chapter 6 bridge plan - jica · figure 6-2 relationship between existing bridge and replaced bridge...

CHAPTER 6

BRIDGE PLAN

6. BRIDGE PLAN

6.1 Basic Policy of Bridge R

6.1.1 Bridge Planning

The standard design ofapproach road are determisurvey. The type and dimen“Strengthening of Constructhe quality control projectconstruction technology, ancontractors.

6.1.2 Superstructure

(1) Bridge width

A bridge width with 9 m width for the study as shown

Number of lane: Two (2) Width (m) : 1.0+7.0+

(2) Bridge length

Bridge length(Lp) will be bridge inventory, The bridgethe bridge. For instance, if tbridge length will be plannenew bridge length will be de

The Project for Study on the Improvement of E

6-1

Replacement Plan

f bridge includes superstructure, substructure, fined based on the bridge inspection data collectnsion of standard design refer to the drawing collecction Quality Control Project by JICA” (hereinaftet). The standard design would be planned in and construction material suitable for the capability

(traffic lane 7m) includes shoulder. is applied as sn in Figure 6-1.

+1.0 m

Figure 6-1 Bridge width

determined taken into account a data of the existine length is determined by the existing bridge lengtthe HWL will be 1.0m high above the bridge eleved three times longer than existing bridge lengthtermined as follows.

Existing Bridges Final Report

foundation and ed through the

cted through the er referred to as a way that the y of Cambodian

standard bridge

ng bridge in the th and HWL of vation, the new

h. The expected

The Project for Study on the Improvement of Existing Bridges Final Report

6-2

Lp(m)=L*3.0 HWL=GH+1.0m (3 times of the existing bridge length L) (0.75m<HWL 2.0m) Lp(m)=L*2.0 HWL=GH+0.5m (2 times of the existing bridge length L) (0.25m<HWL 0.75m) Lp(m)=L*1.5 HWL=GH (1.5 times of the existing bridge length L) (0.0m<HWL 0.25m) Lp(m)=L HWL< girder under surface (HWL 0.0m) Where;

L : Length of existing bridge Lp : Length of replacement bridge HWL : High water level from the elevation of existing bridge

Figure 6-2 Relationship between existing bridge and replaced bridge

(3) Bridge type and span length

Take into consider the capability of the local contractor, the bridge type conform to the bridge span are proposed as follows.

RC Flat Slab Bridge : L = 10 m RCDG Bridge : L = 15 m to 20 m PC Hollow Slab Bridge : L = 20 m

Note: PC hollow slab bridge will be adopted if the construction site is near Phnom Pen (within

a100km radius of the fabrication site),RCDG: Reinforced Concrete Deck Slab


6-3

(4) Bridge accessories

Bridge accessories would be determined based on the drawings collected through the Quality Control Project.

1) Hand Rail : Reinforced Concrete Handrail 2) Drainage : Pipe drain 3) Expansion : Reinforced by steel at corner of slab 4) Bearing : Elastomeric bearing 5) Wearing Surface : Concrete (Asphalt : in case that the superstructure is PC Hollow

Slab Bridge)

6.1.3 Substructure

The dimension of substructure will be determined based on the bridge inventory data as follows:

(1) Height of abutment (HA)

HA(m)= Maximum height(5.0m)

(2) Height of Pier (HP)

HP(m) = GL + HWL + AL + GRL + BH Where; GL : Maximum clearance of the existing bridge (survey) HWL : High water level from the elevation of existing bridge (survey) GDH : Girder height (planning) AL : Allowable clearance from HWL to bottom of planned bridge (1.0m) GRL : Distance between surfaces of ground to the top of footing (1.0m) BH : Thickness of footing (planning)

Hp 8.0m

8.0m<Hp

Figure 6-3 Pier type

6.1.4 Foundation

Bridge foundation type anfeatures at the river bed or ne

River Bed

1 Fine aggregate(2 Coarse aggreg3 Gravel(24 Boulder(75 Rock(More t

6.1.5 Approach Road

The length of the approacbridge site and set as follows

(1) Length of approach road

1) Flat plane LF(m)=(PH-GH)x200/I

I : Slope 4.0% 2) Gentle hill

LG(m)=1/2LF (m) 3) Steep mountain

LS(m)=0.0

(2) Length of approach slab

LL=4.0m

(3) Width of approach road

Figure 6


6-4

nd length of pile would be determined based on ear the river.

