EQUIPMENT CAPABILITES

EQUIPMENT CAPABILITES Type of equipment 1. Bulldozer (D8)

Average Capabilities a.) Clearing b.) Stripping c.) Excavation 1.) Common Soil 2.) Slightly hard Materials d.) Quarrying 107 Common Materials 108 Aggregates Boulders 200 Needs Screening e.) Pushing

500 sq.m./hr. 200 sq.m./hr 45 cu.m/hr. 25 cu.m./hr. 50 cu.m./hr. 40 cu.m./hr. 15 cu.m./hr. 3 cu.m./hr.

2. Road Grader

a.) Sub grading b.) Spreading

3. Payloader

Loading

30 cu.m./hr.

4. Crane Shovel 5. Sheep Foot Roller

Loading a.) Static Rolling (12 passes – 15 cm. lift) b.) Vibratory Rolling (6 passes – 20 cm. lift) a.) Static Rolling (6 passes – 20 cm. lift) a.) Vibratory Rolling (6 passes – 20 cm. lift) a.) Static Rolling (6 passes – 20 cm. lift) b.) Vibratory Rolling (6 passes – 60 cm. lift) a.) Hauling Common Borrow Base Course b.) Hauling Selected Borrow c.) Hauling Concrete Batch ‘Class A’ a.) Hauling Common Borrow Base Course b.) Hauling Selected Borrow Base Concrete Batch ‘ Class A ‘ a.) Hauling Concrete Mix

35 cu.m./hr. 15 cu.m./hr.

6. 3 – Wheel Road Roller 7. Tractor Drawn Roller 8. Tandem Roller

9.) 6 – T Dump Truck

10. 2 ½ T – Dump Truck

11. Buggy

300 cu.m./hr. 50 cu.m./hr.

135 cu.m./hr. 24 cu.m./hr. 24 cu.m./hr. 24 cu.m./hr. 72 cu.m./hr. 3.5 cu.m./hr. 5.0 cu.m./hr. 2 Batch/trip 2.5 cu.m./trip 4.0 cu.m./trip 1.0 Batch/trip 0.17 cu.m./trip

12. Wheel Borrow 13. 14. 15. 16. 17. 18.

Water Truck Concrete Mixer Rock Crusher Concrete Vibrator Concrete Floor Finisher Percussion Drilling

a.) Hauling Aggregates 0.17 cu.m./trip b.) Hauling Concrete Mix 0.05 cu.m./trip a.) Watering 1000 sq.m./trip a.) Mixing Concrete 9 cu.m./hr. a.) Crushing Mix sand & Gravel 30 cu.m./hr. a.) Vibrating Concrete Mix 40 cu.m./hr. a.) Finishing Concrete Floor 140 cu.m./hr. a.) Drilling Hard Rock 0.23 m./hr. b.) Drilling Loose Rock 0.30 m./hr. c.) Drilling Lime Stone 0.38 m./hr. d.) Drilling Sticky Clay 0.49 m./hr. e.) Drilling Loose Clay 0.70 m./hr.

TASK RATES FOR LABOR-BASED PROJECTS I. For Item 100 – Clearing and Grubbing Activity: Productivity 1.) Bush Clearing sq.m./man-day Bush Type a.) Light Bush 200 b.) Medium Bush 100 c.) Dense Bush 50 2.) Tree and Stump Removal One (1) man-day per cm. of trunk diameter at Base of tree 3.) Grubbing Vegetation Type a.) Dense vegetation in firm soil covering 80 the whole area b.) Spaced vegetation in loose soil 250 II. For Item 105 – Excavation for Roadway & Drainage Activity Productivity 1.) Excavation Cu.m./man-day (throwing distance in m.) Soil Type 0 – 4 m. 4 – 6 m. 6 – 8 m. a.) Loose, rot sticky soil 5.0 - 6.0 4.5 – 5.5 3.5 – 4.5 b.) Firm Soil 3.5 – 4.5 3.4 – 4.0 2.5 – 3.5 c.) Very hared soil, hard soil mixed 2.0 – 3.0 1.8 – 2.5 1.7 – 2.5 with stones 2.) Loading Cu.m./man-day Type of Soil a.) Loose 4.5 – 5.5 b.) Firm 2.5 – 4.0 c.) Hard 1.5 – 2.5 Excavation combined with loading of soil can be effectively carried out by laborers up to a loading height of about 1.00 e.g. into wheel borrow or head baskets.

