REGISTRATION NO LONGER POSSIBLE

We hereby cordially invite you again for a unique walk across the bottom of the new Sluiskolk near Eefde and excursion to the construction site. It is the last time you will be able to admire the lock dry because in mid-November 2019, water will be released into the lock chamber.

Also very unique: this time you can admire the segment door in all its glory in its final place in the lock head. A unique steel lock gate construction that has not been used in the Netherlands before.

1 Introduction KIVI Kring Stedendriehoek
Our circle of purely engineers with very diverse disciplines meets every second Tuesday of the month at 18:00 in restaurant Het Bosrestaurant at Joppelaan 100 in Gorssel (Joppe). The evenings last until around 21:00 (when it is very sociable, it sometimes goes on until 21:30). We are happy to welcome new circle members. On average, our circle members live or work up to about an hour's drive from Gorssel.

During these meetings, very diverse, often technical, subjects are discussed in a good, friendly atmosphere. The meetings always involve a lot of interaction and discussion. Besides the fact that you are informed and can discuss a wide range of topics, it is great fun to get to know each other. The ambiance is chosen with care. The dinner we have together is always of excellent quality. Moreover, there is plenty of opportunity for networking and starting friendly conversations.

2 Your speakers this afternoon
On Tuesday 10 September 2019, ir. Ernst Rijsdijk, ing. Gerold Schaap, Mr Paul Schaap and Mr Ruud Schoenmakers will give a short presentation on the new lock chamber at Eefde.

Ernst is employed by RWS. Ernst is the environment manager and deals with the project and how the environment is and will be involved in the creation of the new lock.

Gerold works at Mobilis | TBI and, as tender manager, supervised and contracted this project. He is now project director and ultimately responsible for the entire 27-year DBFM contract.

Paul is employed by Croonwolter&dros | TBI and is the project manager for the installations. Paul first pulled the integral design of the entire lock. Over the next six months, Paul will be responsible for the construction and implementation, testing and commissioning of the technical installations.

Ruud is employed by Mobilis Infra Assetmanagement | TBI and Ruud is Maintenance Company Manager and responsible for maintenance over the next 27 years.

3 Your programme

Part A Restaurant De Sluis - Schoolstraat 70 7211BD Eefde - www.restaurantdesluis.nl

16:00 - 16:30 Walk-in & reception with coffee and tea at Restaurant De Sluis

16:30 - 16:35 Welcome on behalf of combination Lock to Twente by ing. G. Schaap, L2T/Mobilis

16:35 - 16:40 Welcome on behalf of KIVI Kring Stedendriehoek by ing. E. Oosterveld, Tauw/KIVI

16:40 - 17:00 Project in its environment by RWS by ir. R.E. Rijsdijk, RWS

17:00 - 17:30 Technical Installation and operation by Mr Paul Schaap, L2T/Mobilis

17:30 - 18:00 Maintenance / Lifecycle optimisations by ir. Ruud Schoenmakers, L2T/Mobilis

Part B Construction site Sluis Eefde - Kanaalpad - 7211 CH Eefde (green chain complex)

18:00 - 18:10 Walking to the lock

18:10 - 19:15 Working visit in groups of max 6 visitors led by a guide.

Part C Restaurant De Sluis - Schoolstraat 70 - 7211 BD Eefde - www.restaurantdesluis.nl

19:30 - 21:00 Joint dinner, chat and answer questions (all)

4 The Eefde Lock project

At the end of 2016, as part of capacity expansion, Rijkswaterstaat commissioned the Lock to Twente (L2T) contractor combination to build a second lock at Eefde.

The second lock chamber at Eefde will reduce waiting times for ships and make this important access to Twente less vulnerable during maintenance and calamities. The new lock chamber is suitable for class Va vessels, the largest type of ship allowed after the Twente canals were widened. The lock will have a segment door, unique in the Netherlands, which lies flat on the bottom when the lock is open. The segment door will be raised when the lock closes.

Segment gate

This clever piece of hydraulic engineering also works in the event of a sudden very high water flow/pressure, for example due to a calamity. If a ship enters the lock from the Twente Canal and breaks the two segment doors on the IJssel side, the Twente Canal empties into the IJssel. At that moment, the segment door can still be closed against the flow of water.

New lock chamber next to the old lock chamber

Front view from the IJssel

L2T, a partnership between TBI companies Mobilis [Civil Engineering] and Croonwolters&dros [Technical Installations], is responsible for the pre-financing, design, construction and 27-year maintenance of the new lock.

During the tender phase, Tauw and Movares et al advised the contractor consortium and Mobilis, together with Tauw and Movares et al, are in the final stages of the execution design. The actual construction of the second lock chamber started in February 2018 and the first ships will sail through the new lock in mid-2020.

5 Details and notification

Because we will have dinner at a different location this time, everyone must register via the site both for the excursion and the dinner. KIVI Circle members Stedendriehoek should also register via this site. Drinks during the excursion will be paid for by KIVI Construction and Hydraulic Engineering. The costs for the appetiser and buffet are €22.50 plus drinks. After the dinner, you should settle these yourself with Restaurant De Sluis.

You can choose from the following four options when registering:

1. I will only take part in the excursion

Yes / No

2. I will take part in the excursion + dinner

Yes / No

3. I will only take part in the dinner

Yes / No

4. Ii want a vegetarian meal

Yes / No

Safety: Everyone should provide their own safety shoes. No safety shoes unfortunately means no access to the work area.

Information: Ernst Oosterveld, ernst.oosterveld@tauw.com

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