equipment labor capabilities 1

EQUIPMENT CAPABILITIESType of equipment

Average Capabilities1. Bulldozer (108) (a) Clearing

500 sq.m./hr.

(b) Stripping

200 sq.m./hr.

Excavation:

1. Common Soil

45 cu.m./hr.

2. Slightly Hard Materials

25 cu.m./hr.

(d) Quarrying:

107 Common Materials

50 cu.m./hr.

108 Aggregate

40 cu.m./hr.

Boulders

15 cu.m./hr.

200 Needs screening

(e) Pushing

3 cu.m./hr

2. Road Grader (a) Subgrading

300 cu.m./hr

(b) Spreading

50 cu.m./hr.

3. Payloader

(a) Loading

30 cu.m./hr.

4. Crane Shovel

(a) Loading

35 cu.m./hr.

5. Sheep Foot Roller

(a) Static Rolling (12 passes-15 cm./lift)15 cu.m./hr.

(b) Vibratory Rolling ( 4 passes-15 cm.lift)135 cu.m./hr.

6. 3- Wheel Road Roller(a) Static Rolling (6 passes -20 cm. lift )24 cu.m./

7. Tractor Drawn Roller(a) Vibratory Rolling (6 passes-20 cm. lift)24 cu.m./hr.

8. Tandem Roller

(a) Static Rolling (6 passes-20 cm. lift )24 cu.m./hr.

(b) Vibratory Rolling (6 passes-60 cm. lift)72 cu.m.,/hr.

9. 6-T Dump Truck

(a) Hauling Common Borrow Base Course3.5 cu.m./hr.

(b) Hauling Selected Borrow Base Course5.0 cu.m./hr.

Hauling Concrete Batch Class A2 Batch/trip

10. 2 T-Dump Truck(a) Hauling Common Borrow Base Course2.5 cu.m./trip

(b) Hauling Selected Borrow Base Course4.0 cu.m./hr.

Hauling Concrete Batch Class A

1 Batch/trip

11. Buggy

(a) Hauling Concrete Mix

0.17 cu.m./trip

12.Wheel Borrow

(a) Hauling Aggregates

0.17 cu.m./trip

(b) Hauling Concrete Mix

0.05 cu.m./trip

13. Water Truck

(a) Watering

1000sq.m./trip

14. Concrete Mixer

(a) Mixing Concrete

9 cu.m./hr.

15.Rock Crusher

(a) Crushing mixed sand & gravel

30 cu.m./hr.

16. Concrete Vibrator

(a) Vibrating Concrete Mix

40 cu.m./hr.

17. Concrete Floor Finisher(a) Finishing Concrete Floor

140 cu.m./hr.18.Percussioned Drilling(a) Drilling Hard Rock

0.23 m./hr.

(b) Drilling Loose Rock

0.30 m./hr.

Drilling Limestone

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 & 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 a

@ base of tree

3) Grubbing

Sq.m./man-day

Vegetation Type

a) Dense vegetation in firm soil covering80

the whole area

b) Spatse vegetation in loose soil

250

II. For Item 105- Excavation for Roadway & Drainage

Activity

Productivity1) Excavation

Cu.m./man-day (throwing dist. in m.)

Soil Type

0-4m.

4-6m.

6-8m.

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 hard 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

4.50-5.50

b) Firm

2.50-4.00

c) Hard

1.50-2.50

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 loaders whose output must be matched with that of the excavators.

Necessary output for the Loading ActivitySoil Type

Loading HeightProductivity cu.m./man-daya) Loose

0.1 m.

12-15

b) Loose

1-2 m.

7-10

c) Loose

Over 2 m.

4-5

III. For Item 106- Excavation for StructuresActivity

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

Productivity1) Backfilling & Tamping

3 cu.m./man-day

V. For Item 108- Aggregate Sub- Base Course

Activity

Productivity

1) Quarrying (Excavation & Gravel)

0.50-2.00 cu.m./man-day2) Loading

7.00-10.00 cu.m./man-day

3) Spreading

8.00-12.00 cu.m./man-day

4) Compacting

8.00-12.00 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

0.50-2.00 cu.m./man-day

2) Loading

7.00-10.00 cu.m./man-day

3) Spreading

8.00-12.00 cu.m./mn-day

4) compacting

8.00-12.00 cu.m./man-day

5) Hauling- please refer to activity no.5 of Item 108

6) Screeping

3.00-5.00VII. 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-day/ring

3)Laying of standard culvert (24 in. dia.)