Table 6-1 Foundation type

d condition Foundation Type (Pile length)

0.35mm or less) RC square pile (L=20m) ate(0.35-2mm) RC square pile (L=15m) 2-75mm) RC square pile (L=10m) 5-300mm) Spread foundation than 300mm) Spread foundation

ch road are determined based on the geographicas.

Figure 6-4 Approach road

6-5 Standard width of approach road

4.0m


the geological

al feature at the

Parabola L(m)

6.1.6 Protective and preventive

As a result of site investhave been found caused bundergo proper measures toand it is necessary to reinfofor a score prevention and s

Figure 6-6

.

6.1.7 Temporary detour during

Case1: Height of the roadEmbankment is co

Case2: Height of road su

Temporally bridge


6-5

measures

tigation in February 2012, serious damages or failby scouring around bridge abutments and piers.o recover from the harmful effects caused by the florce durability of the slope protection. Gabion matslope protection in this study.

6 Slope protection and scour prevention

g the construction of new bridge

d surface from river bed is less than 5m onstructed beside a new bridge as detour

urface from river bed is larger than 5m e is constructed beside a new bridge as a detour.


lures of bridges They need to ooding of 2011 ttress is applied

6.1.8 Standard Drawings

General drawings of each

Fig


6-6

h type of bridges are shown in the Figure 6-7 to Fig

gure 6-7 RC Flat Slab Bridge


gure 6-9.


6-7

Figure 6-8 RCDG Bridge


Figure 6


6-8

6-9 Pretension Hollow Slab Bridge



6-9

6.2 Target Bridges to be Replaced with First Priority

(1) List of Bridges on the Group1 and Group2

The selected 47 bridges are located along NR1 and NR7 are shown in Figure 6-10. An example of the dimensions and properties of bridges are listed in Table Serial from No.1 to No.47.

Figure 6-10 Location of the Bridges


6-10

Serial No. 1 Road No. 11 Coordinate Bridge No. 2 North Latitude 11 23' 23.3" Distance from PP 1) 49.04 km East Longitude 105 19' 58.6"

Replacement Bridge Existing Condition of the Bridge Superstructure

Bridge Type PC Hollow Bridge Type Steel Truss Bridge Length 80.0 m Bridge Length 79.9 m No. of Span 4 Span Length 15.5+48.85+15.55 m Width 9.90 m Width 6.30 m Grand Surface 2) 0 m Particle Size Fine aggregate

Pier

Pier Type Single Column Height 18.0 m Foundation Type Pile (φ500) Pile Length 20.0 m

Abutment Abutment Type Inverted-T Height 5.0 m Foundation Type Pile (□400*400) Pile Length 20.0 m

Serial No. 2

Road No. 11 Coordinate Bridge No. 3 North Latitude 11 23' 58.1" Distance from PP 1) 49.39 km East Longitude 105 20' 25.1"


Bridge Type PC Hollow Bridge Type Steel Truss Bridge Length 80.0 m Bridge Length 79.5 m No. of Span 4 Span Length 15.5+48.5+15.5 m Width 9.90 m Width 6.30 m Grand Surface 2) 0 m Particle Size Fine aggregate

Pier

Pier Type Single Column Height 16.0 m Foundation Type Pile (φ500) Pile Length 20.0 m

Abutment Abutment Type Inverted-T Height 5.0 m Foundation Type Pile (□400*400) Pile Length 20.0 m

