1 of 18  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 06: Concrete and Steel Works  6.3$_{ }$ Precast Concrete Units........................................................................................... 21$_{ }$ 6.3.1$_{ }$ General .................................................................................................................. 21$_{ }$ 6.3.2$_{ }$ Concrete quality and tests on concrete .................................................................. 21$_{ }$ 6.3.3$_{ }$ Cast-in parts........................................................................................................... 21$_{ }$ 6.3.4$_{ }$ Transport, storage and erection ............................................................................. 21$_{ }$ 6.3.5$_{ }$ Installation of precast concrete .............................................................................. 22$_{ }$ 6.3.6$_{ }$ Manufacturing in a factory .................................................................................... 22$_{ }$ 6.3.7$_{ }$ Work programme and method statement............................................................... 22$_{ }$ 6.4$_{ }$ Steelworks ............................................................................................................. 22$_{ }$ 6.4.1$_{ }$ General .................................................................................................................. 22$_{ }$ 6.4.2$_{ }$ Standards and rules................................................................................................ 23$_{ }$ 6.4.3$_{ }$ Quality and testing of materials............................................................................. 24$_{ }$ 6.4.4$_{ }$ Manhole and access covers and frames ................................................................. 24$_{ }$ 6.4.5$_{ }$ Surface boxes......................................................................................................... 25$_{ }$ 6.4.6$_{ }$ Ladders and step irons ........................................................................................... 25$_{ }$ 6.4.7$_{ }$ Steel stairways in buildings ................................................................................... 25$_{ }$ 6.4.8$_{ }$ Handrails in buildings............................................................................................ 25$_{ }$ 6.4.9$_{ }$ Structural steelwork............................................................................................... 26$_{ }$ 6.4.10$_{ }$ Bolts and nuts ........................................................................................................ 26$_{ }$ 6.4.11$_{ }$ Welding ................................................................................................................. 26$_{ }$ 6.4.12$_{ }$ Fabrication tolerances............................................................................................ 27$_{ }$ 6.4.13$_{ }$ Dissimilar metals ................................................................................................... 27$_{ }$ 6.4.14$_{ }$ Stainless steel......................................................................................................... 28$_{ }$ 6.5$_{ }$ Structural Design Requirements............................................................................ 28$_{ }$ 6.5.1$_{ }$ General .................................................................................................................. 28$_{ }$ 6.5.2$_{ }$ Minimum structural requirements ......................................................................... 28$_{ }$ 6.5.3$_{ }$ Loads, characteristic values ................................................................................... 29$_{ }$ 6.5.4$_{ }$ Load Combinations ............................................................................................... 30$_{ }$ 6.5.5$_{ }$ Calculations ........................................................................................................... 31$_{ }$ 6_Vol3_d4.3_Section 6 Concrete and steel works_en_GIR_rev6.docx 