What Is Tensile Strength? Meaning, Steel Values and How It Is Tested
Tensile strength is the peak stress steel takes before it breaks. See values for A36, A992 and A572, how it differs from yield, and how ASTM E8 tests it.
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Metal Stud Sizes Chart: How to Read 362S162-33
Metal stud sizes decoded: web depth, style letter, flange width and mil thickness. Full mils to gauge conversion table, standard depths, and the 33 vs 50 ksi trap.
Unistrut Sizes: P1000 Strut Channel Dimensions and Load Capacity
Unistrut sizes explained: P1000 is 1-5/8 in square in 12 gauge. Full section properties, uniform load by span, the P1000 and P1001 part numbers, and what each finish suffix means.
Bolt Torque Chart: Why Structural Bolts Are Not Torqued to a Number
A bolt torque chart is not valid for structural steel: the spec is tension in kips. Minimum pretension for A325 and A490, plus where torque does belong.
Lally Columns Explained: Sizes, Capacity and When to Replace One
What a lally column is, how fixed columns differ from adjustable jack posts, what really governs capacity, and the signs a basement column needs replacing.
Diamond Plate Thickness, Sizes and How to Order It
How steel diamond plate is measured and sold, what ASTM A786 covers, common thicknesses, steel versus aluminum tread plate, and what to specify when ordering.
Moment Connection vs Shear Connection: What Actually Changes
How a moment connection transfers bending into a column, why it needs continuity plates, the main connection types, and what Northridge changed about welding.
Weathering Steel (Cor-Ten): Where It Works and Where It Fails
How weathering steel forms its protective patina, the exposures FHWA says to avoid, the detailing rules that come with it, and how it compares to galvanizing.
Castellated Beams: How Cutting a Web Makes a Deeper Beam
How castellated and cellular beams are cut and rewelded to gain depth without weight, what governs their design, and when they are worth the fabrication cost.
Bar Joists Explained: How Open Web Steel Joists Work
What a bar joist is, how open web steel joists carry load, how to read a designation like 18K4, joist vs steel beam, and OSHA bridging rules for erection.