Above that height, it is preferable to have a separate group of leaders whose output must be matched with that of the excavators. Soil Type a.) Loose b.) Loose c.) Loose

Necessary output for the Loading Activity Loading Height Productivity cu.m./man-day 0.1 m. 12 – 15 1 – 2 m. 7 – 10 Over 2 m. 4–5

III. For Item 106 – Excavation for Structures Activity Productivity 1.) Excavation Depending on the type of soil There use similar productivity Data as those used for Excavation In Item 105 IV. For Item 110 – Foundation Fill Activity 1.) Backfilling and Tamping

Productivity 3 cu.m./man-day

V. For Item 108 – Aggregate Sub – Base Course Activity Productivity 1.) Quarrying (Excavation & Gravel) 0.50 – 2.0 cu.m./man-day 2.) Loading 7 – 10 cu.m./man-day 3.) Spreading 8 – 12 cu.m./man-day 4.) Compacting 8 – 12 cu.m./man-day 5.) Hauling activity should be considered in this item, hence, hauling distance has an important bearing on the cost of the gravelling operation, the maximum acceptable. Hauling distance has to be considered from case to case. VI For Item 200 - Aggregate Base Course Activity Productivity 1.) Quarrying 0.50 – 2.0 cu.m./man-day 2.) Loading 7 – 10 cu.m./man-day 3.) Spreading 8 – 12 cu.m./man-day 4.) Compacting 8 – 12 cu.m./man-day 5.) Hauling – please refer to activity no. 5 of Item 108 6.) Screeping 3–5 VII. For Item 413 – Reinforced Concrete Pipe Culvert Activity Productivity 1.) Crushing of stone for aggregate 0.20 cu.m./man-day 2.) Casting of culvert rings 2 man-days/ring 3.) Laying of standard culvert (24 in. diameter) Refer culvert laying data below Or 0.60 m. dia., length 6.00 m.,

Excavation, culvert bad and Backfill 4.) Building of headwalls with masonry blocks 10 man-days/2 head walls If the length of the culvert exceeds 6 meters, the number of man-days has to be increased accordingly. Culvert laying – this task consist of the excavation of the trench preparing the bed, laying o culvert, backfilling and compaction. Number of man-days required varies with the volume of the excavation and the soil type. FACTORS TO BE MULTIPLIED TO DETERMINE THE REQUIRED QUANTITY OF EACH MATERIAL CONCRETE (BASED) on the 88 pounds (lbs.) bag of cement CLASS “A” CONCRETE (3000 psi) Cement – 9.08 Bags/cu.m. of concrete + 3 - 5 % wastage Sand – 0.58 cu.m./cu.m. of concrete + 8 – 10% wastage Gravel – 0.77 cu.m./cu.m. of concrete + 8 – 10 % wastage CLASS “B” CONCRETE (2500 psi) Cement – 8.38 bgs/cu.m. of concrete + 3 – 5% wastage Sand – 0.45 cu.m./cu.m. of concrete + 8 – 10% wastage Gravel – 0.82 cu.m./cu.m. of concrete + 8 – 10% wastage CLASS “C” CONCRETE (3500 psi) Cement – 9.77 bags/cu.m. of concrete + 3 – 5% wastage Sand – 0.53 cu.m./cu.m. of concrete + 8 – 10% wastage Gravel – 0.70 cu.m./cu.m. of concrete + 8 -10% wastage CLASS “D” CONCRETE (4000 psi) Cement – 11.17 bags/cu.m. of concrete + 3 – 5% wastage Sand – 0.44 cu.m./cu.m. of concrete + 8 – 10% wastage Gravel – 0.68 cu.m./cu.m. of concrete + 8 – 10% wastage FOR BRIDGE ESTIMATE Lumber for false work - 60 bd.foot/cu.m. of concrete Nails - 2 kilos/cu.m. of concrete Tie wires - 1.1 kilos/cu.m. of concrete Painting structural steel - 3 galloons per ton

AVERAGE FUEL CONSUMPTION PERDAY FUEL ENGINE GEAR OIL#10 OIL OIL Crane, 140 liters(diesel) 4 liters 1 liter Diesel Hammer, 20 liters Bulldozer, 200 liters (Diesel) 3 liters 1 liter Payloader, 100 liters (Diesel) 3 liters 1 liter Grader, 120 liters (Diesel) 3 liters 1 liter Roller, 60 liters (Diesel) 2 liters 1 liter/wk. Dump Truck, 60 liters (Diesel) 1 liter 2liters/wk. Mixer (1-bagger), 40 liters (gas.) Vibrator, 15 liters (gasoline) One Bagger Mixer – 100 bags/day Crane – minimum of 2 piles/day (16 m. length including spotting)