Refer culvert laying data belowOr 0.60 m. dia., length 6.00 m., including

Excavation, culvert bad and backfill.

4) Building of headwalls with masonry blocks10 man-day/2 headwalls

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 of culvert, backfilling & 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 MATERIALCONCRETE (BASED) on the 88 lbs. bag of cement

CLASS A CONCRETE ( 3000 psi)

CEMENT 9.1 bags/cu.m of concreteSAND- 0.50 cu.m/cu.m of concrete

GRAVEL 0.84 cu.m/cu.m of concrete

CLASS B CONCRETE ( 2500 psi)

CEMENT 8.38 bags/cu.m of concrete

SAND- 0.45 cu.m/cu.m of concrete


CLASS C CONCRETE ( 3500 psi)




CLASS D CONCRETE ( 4000 psi)




FOR BRIDGE ESTIMATE

LUMBER for false work 60 bd.ft/cu.m of concrete

NAILS

- 2 kilos/cu.m of concrete

TIE WIRES

- 1.1 kilos/cu.m of concrete

Painting structural steel 3 gals/ton

AVERAGE FUEL CONSUMPTION PER DAY

FUEL

ENGINEGEAR

GREASEOIL#10

OIL

OIL

Crane,140 liters (diesel)4 liters

1 liter

2 lbs.

-

Diesel Hammer, 20 liters-

-

-

1 liter

( diesel)

Bulldozer, 200 liters3 liters

1 liter

1 lb.

1 liter

( diesel)

Payloader, 100 liters3 liters

1 liter

1 lb.

1 liter

( diesel )

Grader, 120 liters

3 liters

1 liter

1 lb.

1 liter( diesel 0

Roller, 60 liters ( diesel)2 liters

1 liter/wk.2 lbs./wk.1 liter

Dump Truck, 60 liters1 liter

2 liters/wk.1 lb.

1 liter

( diesel )

Mixer ( 1- bag ), 40 -

-

0.5 lb.

-

Liters ( gasoline )

Vibrator, 15 liters

-

-

-

-

( gasoline )

One Bagger Mixer- 100 bags/day

Crane- minimum of 2 piles/day ( 16m. length including spotting )

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. Only 3 times. Therefore the volume of the excavation has to be limited following rates and then applicable:

Soil Type

Productivitya) 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

Dense of Vegetation ( No. of Trees/Hectares )

Power

0-50 51-100 101-200 201-250 251&>

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

B. EXCAVATION ( Common Materials )B.1 CRANE

Tonnages

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

Horse

Production ( cu.m./hr.) Bank Volume

Power

Canal

Structure

120

30

15

140

35

20

160

40

25

180

45

30

200

50

35

B.3 BACKHOE

Bucket ( cu.m.)


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 ( H.P.)

Production (cu.m./hr.) Bank Volume

Common Aggregate Cobbles/Boulders

140

55

60

27

160

60

65

29

180

65

70

31

200

70

75

33

D. LOADING

Bucket ( cu.m.)


Common Aggregate Cobbles/ Boulders

1.0

50

55

35

1.5

75

80

55

2.0

100

110

75

2.5

125

135

90

3.0

150

165

110

E. SPREADING

Grader ( H.P.)

Road ( cu.m./hr.) cmp.

Common Aggregate

80-100

60

70

100-125

70

80

125-150

90

100

150-175

100

110

F. SIDE BORROW ( Common Materials )

Dozer (H.P.)

