TUCSS Monthly Seminar no. 263

Event details

TUCSS Monthly Seminar No. 263 –Thursday, 17 July 2025, 6.30 pm

Water Management of retaining and underground constructions with monolithic drainage mesh solution

by Johnny Poulsen, CEO, Dolenco Tunnel Systems, Denmark

Abstract

Managing groundwater in underground construction remains a persistent challenge for engineers. Water ingress and the resulting hydrostatic pressure can cause long-term damage to tunnel linings and retaining structures, leading to deterioration, corrosion, and costly maintenance. Methods of managing water pressure is a difficult discipline and soil conditions can be uncertain and risky, both during construction and over the lifetime of the structure.

The webinar explores an approach to addressing water pressure in underground structures using a systematic, continuous drainage approach, integrated in monolithic shotcrete layers. The design enables water to be redirected before it accumulates behind the lining, helping drastically reduce construction time, cost and CO2 consumption and maintain structural integrity over time. The webinar will present examples of how this approach can be applied in different construction methods

Speaker

Johnny Poulsen has over 25 years of experience of building markets for waterproofing and concrete repair solutions, he has founded and managed businesses in distribution and subcontracting of a wide range of specialized solutions. Johnny Poulsen has during this time accumulated know how and expertise on tunnel and underground structures on the international market. With his experience, he has been leading the development of new, innovative business solutions, to accommodate the changing needs in underground construction and continues to develop and adapt in the increasingly changing conditions for construction.

Time and Place

The presentation will take place electronically on Thursday, 17 July 2025 at 18:30 hrs. The presentation will take approximately 45 minutes, follow by 15 minutes of questions/discussion.

Invitation

This is the 263^rd in a series of presentations by TUCSS and is open to current TUCSS Members only. Seats are on first-come-first-served basis and limited to 500 persons.

Registration

Individual Members are to sign up for the seminar via their TUCSS account on the TUCSS Website. The details on how to access the seminar will be sent to the members who has successfully signed up for the seminar, at a date nearer to the seminar. The deadline for registration is on Monday, 7 July 2025 or when total registered participants reaches 500 whichever comes earlier.

*TUCSS Corporate Members limited to 5 registrations only. For TUCSS Corporate members, please email us the following information (name, TUCSS Corporate membership number, company name, email address, PE/RE/RTO number if applicable).

Attendance Policy

For members who require certificate of attendance, please note of the attendance policy:

-        Login at the beginning of the seminar (link will be assessable at 18:15 hours)

-        Evidence of participation by video switched on throughout the seminar

-        Complete the quiz at the end of the seminar before logging out. The duration for the quiz is 15mins.

Certificate of Attendance will be uploaded to the member’s account after the compliance to the Attendance Policy is verified.

PDU/STU

Points have been applied and pending approval.

Speaker

Johnny Poulsen

Dolenco Tunnel Systems, Denmark