Hollow Structural Sections (HSS) and Solid Sections are steel construction products used in the framework of buildings. HSS are hollow, tubular sections typically constructed from thin walls made from steel. These sections are then welded or riveted to form a structural frame for buildings. On the other hand, Solid Sections are solid steel bars made from thicker walls.
Why are hollow sections stronger than solid ones?
Hollow sections are often used in structural applications for their lightweight and strength.
Despite reducing weight, hollow sections perform significantly better resisting applied loads than solid sections. This is due to the wall’s length-to-thickness ratio, which contributes to its overall surface area of resistance.
In simpler terms, due to the increased contact area spread over a considerable length, hollow sections can dissipate the stresses and strains more efficiently than solids, which rely solely on their thickness for strength.
The larger area provides excellent reinforcement with additional material or insulation if necessary, offering added protection that solid bars do not offer.
What are the advantages of hollow sections?
Hollow sections could provide a lightweight yet the structural solution to building projects since they are made of hollow yet highly durable metal tubes or pipes.
An exceptionally high load can be supported with fewer materials, saving money and time in the process. Furthermore, these tubes are excellent thermal conductors as they provide improved insulation performance even in extremes of temperature from hot to cold.
Consequently, hollow sections reduce heating and cooling costs and offer greater energy efficiency — a vital consideration for any building project.