Production ( cu.m./hr.) Compacted Volume140 35

160 40

180 45

200 50G. STP. BACKFILL WITH SPREADING & COMPACTION

Dozer

Production cu.m./hr. Compacted Volume140 50

160 70

180 80

200 90

H. EMBANKMENT COMPACTION

Capacity ( cu.m./hr.) Compacted Volume

Tons

Self-Propelled

Tamp. Foot drumVib. drum

10

80

60

12

90

70

15

120

90

I. LOADING, SPOT & MANEUVER TIME

Using Loader with 1.00 cu.m. Bucket

Dump Truck Capacity

Compacted Volume ofCobbles/Boulders

CommonRoad Surface

MaterialsMaterials

4.00 cu.m.

7 min.

7 min.

10 min.

6.00 cu.m.

9 min.

9 min.

12 min.

8.00 cu.m.

11 min.11 min. 15 min.

J. AVERAGE SPEED OF DUMP TRUCK

Type of Road

Kilometer per hour

With Load

Without Load

Concrete/Asphalt Road

35

45

Good Maintained Gravel Road30

35

Poorly Maintained Gravel Road20

25

K. 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. per Hr., 4.00 LM/Hr. for thick & thin concrete piles.

N. MANUAL ASPECT

A. Excavation

A.1. Common Materials

Capacity ( cu.m./day) Bank Volume & Depth of Excavation

Type of Work

( meter )

Farmditchs

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./day/man) Bank Volume

Canal

1.00

Sructure

0.75

B. LOADING CAPABILTIES OF FIVE (5) LABORERS

Sand & Common Cobbles Boulders Cement R.S. Bars Lumber Ply

Gravel

cu.m./hr. cu.m./hr. cu.m./hr. cu.m./hr. bags/hr. kgs/hr. bd.ft./hr. pcs./hr.

4

5 3.5 3 300 6,000 4,000 250

C. UNLOADING CAPABILITIES OF FIVE (5) LABORERS

Sand & Common Cobbles Boulders Cement R.S. bars Lumber Ply

Gravelcu.m./hr. cu.m./hr. cu.m./hr. cu.m./hr. bags/hr. kgs./hr. bd.ft./hr. pcs./hr. 6 6 5 4 300 7,000 4,000 250

D. CUT, BEND,& PLACE RSB

Structure

1 Steelman & 1 Helper with Bar Cutter

Canal & Others

80 kgs./day

E. QUARRYING

Capability

cu.m./day/man

Sand & Gravel

Cobbles

Boulder

3.50

2.50

2.00

F. DEMOLITION OF CONCRETE

Slab & Wall

0.50 cu.m./man-day

Massive Concrete

0.20 cu.m./man-day

G. SCREENING OF AGGREGATES

Gravel

4.00 cu.m./day/man

Sand

6.00 cu.m./day/manH. MANUAL BACKFILL

Capacity : 3.00 cu.m./man

I. LAYING OF MATERIALS ( cu.m./day/man)

Cobbles 2.00

Boulders 1.50

J. SPREADING OF AGGREGATE

Capacity : 2.50 cu.m./day/man

K. RUBBLE MASONRY ( Concreting )

Crew : 1- Foreman, 2- Mason, 10- Laborers, & 1- L.E. Operator

Capacity : 6.00 cu.m./day

L. GROUTED RIPRAP

Crew : 1- Foreman, 2- Mason, 10- Laborers, & 1- L.E. Operator


M. C.H.B. : 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- L.E. Operator, 10- Laborers with one (1) bagger mixer


O. INSTALLATION OF STEEL GATES

Crew : 1- Mason & 5- Laborers

16 x 16 to 24 x 24

2 assy/day

Above 24 x 24

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 3000 psi

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- Mason, & 2- Laborers

Capability : 12 sq.m./day ( one side only )

R. REINFORCED CONCRETE PIPES

Crew

Capability

Diameter

inch

cm.

