Improvement and Construction of Anti Sea Erosion Bund due to Erosion of foundation of protection wall by sea waves at Raj Bhavan, Mumbai.

Amount

ITEM NO. 1 :- Excavation for foundation in earth, soil of all types, sand, gravel and soft murum including removing the excavated materials upto a distance of 50 metres beyond the building area and stacking and spreading as directed including dewatering, preparing the bed for the foundation and necessary backing filling, ramming, watering including shoring and strutting etc. complete

Item No.2:- Excavation for foundation in Hard Rock by chiselling, wedging, line drilling etc. including trimming and levelling the bed, removing the excavated material upto a distance of 50 metres beyond the building area and stacking as directed dewatering and back filling with available earth/ murum watering, ramming etc. complete in tidal condition

ITEM NO. 3 :- Supplying and spreading geofabric filter layer of Geotextile of Polypropylene multifilament woven to the line ,level and grade with pore size less than 0.075mm and permeability greater than 9.0 litre/sqm/ second confirming specification conveying to the site, joining and stitching with proper overlap and laying at excavated surface in tidal condition as directed by Engineer in Charge etc complete

ITEM NO. 4 :- Providing and laying filter layer of polythene bags, filled with a/b/c including conveying and placing in proper line, level as per drawing in tidal condition as directed by Engineer-incharge

Item No. 5 :- Providing and laying trap stone rubble weighting 20 to 100 Kg. for Core layer including conveying with all leads and lifts and placing at required places in required line, level, slope and section as directed etc. completed under tidal conditions.

Item No. 6 :- Providing and laying trap stone rubble weighting 100 to 200 Kg. for Sub Armour layer including conveying with all leads and lifts and placing at required places in required line, level, slope and dection as directed etc. completed under tidal conditions.)

Item No. 7 :- Supplying and laying trap stone weighing 500 kilogram to 1000 kilogram for armour layer and Toe Berm including quarrying, conveying with all the leads, lifts, laying in required line, level, slope including necessary equipment’s and machinery such as poclain /crane of adequate capacity and boom length with all lead and lifts etc. complete in tidal conditions.

Item No.8 :- Providing and laying tetrapods of plain cement concrete of (M-30) grade, weighting 2000 kg. each of required shape for Armour layer including necessary steel formwork/mould including applying form releasing agent including vibration, curing conveying and placing them in correct profile as per drawing including all labours, materials, equipments, machinery such as crane, with all lift and lead etc. complete in tidal conditions.

ITEM NO. 9 :- Providing and laying in situ M-25 grade cement concrete of trap/granite/ quartzite/gneiess metal with 15% plum of trap stones for retaining walls and jetty etc including necessary formwork, compacting,curing, bailimng out water manually in tidal range etc.complete.

Item No.10 :-Providing and fixing 25mm diameter steel anchor dowel in hard rock including crilling hole of 32 mm diameter up to 0.75 mtrs. Depth, placing the dowel in position and effectively grouting the hole with CM1:1 proportion etc. complete. As directed by Engineer in charge

Item No. 11 :-Providing and laying trap stone rubble stone soling 15 cm to 20 cm thick including hand packing and compacting for the foundation including conveying with all the leads & lifts and laying at required places as directed etc complete under tidal conditions

Item No. 12 : - Providing and laying in situ M:20 plain cement concrete of trap metal for foundation and bedding including bailing out water manually, formwork, compacting and curing . Etc complete in tidal condition

Item No. 13 : - Providing and laying in situ plain cement concrete M-30 grade unreinforced plain cement concrete pavement over a prepared sub base with 43 grade cement, coarse and fine aggregate (natural sand /VSI grade finely washed crushed sand) conforming to IS 383, using fine and coarse aggregates combined gradation as per Table 600-3 of MORTH Specification 2013, mixed in a bacthing and mixing plant/ non tilting mixer and weight batcher as per approved mix design, admixture, transporting to site, spreading ,laying with approved make paver, compacted and finished in a continuous operation , finishing to lines and grades as directed by Engineer in charge and curing etc. complete in tidal condition.

Item No.14 :- Providing weep holes of 100 mm diameter of PVC as per drawing for abutment returns, return walls etc. complete.

Item No. 15 :- Providing and fixing mat finish stainless steel (of 302 grade) railing with top pipe of 50 mm dia. And vertical pipe of 38 mm dia at 0.60 m c/c or as required and horizontal pipes of 25 mm dia in three rows, all pipes of 2 mm thick including buffing, fabricating fixtures and fastening including pipe base of appropriate diameter and ball base of 75 mm dia above newel post 75 mm diameter etc. complete (Prior approval of sample and brand by Ex.Engineer is necessary before use)

Item No. 16:- Providing and laying concrete pipes of I.S.NP. Class of 300 mm diameter in proper line, level and slope including necessary collars, excavation, laying, fixing with collars in cement mortar 1:1 and refilling the trench complete.

Item No.17 :-Royalty charges for Materials as Rubble, Trap stone, Metal etc.

Item No.18 :- Carring out various test for quality control as per frequency chart of different materials.

A) Design Mix(2 +2=4)

B) Cube Test(200 +36=236)

C) Rubble(15+2+16=33)

M/s. R B Chavan