Porosity – How ‘Open’ A Surface Is – Explained The porosity of open structures is defined in ASCE-7 standard under ‘open signs’ (chapter 29, as of ASCE 7-22). This standard explains that the permeable (wind) porosity of a surface isn’t always equivalent to the calculated visual porosity. Left: mechanically articulating louvers that can reach a …
How To Calculate Porosity of a Louver – Sign – Fence Per ASCE 7 Read More »
Wind Exposure Category Overview ASCE-7 is the governing referenced standard for design loads on buildings & other structures for building codes throughout the US. ASCE 7 (26.7 of ASCE 7-16) describes the process to which wind speed is converted into wind pressure to design such structures. The formula is based on many variables. One of …
ASCE 7 WIND EXPOSURE CATEGORIES AND HOW EXPOSURE ‘D’ WORKS Read More »
A canopy is an overhead structure that offers protection from weather elements like rain, snow, and sunlight. Canopies can come in various types and configurations, whether attached to an existing building or standing independently on their own supports. With materials ranging from steel and concrete to aluminum, wood, or fabric, the design possibilities are extensive. …
Understanding Canopies: Design and Load Considerations Read More »
ASCE 7 separates wind loading into three types: Main Wind Force Resisting System (MWFRS), Components and Cladding (C&C), and Other Structures and Building Appurtenances. MWFRS is defined as “(a)n assemblage of structural elements to provide support and stability for the overall structure.” Typically, members that receive loading from two surfaces are designed to resist MWFRS …
ASCE 7 Main Wind Force vs. Components & Cladding Explained (MWFRS vs. C&C) Read More »
There is often confusion as to which size product a client actually needs – Pipe Size or OD Tubing Size. Keep in mind that pipe size refers to a nominal – not actual – inside pipe diameter. Schedule refers to the pipe’s wall thickness. The dimensions provided for OD tubing on the other hand refer to the actual …
What’s the dimensional difference between a pipe and a tube? Read More »
