Pier and Beam Foundation: How It Works, Pros, Cons and Repairs
Pier and beam foundations explained: how piers, beams and joists carry a house, how they compare with a slab, crawl space vent rules, problems and repairs.
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Types of Welding: 7 Processes Explained and When Each Is Used
The 7 main types of welding explained: stick, MIG, flux-cored, TIG, submerged arc, gas and spot welding, with a comparison table and which are used on steel.
Is Stainless Steel Magnetic? It Depends on the Grade (Here’s Why)
Is stainless steel magnetic? 304 and 316 are not when annealed, but ferritic, martensitic and duplex grades are. Why cold work and welds change the answer.
Ceiling Joists Explained: Sizes, Spans, Spacing and What They Hold Up
Ceiling joists carry the ceiling and tie the rafters so walls cannot spread. See AWC span tables for 2×4 to 2×10, load cases, spacing and warning signs.
What Is Galvanized Steel? How the Zinc Coating Works (and G90 Explained)
Galvanized steel is carbon steel coated in zinc to stop rust. How hot-dip and sheet galvanizing work, what G90 means, and where galvanized steel fits best.
What Is a Header in Construction? Door and Window Headers Explained
A header is the beam over a door or window opening. Learn the parts of a framed opening, how to read a header span table, and when a wall needs no header.
What Is Steel Made Of? Iron, Carbon and the Alloys That Change It
What is steel made of? Iron, under 2% carbon and about 1% manganese, plus alloys like chromium and nickel. How it is made in the US and what each element does.
What Temperature Does Steel Melt? (And Why Fire Weakens It Long Before)
Steel melts at about 2,800°F (1,500°C), but fire weakens it far sooner. Melting point vs fire temperatures, why the WTC steel did not melt, and fire protection.
What Is Mild Steel? Properties, Grades and Uses Explained
Mild steel is low-carbon steel with about 0.05 to 0.25% carbon. See its properties, the real grades behind the name, common uses, and when to specify A36.
Is Titanium Stronger Than Steel? The Answer Depends on the Grade
Is titanium stronger than steel? Compare real ASTM grades: yield strength, strength-to-weight, stiffness, cost and corrosion, and why buildings still use steel.