CAD drawings of subgrade and protection of expressway

Uploaded on: 2019-06-03 19:08:07 come from: Road and bridge municipal administration / Expressway project / Design drawing of expressway

zero

5 points

Including mainstream subgrade works and slope protection of expressway, subgrade and pavement drainage and other drawings, C3-4 high fill and deep cut subgrade design drawing - general drawing of anchor cable anchor rod, C3-6 low fill and shallow cut subgrade treatment design, C3-6 roadbed treatment design drawing, C3-10 steep embankment or filling and excavation junction treatment design drawing, C3-18 subgrade protection engineering design drawing C3-18 subgrade protection engineering design drawing - general drawing of retaining wall, C3-22 subgrade and pavement drainage engineering design drawing

CAD Drawing of Expressway Subgrade and Protection - Figure 1

CAD Drawing of Expressway Subgrade and Protection - Figure 2

CAD Drawing of Expressway Subgrade and Protection - Figure 3

CAD Drawing of Expressway Subgrade and Protection - Figure IV

CAD Drawing of Expressway Subgrade and Protection - Figure V

Click to download the source file now

Special statement: This material belongs to the sharing uploaded by users Downloaded content, only for learning, not for commercial use. If there is any copyright problem, please timely contact Station delete!

Collection

WeChat code scanning and sharing

Click to share

Related recommendations

expressway Construction Scheme for Subgrade Overwet Soil
This paper introduces the method of improving the over wet soil with large natural water content and small CBR of Lewen Expressway through tests, and forms a complete set of construction technology of quicklime improved soil through the construction of the test section.

Topic: Construction Scheme for Expressway Works in Rainy Season Construction Scheme of Asphalt Road Construction scheme for roadside pole foundation of expressway
expressway Design Drawing of Subgrade Expansive Soil
This data is the design drawing of expressway subgrade expansive soil. The drawings include: strong expansive soil cut subgrade design drawing, medium expansive soil cut subgrade design drawing, weak expansive soil cut subgrade design drawing, expansive soil fill subgrade design drawing, etc. The design is accurate and detailed, which can be downloaded for reference by netizens.

Topic: Expressway shoulder Design Drawing of Highway Pavement Design drawing of expressway
some expressway Construction organization design of subgrade blasting
A high-speed project is located in Pingjiang County, starting from the Tongcheng boundary at the junction of Hunan and Hubei provinces, connecting Tongcheng to Pingjiang Expressway in Hubei Province, passing Dongta, Nanjiang Bridge, Meixian, the east side of Pingjiang County, Anding Town in the south, and ending at the Huangni boundary and connecting Liuyang Liling Expressway, with a total length of 73.027km.

Topic: Blasting construction scheme for subgrade of expressway Construction organization design of expressway tunnel Construction organization of expressway tunnel
expressway Subgrade finishing construction document
Our contract section is the tenth contract section of XX Expressway, located in XX Township, XX District, XX City, starting from K46+243.5 and ending at K50+735.811, with a total length of 3.3km; The total length of cold water paving interchange ramp is 3.038km. Wherein, the subgrade works are K46+611.5 ～ K48+020 There are 8 natural sections in total: K49+220.826 ～ K50+050.7, K50+133.7 ～ K50+243.231, AK0+238.260 ～ AK0+492.590, BK0+070.424 ～ BK0+360, CK0+498.656 ～ CK1+826.884, DK0+000 ～ DK0+174.938, EK0+442.171 ～ EK0+498.656. The thickness of the finish layer in Zone 96 is proposed to be 0.3m, and the materials used are stone powder: graded crushed stone=1:4 mixture, which is sourced from XX quarry, It is estimated that 29687m3 of finishing materials will be required in the bid section, with the unit price of about 186 yuan/m3 and the total price of about 5.522 million yuan.

Topic: Finishing construction scheme Construction Scheme for Expressway Works in Rainy Season Standard for subgrade of expressway
Sand filling expressway Subgrade construction
In order to ensure the filling quality and progress of the subgrade, two filling schemes are adopted for the filling of the test section. （1） Synchronous construction method of sand and clay. During the construction of this scheme, the sand and clay are always in a relatively horizontal state. In fact, the paving and rolling of sand and clay are synchronized. There are two different construction methods for simultaneous construction of sand and clay. First, after the edge covering clay and sand core are paved at the same time, the edge covering soil shall be compacted first, and then the sand shall be compacted after the compaction degree is reached. The second is to pave clay and sand at the same time. First, stabilize the clay twice, press the sand core, and finally roll the clay and sand at the same time. This filling method is difficult to operate in practice. The optimal moisture content of the two materials is different, and the compaction degree requirements cannot be met at the same time. Therefore, the first method is used to fill the test section.