*Notes : 1) Distance from Phnom Penh to the bridge construction site 2) New road surface height from existing road surface


6-11

Serial No. 3 Road No. 70 Coordinate Bridge No. 1 North Latitude 11 59' 57.7" Distance from PP 1) 61.85km East Longitude 105 16' 00.7"


Bridge Type PC Hollow Bridge Type Bailey Bridge Length 85.0 m Bridge Length 84.0 m No. of Span 5 Span Length [email protected] m Width 9.90 m Width 5.40 m Grand Surface 2) 0.93 m Particle Size Fine aggregate

Pier Pier Type Single Column Height 10.0 m Foundation Type Pile (φ500) Pile Length 20.0m

Abutment Abutment Type Inverted-T Height 5.0 m Foundation Type Pile(□400*400) Pile Length 20.0 m

Serial No. 4

Road No. 70 Coordinate Bridge No. 2 North Latitude 11 59' 34.6" Distance from PP 1) 61.11km East Longitude 105 15' 50.9"


Bridge Type PC Hollow Bridge Type Bailey Bridge Length 75.0m Bridge Length 75.0m No. of Span 4 Span Length [email protected]+6.0 m Width 9.90 m Width 4.36 m Grand Surface 2) 1.53m Particle Size Fine aggregate

Pier Pier Type Single Column Height 12.0m Foundation Type Pile (φ500) Pile Length 20.0m

Abutment Abutment Type Inverted-T Height 5.0m Foundation Type Pile(□400*400) Pile Length 20.0m



6-12



Bridge Type RCDG Bridge Type Bailey Bridge Length 150.0m Bridge Length 150.0km No. of Span 8 Span Length [email protected][email protected] mWidth 9.90 m Width 5.36m Grand Surface 2) 0m Particle Size Fine aggregate



Serial No. 6



Bridge Type RCDG Bridge Type Bailey Bridge Length 30.0m Bridge Length 30.0m No. of Span 2 Span Length 15.0+15.0 m Width 9.90m Width 5.15m Grand Surface 2) 0m Particle Size Fine aggregate





6-13






Serial No. 8








6-14



Bridge Type RCDG Bridge Type Bailey Bridge Length 120.0m Bridge Length 119.98m No. of Span 6 Span Length 21.0+23.98+30.0+24.0+21.0m Width 9.90m Width 4.98m Grand Surface 2) 0m Particle Size Fine aggregate



Serial No. 10



Bridge Type RCDG Bridge Type Bailey Bridge Length 155.0m Bridge Length 150.94m No. of Span 8 Span Length (m) [email protected]+24.0+20.98

Width 9.90m Width 5.09m Grand Surface 2) 0m Particle Size Fine aggregate





6-15



Bridge Type PC Hollow Bridge Type Bailey Bridge Length 45.0m Bridge Length 27.0m No. of Span 3 Span Length 27.0m Width 9.90m Width 5.10m Grand Surface 2) 2.73m Particle Size Gravel



Serial No. 12



Bridge Type PC Hollow Bridge Type Bailey Bridge Length 20.0m Bridge Length 18.0m No. of Span 1 Span Length 18.0m Width 9.90m Width 5.10m Grand Surface 2) 0.81m Particle Size Gravel

Pier Pier Type None Height - Foundation Type None Pile Length -




6-16



Bridge Type PC Hollow Bridge Type Steel Girder Bridge Length 130.0m Bridge Length 129.07m No. of Span 7 Span Length [email protected]+12.03 m Width 9.90m Width 7.03m Grand Surface 2) 1.03m Particle Size Fine aggregate

Pier Pier Type Single Column Height 14.0m Foundation Type Pile(□400*400) Pile Length 20.0m


Serial No. 14

Road No. 314C Coordinate Bridge No. 1 North Latitude 11 04' 41.9" Distance from PP 1) 110.31km East Longitude 105 48' 10.6"


