erection

1. INTRODUCTION 1.1 PROJECT DESCRIPTION 1.2 SCOPE OF WORK 1.3 GENERAL 1.4 DEFINITIONS 1.5 WORK-FLOW CHART 2. RELEVANT SPECIFICATIONS, STANDARDS AND DOCUMENTS 3. INSTALLATION PROCEDURE 3.1 PRELIMINARY CHECKS BEFORE LG SELF-LAUNCHING 3.2 TYPICAL INSTALLATION OF BEARINGS 3.2.1 Remove Permanent Bearings (PB) 3.2.2 Installation of Temporary Bearings (TB) 3.2.3 Installation of span alignment system 3.2.4 Remove Temporary Bearings & installation of Permanent Bearings 3.

1. INTRODUCTION 1.1 GENERAL The purpose of this procedure is to describe the Erection procedure of a span by using the span by span method. This document describes 2 methods of erection:  Segments delivery from ground level  Segments delivery from rear of LG over completed viaduct 1.2 SCOPE OF WORK This procedure is developed for application in the scope of works and applies to all the spans composing the spans of the viaduct superstructure of the HCMC Line 1 Metro Project and erected by launching gantries using the span by span method.