GREASE 2 lbs. 1 lb. 1 lb. 1 lb. 2 lbs./wk. 1 lb. 0.5 lb. -

– 1 liter 1 liter 1 liter 1 liter 1 liter 1 liter – -

VOLUME OF TRENCH CU.M. Soil Type

7

7–8

10 -13

In these cases, the work split over two or more days. First the trench should be excavated and then the preparation of the bed, the laying, backfilling and compaction is done. Therefore the volume of the excavation to be limited following rates and then applicable: Soil Type Productivity a.) Hard Soil 3.50 cu.m./man-day b.) Very hard, stony 2.00 cu.m./man-day After completion of the trench approximately 4 man – days are needed to lay 6 rings, backfill and compact to finish road level. I. MECHANIZED ASPECT A. CLEARING AND GRUBBING Dozer Production Horse Power Dense of Vegetation (No. of Trees/Hectare) 0 – 50 51 – 100 101 – 200 201 – 250 250 above 120 360 250 190 160 130 140 420 290 220 185 150 160 480 330 255 210 170 180 540 375 285 240 195 200 600 420 310 265 215

K.

B. EXCAVATION (Common Materials) B.1 Crane Tonnage Capacity (cu.m./hr.) Bank Volume Canal Structure Creek 15 15 10 10 20 20 15 15 25 25 20 20 30 30 25 25 B.2 Dozer Dozer Production (cu.m./hr.) Bank Volume Horse Power Canal Structure 120 30 15 140 35 20 160 40 25 180 45 30 200 50 35 B.3 Backhoe Bucket (cu.m.) Production (cu.m./hr.) Bank Volume Canal Structure Creek 0.50 20 15 15 0.75 30 20 20 1.00 40 30 30 1.25 50 40 40 1.50 60 45 45 C. QUARRYING Dozer Production (cu.m./hr.) Bank Volume Horse Power Common Aggregate Cobbles/Boulders 140 55 60 27 160 60 65 29 180 65 70 31 200 70 75 33 J. AVERAGE SPEED OF DUMP TRUCK Type of Road Kilometer per hour With Load Without Load Concrete/Asphalt Road 35 45 Good Maintained Gravel Road 30 35 Poorly Maintained Gravel Road 20 25 DEMOLITION OF CONCRETE 160 CFN Compressor & two (2) Jack Hammer Capacity – 8.00 cu.m./day for massive concrete 12.00 cu.m./day for slab & wall L. DRIVING OF PILES Steel Pipes: Crane 25 tons with 2 – tons drop hammer, Capacity = 8 L.M./Hr. Concrete Piles: Crane 25 tons with 2500 kgs. Pile Hammer, Capacity = 2.00 L.M. L.M. per hour, 4.00 L.M.per hour, for thick and thin concrete

piles MANUAL ASPECT A. Excavation: A.1 Common Materials Capacity (cu.m./day)Bank Volume & Depth of Excavation Type of Work (meter) Farm Ditchs 3.00 2.50 2.00 Canal 2.50 2.00 1.75 Structure 2.00 1.75 1.50 A.2 Slight Hard Materials (Ind.) Type of Work Capacity (cu.m./man-day) Bank Volume Canal 1.00 Structure 0.75 B. LOADING CAPABILITIES OF FIVE (5) LABORERS Sand & Common Cobbles Boulders Cement R.S. Bars Lumber Gravel Cu.m./hr cu.m./hr. cu.m./hr. cu.m./hr. bags/hr kgs/hr. bd.ft./hr. 4 5 3.5 3 3 6,000 4,000 C. UNLOADING CAPABILITIES OF FIVE (5) LABORERS Sand & Common Cobbles Boulders Cement R.S. Bars Lumber Gravel Cu.m./hr cu.m./hr. cu.m./hr. cu.m./hr. bags/hr kgs/hr. bd.ft./hr. 6 6 5 4 300 7,000 4,000 D. CUT, BEND & PLACE RSB Structure 1 Steelman & 1 Helper with bar cutter Canal & others 80 kgs./day E. QUARRYING Capability Sand & Gravel 3.50

