Civil Projects

SENIOR PROJECT MANAGER Responsible for Attending Management Review Meetings and progress review meetings. Responsible for timely valuation of work and submission of the invoice to the client. Attending meeting with Client / Engineer and inform the matters discussed to the Director and site staff for the necessary action. Organizing and reviewing 5-S program at site. Taking responsibility for reviewing supplier /Sub-contractor performance and reporting at Management meetings. Reviewing and approving work plans prepared by Construction Manager. Monitoring the standards of workmanship of employees & Providing Work Instruction to the staff including skilled and unskilled workers. Collecting and forwarding data relating training needs of the staff members for management review meetings when necessary. Initiating Training of Personnel and establishing and maintaining records of training given to the employees of all categories. Fixing re

Materials The major materials used for slurry sealing work, but are not limited to the following. Aggregate Filler ( Portland cement ) Emulsion ( CSS 1) Water Equipment The major equipment used for the slurry sealing, but are not limited to the following. Plate Compactors Tractor & Trailer Other minor tools Man power Man power used for the access construction, but are not limited to the following. Technical Officer Skilled Labours Unskilled Labours Safety Management and Control Safety precaution will be taken complying with the Road Work Traffic Control Manual. Every precautions will be taken avoid any damages to adjoining properties.   Method and Procedures Following procedure will be used to slurry sealing on the embankment. See flow chart at Appendix A. All loose material, mud spots, vegetation and other objectionable material will be removed immediately prior to applying the slurry. After the preparation of existing surface, a tack

Preparation of Surface The layer to be primed shall be cleaned of all loose and deleterious material by means of a rotary broom and/or hand brooms or other approved means. The brushing force shall be sufficient to dislodge all adhering material without damaging the pavement surface. Scale, clay and other foreign material shall be removed by hand where instructed. The exposed surface shall be kept moist up to the time of spraying. If the moisture content is too high to permit full penetration of the prime coat in the opinion of the Engineer the Contractor shall delay prime coat application until the moisture content is satisfactory for full penetration as instructed by the Engineer. The surface shall be prepared in this manner to expose a hard tight mosaic of large aggregate in the base course. Hardened impervious films or layers of compacted fine material over the larger aggregate shall be removed by approved by the Engineer. Preparation of road surface for paving with asphalt

Aggregate Base Coarse Materials Aggregate Base Course. (0-40mm) Water Equipment The major equipment used for the laying of ABC works and compaction, but are not limited to the following. JCB, and/or Backhoes Bob Cat Dump Trucks Rollers Motor Grader Rammers / Plate Compactors Water Bowser Sampling & Testing Equipment Auto Level, Straight Edge & Wedge Other minor tools Man Power Man Power used for the Aggregate Base course works includes, but are not limited to the following. Site Engineer Technical Officers Supervisors Labours Safety & Traffic controllers Safety Management and Traffic Control All workers will be advised to wear helmets, boots, and gloves while working. There will be a stand by vehicle near site always if needed in a case of accident. The safety officer inspects several times to inspect safety matters. Method

  This test was done by using a Cube crushed machine named ELE Compact 1500 machine designed for measure compressive strength of materials. Maximum applied load was 2000kN. Samples were taken from the concrete mixture which was used for the construction by making cubes (150mm×150mm×150mm), normally six cubes were made from one sample and it was compacted by using a hammer having 1.8Kg weight when it was making. Three Cubes were tested for strength after 7 days and others in 28 days from particular construction date. For that test a cube was put on the machine which consist a hydraulic jack and then oil valve was closed to take the pressure on jack. After placing the cube, the top screw has to be tightened to touch the upper plate on the specimen. Then adjust the manual display for the test and start the machine for compressed the specimen. When the loading was applying cracks were visible in the cube. When that specimen has reached its maximum load it displayed on the display. The

  After taken samples from the asphalt plant, this test was used to find out the bitumen content of the asphalt concrete, to make sure the correct content of bitumen has been used in the actual mix. PROCEDURE OF BITUMENN EXTRUCTION TEST Sample was selected from dump truck which is in the site and then it was put in to the oven. Sample size was depended on maximum aggregate size of the mixture and capacity of the Extraction equipment. About 1250g sample was collected as capacity of the bitumen extraction equipment. That was put into the bowl of the machine and some petrol also added.(About 5l of petrol had to use for complete extraction) Then the bowl was covered by using a special filter paper, which was oven dried nearly 140 0 C and had weighted (12.7g) and the system was closed by steel cover and tied. After some time, the machine was “on” (it is rotating while discharging bitumen mixed with petrol) and the discharge of petrol and bitumen mixture was collected from the out

  The flakiness index of aggregates is determined by the percentage of flaky particles contained in it. For base course, and construction of asphalt and cement concrete types the presence of flaky particles is considered undesirable as it may cause inherent weakness with possibilities of braking down under heavy loads. Therefore, in pavement construction the flaky particles are to avoid particularly is surface course. Thickness gauge The test apparatus consists of a standard thickness gauge (6.30 – 63.0 mm) is used for this test. The flakiness index test (FI) is not applicable passing 6.30 mm or retaining 63.0 mm test sieve. Testing procedure The dried aggregates sample is allowed to passing and retained on a set of sieve. The weight of retained aggregate on each sieve is measured and determined the percentage of retained. Each of the particles fractions of aggregate is tried to passing through the slot of the thickness gauge. The weight of aggregates passing on e

