy one Network license per office, because the RE License Server only works on a Local Area Network (LAN). It will not work over the Internet.

View our Return Policy for information and limitations regarding Lost or Stolen License Keys and Damaged License Keys.

See the README file on the setup disk for instructions for installing and running the RE License Server.