Topic: Key points of high-speed subgrade construction High speed subgrade construction contract Construction Scheme for High speed Subgrade Filling
some expressway Subgrade surface clearing construction scheme
The reconstruction and expansion project of Changchun Lalinhe Expressway starts from the northwest ring of the built Changchun Ring Expressway (i.e. the Changchun transit section of the Beijing Harbin Expressway), and connects with the southeast ring of Changchun Ring Expressway through the Xiaoxitun hub interchange. The starting stake is K993+464.549. The route ends at the bridgehead on the south bank of North Lalin River in Caijiagou Town, Fuyu City, and at the end of the existing Changyu Expressway, with a total length of 143.634km and a stake number of K1137+098.135.

Topic: Construction Scheme for Expressway Subgrade Surface Cleaning Specifications for subgrade of expressway Standard for subgrade of expressway
expressway Construction table of subgrade works
Supervision Form 06-1 Approval Form for Inspection Application of Technically Complex Works 12, Supervision Form 07 Supervision Engineer's Instruction 13, Supervision Form 07-1 Supervision Engineer's Instruction Reply Form 14, Supervision Form 08 Approval Form for Unit Price of Newly Added Works 15, Supervision Form 09 Daywork Application/Approval Form 16, Supervision Form 10 Claim Application Form

Topic: Highway subgrade works Standard for subgrade of expressway Specifications for subgrade of expressway
some expressway Detailed construction drawing of subgrade and pavement drainage cad
This data is the detailed construction drawing of the subgrade and pavement drainage cad of an expressway, which includes the median drainage, shoulder drainage, centralized pavement drainage, etc. The design is detailed and standardized, and can be downloaded for reference.

Topic: Subgrade and pavement of expressway Expressway drainage Cad construction drawing of expressway
[Guizhou] Two way four lane expressway Subgrade protection design drawing
Overview: design load: highway Class I. Profile: the maximum longitudinal slope is 5%, the minimum slope length is 200m, the minimum radius of convex vertical curve is 4500m, and the minimum diameter of concave vertical curve is 3000m. The minimum radius of horizontal curve limit is 250m, and the minimum radius is 400m. Cross section: highway grade: two-way four lane expressway; Design speed 80km/h; Subgrade width: integral 24.5m, separate 12.25m; The median is 3m wide and the median is 2m wide. The cross slope of roadway and hard shoulder crown is generally 2%, and that of soil shoulder crown is 4%.

Topic: Highway subgrade slope protection Highway subgrade design Subgrade and pavement of expressway
expressway Civilized construction and environmental protection scheme of subgrade protection works
The subgrade of this contract section starts from K91+851 to K96+265, with a total length of 4.414km. The total length of the main line subgrade protection works in this contract section is 4450 m, and all of them are turf slope protection (cast-in-place concrete) within the embankment grid framework. The C20 cast-in-place ribs are 7072 m3 in total, grass seed sowing: 35962 m2, earth excavation: 6742 m3, planting soil: 3597 m3 (see the Yuechang Expressway Project Change Notice, No.: YCBG - (Bid 19-27) - 0051); The total length of the protection works in the pond section is 387m, and the embankment is fully paved with interlocking concrete precast blocks for slope protection. The C20 concrete precast blocks are 187m3 in total, the M7.5 rubble foundation is 275m3, the gravel cushion is 234m3, the wet foundation excavation earthwork is 774m3, and the filling is 3511m3.