  The sand cone method is used for field density test in our highway construction. In the field, the dry density test is carried out for check the compaction of layers. Compaction is most useful for the preparation of sub base grade and other pavement layers and in construction of embankment in order to increase the stability and to decrease settlement. In field compaction, the compacting moisture content is first controlled at optimum moisture content and the adequacy of rolling or compaction is controlled by checking the dry density achieved and comparing with the maximum dry density. Base layer-98% Sub base layer-98% Type 1 layer-95% ABC layer-100% Road shoulder- 98% Field density test Testing procedure: The weight of empty sand cone is measured and then filled with dry sand and weighted. The soil excavated from the hole is collected and weighted. After weighting, a specimen of soil is taken to determine it water content. The sand cone is placed on the

  Plastic limit is defined as the minimum moisture content at which the soil remains in a plastic state. Plasticity index (PI) is defined as the numerical difference between the liquid limit and plastic limit. Plastic index thus indicates the range of moisture content over which the soil is in a plastic condition. Plastic limit is the moisture content at which a soil when rolled in to thread of smallest diameter possible starts crumbling and has a diameter of 3 mm. Testing procedure The dry soil that passing 0.425 mm test sieve is mixed with distilled water until it becomes sufficiently plastic to be mould into a ball. Part of the soil sample is formed into a thread, about 6 mm in diameter between the first finger and thumb of each hand. The thread is then rolled on a glass plate until its diameter is reduced to about 3 mm. The thread is then folded and rolled repeatedly until the 3 mm thread begins to crumble. All threads are collected into the container and placed on

  Liquid limit is defined as minimum water content at which the soil flow under the application of a very small shearing force. The LL is usually determined in the laboratory using a mechanical device. Liquid limit is moisture content at which 25 blows in standard liquid limit apparatus will just close a groove of standardized dimensions cut in the sample by the grooving tool by specified amount. Liquid limit tests Testing procedure The dry soil sample that passing 0.425 mm test sieve is mixed with distilled water to a thick paste. Some of the soil paste is placed in the cup, leveled off horizontally and divided by cutting a groove. The two halves of the soil gradually flow together as the cup is raised and repeatedly dropped on to the base at the rate of 2 drops per second. The number of blows required to close the bottom of the groove is calculated. This test is repeated after adding more water. All test samples are collected and placed on the ov

Soil compaction is a mechanical process by which the soil particles are constrained to be packed more closely together by reducing the air voids. Soil compaction causes decreases in air voids and consequently an increase in dry density. This may result in increase in shearing strength. Increase the dry density of a soil due to compaction. Compaction depends on following three factors The nature of soil The compacting moisture content The amount of compaction or compactive effort At the laboratory, the dynamic compaction test call proctor compactions test is tested for determining the moisture-density relationship of soils. This relationship indicates that under a given compaction effort every soil has optimum moisture content at which the soil attains maximum dry density. Through the compaction test, the maximum dry density (MDD) and optimum moisture content (OMC) of the soil found for the selected type and amount of compaction. The OMC of the soil

Materials The major materials used for slurry sealing work, but are not limited to the following. Aggregate Filler ( Portland cement ) Emulsion ( CSS 1) Water   Equipment The major equipment used for the slurry sealing, but are not limited to the following. Plate Compactors Tractor & Trailer Other minor tools Man power Man power used for the access construction, but are not limited to the following. Technical Officer Skilled Labours Unskilled Labours Safety Management and Control Safety precaution will be taken complying with the Road Work Traffic Control Manual. Every precautions will be taken avoid any damages to adjoining properties.   Method and Procedures All loose material, mud spots, vegetation and other objectionable material will be removed immediately prior to applying the slurry. After the preparation of existing surface, a tack coat of diluted emulsion using CSS-1 with water in the ratio of 1:3 will a

  Materials The major materials used for tack coat & asphalt work, but are not limited to the following. Asphalt Concrete (Binder Course ) CRS 1 Equipment The major equipment used for tack coat & asphalt work, but are not limited to the following. Asphalt Pavers – 5.5 m width Pneumatic Tyred Rollers – 10 Tone Tandem Roller – 8 Tone 2.5 T roller Plate Compactor Tractor & Trailer Asphalt Cutter & Breaker Tractor with Broom – 2 m Wide Dump Trucks – 3.5 Cube Sampling & Testing Equipment Sprit Level Compressor – 125 cfm Tack coat sprayer Straight Edges Water bowser Other minor tools Man Power Man power used for tack coat & asphalt work, but are not limited to the following. Civil Forman (Asphalt) Safety Officer

Introduction Road surface marking is any kind of device or material that is used on a road surface in order to convey official information. They can also be applied in other facilities used by vehicles to mark parking spaces or designate areas for other uses. Materials 1.Thermoplastic road marking materials 2.Glass beads   Equipment 1.Road Marking Machine 2.Gas 3.Rope 4.Chisel. 5.Cleaning equipment 6.Small Tools   Method 1.Center line will be set out and get approvals about the Center line before commencement of line marking. 2. Road surface shall be cleaned manually using wire brush and wash the surface where necessary. 3. As per the approved road marking design the road marking lines & symbols will be set out means of white chalk and approval will taken by Engineer. 4. The thermoplastic material is heated in the range of temperature around 170 ~ 200 0C and maintain in the range during the entire laying process.   5. After getting th

Method of Plastering Internal plastering on surfaces of brick and concrete. External wall plastering. Soffit plastering / Soffit finishing with cement based easy plaster material and wall putty. Improving joint of brick walls & structural concrete joints. Internal Plastering on surfaces of Brick and Concrete Surface where plastering is to be done will be cleaned. Level pegs on walls will be fixed with reference to the off lines to brick walls set out in floors. (Using centre plumb bob and nylon thread). All the brick walls will be watered before pasting mortar on walls. First coat mortar filling (1:4 Cement and Sand) up to 15 mm will be applied on surfaces where required mortar thickness exceed 25mm. Walls and columns will be plastered 1:4 Cement and Sand to achieve semi rough finished surface. Vertical joint of structural columns / walls & brick walls will be treated by fixing 200mm width chicken mesh with wire na