cu.m./man-day Cobbles Boulders 2.50 2.00

F. DEMOLITION OF CONCRETE Slab and Wall Massive Concrete

0.50 cu.m./man-day 0.20 cu.m./man-day

G. SCREENING OF AGGREGATES Gravel 4.00 cu.m./man-day Sand 6.00 cu.m./man-day

Plywood pcs./hr. 2.5 Plywood pcs./hr. 2.5

H. MANUAL BACKFILL Capacity : 3.00 cu.m./man-day I. LAYING OF MATERIALS (cu.m./man-day) Cobbles 2.00 Boulders 1.50 J. SPREADING OF AGGREGATE Capacity - 2.50 cu.m./man-day K. RUBBLE MASONRY (Concreting) Crew: 1 – Foreman, 2 – Mason, 10 – Laborers, 1 – Light Equip. Oper. Capacity: 6.00 cu.m./day L. GROUTED RIPRAP Crew: 1 – Foreman, 2 – Mason, 10 – Laborers, 1 – Light Equip. Oper. Capacity: 7.50 cu.m./day M. CONCRETE HALLOW BLOCK: Setting Capacity sq.m./day Crew: 1 – Mason, 2 - Laborers Fence Building 4” CHB 14 10 6” CHB 10 8 N. CONCRETE LINING Crew: 1 – Foreman, 2 – Mason, 1 – Light Equipt. Oper. 10 – Laborers with one bagger mixer Capacity: 4.50 cu.m./day O. INSTALLATION OF STEEL GATES Crew: 1 – Mason & 5 – Laborers 16 X 16 to 24 X 24 Above 24 X 24

2 assy/day 1 assy/day

P. CONCRETE WORKS P.1 Fabrication, Placing & Dismantling of Forms Crew: 2 – Carpenters, 4 – Laborers, Capacity: 3.50 cu.m./day for 3000psi Crew: 1 – Carpenter, 1 – Laborer, Capacity: 4.50 cu.m./day canal lining P.2 Concreting and Curing Capability P.2.a. With concrete mixer Crew: 1 – Foreman, 2 – mason, 1 – L.E. Operator, 8 – Laborers Class “A” : 3.50 cu.m./day Class “B” : 3.70 cu.m./day Class “C” : 3.50 cu.m./day Lean Concrete : 4.50 cu.m./day

Q. PLASTERING OF CHB WALL Crew: 2 – Masons, 2 – Laborers Capability: 12 sq.m./day (One side only) R. REINFORCED CONCRETE PIPES Crew Diameter Inch Cm. 1 – Foreman 12 30 1 – Mason 18 46 1 – Carpenter/Steelman 24 61 12 – Laborers with 30 76 1 – Bagger Mixer 36 91 48 122 42

Capability Fabrication 15 11 9 6 5 3 4

Installation 16 11 12 10 8 6 7

NOTE: TIME OF MIXING = BAGS OF CEMENT/DAY X 10 MIN./BAG 60 MINUTES/HOUR III. MATERIAL ASPECT Class Strength Max. Aggre. Cement Size, inch. Bags/cu.m A. Concrete a. 211 kgs. 1.50 9.00 b. 200 kgs. 2.00 7.00 Canal Lining 200 kgs 1.00 7.50 B. Rubble Masonry w/ 211 kgs. 4.50 C. Grouted Riprap 4.20 Plain Riprap D. Lean Concrete 5.00 1000 psi E. Gravel Blanket F. Filter Drain OTHER MATERIALS Class Type of Strength Structure Kgs. A Bridge/Flume 211 A Siphon/Box Cul 211 A Other Struc.@inc 211 A 211 B 200 A 211

Sand

Gravel Boulder cu.m./cu.m.

0.45 0.50

0.90 1.00

-

0.48

0.96

-

0.225 0.45 0.35 0.05 0.10 0.50 1.00 -

1.00 -

F. Lumber 1/2”Plywd. bd.ft./cu.m. pcs./cu.m. 40 1.00 25 1.25 25 1.25 5 0.10 5 15 0.40

0.75 1.00 1.00 Tie Wire Nails kgs/cu.m kgs/cu.m 1.25%RSB 2.50 1.20%RSB 2.00 1.10%RSB 2.00 0.50 0.25 1.00%RSB 1.50