FabricationInstallation

1- Foreman

12

30

15

16

1- Mason

18

46

11

14

1-Carpenter/Steelman

24

61

9

12

12- Laborers with

30

76

6

10

1- Bagger Mixer

36

91

5

8

48

122

3

6

42

4

7

NOTE : TIME OF MIXER/DAY= BAGS OF CEMENT/DAY X 10 MIN./BAG

60 MINUTES/ HOUR

III. MATERIAL ASPECT

Class Strength Max. Aggre. Cement Sand Gravel Boulder

Size, in. bag,cu.m. cu.m./cu.m. cu.m./cu.m. cu.m./cu.m.A. Concretea. 211 bags 1.50

9.000.45 0.90

-

b. 200 kgs. e 2.00

7.000.50 1.00 -

Canal lining

200 kgs. e 1.00 7.50 0.48 0.96 -

B. Rubble Mason

w/ 211 kgs. e - 4.50 0.225 0.45 0.75

C. Grouted Riprap- 4.20 0.35 0.05 1.00

Plain Riprap - - - 0.10 1.00

D. Lean Concrete - 5.00 0.50 1.00 -

1000 psi

E. Gravel Blanket - - - 1.00 -

F. Filter Drain - - - - -

OTHER MATERIALS

ClassType of Strength F. Lumber pl. wd. Tie wr. Nail

Structure kgs. bd.ft/cu.m. pcs/cu.m. kgs.cu.m kgs/cu.mA

Bridge/Flume 211 40 1.00 1.25%RSB 2.50

A

Siphon/Box Cul. 211 25 1.25 1.205 RSB 2.00A Other Str. @ inc 211 25 1.25 1.10% RSB 2.00

A 211 5 0.10 - 0.50

B 200

5 - - 0.25

A 211 15 0.40 1.00%RSB 1.50

B 200 5 0.10 1.005RSB 0.50

A 211 5 - - 0.25

REINFORCED CONCRETE PIPES

Diameter

Fabrication Materials per pc.

Cement Sand Gravel G.I. F. Lumber Tie Wire CW

Sheet

Nails

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 0.3030 2.56 0.11 0.21 0.30 0.60 23.22 0.4036 3.33 0.14 0.28 0.34 0.72 50.43 0.5042 4.26 0.18 0.36 0.40 0.84 60.84 0.60INSTALLATION OF R.C. PIPES

DiameterCement SandGravel R.S.B. F. Lumber CWN & TWInches Bags Cu.m. Cu.m. kgs Bd.ft. kgs.

12 0.21 0.01 0.02 - 2.00 0.20

18 0.45 0.02 0.04 3.65 2.00 0.20

24 0.72 0.03 0.06 4.52 3.00 0.30

30 0.93 0.04 0.08 5.26 3.00 0.30

36 1.11 0.05 0.10 6.01 4.00 0.40

42 1.32 0.06 0.12 6.79 4.00 0.40PLASTERING C.H.B. BLOCK

Size

Materials per sq.m. for two (2) sides

Sand

Cement

4 & 6 0.034

0.41

G.I. LAYING OF C.H.B.

Size

Cement

Sand

Bags/aq.m.

Cu.m./sq.m.

4 0.55

0.046

6 1.07 0.089

RECOMMENDED INDIRECT COST

Estimated Direct

Indirect Cost for OCM & Profit Max.Mobilization

Cost ( E.D.C. )

Ranges

O.C.M. % of

C.P. % of E.D.C.

E.D.C.

Up to 1 Million

13%

15% 2% Above 1 M to 5 M 12% 14% 2%Above 5 M to 10 M 12%

14% 2% Above 10 M to 20 M 11% 12% 2%Above 20 M to 50 M 11% 12% 2% Note: The total contract price should be equal to or less than the total COA estimate plus 10% in order to sustain a finding of reasonableness otherwise the contract price will be deemed excessive.

ACEL RATE 1998

Operated Equipment

Description

Rate/DayBulldozer

Komatsu, D80A-12DD

Php 9,160.00

180 Hp

Payloader

75 TCM/Clark, 1.53 cu.m.,

Php 10,010.00

Capacity, 151 Hp

Road Grader

Mitsubishi MG 500 170 Hp

Php 8,808.00

Dump Truck

Japan & Other Make,

Php 9,016.00

10 cu.m. Capacity

Road Roller

Ingersoll Rand SP48 MI Tons Php 8,701.00

Crane

All models, Truck mounted,

Php 11,296.00

standard mechanically operated

31-35 tons

Back Hoe

Komatsu PC 120, Capacity

Php 9,656.00

90 Hp

Transit Mixer

Japan make 3.8 cu.m., 46 cu.m.Php 8,528.00

Capacity 175 Hp

Air Compressor

Gas/Diesel Engine, CFM

Php 1,376.00

20 Hp

Plate Compactor

12 Hp Engine Driven

Php 1,648.00

Asphalt Paver/FinisherWorthington 34 ( basic Php 3,320.00

Equipment only)

