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Design and Construction Considerations for Foundations of Overhead Transmission Line (OHTL) Towers

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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 […]

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Structure Spotting in Transmission Line Design — TES-P-122.07 Explained

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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,

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EHV Transmission Line Survey – Flow Chart & Critical Observations

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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

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Nuclear Soil Compaction Test for Transmission Tower Foundations According to SEC Standards

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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

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Protective Coating Requirements for OHTL Foundations as per SEC Standards

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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

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KML vs KMZ: Why KMZ Files Are Essential for OHTL Plan & Profile Submissions

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If you work with GIS data in the power or infrastructure sector, especially for Overhead Transmission Line (OHTL) projects, you’ve likely come across KML and KMZ files. Though similar, these file formats serve very different purposes. This article explains: What is the Difference Between KML and KMZ? KML (Keyhole Markup Language): KMZ (Zipped KML): In

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Concrete Mix Design C38+MS for Overhead Transmission Line (OHTL) Structures

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Introduction Concrete is the backbone of any construction, especially high-voltage overhead transmission line (OHTL) structures. For foundations, poles, and towers, the strength and durability of concrete are critical. C38+MS concrete is a high-strength mix enhanced with micro silica (MS) to achieve superior compressive strength, durability, and chemical resistance. This article provides a detailed technical guide

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Access Road Construction in Overhead Transmission Lines (OHTL): Subgrade, Sub-base & Surface Course Requirements

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Keywords: Access Road in OHTL, OHTL access road construction, subgrade CBR requirements, SEC standard TES-P-122.11, sub-base layer, surface course, civil works for transmission lines, access road layers, road compaction standards What is an Access Road in OHTL Projects? An Access Road in Overhead Transmission Line (OHTL) projects is a specially designed route that enables the

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BBS and Concrete Volume Calculations for Pier Foundations in Overhead Transmission Line (OHTL) Projects

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Introduction In Overhead Transmission Line (OHTL) projects, pier foundations are commonly used in river crossings, steep terrain, or rocky soil conditions. Accurate Bar Bending Schedule (BBS) and Concrete Volume Calculations ensure the foundations are structurally sound, cost-effective, and executed with precision. This guide provides: BBS (Bar Bending Schedule) for Pier Foundation Why Prepare BBS? Step-by-Step

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What is California Bearing Ratio (CBR) in OHTL Foundation Design?

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Understanding California Bearing Ratio (CBR) in Overhead Transmission Line Projects When designing overhead transmission lines (OHTLs), one of the most critical steps is ensuring the soil can safely bear the load of transmission tower foundations. The California Bearing Ratio (CBR) test is a widely used method to evaluate this. What is CBR? CBR stands for

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