Bridge Type RCDG Bridge Type Bailey Bridge Length 70.0m Bridge Length 69.0m No. of Span 4 Span Length 24.0+21.0+24.0 m Width 9.90m Width 5.40m Grand Surface 2) 1.23m Particle Size Fine aggregate

Pier Pier Type Multi Column Height 6.0m Foundation Type Pile(□400*400) Pile Length 20.0m




6-17

Serial No. 15 Road No. 314D Coordinate Bridge No. 1 North Latitude 10 51' 36.0" Distance from PP 1) 134.78km East Longitude 105 55' 42.9"


Bridge Type RCDG Bridge Type Bailey Bridge Length 25.0m Bridge Length 21.32m No. of Span 2 Span Length 6.08+9.14+6.10 m Width 9.90m Width 5.44m Grand Surface 2) 0m Particle Size Fine aggregate



Serial No. 16

Road No. 316A Coordinate Bridge No. 1 North Latitude 10 59' 05.5" Distance from PP 1) 145.17km East Longitude 106 06' 47.8"


Bridge Type RCDG Bridge Type Bailey Bridge Length 25.0m Bridge Length 21.0m No. of Span 2 Span Length 21.0m Width 9.90m Width 5.30m Grand Surface 2) 2.03m Particle Size Fine aggregate





6-18

Serial No. 17 Road No. 372A Coordinate Bridge No. 1 North Latitude 11 49' 37.3" Distance from PP 1) 155.37km East Longitude 106 18' 59.3"


Bridge Type RCDG Bridge Type Bailey Bridge Length 30.0m Bridge Length 27.0m No. of Span 2 Span Length 27.0m Width 9.90m Width 5.10m Grand Surface 2) 1.53m Particle Size Coarse aggregate



Serial No. 18








6-19






Serial No. 20








6-20






Serial No. 22

Road No. 373B Coordinate Bridge No. 1 North Latitude 11 54' 12.8" Distance from PP 1) 133.34km East Longitude 106 05' 22.6"


Bridge Type RC Slab Bridge Type Concrete Wood deck Bridge Length 10.0m Bridge Length 9.0m No. of Span 1 Span Length 9.0m Width 9.90m Width 3.70m Grand Surface 2) 1.35m Particle Size Coarse aggregate





6-21



Bridge Type RCDG Bridge Type None Bridge Length 30.0m Bridge Length - No. of Span 2 Span Length (m) - Width 9.90m Width - Grand Surface 2) 1.03m Particle Size Gravel



Serial No. 24

Road No. 373D Coordinate Bridge No. 2 North Latitude 11 56 '56.9 " Distance from PP 1) 152.18km East Longitude 106 15' 22.7"


Bridge Type RCDG Bridge Type Wood Bridge Length 15.0m Bridge Length 12.5m No. of Span 1 Span Length 12.5m Width 9.90m Width 3.50m Grand Surface 2) 2.43m Particle Size Gravel





6-22



Bridge Type RC Slab Bridge Type Wood Bridge Length 10.0m Bridge Length 10.0m No. of Span 1 Span Length 10.0m Width 9.90m Width 3.50m Grand Surface 2) 1.55m Particle Size Gravel



Serial No. 26

Road No. 373D Coordinate Bridge No. 4 North Latitude 11 56' 18.7" Distance from PP 1) 150.84km East Longitude 106 14' 48.0"


Bridge Type RC Slab Bridge Type Wood Bridge Length 10.0m Bridge Length 8.0m No. of Span 1 Span Length 8.0m Width 9.90m Width 5.00m Grand Surface 2) 1.45m Particle Size Gravel





6-23






Serial No. 28








6-24



Bridge Type RC Slab Bridge Type Wood Bridge Length 10.0m Bridge Length 8.0m No. of Span 1 Span Length 8.0m Width 9.90m Width 3.50m Grand Surface 2) 1.15 Particle Size Gravel