Asphalt Distributor

Little Ford Sprasmaster

Php 5,784.00

Bare Equipment

Description

Rate/DayPile Hammer (w/o crane) Domag D8-22

Php 5,067.00

Drop Hammer (w/o crane) Two tons w/ Pile Hammer

Php 100.00

Jack Hammer

Stanley, Hydraulic w/o

Php 294.00

power unit

Welding Machine

Gas/Diesel Driven 250

Php 300.00

Amps., 185 Hp

Concrete Mixer

1-Bagger

Php 298.00

Concrete Vibrator

Gas or Diesel Driven

Php 341.00

Chainsaw

Husquama, 2100 CD w/o BladePhp 180.00

Water Truck

All makes, 500-1000 gals.

Php 1,773.00

Water Pump

All models 3.5 4 size

Php 119.00

Concrete Batch Plant

With Cement Silo Manual

Php 5,113.00

/mo.x Rated Cap. In

Cu.m./hr.

LABOR OUTPUT CAPABILITIESREMOVAL EXISTING STRUCTURES :

Lumpsum

Installations:

Timber:

Girts and Girder

0.10- 0.15 cu.m./man-days

Floor Joist

150 L.M./man-days

Flooring boards

15-18 sq.m./man-days

Post

0.14 cu.m./man-daysWalling/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 x 8 Ply Wood)

30 sq.m./man-days

Windows sashes :

Jambs 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 Installaation

60 L.M./man-days

Fascia Boards

0.05 cu.m./man-days

Roof Coverings ( G.I. 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

6-8 sq.m./man-days

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 D Sand4 x 8 x 16

12.5 0.525 0.394 0.328 0.0438 6 x 8 x 16 12.5 1.013 0.759 0.633 0.0844

8 x 8 x 16 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 Bags

Mixture Class

16 mm thk.

20 mm. thk.

25 mm. thk.

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

0.0251. Find the area of the wall ( two faces )

Area = 3.00 x 4.00 x 2 faces

A = 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 Meter LengthDimension

Cement in Bags Class Mixture

AggregateCentimeters

40 kg. Cement

Sand

Gravel

t

w

A

B Cu.m.

Cu.m.

10

30

0.270

0.225 0.015

0.030

10

35

0.315

0.263

0.018

0.035

10

40

0.360

0.300

0.020

0.040

10

50

0.450

0.380

0.020

0.050

15

40

0.540

0.450

0.030

0.060

15

45

0.608

0.506

0.034

0.068

15

50

0.675

0.563

0.038

0.075

15

60

0.810

0.675

0.045

0.090

20

40

0.720

0.600

0.040

0.080

20

50

0.900

0.750

0.050

0.100

20

60

1.080 0.900

0.060

0.120

1. Solve for the net length of the CHB wall

Net length = 40 m ( .25 x 11 post )

= 37.25 meters

2. Refer to Table -3 along the 15 x 50 cm footing dimensions 40 kg. 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 1.5 cu.m.

Gracel : 37.25 x 0.075 = 2.8 say 3.0 cu.m.

MAINTENANCE BY CONTRACT ( MBC )

METHODS OF CONSTRUCTION1. PATCHING POTHOLES Should be done to the areas specified by the contracts and plans duly approved by the Engineers. 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 WORKS :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 material should be distributed in a continuos uniform layer. The uniform thickness of sub-base material 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 (%) per cent of the maximum dry density.

SCHEDULE OF WORKS - ANNUAL

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 plans and contracts. Compaction will follow using heavier compacting units until required density can be attained.

equipment labor capabilities 1

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