Radius of Gyration: Formula, Meaning and Worked Example
The radius of gyration is a single length that describes how the area of a cross-section, or the mass of a body, is spread…
Journal
Mass Moment of Inertia: Formulas and Worked Examples
The mass moment of inertia measures how hard it is to change the rotation of a body about an axis. It plays the same…
Rectangular Hollow Section, SHS and CHS: An Engineer’s Guide
A rectangular hollow section (RHS) is a closed steel tube with a rectangular cross-section, one of a family of hollow structural sections that also…
Universal Beam and Column Sections (UB and UC) Explained
A universal beam (UB) is a hot-rolled steel I-section with parallel flanges, produced in a standard range of sizes and used for beams in…
Risk Assessment Construction: Method and Singapore Rules
Every construction activity carries hazards: work at height, lifting, excavation, hot work, electricity, moving plant. A risk assessment construction teams carry out properly identifies…
Construction PPE: What Workers Need and Why It Matters
Personal protective equipment is the most visible part of site safety: the helmet, boots and vest that everyone on a building site wears. Construction…
Fire Pump Systems in Buildings: How They Work and Why
A fire pump is the heart of a building’s water-based firefighting systems. When sprinklers open or firefighters connect to a hydrant or rising main,…
Fire Shutter Explained: Types, Operation and SCDF Rules
A fire shutter is a fire-resisting curtain that stays rolled up or retracted in normal use and closes automatically when a fire is detected.…
Box Culvert Design: Structure, Hydraulics and Installation
A box culvert is a rectangular reinforced concrete tube that carries water, and sometimes people or services, beneath a road, railway, embankment or development.…
Gabion Wall Design: How Stone-Filled Baskets Retain Soil
A gabion wall is built from wire mesh baskets filled with stone and stacked to form a retaining wall, a revetment or a free-standing…
Types of Mortar in Construction: Cement Mortar and More
Mortar is the paste that binds bricks and blocks, beds tiles, forms renders and repairs concrete. Of all the types used on site, cement…
House Wrap and Breather Membranes: How They Work in Walls
A house wrap, or breather membrane, is a thin sheet fixed to the outside of a framed wall or roof, behind the cladding. Its…