A practical, field-tested guide to how tower type, body extension, leg extension, and stub setting are really decided on 380kV overhead transmission line projects — aligned with Saudi Electricity Company (SEC) Standards and Project Technical Specifications (PTS). Why 380kV OHTL Tower Selection and Stub Setting Matter On any 380kV Extra High Voltage (EHV) overhead transmission […]
What Are Plan and Profile Drawings in Transmission Lines? Plan and Profile (P&P) drawings are among the most important engineering documents used in the design, construction, operation, and maintenance of overhead transmission lines. They provide a graphical representation of the route and terrain, enabling engineers to determine tower locations, conductor clearances, span lengths, and crossing
Introduction to Transmission Tower Foundation Design Transmission line tower foundations are among the most critical elements in overhead transmission line engineering. Unlike conventional building foundations, transmission tower foundations are subjected to highly variable and extreme loading conditions including compression, uplift, lateral loads, wind forces, and overturning moments. For high-voltage transmission systems such as 380kV lattice
Introduction Deep foundations, particularly pile foundations, play a critical role in the structural integrity and long-term performance of Overhead Transmission Line (OHTL) towers. In projects executed under the Saudi Electricity Company (SEC), deep foundations are widely adopted due to challenging geotechnical conditions such as weak surface soils, high groundwater levels, and severe uplift forces acting
Deep Foundations for OHTL Towers as per Saudi Electricity Company (SEC) Standards Read More »
Abstract Shallow foundations are one of the most commonly adopted foundation systems for Overhead Transmission Line (OHTL) towers, particularly in areas where soil bearing capacity is adequate and uplift forces are within manageable limits. Among shallow foundations, Pad & Chimney Foundations are widely used for suspension and light angle towers due to their simplicity, cost-effectiveness,
Shallow Foundations for Overhead Transmission Line Towers (Pad & Chimney Foundations) Read More »
Abstract Foundations are the most critical structural component governing the safety, stability, and long-term performance of Overhead Transmission Line (OHTL) towers. Acting as the interface between the transmission structure and the supporting soil or rock, foundations ensure that all vertical, horizontal, uplift, and dynamic loads are safely transferred to the ground.This article provides a comprehensive
Structure Spotting in Transmission Line Design — TES-P-122.07 Explained Structure Spotting in Transmission Line Design — TES-P-122.07 Explained Focus keywords: structure spotting, transmission line design, TES-P-122.07, PLS-CADD Length: 1,600+ words · Audience: power systems engineers, OHTL designers, project managers Structure spotting is the critical step that turns survey data and sag analysis into a buildable,
Structure Spotting in Transmission Line Design — TES-P-122.07 Explained Read More »
Basic Stages of an EHV Transmission Line Project When a utility or power-transmission company sets out to build an Extra High Voltage (EHV) transmission line, the project must proceed through multiple well-defined stages. Each stage has its own inputs, deliverables, risks and decision-points. The key basic stages are: The Critical Stage That Is Often Ignored
EHV Transmission Line Survey – Flow Chart & Critical Observations Read More »
Introduction In power transmission and substation projects, the stability and reliability of tower foundations are crucial for long-term structural performance. One of the most important factors influencing this stability is soil compaction. Properly compacted soil increases the bearing capacity, minimizes settlement, and ensures that transmission towers remain stable even under heavy wind and dynamic loading
Introduction Overhead Transmission Line (OHTL) foundations are critical components in the electrical power transmission infrastructure. They support transmission towers and transfer loads to the ground. Due to exposure to harsh environmental conditions, such as moisture, chlorides, sulfates, and aggressive soils, the Saudi Electricity Company (SEC) mandates robust protective coating systems to ensure durability and corrosion
Protective Coating Requirements for OHTL Foundations as per SEC Standards Read More »
