Our interpretations of the many codes and standards in our engineering industry
Per the Aluminum Design Manual (ADM) 2015, the allowable bending stress of round tubes shall be determined for the limit states of yielding, rupture, and local buckling: that given by section F.6.1 (compressive yielding), or that given by section F.6.1 (tensile yielding), or that given by section F.6.1 (tensile rupture), or that given by …
Procedure For Calculating Aluminum Box Beams For Bending Read More »
Per the 2015 National Design Specification for Wood Construction (NDS 2015), section 12.1.4.6, the minimum length of lag screw penetration Pmin not including the length of the tapered tip, E, of the lag screw into the main member of single shear connections and the side members of double shear connections shall be 4D where D …
What’s the minimum penetration for lag screws into wood? Read More »
Per AISC-ANSI-360-16, the minimum edge distance for bolts to the edge of a connected part is to follow the below table J3.4 (inches) AISC/ANSI 360-16 is a free publication from AISC/ANSI Visit Our Pre-Engineered Plans & Evaluation Reports
The answer is yes. According to Section 1709.9.4 of the Florida Building Code 7th Edition (2020): “All Impact-resistant coverings shall be installed in accordance with the manufacturer’s installation instructions and in accordance with the product approval. Installation instructions shall be provided and shall be available to inspection personnel on the job site. Opening protection …
A building is considered “enclosed” if it does not comply with the requirements for open or partially enclosed buildings (ASCE 7-16, Section 26.2, “BUILDING, ENCLOSED”). From the ASCE 7-16 Commentary C26.2 Definitions: BUILDING, ENCLOSED; BUILDING, OPEN; BUILDING, PARTIALLY ENCLOSED; BUILDING, PARTIALLY OPEN: These definitions relate to the proper selection of internal pressure coefficients, (GCpi). “Enclosed,” …
How do I tell if my building is considered “enclosed”? Read More »
A building is considered open if each wall is at least 80 percent open (ASCE 7-16, Section 26.2, “BUILDING, OPEN”). This condition is expressed for each wall by the equation Ao ≥ 0.8 Ag where Ao = total area of openings in a wall that receives positive external pressure, in ft2 (m2) Ag = …
How do I tell if my building is considered an “open building”? Read More »
A building is considered “Partially Enclosed” if it complies with both of the following conditions (ASCE 7-16, Section 26.2, “BUILDING, PARTIALLY ENCLOSED”): the total area of openings in a wall that receives positive external pressure exceeds the sum of the areas of openings in the balance of the building envelope (walls and roof) by more …
How do I tell if my building/enclosure is considered “partially enclosed”? Read More »
The Building Codes in the US reference ASCE-7 for the design of the components and cladding of buildings (26.1.2.2 ASCE 7-10 & ASCE 7-16). Theory Of wind design goes that the smaller the area in consideration, the greater the probability that a maximum burst of wind will occur in that area over any 3 …
While the 1/3 stress increase is all but a memory, this article explains its history & origin. The one-third stress increase has a long history of use in Allowable Stress Design (ASD). It is most commonly used to account for the improbability of two transient loads concurrently acting at their maximum lifetime values– for example, …
The One-Third (1/3) Stress Increase: Where Is It Now? Read More »
First, What is a Notice To Owner (NTO)? This notice alerts a homeowner in Florida that someone has or will provide improvements to their property, either by furnishing services or materials. It puts the owner on legal notice that they now have a responsibility to make certain that that person gets paid, if not, that …
Florida Engineers Do Not Have To File A Notice To Owner To Lien A Property Read More »
Regarding ASCE 7-16 & the 2020 Florida Building Code (FBC) Also Applies for ASCE 7-22 & 2023 Florida Building Code (8th Edition) YES. Section 1609.1.1 and Chapter 35 of the 2020 FBC refer to ASCE 7-16 as the governing code for loading requirements on most rooftop structures*. *Section 1609.5 of the 2020 FBC lays …
Most all products are evaluated using the ASD method (unless noted otherwise). ASD method in, then ASD method out. Among the notable changes in ASCE 7-10 & ASCE 7-16, the wind speed map and the importance factor for wind loads have been replaced with three wind load maps based on difference and newly defined return …
