6 IMPORTANT ENGINEERING PROPERTIES OF MORTAR

PROPERTIES OF MORTAR Properties of mortar which are sought for use in masonry are: workability, water retentivity, rate of stiffening, strength, resistance to rain penetration and durability. These properties have been discussed below explaining their effect on masonry. Choice of masonry mortar is governed by several considerations such as Type of masonry unit and its […]

6 METHODS TO PREVENT DAMPNESS IN BUILDING

DAMPNESS PREVENTION METHODS: The following are the precautions to be taken to prevent dampness in buildings, before applying the various techniques. The site should be located on high ground and well-drained soil to safe guard against foundation dampness All the exposed walls should be of sufficient thickness to safeguard against rain protection (minimum 30 cm) […]

DIFFERENT TYPES OF DEFECTS IN TIMBER

TYPES OF DEFECTS IN TIMBER Types of Defects in timber are grouped into the following divisions. 1. DEFECTS DUE TO CONVERSION During the process of converting timber to commercial form, the following defects may occur. Chip mark: mark or sign placed by chip on finished surface of timber Diagonal grain: Due to improper sawing of timber Torn grain: Due […]

HOW BEAM COLUMN JOINTS RESISTS EARTHQUAKES?

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 […]

How to build a real nice Heb Spiral.

Basically, the idea behind them is to get in a confined area as many different herbs as possible. The spiral and the subsequent height differences mean that you create a number of different environmental conditions which wouldn’t normally be possible in a small space. The small area also means that they are ideal for a […]