Tenders Are Invited For Construction-Site Supervision Services - Selection Of A Contractor For The Preparati ... in Bulgaria

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Construction-Site Supervision Services - Selection Of A Contractor For The Preparation Of A Complex Report For The Assessment Of Compliance With The Main Requirements For Construction And Technical Control Under The Constructive Part And The Exercise Of Construction Supervision For The Site: Agricultural Overpass On The Road I-6 Sofia - Burgas At Km 381+968. The Subject Of This Public Procurement Is Selection Of A Contractor For The Preparation Of A Complex Report For The Assessment Of Compliance With The Basic Requirements For Construction And Technical Control Under The Constructive Part And The Exercise Of Construction Supervision During Construction For The Site: Agricultural Overpass On The Road I-6 Sofia - Burgas At Km 381+968. The Purpose Of The Public Procurement Is For The Road Infrastructure Agency To Identify A Contractor (Consultant) And Conclude A Contract With Him, For The Preparation Of A Complex Report For The Assessment Of Compliance With The Basic Requirements For Construction And Technical Control Under The Constructive Part And The Exercise Of Construction Supervision During The Construction Of The Site, With A View To Carrying Out Quality Construction Of The Site In Accordance With The Regulatory Requirements And Compliance With The Agreed Deadlines. 1. Existing Situation: Built In 1973. It Is Intended For The Movement Of Agricultural Machinery. The Bridge Has Three Openings (11.00+20.00+11.00) M And A Total Length Of 42.16 M. The Width Dimension Is 6.00 M., Including A Road Surface Of 4.50 M And Two Sidewalks Of 0.75 M Each. The Total Width Of The Superstructure Is 6.50 M. Its Height Dimension Is 4.65 M. The Situational Overpass Is In A Straight Stretch Of Road, And A Level In A Convex Vertical Curve. After An Inspection Of The Facility, An Opinion Was Drawn Up Ex. No. 33-00-297/14.04.2016. From Ipm. The Road Surface Is Asphalt Concrete, The Sidewalks Are Flagstones. Steel Railings Have Been Installed On The Overpass, But There Is No Osp. Transverse Cracks Are Observed In The Asphalt Pavement In The Area Of ​​The Joints Of The Piers, Abutments And Approaches Of The Bridge. The Paving Blocks Are In Relatively Good Condition. There Are Elements Missing From The Steel Railing. The Superstructure Is Reinforced Concrete, Plate Girder, Simple Beam Type. The Main Beams Are Prefabricated, 3 Pcs. In A Hole, Made Of Ordinary Reinforced Concrete, Through 2.40 M Axially, With Dimensions: Height 140 Cm, Width Of The Belts 40 Cm And Width Of The Stem 24 Cm. The Road Plate Is Monolithic With A Thickness Of 16 Cm. The Transverse Beams Are 3 Pcs. In An Opening / Above The Supports And In The Middle Of The Opening/ With A Height Of 117 Cm And A Width Of 30 Cm In The Middle And 20 Cm Above The Supports. The Stationary Bearing Is A Lead Plate, And The Movable Bearing Is Tangential, Made Of Steel Plates. The Most Serious Damage To The Overpass Is On The Main Beams In The Middle Opening Of The Superstructure, Caused By Impacts From Oversized Road Vehicles. In The Middle Third Of The End Main Beams, As A Result Of The Impacts, The Following Damages Were Obtained: - Collapses, Cracks And Destruction Of The Concrete In The Lower Belt Of The Beams; - Collapses, Cracks And Destruction In The Lower Part Of The Stem Of An End Beam - Sofia Side; - Broken Stirrups In The Lower Girdle Of The Beams; - Heavily Deformed And/Or Broken Longitudinal Bars From The Lower Row Of The Lower Belt Of The Beam; - Broken Connection Between The Middle Cross Beam And The Main Beams. Middle Main Girder Damage - Collapsed Concrete Cover; - Broken Stirrups; - Deformed Bars From The Longitudinal Reinforcement; - Local Collapse Of

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