Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 05: Earth Works, Pipe Works and Ground Improvement  Ref. Ares(2021)2862184 - 29/04/2021 1 of 49 TABLE OF CONTENTS  5$_{ }$ EARTH WORKS, PIPE WORKS AND GROUND IMPROVEMENT.........5$_{ }$ 5.1$_{ }$ Site Investigations ................................................................................................. 5$_{ }$ 5.1.1$_{ }$ General .................................................................................................................. 5$_{ }$ 5.1.2$_{ }$ Standards and rules................................................................................................ 5$_{ }$ 5.1.3$_{ }$ Geotechnical report and ground improvement ...................................................... 6$_{ }$ 5.1.4$_{ }$ Tests on ground water............................................................................................ 6$_{ }$ 5.1.5$_{ }$ Design of structures ............................................................................................... 6$_{ }$ 5.2$_{ }$ Earth Works........................................................................................................... 7$_{ }$ 5.2.1$_{ }$ General .................................................................................................................. 7$_{ }$ 5.2.2$_{ }$ Traffic requirements .............................................................................................. 7$_{ }$ 5.2.3$_{ }$ Extent of excavations............................................................................................. 8$_{ }$ 5.2.4$_{ }$ Relocation of possible utilities and trial holes....................................................... 8$_{ }$ 5.2.5$_{ }$ Intersections with roads, highways and railroads .................................................. 9$_{ }$ 5.2.6$_{ }$ Drainage and dewatering ....................................................................................... 9$_{ }$ 5.2.7$_{ }$ Excavation ............................................................................................................. 9$_{ }$ 5.2.7.1$_{ }$ General .................................................................................................................. 9$_{ }$ 5.2.7.2$_{ }$ Excavation for structures ....................................................................................... 10$_{ }$ 5.2.7.3$_{ }$ Tolerance ............................................................................................................... 10$_{ }$ 5.2.7.4$_{ }$ Slips, falls and excess excavations ........................................................................ 10$_{ }$ 5.2.7.5$_{ }$ Safety of excavation and adjacent structures......................................................... 10$_{ }$ 5.2.7.6$_{ }$ Sheeting and Bracing............................................................................................. 11$_{ }$ 5.2.7.7$_{ }$ Stripping of topsoil ................................................................................................ 11$_{ }$ 5.2.8$_{ }$ Preparation of Foundation ..................................................................................... 11$_{ }$ 5.2.9$_{ }$ Backfilling and filling............................................................................................ 12$_{ }$ 5.2.9.1$_{ }$ Fill Materials in General........................................................................................ 12$_{ }$ 5_Vol3_d4.3_Section 5 Earth and pipe works_en_GIR_rev6.docx  VOLUME 3  Section 5: Earth Works, Pipe Works and  Ground Improvement 