Topic: Construction Scheme for Subgrade Protection of Expressway High speed protection construction scheme High speed environmental protection construction scheme
some expressway Construction scheme for subgrade protection and drainage works
Construction scheme for subgrade protection and drainage works of an expressway

Topic: Construction Scheme for Subgrade Protection and Drainage Works Construction Scheme for Subgrade Protection of Expressway Construction scheme for subgrade works of expressway
some expressway Construction Scheme of Subgrade Slope Protection Works along the River
The starting point of the contract section A7 of Tongxin Haiyuan Highway from the provincial highway 103 to the contract section of Haiyuan Highway is K38+500, which is located behind Hejiabao Village, along Zhuangzishang and Miaoergou to Xinzhuang, and then through Wangjiajing, the toll station of the main line is set near Wangjiajing, then Wangjing Bridge is set to connect with Tonghai Road, and the main line with Tonghai Road is set at K46+600, after passing the level crossing, the toll station of the main line is set at the end point, and the old road of Tonghai is expanded along the old road of Tonghai. The end point is level crossing with Heihai Road, and the stake number of the end point of the project is K48+392.523. The total length of the route is 9.893 km.

Topic: Construction Scheme of Highway Subgrade Protection Works Construction scheme of slope protection works Construction scheme of high-speed protection works
expressway Construction Scheme of Subgrade Slope Protection Works along the River
The starting point of the contract section A7 of Tongxin Haiyuan Highway from the provincial highway 103 to the contract section of Haiyuan Highway is K38+500, which is located behind Hejiabao Village, along Zhuangzishang and Miaoergou to Xinzhuang, and then through Wangjiajing, the toll station of the main line is set near Wangjiajing, then Wangjing Bridge is set to connect with Tonghai Road, and the main line with Tonghai Road is set at K46+600, after passing the level crossing, the toll station of the main line is set at the end point, and the old road of Tonghai is expanded along the old road of Tonghai. The end point is level crossing with Heihai Road, and the stake number of the end point of the project is K48+392.523. The total length of the route is 9.893 km.

Topic: Construction Scheme of Highway Subgrade Protection Works Construction scheme of slope protection works Construction scheme of high-speed protection works
Talking about expressway Protection and reinforcement technology of cutting slope
The protection and reinforcement technology of highway cutting slope is detailed and rich, which can be downloaded by netizens.

Topic: Talking about the Construction Technology of Expressway Subgrade Construction Scheme for Subgrade Protection of Expressway Construction Scheme for Expressway Works in Rainy Season
Detail design_ expressway Design drawing CAD of subgrade anchor frame protection (dwg format, editable)
This drawing is: CAD (dwg format, editable) of protection design drawing of anchor bolt frame for subgrade of expressway, design specification, detailed content, which can be used for reference by designers.

Topic: Expressway pavement details Highway subgrade slope protection Highway pavement design
Shao Huai expressway Observation and analysis of subgrade settlement and stability
Shaoyang Huaihua Expressway is a typical expressway in mountainous and heavy hilly areas, with strong undulating terrain, huge valleys, deep cut mountains and steep mountains.

Topic: settlement observation Specification for settlement observation and measurement of highway subgrade Settlement Observation Project Contract
expressway Test pile scheme of subgrade cement mixing pile
The D1K461+300 ～ D1K461+630 section is 330m long. The foundation treatment is designed as cement mixing piles with a length of 5.5 ～ 9.5m, a diameter of 0.5m, and a spacing of 0.8m. The piles are arranged in a regular triangle. The buried depth of surface water is 1.5~4m, and the water content of foundation soil is more than 35%. According to the design requirements, dry jet grouting (powder jet grouting pile) is adopted.

Topic: Cement construction scheme for expressway pavement Technical code for construction of highway cement concrete pavement Highway construction scheme (cement concrete road)
expressway Subgrade earthwork control scheme
In view of some errors and difficult problems that are easy to occur in each link when the subgrade earthwork of expressway is measured by "total amount control", this paper puts forward specific control and solutions.

Topic: Construction Scheme for Subgrade Stonework of Expressway Standard for subgrade of expressway Specifications for subgrade of expressway
Sand filling expressway New subgrade technology
New technology of filling expressway subgrade with sand new technology of filling expressway subgrade with sand new technology of filling expressway subgrade with sand

Topic: Technical code for subgrade filling construction of expressway Construction Scheme for Expressway Works in Rainy Season Technical disclosure of expressway pavement construction
expressway Special construction organization design of subgrade works
WXTJ-2 bid section of the expressway from XX to XX north section, AK0+000~AK1+204.657 section, with a total length of 1204.657m, and 89420m3 of rock filled subgrade in this section; Earth filling: 25800m3; Soil rock ratio 22%: 28%; The maximum filling depth is 9.985 m. The earth excavation is 16480 m3, and the maximum excavation depth is 4.678 m;.

