Pronunciation: [pˈɜːlɪn] (IPA) 
The word "Purlin" is spelled as "ˈpɜːrlɪn" using IPA phonetic transcription. The "p" and "l" are pronounced as usual, but "ur" is pronounced as "er" in "her." The "i" is pronounced as "ih" in "it," and the final "n" is pronounced as "n" in "no." A purlin is a horizontal, structural element in a roof construction that spans between trusses or rafters, supporting the roof covering and transferring the loads to the primary structure.
A "purlin" is a horizontal structural component that is used in construction to support the roof or upper section of a building. It is typically made of wood, steel, or concrete and is positioned parallel to the main roof rafters or trusses. Purlins are installed perpendicular to the main roof framing, spanning between the roof trusses or rafters, and are fixed in place to provide additional support and stability.
The primary function of purlins is to distribute the weight and load of the roof evenly across the supporting structure, preventing any sagging or structural damage. They help to strengthen the roof system and provide a base for roof coverings such as roofing sheets or tiles to be securely attached. Purlins also serve as a means of transferring the loads from the roof to the walls or columns of the building.
Purlins come in various shapes and sizes depending on the specific construction requirements. Common types include "Z" purlins, which have a zigzag shape, and "C" purlins, which have a C-shaped cross-section. These different designs offer varying levels of strength and rigidity to meet the structural demands of different buildings. Purlins are an essential component in the overall stability and integrity of a roof structure, ensuring that it can withstand the imposed loads and environmental conditions.
In carpentry, one of the pieces of timber that lie across the rafters on the inside to keep them from sinking in the middle.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "purlin" originates from the late Middle English term "purlyng" or "pervelyng" which came from the Old French word "porreler" or "porrelier". Ultimately, it can be traced back to the Latin word "porrectum" meaning "to stretch out" or "to extend". In the context of construction and architecture, "purlin" refers to a horizontal structural member used to support the roof or floor of a building.