Serial No. 30








6-25






Serial No. 32








6-26






Serial No. 34








6-27






Serial No. 36



Bridge Type RCDG Bridge Type Wood Bridge Length 40.0m Bridge Length 37.5m No. of Span 2 Span Length 12.0+12.0+13.5 m Width 9.90m Width 5.30m Grand Surface 2) 0m Particle Size Fine aggregate

Pier Pier Type Single Column Height 14.0m Foundation Type Pile(φ500) Pile Length 20.0m




6-28



Bridge Type RCDG Bridge Type Steel Girder+Bailey+Girder Bridge Length 55.0m Bridge Length 51.0m No. of Span 3 Span Length 12.0+21.0+18.0 m Width 9.90m Width 5.30m Grand Surface 2) 0m Particle Size Fine aggregate



Serial No. 38








6-29



Bridge Type RCDG Bridge Type Wood + Bailey Bridge Length 95.0m Bridge Length 91.0m No. of Span 5 Span Length [email protected][email protected] m Width 9.90m Width 5.30m Grand Surface 2) 0m Particle Size Fine aggregate


Abutment Abutment Type Inverted-T Height 5.0m Foundation Type Pile(φ500) Pile Length 20.0m

Serial No. 40








6-30



Bridge Type RCDG Bridge Type Bailey Bridge Length 20.0m Bridge Length 18.0m No. of Span 1 Span Length 18.0m Width 9.90m Width 5.30m Grand Surface 2) 0m Particle Size Fine aggregate



Serial No. 42



Bridge Type RCDG Bridge Type Steel Girder Bridge Length 35.0m Bridge Length 35.0m No. of Span 2 Span Length 11.5+12.0+11.5 m Width 9.90m Width 5.35m Grand Surface 2) 0m Particle Size Fine aggregate





6-31



Bridge Type RCDG Bridge Type Bailey Bridge Length 20.0m Bridge Length 18.0m No. of Span 1 Span Length [email protected] m Width 9.90m Width 4.60m Grand Surface 2) 0m Particle Size Fine aggregate



Serial No. 44



Bridge Type RCDG Bridge Type Steel Girder Bridge Length 35.0m Bridge Length 32.8m No. of Span 2 Span Length 2.9+8.9+10.5+10.5 m Width 9.90m Width 5.40m Grand Surface 2) 0m Particle Size Fine aggregate





6-32



Bridge Type RCDG Bridge Type Steel Girder + Bailey Bridge Length 65.0m Bridge Length 64.2m No. of Span 4 Span Length [email protected][email protected] m Width 9.90m Width 5.90m Grand Surface 2) 0m Particle Size Fine aggregate


Abutment Abutment Type Inverted-T Height 5.0m Foundation Type Pile(φ500) Pile Length 20.0ｍ

Serial No. 46



Bridge Type RCDG Bridge Type Steel Girder Bridge Length 40.0m Bridge Length 36.0m No. of Span 2 Span Length [email protected] m Width 9.90m Width 5.40m Grand Surface 2) 0m Particle Size Fine aggregate





6-33



Bridge Type RCDG Bridge Type Bailey Bridge Length 40.0m Bridge Length 36.0m No. of Span 2 Span Length [email protected]+9.0 m Width 9.90m Width 4.65m Grand Surface 2) 0m Particle Size Fine aggregate




(2) Dimension of the Target b

Among 47 bridges, four bto 6-14 . They are Bridge Nand Bridge No.1on PR373D

Figure 6-11


6-34

bridges

bridges are shown as examples and they are shownNo.3 on PR277, Bridge No.1 on PR314C, Bridge ND respectively.

