| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 23-Oct-2021 | Corrigendum for Special repairs to old RCC berthing jetty at Campbell Bay in Great Nicobar Islands | Technical Bid | 01-11-2021 |
| 2 | 01-Nov-2021 | Corrigendum for Special repairs to old RCC berthing jetty at Campbell Bay in Great Nicobar Islands | Date | 16-11-2021 |
| Sl. No. | Item Description |
| 1 | Special repairs to old RCC berthing jetty |
| 2 | Surface preparation to receive micro concrete by chipping to depth of max. 75mm,cleaning, removing the traces of dust, loose concrete etc., including cost of all labour charges, minor tools, labour cess, GST etc, complete. |
| 3 | Replacement of reinforcement as additional bars including bending, cutting, welding and fixing, including cost of steel, transportation charges, all labour charges, minior tools, labour cess, GST etc, complete. |
| 4 | Steel centering and shuttering including strutting propping etc. and removal of form for : Columns, Pillars, Pipes, Abutments, Posts and Struts, including cost of all materials, all labour charges, minor tools, labour cess, GST etc. complete. |
| 5 | Drilling holes in the existing structure with mechanized boring machine to an average dia of 100 mm at required location for pouring the micro concrete including cost of all labour charges and machineries, labour cess, GST etc.complete. |
| 6 | Supply and apply of high strength, non shrink cementitious free flow micro concrete (With minimum 28 days flexural strength 50Kg/ Sqcm and Compressive strength 500Kg/ Sqcm- As per BS 4551-80)) for above water level using12 mm down size graded stone chips with the ratio of 1:0.75 (1 high strength & non shrink cementitious micro concrete chemical : 0.75 12mm to 6mm stone chips) on site to enable completion of pouring in a continuous operation. An approved grout concrete mixer of slow speed heavy duty drill and exact quantity of water as recommended should be poured into the mixing vessel with cleaned stone chips of size 12 mm to 6 mm slowly and mix the same thoroughly ina forced action. The mixed material should be placed immediately to positioned form work continuously to an average thickness of 75 mm without any gap. Including cost of all materials, labour charges, minor tools, labour cess, GST etc., Complete. |
| 7 | Supply and application of Epoxy Concrete bonding agent (Confirming to and having BS 6319 certification ) and over cleaned and properly prepared old concrete surface to give good bonding between old and new concrete, including cost of materials, labour charges, minor tools, labour cess, GST etc., Complete. |
| 8 | Supplying, mixing and applying CURING MEMBRANE or equivalent with water including cost of materials, labour charges, minor tools, labour cess, GST etc., Complete. |
| 9 | Protective Coat : Supplying and applying two coats of IPH - Conguard or DECKGUARD "S" by spray or brush over the prepared surface and allow it to dry including cost of materials, labour, brushes, tools, equipments labour cess, GSTetc. complete. The polymer material properties are to be as follows:1. Water absorption test in (%) : 0.15 % |
| 10 | Lockset:Mark the holes at the required spot. Drill the pilot holes using 14mm dia hammer drill bit to a depth of 150mm. Clean the holes with the good water. Mix the base and hardener of Polyester resin LOKSET "S" pour the same to the 2/3 of the depth and insert the shear connecting rod of 12 mm dia gently in to the prepared holes. Pack the gap if any. Allow it to set for min. 20 minutes without disturbing including cost of all materials, all labour charges, labour cess, GST, etc. complete. |
| 11 | Providing and fixing the sacrificial anode (Fosroc Galvashield XP or equivalent) over the main reinforcement of pile, pile caps,columns, Deck Beams and Deck Slabs etc. as per the manufacturer specification and designed spacings, as sacrificial anode to the reinforcement against corrosion, Including cost ofallmaterials, machineries and labour charges, minor tools, labour cess, GST etc., Complete. |
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