Vsl Strand Post-tensioning Systems

VSL STRAND POST-TENSIONING SYSTEMS

VSL – A REPUTATION FOR EXCELLEN CE SINCE 1956 This technical brochure, ’VSL Strand PostTensioning Systems‘, gives an overview of the of application and provides guidance to practising engineers in the design of post-tensioned structures using VSL post-tensioning systems. The current VSL post-tensioning systems are the result of more than 50 years of experience and continuous research and development. The information published in this brochure is subject to changes without notice. " %& ( ! ! ! ! %& for our design and methods engineers to work ! %& ' ! ( innovative conceptual designs and engineering ! ( %& ( technical sales personnel are dedicated to ( needs and preparing customised solutions for 2 %& ! 3 ! # %& ( 4 5&/ 6 ! 7 %& ( ! 8 %& ( ! ! %& ( 5&/ 3 8&9 ;** 3 5 8&9 ** 3 / ! 9 &4& ?** 3 %& ( ! ! %& ! )* %& ! Hodariyat Bridge, Abu Dhabi - 2009 KEY BENEFITS OF POST-TENSIONING Some of the recognised advantages of post-tensioning are: , . – the implementation of post-tensioning leads to increased crack control ! , / , . , 0 ! " # ! , 1 – the shorter construction periods together with a reduction in construction VSL - HISTORY OF THE GROUP 1956 - @ %& 1966 - 8 %& A 2 1985 - ' ( 1 %& 6& . & BC & D 7 1988 - E ! %& " " #& 1990 - %& F 0 F 1 ( ! 1993 - 8 & 0 & & 4 %& 1 2008 - @ %& 4 ( 2009 - ' %& % 1 ! & D 2013 - 8 %& Mülimatt Sports Centre, Switzerland - 2009 Page 2 Adnec Tower Abu Dhabi, U.A.E - 2009 Page 3

VSL – PROVIDING STATE-OF-THE-ART POST-TENSIONING SYSTEMS " ( ' ! (! ! ! . ' ((/ & 7 / ( * TRAINING: AT THE HEART OF STRONG PERFORMANCE % # & ' ! 8 G**? %& %& 4 ! %& 4 ! formalising and standardising the training of all post-tensioning foremen, supervisors and site %& 4 ! %& training on post-tensioning mock-ups designed to cover all operational procedures and to train our 8 " / 41 * I J1 / 4 ! " K " & ( ! 3 ! for each anchorage and ! for each anchorage and coupler ! ( and concrete strength 4 / 41 * I as well as a whole range of tests for special ENGINEERING SUPPORT . ! ! %& ( ! 5&/ ! 8 products and services, it is also important to W %& %& " " #& ! a leak-tight encapsulation of the tendon and %& ( 6/8 7 ! %& ;?) " J & * ! ( ' %& ! ! 2 ! ! 4 ! %& ! ( %& 9 %& ( ! ! 8 %& %& ( conception, the working procedures and the %& ( 4 ! 3 " % ) ' & ! & G ! people to supervisor level and site manager ! , ! & %& 4 %& ( ! ! ! / 41 * I ! 4 ! LM ! follows: / 4 ! - each component manufacturer is audited ! ! / 4 for independent testing and checking of their properties ! ! / 4 placed on the market with a ) * / ( declaration demonstrating that the product meets ! . %& RESEARCH AND DEVELOPMENT HIGHLIGHTS INTERNATIONAL POST-TENSIONING CERTIFICATION " / 0 ! / 4 ! 6/ 47 9 2 production control as well as independent and " specialist companies, ensuring a professional ( 7 ; " ", ?% @" %J ? %Q@ @" % 0/ / 4 ! 0/ specialist post-tensioning companies provide the ! ! the owners of the structures in which the post ! VSL PT-PLUS %& " " #& duct segmental coupler ! G**N prestressing in match-cast precast segmental structures to optimise the encapsulation at 2 8 is compressed during the joining of segments %& " " #& duct segmental coupler has the following design features: - complete encapsulation of the posttensioning tendons across segment joints isolated tendons in precast segmental structures D ducting segment joint at an angle & " ( M1 "1 6 7 E 2 ;OP0 / 41 * I ! %& M1 "1 2 / 2 %& ( technical staff work with contractors, owners and engineers to evaluate schemes and determine %& ( 0 4 6& F 0 7 / 6& D & 7 ! 0 ! %& ( of information that takes place across the whole %& M %& ! organisations and on committees such as those of and " 8 6" 8 7 8 %& is involved in the preparation of new standards, & G Short sleeve " " #& duct 0 ! Page 4 Page 5

