Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 06: Concrete and Steel Works  Ref. Ares(2021)2862184 - 29/04/2021 1 of 18  VOLUME 3  Section 6: Concrete and Steel Works  TABLE OF CONTENTS  6$_{ }$ Concrete and Steel Works ..................................................................................3$_{ }$ 6.1$_{ }$ Concrete Works ..................................................................................................... 3$_{ }$ 6.1.1$_{ }$ Scope ..................................................................................................................... 3$_{ }$ 6.1.2$_{ }$ Standards and rules................................................................................................ 3$_{ }$ 6.1.3$_{ }$ Record of concreting ............................................................................................. 4$_{ }$ 6.1.4$_{ }$ Classes of concrete ................................................................................................ 4$_{ }$ 6.1.5$_{ }$ Organisation of concrete production at the site ..................................................... 5$_{ }$ 6.1.6$_{ }$ Ready-mixed concrete ........................................................................................... 5$_{ }$ 6.1.7$_{ }$ Materials and testing.............................................................................................. 5$_{ }$ 6.1.8$_{ }$ Mixing and testing ................................................................................................. 8$_{ }$ 6.1.9$_{ }$ Formwork .............................................................................................................. 8$_{ }$ 6.1.10$_{ }$ Placing and compaction of concrete ...................................................................... 9$_{ }$ 6.1.11$_{ }$ Joints...................................................................................................................... 14$_{ }$ 6.1.12$_{ }$ Waterstops ............................................................................................................. 15$_{ }$ 6.1.13$_{ }$ Testing of tanks ..................................................................................................... 16$_{ }$ 6.1.14$_{ }$ Tolerances of dimension and surfaces of in-situ concrete..................................... 16$_{ }$ 6.1.15$_{ }$ Remedial treatment of concrete surfaces............................................................... 17$_{ }$ 6.1.16$_{ }$ Dry-pack mortar .................................................................................................... 18$_{ }$ 6.2$_{ }$ Steel Reinforcement .............................................................................................. 18$_{ }$ 6.2.1$_{ }$ Types, quality and storage ..................................................................................... 18$_{ }$ 6.2.2$_{ }$ Bending and cutting schedules .............................................................................. 19$_{ }$ 6.2.3$_{ }$ Protection and cleaning ......................................................................................... 19$_{ }$ 6.2.4$_{ }$ Bending of bars...................................................................................................... 19$_{ }$ 6.2.5$_{ }$ Cutting of wire fabrics........................................................................................... 19$_{ }$ 6.2.6$_{ }$ Lapping of bars and wire fabrics ........................................................................... 19$_{ }$ 6.2.7$_{ }$ Fixing of reinforcement ......................................................................................... 19$_{ }$ 6.2.8$_{ }$ Thickness of cover................................................................................................. 20$_{ }$ 6.2.9$_{ }$ Tolerances.............................................................................................................. 20$_{ }$ 6.2.10$_{ }$ Approval before concreting ................................................................................... 20$_{ }$ 6_Vol3_d4.3_Section 6 Concrete and steel works_en_GIR_rev6.docx 