Type: Pedestrian transport infrastructure
Construction method: Cut-and-cover (open-cut)

Key technical parameters

• Top of the roof depth: 1.8 m below ground level
• Total length: 119.35 m
  • Main tunnel: 88.4 m
  • Northern stairs: 14.6 m
  • Southern stairs: 16.35 m
• Clear internal width: 4.00 m
• Section (dimensions):
  • External: 4.76 m (W) × 3.30 m (H)
  • Internal clear height: 2.30 m
• Operational capacity: pedestrian flow up to 600 people/hour
• Mixed-use areas: technical rooms (switchboard, lift equipment)

Challenge

The primary complexity was delivering construction works in a dense urban environment at a major highway intersection. Key constraints and risks included:

• High groundwater levels (flood-prone conditions) and potential for utility leakage
• Complex ground conditions, including technogenic (man-made) soils and frost heave risk

Scope of work

• Architectural and structural design delivery
• LOD 350 BIM model
• BOQ (Bill of Quantities)
• Architectural and structural drawings

Client: NDA
Location: NDA (urban area)

#Pedestrian_Pathway #Concrete_structures

Type: Urban rail (metro) infrastructure
Construction method: TBM (tunnel boring machine), Chamber (Cut-and-cover)

Key technical parameters

• Maximum depth: 5.6 m below ground level (mounting chamber/pit)
• Total length: 22.085 m
• Clear internal width: 20.83 m
• TBM configuration: TBM OD 6.0 m; two single-track running tunnels
• Section (dimensions):
  • Overall: 18.57 m (W) × 6.67 m (H)
• Operational mode: Metro traffic, double-track service (two single-track bores)

Challenge
The primary complexity was limiting geotechnical influence on third-party assets in a dense urban environment. Key constraints and risks included:

• Existing multi-storey residential buildings and tram tracks within the influence zone
• High-density urban construction conditions and sensitive underground utilities
• The key requirement was to prevent structural damage to third-party assets and ensure safety during excavation

Scope of work
Structural design delivery. Deliverables included:

• LOD 350 BIM model (Including 3D Reinforcement)
• BOQ (Bill of Quantities)
• Structural design drawings

Client: NDA
Location: NDA (urban area)

#Metro #Strucure_Chamber #Concrete_structures #Reinforcemet

Type: Drawing preparation automation for manufacturing data

Key technical parameters

• Technological stack: C#, AutoCAD .NET (Core) 8.0, .NET API
• Software: Autodesk Autocad

Task

• Task focus: Extract the outer closed contour of parts from DWG files and automatically clean drawings
• Cleaning rules: Remove unnecessary elements (dimensions, leaders, hidden lines) according to client-defined rules

Challenge
The primary complexity was reliably extracting the correct outer closed contour from DWG files and cleaning drawings that contained many overlapping or near-duplicate “rubbish” lines. Key constraints and risks included:

• The need to remove annotations and hidden geometry while preserving the correct manufacturable contour
• Client-specific rules required for correct line selection in dense and noisy drawings

Scope of work
Key Deliverables:

• A compiled AutoCAD plugin featuring a custom Ribbon Tab with two primary function buttons
• A “Quick User Guide” providing clear documentation for installation and operation.
  

Simplified user experience:
The intuitive two-button interface provides a powerful automation tool that is simple for any user to operate without extensive training, ensuring rapid adoption and immediate productivity gains.

Increased efficiency: By automating repetitive manual tasks, the plugin dramatically reduces the time required to prepare each drawing for manufacturing. What once took significant manual effort can now be accomplished in just a few clicks.

Improved consistency: The automation ensures that every drawing is processed using the exact same rules. This eliminates the risk of human error and inconsistency, leading to higher quality and more reliable manufacturing data.

#Bridge #Steel_structures

Type: Pedestrian transport infrastructure
Construction method: Closed method tunnel under pipe umbrella; service buildings and vertical transport tower by open-cut method

Key technical parameters

• Ground to crown depth: 2.0 m (min. distance from rail foot to pipe screen);
• Total length:
  • VPP No. 1: 27.10 m
  • VPP No. 2: 48.02 m
• Clear internal width: 4.00 m
• Section (dimensions):
  • Internal: 4.0 m (W) × 2.3 m (H)
  • Slab/walls: 0.4 m
  • Cover: 0.41–0.45 m
• Operational capacity: passenger traffic intensity up to 600 people/hour
• Mixed-use areas: technical rooms (switchboard, elevator equipment)

Challenge

The primary complexity was delivering construction works requiring coordination for an underground crossing under active railway infrastructure. Key constraints and risks included:

• Multi-discipline coordination for crossing Tracks II and IV
• Integration of the vertical transport tower and 9 service rooms within limited space and clearance requirements
• Construction under live rail traffic

Scope of work

• Architectural and structural design delivery
• LOD 350 BIM model
• BOQ (Bill of Quantities)
• Drawings (Architectural and Structural design, Electrical, Ventilation, Drainage)

Client: NDA
Location: NDA (urban area)


#Pedestrian_Pathway_2 #Concrete_structures