B A

200 211

5 5

0.10 -

1.00%RSB 0.50 0.25

REINFORCE CONCRETE PIPES Diameter Fabrication Materials per piece Cement Sand Gravel G.I. F. Lumber Tie Wire CW Nails Sheet Inches Bag Cu.m. Cu.m. Pc. Bd.ft. Kgs. Kgs. 12 0.58 0.02 0.05 0.12 0.34 9.28 0.10 18 1.22 0.05 0.10 0.19 0.36 7.72 0.20 24 1.82 0.08 0.15 0.24 0.48 9.75 0.30 30 2.56 0.11 0.21 0.30 0.60 23.22 0.40 36 3.33 0.14 0.28 0.34 0.72 50.43 0.50 42 4.26 0.18 0.36 0.40 0.84 60.84 0.60 INSTALLATION OF R.C. PIPES Diameter Cement Sand Gravel R.S.B. Inches Bag Cu.m. Cu.m. Kgs. 12 0.21 0.01 0.02 18 0.45 0.02 0.04 3.65 24 0.72 0.03 0.06 4.52 30 0.93 0.04 0.08 5.26 36 1.11 0.05 0.10 6.01 42 1.32 0.06 0.12 6.79 PLASTERING C.H.B. BLOCK Size 4” X 6” G.I. LAYING OF C.H.B. Size 4” 6”

F. Lumber Tie Wire CW Nails Bd.ft. Kgs. Kgs. 2.00 0.20 0.20 2.00 0.20 0.20 3.00 0.30 0.30 3.00 0.30 0.30 4.00 0.40 0.40 4.00 0.40 0.40

Materials per sq.m. for two (2) sides Sand Cement 0.034 0.41 Cement Bags/sq.m. 0.55 1.07

Sand Cu.m./sq.m. 0.046 0.089

ACEL RATE 1998 Operated Equipment Bulldozer Payloader Road Grader Dump Truck Road Roller Crane Backhoe Transit Mixer Air Compressor Plate Compactor Asphalt Paver Asphalt Distributor Bare Equipment Pile Hammer (w/o crane) Drop Hammer (w/o crane) Jack Hammer Welding Machine Concrete Mixer Concrete Vibrator Chainsaw Water Truck Water Pump Concrete Batch Plant

Description Rate per Day (PhP) Komatsu, D80A-12DD 180Hp 9,160.00 75 TCM,Clark, 1.53 cu.m. 10,010.00 Capacity, 151 Hp Mitsubishi MG 500 170 Hp 8,808.00 Japan & other Make, 9,016.00 10 cu.m. Capacity Ingersoll Rand SP48 MI Tons 8,701.00 All models, Truck mounted, 11,296.00 Standard mechanically operated 31 – 35 Tons Komatsu PC 120, Capacity 90 Hp 9,656.00 Japan Make 3.8 cu.m., 46 cu.m 8,528.00 Capacity 175 Hp Gas/Diesel Engine, CFM 20 Hp 1,376.00 12 Hp Engine Driven 1,648.00 Worthington 34 (Basic Equipment Only) 3,320.00 Little Ford Sprasmaster 5,784.00 Description Rate per Day (PhP) Domag D8 – 22 5,067.00 Two Tons w/ Pile Hammer 100.00 Stanley, hydraulic w/o power unit 294.00 Gas/Diesel Driven 250 Amps., 185 Hp 300.00 1 – Bagger 298.00 Gas/Diesel Driven 341.00 Husquama, 2100 CD w/o Blade 180.00 All makes, 500 - 1000 gals. 1,773.00 All models 3.5” – 4” size 119.00 With Cement Silo Manual 5,113.00 /mo. X rated cap. In Cu.m./hour

LABOR OUTPUT CAPABILITIES REMOVAL EXISTING STRUCTURE: Lumpsum: Installations: Timber: Girts and Girder Floor Joist Flooring Boards Post

0.10 – 0.15 cu.m./man-day 150 L.M man-days 15 – 18 sq.m./man-days 0.14 cu.m./man-days