Topic: Special Construction Contract for Expressway Subgrade Construction organization design of highway subgrade works Highway subgrade works
some expressway Bid construction team for Bid 6 of subgrade, bridge and culvert works
This contract section is the subgrade earthwork works of the sixth contract section of an expressway. The starting stake is at K56+000, and the ending stake is at K67+000, with a total length of 11.00km.

Topic: Standard for subgrade of expressway Construction Scheme for Expressway Works in Rainy Season Expressway bidding construction scheme
expressway Design Drawing of Subgrade Diamond Grid Slope Protection
This data is the design drawing CAD of expressway subgrade diamond grid slope protection. The drawings include: front view of mortar rubble diamond grid slope protection, construction drawing design of pilot section, design drawings of subgrade retaining and protection works, etc. The design is accurate and detailed, which can be downloaded for reference by netizens.

Topic: Slope protection design of expressway Expressway shoulder Slope protection construction of expressway
expressway Subgrade Excavation Method Statement (2013)
Guizhou XX to XX Expressway is the third vertical north section of Guizhou Expressway Network Plan ("678 Network") approved by Guizhou Provincial People's Government in February 2009. It connects with the proposed XX to XX (boundary of XX) Expressway in Chongqing in the north and XX to XX high-speed highway under construction in Guizhou in the south, connecting XX to XX and XX to XX national highways, It is another convenient highway channel for southwest China to go south to the sea, and plays an important role in the national and regional highway network. This section is TJ-08 section with a north-south trend and a total length of 10.202795km. The starting point of this bid section is at the end of XX hub, the starting stake number is K72+950, and it is located in XX Township. The end of this bid section is connected with the starting point of XX to XX section, the stake number of the end point is YK83+152.795, and the starting point of XX to XX section is K83+200.

Topic: Construction Scheme for Subgrade Excavation of Expressway Specifications for subgrade of expressway Standard for subgrade of expressway
expressway Subgrade finishing construction scheme
Our contract section is the tenth contract section of XX Expressway, located in XX Township, XX District, XX City, starting from K46+243.5 and ending at K50+735.811, with a total length of 3.3km; The total length of cold water paving interchange ramp is 3.038km. Wherein, the subgrade works are K46+611.5 ～ K48+020 There are 8 natural sections in total: K49+220.826 ～ K50+050.7, K50+133.7 ～ K50+243.231, AK0+238.260 ～ AK0+492.590, BK0+070.424 ～ BK0+360, CK0+498.656 ～ CK1+826.884, DK0+000 ～ DK0+174.938, EK0+442.171 ～ EK0+498.656. The thickness of the finish layer in Zone 96 is proposed to be 0.3m, and the materials used are stone powder: graded crushed stone=1:4 mixture, which is sourced from XX quarry, It is estimated that 29687m3 of finishing materials will be required in the bid section, with the unit price of about 186 yuan/m3 and the total price of about 5.522 million yuan.

Topic: Finishing construction scheme Construction Scheme of Expressway Subgrade Construction Scheme of Expressway Subgrade
expressway Template of settlement statement for subgrade works section
This data is the template of the settlement statement for the subgrade works section of the expressway. The contents are complete and can be downloaded

Topic: Highway subgrade works Standard for subgrade of expressway Specifications for subgrade of expressway
some expressway Special construction scheme for subgrade works
Natural zoning of highway: It is the principle of combining the comprehensiveness and dominance of natural climate factors. Based on the analysis of the actual relationship between natural comprehensive conditions and highway engineering, the leading signs with zoning significance are selected, and the zonal (latitude) and non zonal (altitude) differences of surface climate are noted. Make the characteristics of road construction in the same area similar.

Topic: Special construction scheme for subgrade of expressway Highway subgrade works Contract for subgrade works of expressway
expressway Summary report of subgrade test section
In order to ensure the subgrade filling quality, standardize the subgrade filling construction process and machinery production configuration, in combination with the actual situation of the site, this section is proposed to select 200 meters on the right side of K153+150-K153+350 section as the mountain soil filling subgrade test; 100m to the right of K152+640-K152+740 section is used as the test section for filling subgrade with ordinary soil; 100m on the right side of K152+740-K152+840 section as 3% lime soil for subgrade filling test; The geological conditions and section forms of the three sections of subgrade are relatively representative. The base treatment forms include old road side ditch backfilling with gravel and 3% lime soil replacement. The average height of subgrade filling is 3.2m, the slope ratio of old road is 1:1.5, and the clearing thickness of subgrade is 40cm.