Plan of No3 Bridge on the Route No. 277


n in Figure 6-11 o.1 on PR373B,

Figure 6-12 P


6-35

Plan of No1 Bridge on the Route No. 314C


Figure 6-13 P


6-36

Plan of No1 Bridge on the Route No. 373B


Figure 6-14 P


6-37

Plan of No.1 Bridge on the Route No. 373D



6-38

6.3 Construction Plan of the Bridge

6.3.1 Construction Method of the Bridges

Bridges being assumed as new bridge to be replaced in the Study are consisted of reinforced concrete (RC) bridges with span lengths ranging from 10 to 20 metres and pre-stressed concrete (PC) bridges. Since these bridges are commonly constructed in Cambodia, so that ordinary construction methods are assumed. The ordinary construction methods applied in this study are as follows:

(1) RC bridges

1) Construction on scaffolding (RC Flat Slab Bridge) 2) Girder erection by truck-crane (RCDG Bridge)

(2) PC bridges

1) Girder erection by truck-crane New bridges are assumed to be constructed at the same location of the existing bridge

when the new road is located on the existing road. In case that a new bridge is constructed at the same location as an existing one, the

construction sequence is described below. A detour road will be constructed when the road elevation is less than 5 metres above the

riverbed. A temporary bridge will be constructed when the road elevation is more than 5 metres. No embankment and/or jetty are assumed as the temporary construction road because most rivers are generally dry during the dry season. When the river flow is affected by backflow of the Mekong River, a detour road or a temporary bridge will be constructed on the upstream of the bridge. A schematic construction plan is shown in Figure 6-15.

When the river flow is not affected by backflow of the Mekong River, abovementioned method may or may not be applied.

Stock yard and casting yard for concrete girders are assumed to be located within the right of way (ROW) which is 50 metres wide.

Figure 6-15 Schematic Construction Plan

C: P

oten

tial R

equi

red

Wid

th (R

OW

50m

)

(Existing Bridge )New Bridge

Temporary Bridge or Embankment

Temporary Construction Road

Existing Road

100m

Approach Road

Approach Road

100m River or Floodplain


6-39

6.3.2 Construction Schedule of the Bridges

An example of construction schedule is shown in Table 6-2, which assumes an RC bridge with a bridge length of 30 metres (=2x15 metres), two abutments of pile foundation and one pier of pile foundation. Estimated construction duration is 15.5 months.

Table 6-2 Example of Construction Schedule

6.4 Cost Estimation of Bridges

6.4.1 Basis of Bridge Cost Estimation

Cost information was collected from the past bridge project which carried out by the Government and donor countries. As a result of the study, it is fined that each unit costs of the project were similar and more detailed information of the breakdown of unit cost by the Government was available. Therefore, cost estimation is carried out based on the cost information of the bridges which were funded by the Government. These bridges were constructed by Road Infrastructure Department Bridge Unit (Hereinafter referred to as RID Bridge Unit) and the HEC. The cost information is obtained from these groups. The administration and supervising fee are not included in the construction cost.

Cost information for five (5) bridges and one (1) slope protection are as follows: 1) Project Cost Estimated List, Project Work 1 Concrete Bridge Construction NR11 Kampong

Cham Province, PK 127+800 with Length 30.00mx11.00m, Total Estimated Cost 1,512,578,000.00 Riel, Year 2012

2) Project Cost Estimated List, Project of Negotiation Project Works 1 Concrete Bridge Construction Chrouy Pagoda Bridge Length 90.00mx8.00m Kandal Province, Kaosh Thum Didtrict, Leuk Daek Village, Total Estimated Cost 4,994,000,000.00 Riel, Year 2011

3) Cost Estimated List, Post of Cost Negotiation, Park of H.E.Sor Keng Bridge Construction Length 90m, Width 10.5m (5spanx18m), Location: AF Bridge(Stueng Sangke, Battembang City), Total Cost: 4,560,000,000Riel, March, 2008

4) Cost Estimated List, Post of Cost Negotiation, Wat Kor Bridge Construction Work Length 90mx11m (5spanx18m), Project Location: Stueng Sangke, Battembang District, Battembang Province, Total Project Cost: 4,889,000,000Riel, June, 2008

