Author: Professor, Dr. Dietrich Stein - TrenchlessOnline

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Chairman: Menno Henneveld Executive Secretary: John Castle AUSTRIAN ASSOCIATION FOR TRENCHLESS TECHNOLOGY Chairman: Robert Selinger; Secretary: Ute BocciolI AATT Osterreichische VereinigungFur grabenloses Bauen und Instandhalten von Leitungen; Schubertring 14, A-1015 Wien, AUSTRIA; Tel: +43 1 5131 588-0; Fax: +43 1 5131 58825; E-mail: boccioli@oegl.at; Web site: www.oegl.at AUSTRALASIAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Menno Henneveld; Secretary: Jeff Pace ASTT 18 Frinton Place, Greenwood, WA 6024, WESTERN AUSTRALIA; Tel: +61 (0)8 9420 2826; Fax: +61 (0)8 9420 3171; E-mail: jeffpace@astt.com.au; Web site: http://www.astt.com.au BRAZIL SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Sergio A Palazzo; Secretary: Daniel Meloni ABRATT A1. Ogla, 422 cj. 97, Barra Funda — CEP 01155-40, Sao Paulo - SP - 01156-000, BRAZIL; Tel: +55 11 3822 2084; Fax: +55 11 3611 8694; E-mail: info@abratt.org.br; Web site: www.abratt.org.br CHINA HONG KONG SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Ian Vickeridge; Exec. Secretary: Mr Choi, Hon Ting Derek CHKSTT 10/F Hing Lung Commercial Building, 68-74 Bonham Strand East, HONG KONG; Fax: +852 8148 7764; E-mail: info@chkstt.org; Web site: http://www.chkstt.org CHINA TAIPEI SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: (Robert) Sun-Kuei Wang; Secretary: (Bob) W C Chen CTSTT 3F, 92, Sec.4, Roosevelt Rd., Taipei, TAIWAN; Tel: +886 2 8369 5160; Fax: +886 2 8369 5161; E-mail: sunkuei@twd.gov.tw CZECH SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Prof. Milos Karous; Secretary: Dr Jiri Kubalek CZSTT Bezova 1658/1, 147 14 Praha 4, CZECH REPUBLIC; Tel: +420 244 062 722; Fax: +420 244 062 722; E-mail: czstt@czn.cz; Web site: http://www.czstt.cz FINNISH SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Mikko Isakow; Secretary: Jani Vakeva FISTT Pl 493, 00101 Helsinki, FINLAND; Tel: +358 400 439004; Fax: +358 5 7495010; E-mail: jani.vakeva@kymenvesi.fi FRENCH SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Patrice Dupont; Secretary: Monique Lac FSTT 4 rue des Beaumonts, F-94120 Fontenay Sous Bois, FRANCE; Tel: +33 1 53 99 90 20; Fax: +33 1 53 99 90 29; E-mail: FSTT.PARIS@wanadoo.fr; Web site: http://www.fstt.org GERMAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Prof. Dr.-Ing. Jens Hoelterhoff; Secretary: Dr. Klaus Beyer GSTT Messedamm 22, D-14055 Berlin, GERMANY; Tel: +49 30 3038 2143; Fax: +49 30 3038 2079; E-mail: beyer@gstt.de; Web site: http://www.gstt.de IBERIAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Alfredo Avello; Secretary: Elena Zuniga Alcon IBSTT C/Alenza 1, 28003 Madrid, SPAIN; Tel: +34 913 995 093; Fax: +34 913 995 093; E-mail: ibstt@ibstt.org; Web site: www.ibstt.org ITALIAN ASSOCIATION FOR TRENCHLESS TECHNOLOGY Chairman: Paolo Trombett; Secretary: Feliciano Esposto IATT Piazzale degli Eroi, 16, 00163 Rome, ITALY; Tel: +39 06 5725 0065; Fax: +39 06 57287636; E-mail: iatt@iatt.it; Web site: www.iatt.it ISTT was founded in 1986 to advance and promote worldwide the advantages of installing, renovating, repairing and replacing underground pipelines and services with the minimum of excavation. There are two types of membership: the International list, held by the Headquarters in London or through Affiliated Societies in 24 countries and regions of the world. Both types of membership will receive publications on a regular basis organized by ISTT, together with other membership benefits of discounted sales for international conferences and publications. For membership applications, contact your national society (in your own country — see list of affiliates or contact: ISTT 15 Belgrave Square London SW1X 8PS, UK Ph: +44-20-8850-9119 Fax: +44 20-8850-7447 E-mail: info@istt.co.uk Web site: www.istt.com ISTT • A COMPANY LIMITED BY GUARANTEE AND REGISTERED IN LONDON NO. 2053569 ALSO A REGISTERED CHARITY NO. 295274 JAPAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Mr Taigo Matsui; Secretary: Kyoko Kondo JSTT Akasaka Kyowa