Topic: Expressway construction summary report Construction summary of graded crushed stone cushion test road Construction Scheme for Expressway Works in Rainy Season
expressway Winter construction scheme of subgrade section
Catalog I, Overview 2, Preparation Basis 2, Winter Construction Scheme 2, Construction Preparation 2, Raw Material Control 2, Reinforcement Welding and Tensioning 3, Concrete Mixing and Transportation 3, Concrete Pouring 4, Concrete Curing 5, 7, T-beam Duct Grouting 8, 8 T-beam erection 8 9, temperature observation 8 10, construction safety 8 11, construction environmental protection measures 9 3, winter construction leading group 9 4, concrete thermal calculation 9

Topic: Winter construction scheme of expressway subgrade High speed winter construction scheme Construction Scheme of Asphalt Road
some expressway Subgrade blasting construction organization design document
Our company has accumulated construction experience, existing construction equipment capacity and corresponding management level in the construction of expressways and similar projects for a long time.

Topic: Blasting construction scheme for subgrade of expressway Construction organization design of expressway tunnel Construction organization of expressway tunnel
expressway Operation Instruction for Subgrade Test Section
The x work area of the XXX contract section of Suining Zitong Expressway is 7.683km long, starting at stake k4+700 and ending at stake k12+550. The filling volume of the whole section is about 1766499 m?, Most of them are located in hilly and gully areas such as paddy fields. The maximum filling height is 12.92m. Therefore, subgrade filling construction is one of the key works to ensure the construction quality of this work area.

Topic: Operation Instruction for Engineering Survey Operation Instruction for Waste Gas Treatment Post Technical Instructions for Expressway Construction
expressway Construction scheme of subgrade test section
Construction scheme of subgrade test section, if necessary, welcome to exchange

Topic: Construction Scheme for Test Section of Expressway Construction Scheme of Expressway Subgrade Construction Scheme for Road Subgrade Test Section
Shaanxi and Inner Mongolia expressway Subgrade and pavement deflection result table
Contract section project name, pile number or part inspection date, name of structural layer, design deflection value (0.01mm), coefficient related to the required assurance rate, Z α, temperature correction coefficient, seasonal influence coefficient, measured deflection value (0.01mm) at different pile numbers, position of pile number, average value of measured deflection (0.01mm), standard deviation (0.01mm), representative value of deflection (0.01mm) Disposal opinions for values exceeding L ± () S in the rejection table of deflection specific values

Topic: Construction technology of subgrade and pavement of expressway Specifications for highway subgrade and pavement Specifications for subgrade and pavement
some expressway Detailed construction drawing of subgrade and pavement drainage design cad
This drawing is the detailed construction drawing of subgrade and pavement drainage design cad of an expressway, including the plan, etc. The content is detailed and can be used for reference.

Topic: Subgrade and pavement of expressway Expressway drainage Cad construction drawing of expressway
Somewhere expressway CAD Drawing of Standard Cross Section of Subgrade
This project is a CAD drawing of the standard cross section of the subgrade of a certain expressway, including the cross section. The drawing content is complete, clear and precise, and designers are welcome to download and use it.

Topic: Highway cross section design Road cross section Subgrade cross section
In soft soil area expressway Complete set of cad for subgrade design
This data is a complete set of cad for subgrade design of an expressway in soft soil area, including sand well drawing, powder jet pile, opening report, etc. The design is accurate and conforms to relevant specifications, which can be used for reference and study by designers!

