WHY BEAM-COLUMN JOINTS ARE SPECIAL In RC buildings, portions of columns that are common to beams at their intersections are called beam-column joints (Figure 1). Since their constituent materials have limited strengths, the joints have limited force carrying capacity. When forces larger than these are applied during earthquakes, joints are severely damaged. Repairing damaged joints […]

The World’s Largest Floating Solar Plant

Long reviled for its carbon emission record, this is the Chinese government’s latest achievement in its ongoing effort to lead the world in renewable energy adoption. 40 MW Floating Solar Power Plant in China becomes World’s Largest Floating PV Plant Located in the city of Huainan in the Anhui province, the 40-megawatt facility was created […]

Early Corrosion Detection in Prestressed Concrete Girders Using

Corrosion of prestressing strands in prestressed RC girders can significantly reduce their load bearing capacity. This will increases the risk of failure, as well as cost of repair and retrofit. In this brief note, we explore the main reasons behind corrosion in prestressed girders, effective evaluation techniques, and available repair methods and techniques. Prestressed Girders […]

Signs of Poorly Vented Plumbing Drain Lines

Poorly vented plumbing drain lines are often problem to many homes (Signs of Poorly Vented Plumbing Drain Lines). People notice some changes when the water flows but they often do not take it seriously and the problem becomes even bigger. The bubbles in the toilet or sudden water level changes in the toilet bowl are […]

Concrete Mix Design for M40 Grade

Concrete Mix Design for M40 Grade Design a concrete mix for M 40 grade using fly ash with the following data: (a) Type of cement: OPC 43 grade (b) Type of mineral admixture: Fly ash conforming to IS: 3812 (Part-l) (c) Maximum nominal size of Aggregate: 20 mm (d) Minimum cement content: 320 kg/ m3 […]

Concrete Floor Heating

Concrete floor heating  Why floor heating? With traditional central heating, air heated by the radiators rises.The result is that the hottest part of the room is the ceiling and the coldest is the floor, where the heat is actually needed.This is both very inefficient and wasted but also uncomfortable to the body.Warm head and cold […]

Methods of Waterproofing concrete and Advantages

Methods of Waterproofing concrete and Advantages In general, it can be stated that if concrete is made dense and free from cracks, it is watertight. The dense concrete can be obtained by closely adhering the following essentials: Using a hight class Portland cement of guaranteed quality. Taking extreme care to adopt correct grading and proportioning […]