Looking for Offshore
Leg Penetration Analysis Software?

Independent Software for Geo Technical and Civil Engineers in
Offshore Industry: Renewable Energy and Floating Windfarms

Command Line Interface: Caisson_VHM (output file)

Our software products are built on 35+ years of experience and based on proven technology since 2012 and used by engineers world wide.

INTRODUCING:

CAISSON_VHM & SPUDPEN

LEG PENETRATION ANALYSIS SOFTWARE

Both software programmes can be used to calculate suction (preload) methods for offshore jack-up rigs and spud cans.

Caisson_VHM

Preliminary caisson geotechnical designs are required for two foundation types, namely support and anchor foundations. Both have different design challenges: for top loaded support foundations, it's possible to directly obtain optimum geometries (i.e. factored loads equal factored resistances) for given VHM loads.

Spudpen

Spudpen calculates independent Jack-up rig leg penetration behaviour during preloading according to ISO Standard 19905-1 (2016) including foundation calculation methods, e.g. squeezing for sand and clay calculations. Note: the Spudcan software is CLI (command line interface based) and is text based.

CAISSON VHM

Caisson VHM stands for Caisson Vertical-Horizontal-Moment loading. This refers to the combined loading that caisson foundations are typically subjected to, including vertical, horizontal, and moment loads, during their operation phase. Caisson foundations are commonly used for both onshore and offshore structures, and they need to be designed to withstand these combined VHM loads, which can be caused by factors such as self-weight, wind, and waves. Assessing the performance of caisson foundations under these general VHM loadings is crucial for ensuring their serviceability and ultimate limit states.

About

Program CAISSON_VHM calculates offshore foundation caisson capacity in undrained soils under VHM loadusing a yield function (Kay and Palix, 2010, Kay, 2015).

The latter type is mainly used to anchor floating systems or vessels, as a starter pile for pipeline pulls, or salvaging capsized vessels.

The soil response is assumed undrained, and gives various shear strength profiles between which the program interpolates.

Caisson foundations may be broadly divided into the following two types:

  1. Support foundations (load applied at seafloor)
  2. anchor foundations (load applied at depth below seafloor).

The former foundation type includes usage for:

  1. (oil and gas) subsea templates, manifolds, wellhead and pipeline supports, riser tower bases
  2. (renewables) wind turbines, transformers and met masts, etc.

Offshore Pile Suction Calculation

Specifications

Summary:

"Fast detailed output leg pen results."

Spudpen and Caisson_VHM both are robust, fast and reliable solutions. And when it comes down to their output: You can use the detailed calculated output results in your LPA, soil reporting and survey investigations.

Spudpen

Spudpen leg penetration analysis refers to the calculation of jack-up rig leg penetration behavior during preloading, according to ISO Standard 19905-1 (2016). The main objectives are to predict the final leg penetration depth and identify potential punch-through situations. Spudpen analyses are used to assess the foundation capacity of jack-up rigs, which rely on spudcan footings to spread the load and prevent excessive penetration into the seafloor.

Deep spudcan penetrations can lead to difficulties during the extraction process, especially in clay soils, due to insufficient rig capacity to overcome the extraction resistance. Conventional methods based on bearing capacity formulas, as well as finite element analyses, are used to calculate spudcan penetration and extraction forces at different locations.

These analyses consider factors such as soil conditions, spudcan geometry, and loading conditions to ensure the jack-up rig can be safely installed and extracted.

About

Program CAISSON_VHM calculates offshore foundation caisson capacity in undrained soils under VHM loadusing a yield function (Kay and Palix, 2010, Kay, 2015).

The latter type is mainly used to anchor floating systems or vessels, as a starter pile for pipeline pulls, or salvaging capsized vessels.

The soil response is assumed undrained, and gives various shear strength profiles between which the program interpolates.

The main task objectives are to:

  1. Predict the final leg penetration depth
  2. Identify potential punch-through situations.

Leg Penetration Analysis

Methods used:

Specifications

Specification Summary:

Licensing Fees

OUR PRICING PLANS

Pricing below are ‘starting’ license fees per year and differ per Spudpen and Caisson products, number of users and training. To get exact licensing fee for your needs, please contact us.

Single User
Starting Price

€1650,- Single / Freelance
  • Free updates
  • Free support
  • 800+ Documentation
  • Max 1 person usage
  • 12 months license fee
best option

Multi users
Starting Price

€3960 SME
  • Free Updates
  • Free Support
  • 800+ Documentation
  • Hands-on Training (option)
  • Max x users
  • 12 month license fee

10+ / Unlimited Users
Starting Price TBA

Quote Enterprise
  • Free Updates
  • Free Support
  • Unlimited Person Usage
  • Hands-on Training
  • 12+ Months

Caisson_VHM

€1650,- per Year
  • Free updates
  • Free support
  • Documentation
  • Max 1 person usage
  • 12 months license fee

Spudpen

€1850,- per Year
  • Free updates
  • Free support
  • Documentation
  • Max 1 person usage
  • 12 months license fee

ps. Our Spudpen and Caisson_VHM product licenses include free updates, upgrades and maintenance. 

How do Caisson_VHM and Spudpen work?

Both Caisson_VHM and Spudpen run ‘in the cloud’ – you don’t need to install anything.

Use INPUT Form

We spent some time creating an easy to use INPUT form.

... or IMPORT File

Alternatively you can create a text based input file, which you can manually alter and update with your data.

Generate Output File

Once you hit "calculate" the results are shown in a table format for you to view (including the original output file).

Note: Input form only for SPUDPEN at the moment.
GUI is coming and will be implemented in 2024 for free and no additional cost.

FAQ

You don’t need to install anything. Both programmes: Spudpen and Caisson_VHM run in the cloud, which you can access from any device.

You data is your data to view and stored safely. You can delete your data anytime you want.

There is no limit to how many people can use the software. You can purchase a single license or multiple. Please ask for options if you are not sure – and please keep in mind that it’s not ‘cool’ to share one license amongst many others. We have server bills to pay 🙂

We include free software updates, upgrades and maintenance Yes. Support and consultancy on the other hand is not included.

Book: Intermediate Offshore Foundations

Coverage: Intermediate offshore foundations that are used as anchors for floating platforms and ancillary structures, foundations for steel jackets,, and to support seafloor equipment and offshore windturbines.

"This is the first book dedicated to the geotechnical design of intermediate foundations, and it will appeal to professional engineers specialising in the offshore industry."

Questions / Enquiries? Please, contact us

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Trusted and used by international offshore and engineering companies

• SBM Offshore • SPT Offshore • Multiconsult • DEME • Bluewater • RINA • HDEC Hyundai Engineering & Construction • TotalEnergies

and many more.

Independent Software for Geo and Civil Engineers.​

Foundation is everything.

Get In Touch

We Service Worldwide, but we are based in The Netherlands

Proven since 2012 - forever © All Rights Reserved.

Caisson and Spudpen were originally written by the late Steve Kay - It's because of him, that we can continue his legacy. In the end, it's all about the fundament, that we can build upon.