News and Articles

100 articles on construction, project management and ORPA GRUP. Infrastructure, DSI, TISKI, safety and more. Articles are listed below; use the page numbers for other pages.

Subcontractor and Supplier Management in Construction
07 December 2025 Construction

Subcontractor and Supplier Management in Construction

Subcontractor selection, contracts and coordination.…

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Traffic Management and Safety in Road Projects
03 January 2024 Security

Traffic Management and Safety in Road Projects

Traffic control, signing and safety in road construction.…

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Ecological Balance in DSI Stream Rehabilitation
14 August 2024 DSI

Ecological Balance in DSI Stream Rehabilitation

Ecological approach, planting and habitat in stream rehab.…

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Pressure Reducing Valve and Valve Selection in Water Lines
22 May 2025 TISKI

Pressure Reducing Valve and Valve Selection in Water Lines

PRV, valve types and water network equipment.…

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Precast Panel and Wall Element Quality Control
15 January 2025 Construction

Precast Panel and Wall Element Quality Control

Precast production, quality control and installation.…

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Dust and Noise Control on Earthwork Sites
13 October 2024 Excavation

Dust and Noise Control on Earthwork Sites

Dust and noise reduction, environment and worker health.…

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Design Flow in Wastewater Collector Lines
02 May 2025 Infrastructure

Design Flow in Wastewater Collector Lines

Collector flow, section selection and slope criteria.…

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ORPA GRUP Contact and Quote Request
22 December 2025 Corporate

ORPA GRUP Contact and Quote Request

Contact ORPA GRUP, project quotes and cooperation.…

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Quality Assurance and Audit in Construction
16 May 2024 Construction

Quality Assurance and Audit in Construction

QA plan, audit and documentation requirements.…

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DSI Hydraulic Structures and Weir Design
09 January 2025 DSI

DSI Hydraulic Structures and Weir Design

Weir types, hydraulic calculations and design criteria.…

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Local Conditions for Trabzon Road and Infrastructure
13 August 2024 Regional

Local Conditions for Trabzon Road and Infrastructure

Regional conditions for road and DSI projects in Trabzon.…

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Effluent Quality in Sewage Treatment Plants
16 November 2025 Treatment

Effluent Quality in Sewage Treatment Plants

Effluent parameters, discharge standards and monitoring.…

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