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1 Lockable Dowels cont/.. Left (Fig 3): Lockable dowel components. Far left (Fig 4): Once movement has stabilised and the joint has been filled, the plate and resin are used to lock the dowel. The dowel and sleeve components allow shrinkage of the concrete to Ptnews Newsletter 4 - 2010. take place; the box-section sleeve allows lateral, longitudinal and some President's Report rotational movement to occur in this initial stage. The construction industry in Australia continues to PTIA continues to lobby site safety authorities and After a predetermined time, generally recover but activity is different across the country.

2 Regulators to require a minimum level of training and 60-120 days, when movement has Ancon Lockable Dowels Post-tensioning and supply companies operating in experience of employees handling PT particularly those stabilised and the joint has been filled, the dowel is locked in Dowels transfer load across joints in concrete and are used different states are seeing quiet varied results in their involved in the stressing process. Any assistance that position with the plate and the resin. with a sleeve component where movement is required. members or contractors with whom you work can give The void former allows inspection of the dowel before the operating areas.

3 This reflects the variation in general Ancon furthered this principle by engineering a shear load in ensuring a better work place would be appreciated. joint is locked. The fan-shaped locking plate, which allows the public optimism and activity in those states doing connector which could be locked after an initial phase of Making clients and contractors aware of the importance of movement. dowel to be locked in any position in the sleeve, is inserted well and the more cautious approach where local training will produce beneficial results for all concerned.

4 Around one of the grooves on the dowel before the controlled political concern exists. The lockable dowel comprises a stainless steel dowel, a box- The PTIA Skills Training course is now part of the Steel amount of epoxy resin is inserted from the top of the slab. section sleeve with an L-shaped void former, a locking plate Fixers Certificate III nationally accredited program. In The void former is topped with cementitious material to We are hopeful all areas will improve and return and litres of a two-part epoxy resin (Fig. 3). 2011, a short version of this course, incorporating the complete the installation.

5 When locked, the dowel continues prosperous actively for PTIA member companies in the One end of the dowel component is threaded with a to transfer vertical load but further movement is prevented White Card (Construction General Safety Induction), will coming months. nut and washer for additional anchorage and the other from taking place. The lockable dowel range includes be available for site engineers, site and project managers, features a series of grooves to accept the locking plate. standard solutions for slab-to-slab and slab-to-wall joints.

6 The good news is that stability seems to have returned to and safety officers involved with PT. Please contact PTIA. For more information, visit most material and labour costs ensuring a better control to make application for these courses. Member Companies of activities for members. Of great significance to the PT. The 2010 annual general meeting will be held in Brisbane Corporate Members Refobar Australia Parsons Brinkerhoff suppliers, steel prices do seem to be stable until at least on 24 November prior to the Concrete Institute seminar Australian Prestressing Services Pty Ltd Sanwa Pty Ltd SCP Consulting Pty Ltd early next year allowing more accuracy and security in in Brisbane at which the Queensland Branch of PTIA.

7 (founding member) Severs Technical Systems Pty Ltd Taylor Thomson Whitting tendering. Usha Martin Australia Pty Ltd will present on Innovations in Post-Tensioning Design &. Structural Systems Pty Ltd (founding New Members PTIA continues to pursue training of site employees and Applications. All members are welcome to attend. member) Associate Members . VSL Australia Pty Ltd (founding member) PTIA welcomes this continues as a major priority. We consider proper consulting engineers On behalf of the Board of PTIA, I take this opportunity to Ancon Building Products and training a major safety requirement for post-tensioning Associate Members suppliers ABC Consultants wish you and your families a Merry Christmas and a Safe Arup Parsons Brinkerhoff as operators.

8 It is important that contractors using PT. Ajax Foundry Pty Ltd and Happy New Year. new Associate Members. on their projects ensure site staff involved with these Ancon Building Products Bornhorst + Ward Pty Ltd We also welcome Feris Chehade activities have the training and experience necessary for Michael O'Neill Haggie Reid Pty Ltd Costin Roe Consulting Pty Ltd (Univ of Sydney) and Akbar Rouhi Holcim (Australia) Pty Ltd Hyder Consulting Pty Ltd the task. President (Curtain Univ of Technology) as new OneSteel Wire Pty Ltd McVeigh Consultants Pty Ltd Student Members.

9 PTIA Seminars On Web Site During 2010, PTIA conducted seminars with Concrete Institute of Australia in Melbourne, Hobart, Perth and Brisbane, and with IE(Aust). in Newcastle. Copies of these and past presentations are on the PTIA web site, under the Downloads tab. Copies of past PTIA Newsletters, and other news articles, can be found under the News and Events tab. ensuring excellence and accreditation for the post-tensioning industry . Post-Tensioning Institute of Australia Limited ABN 86 121 218 228 PO Box 861, Five Dock NSW 2046. Telephone: 02 8765 6199 Facsimile: 02 9743 4013 Email: Web: 1.

10 Project Report Ancon Lockable Dowels Speed Construction on Hospital Site Bovis Lend Lease has installed over 5,000 Lockable Dowels in the post-tensioned concrete frame of the new Royal Children's Hospital in Melbourne. Use of these dowels at temporary movement joints has Gateway Upgrade Project replaced the need for one metre wide pour strips to be left and for slabs to be propped. This has improved site Location: Brisbane, Queensland access and allowed building services, such as overhead Client: Queensland Motorway Limited cabling, to be installed without delay.