(86)16/WBMAD/SMC/APAS/PW/25-26

Construction of Sub Base using Local Materials:Construction of Sub Base using Local Materials,spreading in uniform layers with Motor grader on prepared surface, including screening the metal as necessary, mixing by mix in place method with Rotavator at OMC, and compacting with vibratory roller to achieve the desired density, lighting, guarding and barricading including cost and carriage of all materials and making necessary earthen bundh of one metre wide on each side to protect the edges completeas per Clause 401 of Specifications for Road & Bridge Works of MoRT&H (5th Revision).

For Construction of Sub Base by compacting river bed materials

Box cutting or filling in Road embankment in all sorts of soil including spreading the spoils properly over the flank as necessary or on berm to approximate grade & camber and rolling the sub-grade with power roller toproper camber and grade as per direction and satisfaction of Engineer-in-charge including uprooting and removing plants and jungles when and where necessary.

Depth up to 150 mm.

Water Bound Macadam Base Course, Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness,hand packing, rolling with vibratory roller 8-10 tonnesin stages to proper grade and camber, applying and brooming requisite type of screening / binding materials to fill up the interstices of coarse aggregate,watering including lighting, guarding, barricading and making necessary earthen bundh of one metre width on each side and preparing the bed by necessary cutting orfilling, including cost of all materials and hire and labour charges of all men and machinery and compacting to the required density, as per Clause 404of Specifications for Road & Bridge Works of MoRT&H(5th Revision).

Grading-I Aggregate (63 mm to 45 mm) Using Stone Screening Type A (13.2 mm)

Manual Means

Water Bound Macadam Base Course, Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness,hand packing, rolling with vibratory roller 8-10 tonnesin stages to proper grade and camber, applying and brooming requisite type of screening / binding materials to fill up the interstices of coarse aggregate,watering including lighting, guarding, barricading and making necessary earthen bundh of one metre width on each side and preparing the bed by necessary cutting orfilling, including cost of all materials and hire and labour charges of all men and machinery and compacting to the required density, as per Clause 404of Specifications for Road & Bridge Works of MoRT&H(5th Revision).

Grading-II Aggregate (53 mm to 22.4 mm) Using Stone Screening Type B (11.2 mm)

Manual Means

Tack Coat Providing and applying tack coat with Cationic Bitumen Emulsion of approved grade conforming to IS:8887-1978 on the prepared surface cleaned with Hydraulic broom, moistening the surface including cost and carriage of emulsion, hire charges of machinery and labour, cost of fuel and lubricants all complete asper Clause 503 of Specifications for Road & Bridge Works of MoRT&H (5th Revision).

On Granular surfaces treated with primer (Using Bitumen emulsion at the rate of 0.25 to0.30 kg per sqm.)

Bituminous Macadam using Mobile Hot Mix Plant (Light Duty)Providing and laying bituminous macadam with Mobile Hot Mix Plant (Light Duty) using approved crushed aggregates of specified grading as per Table 500.7premixed with bituminous binder, transported to sitelaid over a previously prepared surface at specified laying temperature by means of approved and suitable arrangements to the required grade, level and alignment and rolled with suitable power roller for break down, inter-mediate and finished rolling as per specification to achieve the desired compaction including cost and carriage of stone materials and bitumen, hire charges of machinery and equipment,cost of fuel and lubricants and wages of operational staff, quality control complete as per Specifications for Road & Bridge Works of MoRT&H (5th Revision).

For Grading II(19 mm nominal size, 50-75 mm thick.)

Mastic Asphalt Providing and laying Mastic asphalt wearing course with paving grade bitumen meeting the requirements given in table 500-29 using approved coarse aggregate,fine aggregate, filler material and bitumen, prepared by using Mastic cooker including cost and carriage ofall ingredients, cost of heating aggregates and binder,mixing in specified proportions conforming to approved Job Mix Formula and laid to required level and slopeafter cleaning the surface, compacting, sealing the construction joints and surface finishing conforming to specifications including providing antiskid surface with bitumen pre-coated fine-grained hard stone chipping of13.2 mm nominal size at the rate of 0.005 cum per 10sqm and at an approximate spacing of 10 cm center tocenter in both directions, pressed into surface when the temperature of surfaces not less than 100°C, protruding1 mm to 4 mm over mastic surface, including the hire charges of all tools and plants and machinery, pay of operators, cost of

25 mm thickness

Direction and Place Identification Signs with size more than 0.9 sqm size Board.Providing and erecting direction and place identification retro- reflectorised sign as per IRC :67 made of high intensity grade sheeting vide clause 801.3,fixed over aluminium sheeting, 2 mm thick with area exceeding 0.9 sqm supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm, 2 Nos. firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete 45 cm x 45 cm x 60 cm, 60cm below ground level as per approved drawing and Clause 801 of Specifications for Road & Bridge Works of MoRT&H (5th Revision)..