RTB eLearning

Constructing a roof structure is a critical phase in building construction that provides protection, stability, and architectural character to a structure. A well-designed roof not only shields the interior from environmental elements like rain, wind, and sunlight, but also contributes to the overall durability and energy efficiency of the building. Roof construction involves careful planning, selection of appropriate materials, and adherence to structural design principles to ensure safety and functionality. Depending on the design and purpose of the building, roofs can vary in shape and complexity—from simple flat roofs to intricate pitched or gabled forms. Key components such as trusses, rafters, beams, and decking must be precisely assembled to support the roof covering and distribute loads evenly. Successful roof construction requires coordination between architects, engineers, and builders, ensuring the structure meets both aesthetic and structural standards.

Ruminants are essential to livestock farming, especially in regions like Rwanda where they contribute significantly to food security, income generation, and sustainable agriculture. Each breed of cattle, goat, and sheep has unique characteristics that determine its suitability for meat, milk, fiber, or labor production. Identifying these breeds accurately is the first step toward effective farm management and breeding programs.

1. SMAW on Aluminum

• Overview: Lightweight, highly conductive; difficult to weld due to oxide layer.

• Electrodes: 4043, 5356 (AC).

• Key Points: AC current needed, preheat thick sections, avoid excessive heat to prevent burn-through.

• Applications: Repairs and maintenance when TIG is not available.

2. SMAW on Stainless Steel

• Overview: Corrosion-resistant, retains high-temperature strength.

• Electrodes: 308L, 309L, 316L.

• Key Points: Low heat input, clean surfaces, multi-pass for thick sections.

• Applications: Chemical, food processing, and construction industries.

3. SMAW on Cast Iron

• Overview: Brittle, high carbon; prone to cracking.

• Electrodes: Nickel-based (ENi-CI, ENiFe-CI).

• Key Points: Preheat 300–600°C, slow cooling, mostly for repair work.

• Applications: Repairing machinery, engine blocks, pipes

A SolidWorks design is a power full 3D CAD software design for mechanical parts, assemblies, and engineering drawings. It covers essentials like sketching, modeling, and drawing, plus advanced topics such as surface modeling and large assembly management. By the end, you will gain practical skills to create production-ready designs and optimize workflows in engineering and manufacturing.

SOLIDWORKS Design is a computer-aided design (CAD) software used to create, simulate, and visualize 2D and 3D models of products or mechanical parts. It allows engineers, designers, and manufacturers to design complex components, assemblies, and drawings with precision and efficiency. The software provides tools for sketching, modeling, rendering, and analysis, enabling users to test product performance, optimize designs, and prepare accurate technical documentation before production.

This module encompasses all methodologies necessary to guide you to deliver the module titled: Steel bar works. Students undertaking this module shall be exposed with practical activities that will develop and nurture their competences. The writing process of this training manual embraced competency-based education and training (CBET) philosophy by providing practical opportunities reflecting real life situations.

The module is subdivided into outcomes, each unit has various indicative contents, and you will start by guiding a self-assessment exercise to help students rate themselves on their level of skills, knowledge, and attitudes about the unit.

The module will give you the information about the objectives, learning hours, didactic materials, and proposed methodologies.

This module  will give you tips, methodologies, and techniques about how to facilitate students to undertake different activities as proposed in their trainee manuals. The activities in this module  are prepared such that they give opportunities to students to work individually and in groups.

After going through all activities, you shall help students to undertake progressive assessments known as formative.

           INTRODUCTION 

Terrazzo is a composite material that originated in Italy during the 15th century. It typically consists of chips of marble, quartz, granite, or glass mixed with a cement or epoxy binder. The word “terrazzo” comes  from the Italian word for terrace, as the original technique was used to create durable and decorative flooring in outdoor spaces