Bldg, 1-6-14 Akasaka, Minato-Ku, JAPAN; Tel: +81 3 3586 5181; Fax: +81 3 3586 5183; E-mail: jstt@ca.mbn.or.jp; Web site: www.jstt.jp LITHUANIAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Arturas Abromavicius; LIATT c/o UAB SWECO BKG, A. Gostauto Str. 11, LT-01108, Vilnius, Lithuania; Tel: +37 05 2622621; Fax: +37 05 2617507; E-mail: arturas.abromavicius@sweco.lt NETHERLANDS SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Ad de Waal Malefijt; Secretary: Jelle de Boer NSTT Postbus 483, 2700 AL Zoetermeer, THE NETHERLANDS; Tel: +31 (0) 79 3252265; Fax: +31 (0) 79 3252294; E-mail: info@nstt.nl; Web site: http://www.nstt.nl NORTH AMERICAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Piero Salvo; Secretary: John Hemphill NASTT 1655 North Fort Myer Dr., Ste 700, Arlington, Virginia 22209, USA; Tel: +1 703 351 5252; Fax: +1 703 739 6672; E-mail: nastt@nastt.org; Web site: http://www.nastt.org POLISH FOUNDATION FOR TRENCHLESS TECHNOLOGY Chairman: Andrzej Kuliczkowski; Secretary: Marek Banasik PFTT 25-001 Kielce 1, SKR. Pocztowa 1453, POLAND; Tel: +48 41 3622145; Fax: +48 22 642 13 44; E-MAIL akulicz@tu.kielce.pl RUSSIAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Stanislav Vladimirovich Khramenkov; Secretary: Elana Viktorovna Guesenkova RSTT Odinzovskii Arrears, "Marfino", 99 143025, MA, RUSSIA; Tel: +7 (495) 290 90 36; 598 96 91; Fax: +7 (495) 290 90 36; E-mail: robt@co.ru; Web site: http://www.robt.ru SCANDANAVIAN SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Magnar Sekse; Secretary: Bjorn Widman SSTT Agatan 15B, SE-745 35 Enkoping, SWEDEN; Tel: +46 171 44 02 60; E-mail: rolf.alm@tfab.se; Web site: http://www.sstt-skandinavien.com SOUTH AFRICA SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Craig Burnie; Secretary: Joop van Wamelen SASTT PO Box 13048, Clubview, Centurion, 0014, SOUTH AFRICA; Tel: +27 12 567 4026; E-mail: director@sastt.org.za; Web site: http://www.sastt.org.za UKRAINE SOCIETY FOR TRENCHLESS TECHNOLOGY President: Volodymyr Markivsky; Secretary: Olga Martynyuk USTT Solomenskaja Str.3, Kiev 03110, UKRAINE; Tel/Fax: +380 044 276 42 80; E-mail: ustt@ukr.net UNITED KINGDOM SOCIETY FOR TRENCHLESS TECHNOLOGY Chairman: Russell Fairhurst; Secretary: Val Chamberlain UKSTT 38 Holly Walk, Leamington Spa, Warwickshire, CV32 4LY; Tel: +44 (0)1926 330 935; Fax: +44 (0)1926 330 935; E-mail: admin@ukstt.org.uk; Web site: http://www.ukstt.org.uk 58 TRENCHLESS TECHNOLOGY September 2007 www.trenchlessonline.com
TECHNICAL FORUM Choosing a Manhole Frame-Chimney Seal Nearly all SSES and I/I studies conducted have drawn the same conclusion — that manhole frame-chimney inflow is one of the most significant sources of leakage in the entire sewer system. Large quantities of clear water can be prevented from ever entering the sewer system by sealing the framechimney joint area of sanitary manholes. Many different methods have been tried in an attempt to seal this area of the manhole and new methods and technologies are being developed and proposed all the time. The frame-chimney joint area in manholes is one that is difficult to seal long term due to any number of the following factors: Thermal expansion and contraction of the pavement, freeze-thaw cycles and ground movement cause the frame to move vertically, as well as laterally with respect to the top of the manhole structure. Traffic loading subjects the frame to continuous impact and jarring. The cast-iron frame and masonry of the manhole structure have different thermal coefficients and surface textures, making it difficult to provide a watertight bond between the two surfaces. Based on these factors,NASSCO states in its “Specifications Guidelines/ Wastewater Collection Systems Maintenance and Rehabilitation, SG-12” that: CALENDAR 2007 23-26 DSS, Cleveland, Ohio, AWWA, (303) 347-6240; E-mail: dtrujillo@awwa.org; Web: www.awwa.org 27-28 Pipe and Pipeline Renewal seminar, New York Metro Area (Secaucus, N.J.), ASCE, (800) 548-2723; E-mail: conted@asce.org; Web: www.asce.org OCTOBER 1-5 IPLOCA Convention, Sydney, Australia, Web: www.iploca.com 13-17 WEFTEC 