DURABILITY OF POST-TENSIONING TENDONS " ( 6 7 F 2 3 ! ! ! THE VSL STRAND POST-TENSIONING SYSTEMS SOLUTIONS FOR ANY APPLICATION %& ! ! ! ! E ! %& ! W ( 6 L 8 @ & 0 7 F II ! 6" 7 post-tensioning tendons: PL 1: ! " ! %& "8 PL 2: " ! ! ! @ " G ! %& " " #& ducts, which provide a leak-tight encapsulation of the tendon %& "8 ! %& " G ! 6 E"/7 6 7 D PL 3: " G " I ! %& / 8 6/8 7 %& " " #& %& "8 ! ! ! ! " I 0 " " #& duct steel duct ݱ " Protection6 6 ݱ 7I7 ݱ ݱ " G level "/ " I ݱ ݱ G7 Filling material ݱ ݱ ݱ ݱ ݱ A \ ] . ! 6" 7 1. Structural depth medium to large thin VSL SLAB Post-Tensioning System VSL MULTISTRAND Post-Tensioning System Implemented for THIN structural elements, as: - Building slabs - Slabs on grade - Bridge deck slabs (Transverse Tendons) Implemented for structural elements of MEDIUM TO LARGE depth, as: - Bridge girders - Building beams - Transfer plates - Containment structures 2. Structural Design 3. Protection Level Internal Bonded Tendons Internal Bonded Tendons ݱ bonded internal S 6-1 PLUS H /! ! ! I F II /M G*O (0 " 3 & J ! ! ! ! ! ! ! & F II Page 6 Stressing & Dead End Anchorage Coupler P PL 2 PL 3 GC 2) E Sc 2) K H Dead End Anchorage Internal Unbonded Tendons 4) P AF 2) L Protection Level unbonded PL 2 " External Bonded Tendons 1) Protection Level PL 2 VSLab Stressing & Dead S 6-1 Mono End Anchorage PL 1 PL 2 external Stressing & Dead End Anchorage Dead End Anchorage ) . ! ! ! 6" 7 ! ! 8 " Protection Level Protection Level PL 1 3. Protection Level 2. Structural Design isolated M 3 ! G I " " #& ! " 3 [ " ( 3 6 7 6 7 Stressing & Dead End Anchorage PL 3 GC 3) E 2) 3) M 3 * O & * ) / " * O * ) Electrically Isolated Tendons (EIT) ' ! * O * ) For special requirement of Protection Level 3, the VSL Electrically Isolated Tendons (EIT) are implemented 8 ! " G ! G @ / K ! ! " I I @ %& / & ! @ ( L Page 7

VSL BONDED AND UNBONDED SLAB POST-TENSIONING SYSTEM VSL MONOSTRAND UNBONDED SLAB POST-TENSIONING SYSTEM ! " %& A * O ! ! ! ! / ! # * O E"/ 6 7 VSL BONDED SLAB POST-TENSIONING SYSTEM %& ! * O & ! 4 ! " ; - Standard stressing anchorage for - Single anchor in cast iron and a plastic trumpet # # 3 O G O ) b![ c 4 @ 4 # 3 O ! S 6-1 PLUS: - Standard stressing anchorage for 4 plastic trumpet # # 3 O Q 6 * O 7 ( %& d ' " 6) 1 7 " ? M ! * ) * ? ' " 6) 1 7 " ? !f ( E & & W # structure at the far end of the tendon & # O O ) For ! ! %& ! ! ! @ %& or an @ %& ! " ( ! W * - Standard dead-end anchorage - Prestressing force is transferred 6 7 # O O ) 1 D d ' " 6) 1 7 " ? i i i # " ! ** ) ( operations and installation of jacks 0 O " )N Page 8 h * & 2 0 O " )N # ( " & supports should not radii of curvature 6 * 7 * ) for small radii of ! Q ; / ! 3 . G ) " 3 . O * E ! 6& 7 ! ! ? ; " L ! 3 . G ) !f ( ( W ; @ O ) ! " D 6 7 ! D 6 7 E " 0 G " ) Page 9

VSL INTERNAL MULTISTRAND POST- TENSIONING SYSTEM @ # A %& A ! & ! ! " ) %& multistrand applications 0 # O I O )) ; %& ! 6 7 @ %& ! # ! * ) # ) ) )) M 3 * ) ! 6 7 # O I O IN ) ! ! 6 7 # O O )) ( %& working areas for all operations h * Stressing jacks for multistrand tendons are 0 O " )N W # transferred to the structure at the far end of the tendon without access to the anchor & # O G O )) " ( ! 7 " ? i & ( 9 cases, in particular if tendons are left ungrouted during the winter season Q *! D E & 0 O " Page 10 i # ( ) ( and installation of jacks 0 O " )N f ( Data Sheet " & ! a function of the duct diameter: s is less ! * G 6 * G 7 Plastic half-shells are used to prevent * ? O N " " #& * O G O GG )N ) O GN installed in curved sections where . G . !f ( Data Sheet i i i " ! ** 6 7 often used for vertical tendons ! J ( pier-head segments to piers in - Strands are installed into the duct after concreting and ends # O G O GG / j/ is used for 6 L 7 " I* d ' " 6) 1 @ 0 10 / 0 head # O I O IN % 4 ! tendons, where the prestressing structure at the lowest end of the tendon, when there is no access to the dead-end anchorage and concreting # O O I Rmin 2.8 Fpkpk 2.5 m Fpk AM ! . 6 ! ! 73 1 R 1 Relevation 2 1 R pla

This technical brochure, 'VSL Strand Post-Tensioning Systems', gives an overview of the of application and provides guidance to practising engineers in the design of post-tensioned structures using VSL post-tensioning systems. The current VSL post-tensioning systems are the result of more than 50 years of experience