Topic: Highway subgrade design Subgrade and pavement of expressway Expressway subgrade construction
expressway Herringbone protection drawing

Protection drawing of herringbone skeleton of expressway

Topic: Road plant protection Forest skeleton Expressway construction
expressway Complete set of cad drawings for preliminary design of subgrade and pavement, with detailed description

Design basis: Technical Rules for Design and Construction of Gob Roads (JTG/T D31-03-2011); Code for Geological Investigation of Highway Engineering (JTG C20-2011); Detailed Rules for Design of Highway Tunnel (JTG/T D70-2010)

The total length of the route is about 61.374km. Design load: highway Class I. Pavement structure type: main line asphalt concrete, toll station cement concrete. The route corridor belt is relatively developed, with shallow marine carbonate rocks and coastal facies clastic rocks containing coal deposits. Along the project line, there are vertical and horizontal valleys, steep valley slopes, deep valleys and developed water systems; Karst caves, karst depressions, funnels and underground rivers are widely distributed, and there are many sections distributed in soft foundation, landslides, coal and mined out areas, and ore crushing. Subgrade protection is mainly ecological plant protection, supplemented by engineering protection. The design scheme of open ditch with cover plate is recommended for the central separation strip, and grass protection and tree planting are also recommended.

The main forms of cutting slope protection are cutting retaining wall, face protection wall and anchor bolt (cable) shotcrete frame beam hanging three-dimensional net planting grass. Treatment measures for deep excavation slope: anchor frame+face wall; Anchor cable frame+anchor bolt frame+face wall; Cutting retaining wall+anchor cable frame; Cutting retaining wall+arch skeleton; Anchor rod frame+facing wall. Subgrade and pavement drainage mainly includes side ditch, intercepting ditch and drainage ditch.

Profile: the maximum longitudinal slope is 5%, the minimum slope length is 200m, the minimum radius of convex vertical curve is 4500m, and the minimum diameter of concave vertical curve is 3000m. The minimum radius of horizontal curve limit is 250m, and the minimum radius is 400m.

Cross section: highway grade: two-way four lane expressway; Design speed 80km/h; Subgrade width: integral 24.5m, separate 12.25m; The median is 3m wide and the median is 2m wide. The cross slope of roadway and hard shoulder crown is generally 2%, and that of soil shoulder crown is 4%.

... Designed in 2014, 198 CAD, 410 tables, 180 pages of design description

Design Description Page 188 High fill and deep excavation design: Main line high fill subgrade engineering quantity table Comparison line foundation deep excavation subgrade engineering quantity table Comparison line high fill subgrade engineering quantity table C Ⅲ - 3 Main line foundation deep excavation subgrade engineering quantity table Main line left line high fill and deep excavation construction site design drawing 28 Main line right line high fill and deep excavation construction site design drawing 33 Subgrade protection engineering design drawing (anti-collision barrier) Design Drawing of Subgrade Protection Works (Maintenance Steps) Monitoring Design Drawing of Deep Cut Subgrade General Drawing of High Fill and Deep Cut Subgrade Design 7 Bill of Quantities for High Fill and Deep Cut 14 Bill of Quantities for High Fill Subgrade Bill of Quantities for Deep Cut Subgrade

Topic: Subgrade and pavement of expressway Preliminary design of highway preliminary design
A region expressway CAD drawings for design and construction of subgrade and pavement drainage scheme
This data is a CAD drawing for the design and construction of subgrade and pavement drainage scheme of an expressway in a region. The data content includes: expressway engineering plan and other data for reference.

Topic: Subgrade and pavement of expressway Expressway drainage Design Drawing of Expressway Pavement Structure
expressway Construction organization design scheme of subgrade slope protection works along the river
The starting point of the contract section A7 of Tongxin Haiyuan Highway from the provincial highway 103 to the contract section of Haiyuan Highway is K38+500, which is located behind Hejiabao Village, along Zhuangzishang and Miaoergou to Xinzhuang, and then through Wangjiajing, the toll station of the main line is set near Wangjiajing, then Wangjing Bridge is set to connect with Tonghai Road, and the main line with Tonghai Road is set at K46+600, after passing the level crossing, the toll station of the main line is set at the end point, and the old road of Tonghai is expanded along the old road of Tonghai. The end point is level crossing with Heihai Road, and the stake number of the end point of the project is K48+392.523. The total length of the route is 9.893 km.

Topic: Construction Scheme for Expressway Works in Rainy Season Construction organization design of highway subgrade works Construction organization design scheme of a highway project
some expressway Subgrade earthwork construction scheme
Construction Scheme for Subgrade Earthwork of an Expressway Construction Scheme for Subgrade Earthwork of an Expressway Construction Scheme for Subgrade Earthwork of an Expressway

Topic: Construction Scheme for Road Subgrade Earthwork High speed earthwork construction scheme Construction Contract for Earthwork of Expressway