5) Cost Estimated List, Post of Negotiation Prek Chlung Bridge Construction Work, Length 137mx10.80m NR7 (PK277+822), Total Cost: 2,865,000,000 Riel, Year 2007

6) NR48 (PK268+830-PK269+290)

Month 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Site Office ConstructionPreparation (Detouring, TemporaryBridge, Removal)Foundation ConstructionSubstructure ConstructionSuperstructure ConstructionApproach Road ConstructionDemobilization


6-40

6.4.2 Feature of Bridge Construction Funded by the Government of Cambodia

In case of construction is funded by the Government, the cost of construction equipment owned by RID Bridge Unit and/or the HEC is not included in cost items, but only the lease price for equipment not owned by the two groups is included as the equipment cost. Therefore, construction cost consists of the direct cost, which includes those for materials, fuel and labour, and the indirect costs. The indirect cost is calculated as a certain percentage of the direct cost.

6.4.3 Calculation of Unit Costs

The five bridges were constructed over five years from 2007 and 2012. Price escalation for materials, fuel and labour during the five years has been examined based on the cost information. Table 6-3 shows price fluctuation of cement, sand, aggregates, fuel and labour. Table 6-3 shows that costs of cement and labour gradually increase year by year, and that costs of sand, aggregates, rebar and fuel remain almost the same.

Based on abovementioned cost study, price escalation should considered the duration of the implementation program. The price escalation was estimated by the forecast of GDP growth rate for short-term plan. The costs will be obtained by multiplying a factor in the unit costs shown in Table 6-5. The multiplication factor of 1.41 will be used based on analysis on the forecast of IMF database.

Table 6-3 Comparison of Unit Costs

Source: MPWT

6.4.4 Construction Costs of the Bridges on the Group1 and Group2

Material quantities of a newly constructed bridge will be calculated in accordance with the standard design. Quantities of concrete and rebar are calculated and listed in the standard design. These quantities are used for cost estimation of the target bridges.

Items for analyzing the construction costs for new bridges are as follows.

ProjectPrek Chlung

BridgePark of H.E. Sor

Keng BridgeWat Kor Bridge

Chrouy PagodaBridge

Road No.11 PK127+800 Bridge

Bridge Length 137mx10.8m 90mx10.5m 90mx11m 90mx8m 30mx11mYear 2007 2008.3 2008.6 2011 2012

Cement (Riel/t) 354,825 360,000 406,700 430,000 434,600Sand (Riel/m3) 37,350 48,000 49,800 20,000 20,000

Gravel (Riel/m3) 107,900 52,000 62,250 84,000 84,000Re-Bar (Riel/t) 2,697,500 4,400,000 5,395,000 3,200,000 3,362,000Disel (riel/lit) 3,200 4,150 5,700 4,600 5,100

Labor (Riel/day) 8,000 8,000 8,000 10,000 10,000Construction Cost (Riel/m2) 1,853,204 4,593,968 4,938,384 6,816,932 4,583,570

Note Existing Pier UseRound Pile CasingUse for Pier

Constructed by HEC HEC HEC RID Bridge Unit RID Bridge Unit


6-41

(1) Bridges

1) Concrete 2) Rebar 3) Superstructure miscellaneous, such as bearings, 4) Expansion joints, etc. 5) Substructure miscellaneous, such as earthwork, scaffoldings, false work, signboards,

etc.

(2) Approach road

1) Earthwork 2) Pavement

(3) Revetment and rived bed protection

Revetment and river bed protection are calculated based on the gabion cost per square metre derived from the cost information.

Results of the analysis on construction costs are shown in Table 6-5. Table 6-4 shows unit costs. Table 6-6 shows construction costs of the bridges on the

Group1 and 2 estimated by the unit costs. The costs are not include administration and supervising fee.