Walling/Sliding: Covering 30 sq.m./man-days Framing, Studs 12 cu.m./man-days (Multiply by the no. of days Double Walling) Ceiling Joist and Hangers 16 sq.m./man-days Ceiling Boards (4’X8’ Plywood) 30 sq.m./man-days Window sashes: Jamb Fabrication 4 sq.m./man-days Frames Fabrication 2 sq.m./man-days Jambs Installation 14 sq.m./man-days Frames Installation 10 sq.m./man-days Doors: Jambs Fabrication/Installation 2.5 sq.m./man-days Door Fabrication/Installation 1 panel/man-days Paintings: Paint Rollers 125 sq.m./man-days Paint Brush 50 sq.m./man-days Neutralizer 100 sq.m./man-days Truss Fabrication: 0.25 truss/man-days Purlins Installation 125 sq.m./man-days Fascia Board 0.05 cu.m./man-day Roof Coverings (GI Sheets) 35 pcs./man-days Concrete Works: Concrete Pouring 0.30 pcs./man-days Rebars 20 – 30 kgs./man-days Finishing Rough Finish 10 sq.m./man-days Plain/Fine Finish 8 sq.m./man-days CHB Filling/Laying A. Cement Mortar Table 1. Quantity of Cement and Sand for CHB Mortar per square meter wall Size of CHB No. per sq.m. 40 Kg. Mixture Cement Bags A B C Sand 4”X8”X16” 12.5 0.525 0.394 0.328 0.0438 6”X8”X16” 12.5 1.013 0.759 0.633 0.0844 8”X8”X16” 12.5 1.500 1.125 0.938 0.1250 B. Mortar for Plastering Table 2. Quantity of Cement and Sand for Plastering per square meter 40 kg. Cement Bag Mixture Class 16 mm thick 20 mm thick 25 mm thick A 0.288 0.360 0.450 B 0.192 0.240 0.300 C 0.144 0.180 0.225 D 0.120 0.150 0.188 Sand 0.016 0.020 0.025

1. Find the area of the wall (two faces) Area = 3.00 X 4.00 X 2 faces Area = 24 sq.m. 2. Refer to Table 2 under 16 mm thick plaster Class “B” mixture: Multiply: Cement = 24 X 0.192 = 4.6 bags Sand = 24 X 0.016 = 0.384 cu.m. C. CHB Footing Table 3. Quantity of Cement, Sand and Gravel for CHB Footing per square meter Length Dimension Centimeters Thick Width 10 30 10 35 10 40 10 50 15 40 15 45 15 50 15 60 20 40 20 50 20 60

Cement in Bags Class Mixture 40 kgs Cement A B 0.270 0.225 0.315 0.263 0.360 0.300 0.450 0.380 0.540 0.450 0.608 0.506 0.675 0.563 0.810 0.675 0.720 0.600 0.900 0.750 1.080 0.900

Aggregate Sand Gravel cu.m. cu.m. 0.015 0.030 0.018 0.035 0.020 0.040 0.020 0.050 0.030 0.060 0.034 0.068 0.038 0.075 0.045 0.090 0.040 0.080 0.050 0.100 0.060 0.120

1. Solve for the net length of the CHB wall Net Length = 40 m – (0.25 X 11 post) = 37.25 meters 2. Refer to Table 3 along the 15 X 50 cm footing dimensions 40 kgs. cement Class “A” Mixture; Multiply: Cement = 37.25 X 0.675 = 25.14 say 26 bags Sand = 37.25 X 0.038 = 1.4 say 1.50 cu.m. Gravel = 37.25 X 0.075 = 2.8 say 3.00 cu.m. MAINTENANCE BY CONTRACT (MBC) METHODS OF CONSTRUCTION 1. PATCHING POTHOLES – should be done to the areas specified by the contracts and plans duly approved by the Engineer Materials to be used must be suitable to acquire best result when compacted. SCHEDULE OF WORKS: MONTHLY 2. RESHAPING - should also be done to areas required in the plan and contracts. All works should conform to what will be described in the specification. SCHEDULE OF WORKS: QUARTERLY

3. VEGETATION CONTROL AND CLEANING DITCHES – All objects subject for the obstruction of the designed areas should be removed and cleared. SCHEDULE OF WORK: TWICE A YEAR 4. REGRAVELLING - All materials shall consist of hard, durable particles or fine divided mineral matter that can be compacted reaching for stable sub-base. Using especially equipped vehicles materials should be distributed in a continuous uniform layer. The uniform thickness of sub-base materials shall be adjusted prior to the compaction by watering or by drying as required in order to obtain the required compaction. Compaction shall continue until a field density of at least 100 (%) percent of the maximum dry density. SCHEDULE OF WORKS – ANNUALAL 5. BLADING/GRADING – All unstable materials should be removed in areas subject for blading/grading. These areas should be brought to a grade required in the plan and contracts. Compaction will follow using heavier compacting units until required density can be attained.