2007 Annual Conference & Expo, San Diego, WEF (800) 666-0206 16-19 ICUEE 2007, Louisville, Ky, (800) 867-6060; Fax: (414) 272-2672; E-mail: info@icuee.com; Web: www.icuee.com 17-19 DCA-Europe Annual Congress, Dresden, Germany, DCA-Europe, Web: www.dca-europe.de NOVEMBER 7-8 Dealing with Challenges of Horizontal Directional Drilling (HDD), GEO- DELFT, Delft, The Netherlands, E-mail: sales@delftgeoacademy.com. DECEMBER 4-7 CONEXPO Asia 2007, Guangzhou, China, (414) 298-4167 or +86-10- 8519-1566 in China, E-mail: info@conexpoasia.com www.trenchlessonline.com “Manhole frame sealing includes the sealing of the frame joint area and the chimney above the cone of the manhole with either a manufactured or applied internal or external flexible seal. The seal shall be designed to prevent leakage of water into the manhole through these areas throughout a minimum 25-year design life.The installed seal shall remain flexible, to allow for repeated vertical movements of the frame due to frost lift, ground movement or other causes of not less than 2 in. and/or repeated horizontal movement of the frame due to thermal movement of pavement or other causes of not less than a half inch throughout the design life.” All frame-chimney seals, whether they are manufactured or applied, fall into four basic categories. Rigid Seal — This type of seal includes bolting the frame to the precast cone, extending cementitious liner material from the manhole wall up onto the frame, setting the frame in a bed or mortar, encasing the frame and entire chimney area in a poured concrete collar or the use of any other type of non-flexible material or liner. Semi Rigid or Semi Flexible — This type of seal typically involves the use of some type of sealing material, such as butyl rubber mastic, between the frame, grade adjusting rings and manhole cone joints. Flexible Membrane — This type of seal is created by applying a flexible coating or Other Notable Events By Lee Haessig membrane to either the inside or outside surfaces of the frame extending down onto the manhole chimney and/or cone. Materials may include epoxies, urethanes, rubber or heat shrinkable sleeves. Manufactured Flexible Rubber — This type of seal is pre-fabricated from a high-quality rubber material and is installed either on the inside or outside of the frame-chimney joint area by expanding or tightening corrosion resistant bands with a mechanical tightening device. Therefore, community and/or engineers have many things to consider when deciding which frame-chimney seal to use; they must decide whether the seal can meet expected design life and performance requirements, as well as ease of installation and future maintenance and replacement needs. Different methods will have different end results and a successful manhole rehabilitation project will depend on how much emphasis is put into factors such as design life, material performance and proven success in actual field conditions.The bottom line is that the cheapest method at the time of bid quite often ends up costing more in the long run. Lee Haessig is northeast regional manager with Cretex Specialty Products, which is headquartered in Waukesha, Wis. 2007 18-19 New OrleansTrenchless Road Show, New Orleans, Benjamin Media Inc., Ph: (330) 467-7588; Fax: (330) 468-2289; E-mail: info@benjaminmedia.com; Web: www.rehabroadshow.com NOVEMBER 13-14 Miami Trenchless Road Show, Miami, Benjamin Media Inc., Ph: (330) 467-7588; Fax: (330) 468-2289; E-mail: info@benjaminmedia.com; Web: www.rehabroadshow.com 27-28 Asset Management: Bridging the Gap Between Theory & Practice Atlanta, Benjamin Media Inc., Ph: (330) 467-7588; Fax: (330) 468-2289; E-mail: info@benjaminmedia.com; Web: www.uimonline.com 2008 JANUARY 22-24 Digital City EXPO, Phoenix, Benjamin Media Inc., Ph: (330) 467-7588, Fax: (330) 468-2289, E-mail: info@benjaminmedia.com, Web: www.digitalcityexpo.com. September 2007 TRENCHLESS TECHNOLOGY 59
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Author: Professor, Dr. Dietrich Stein - TrenchlessOnline

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