Table 6-4 Unit Costs Bridge

Material

Concrete /m3 Rebar /t Miscellaneous /m2 45Mpa 40Mpa Pile 32Mpa Structure Pile Super Sub

Riel 3,580,829 1,701,602 1,698,088 610,815 11,004,647 10,945,517 196,293 234,463 US$ 868 412 411 148 2,666 2,652 48 57

1US$=4,127.27 Riel Road

Material Earth /m3 Pavement /m2 Gabion /m2 Temporary Bridge /m2

Riel 37,554 142,025 337,334 4,748,381 US$ 9 34 82 1,150

1US$=4,127.27 Riel


6-42

Table 6-5 Analysis of Construction Cost (USD)

Source: MPWT

Table 6-6 Construction Costs of the Bridges Road No.

Bridge No. Cost (USD) Sub Total

(USD) Road No.

Bridge No.

Cost (USD)

Sub Total (USD)

11 No.2 2,213,281

4,233,259

373D

No.1 223,151

3,301,477

No.3 2,019,978 No.2 332,200

70 No.1 2,074,419

4,014,307 No.3 284,420

No.2 1,939,888 No.4 284,980

73

No.4 3,568,084

14,441,352

No.5 381,320 No.5 1,059,957 No.6 700,781 No.6 1,319,739 No.7 265,982 No.7 1,163,920 No.9 270,778 No.8 3,273,284 No.10 280,758

No.16 4,056,368 No.12 277,107

277 No.3 1,076,648

1,447,291 375

No.2 824,145 1,773,503 No.4 370,643 No.3 328,309

279 No.7 3,170,040 3,170,040 No.4 621,049 314C No.1 1,033,501 1,033,501

377

No.1 1,049,340

13,371,630

314D No.1 508,472 508,472 No.2 1,375,449 316A No.1 591,837 591,837 No.3 1,262,579

372A

No.1 582,900

2,452,042

No.4 2,183,318 No.2 510,055 No.5 1,471,081 No.3 517,637 No.6 596,511 No.4 324,716 No.7 1,000,005 No.5 516,734 No.8 370,706

373B No.1 316,660 316,660 No.9 838,725 No.10 1,437,826 No.11 893,045 No.12 893,045

Total 50,655,371 Source: Study Team

Bridge onNo.11 PK127+800

Chrouy PagodaBridge

Park of H.E.SorkengBridge

Wat KorBridge

Prek ChlungBridge

Earth workon No.48

Average

RID BridgeUnit

RID BridgeUnit

HeavyEquipment

Center

HeavyEquipment

Center

HeavyEquipment

Center

HeavyEquipment

Center

1) Bridge

Concrete 45Mpa Riel/m3 - - - - 2,539,595 2,539,59540Mpa Riel/m3 1,246,146 1,010,107 1,023,431 1,547,557 (850,396) 1,206,81040Mpa(Pile) Riel/m3 1,245,965 1,010,147 1,023,431 1,537,730 (850,396) 1,204,31832Mpa Riel/m3 478,656 387,749 - - - 433,202

Reinforce Bar Structure Riel/t 7,581,293 5,957,532 7,799,247 9,880,785 (4,562,664) 7,804,714Pile Riel/t 7,581,847 5,789,234 7,799,247 9,880,784 (4,562,664) 7,762,778

Riel/m2 100,454 60,927 154,667 154,323 225,704 139,215Riel/m2 124,084 195,358 191,380 154,323 (32,467) 166,286Riel/m - 1,179,651 - - - 1,179,651

2) Approch Road

Earth Riel/m3 11,999 26,074 31,273 39,219 24,603 26,634Pavement Riel/m2 103,136 - 98,317 - - 100,727

3）Gabion

Gabion Riel/m2 293,244 293,244PierFoundationused Roundand CasingPile.

PC HollowGirder, ExistingPier used

Note

Project Name

Unit

Constructed by

Superstructure Miscellaneous

Substructure Miscellaneous

Pile Miscellaneous

chapter 6 bridge plan - jica · figure 6-2 relationship between existing bridge and replaced bridge...

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