Is Rebar Galvanized? Black Bar vs Galvanized Rebar
Most rebar is not galvanized. How to tell black bar from galvanized rebar, when zinc coating is worth it, whether galvanized rebar rusts, and what Grade 60 means.
Lap Length and Splice Zones for Beam and Column Rebar
Where to lap beam and column rebar and how long the laps are under CSA A23.3: top and bottom bar splice zones, column laps above the floor, and seismic limits.
Lap Splice and Development Length for Epoxy-Coated Rebar
How epoxy coating lengthens lap splices and development length under CSA A23.3, when the factor is 1.2 or 1.5, a worked lap chart, hooks and couplers on coated bar.
Maximum Rebar Spacing: What CSA A23.3 Allows
The maximum and minimum rebar spacing CSA A23.3 and A23.1 allow in slabs, plus the separate limits for beams, column ties and stirrups, with worked numbers.
Minimum Clear Spacing Between Rebar in Beams
Minimum clear spacing between beam bars under CSA A23.1, compared with ACI 318 and Eurocode 2, with minimum beam widths for 2 to 6 bars and how layers work.
Rebar Area and Spacing Table for Metric Bars
Steel area per metre width for 10M to 35M rebar at spacings from 100 to 500 mm, how to read it, equivalent bar and spacing swaps, and a worked slab example.
Rebar Area Chart: Cross-Sectional Area by Bar Size
Cross-sectional area of Canadian rebar from 10M to 55M in mm² and in², the area of 1 to 10 bars, and how to use bar area to check a beam, column or substitution.
Rebar Chair Height for 4 and 6 Inch Slabs
What height rebar chairs to use in a 4 inch or 6 inch concrete slab: the formula, worked heights for 10M and 15M grids, and picking chairs for slabs on grade.
Rebar Chair Spacing and Placement
How far apart rebar chairs should be, how many chairs per square metre or square foot, a spacing chart, a worked count for a slab, and how to place chairs.
Rebar Code Requirements in Ontario: CSA A23 and OBC
Which codes govern rebar in Ontario: the 2024 OBC, CSA A23.1, A23.3 and G30.18, what Part 9 actually requires for houses, and where to find the real numbers.
Rebar Cost per Foot: How Per-Foot, Per-Stick and Per-Tonne Prices Compare
How rebar cost per foot and per 20 ft bar relates to per-tonne pricing, with metric bar weights per foot and a worked example of estimating linear feet.
Rebar Couplers vs Lap Splices: Types and When to Use Each
Rebar couplers vs lap splices: the types of mechanical couplers, welded splices, what the codes require, what drives coupler cost and when each method makes sense.
Rebar Development and Embedment Length Explained
What development length and embedment length mean for rebar, how CSA A23.3 sets them for straight, hooked and compression bars, and a 10M to 35M chart.
Rebar Diameter With Ribs: Nominal vs Actual Size
Rebar's nominal diameter does not include the ribs. What nominal means, why bars measure bigger over the ribs, why rebar is ribbed, and when real size matters.
Rebar Grades in Canada: 400W vs 500W Explained
Canadian rebar grades under CSA G30.18: what 400W, 500W and the R grades mean, yield and tensile strength, markings, and how they compare to US Grade 40 and 60.
Rebar in Concrete Beams: Placement Basics
Where rebar goes in a concrete beam: bottom and top bars, stirrups, cover, bar spacing and layers, supporting the cage, tie beams and what to check before the pour.
Rebar Lap Splice Length Chart for Metric Bars
Lap splice lengths for 10M to 35M rebar worked out from the CSA A23.3 simplified method, with every assumption stated, plus what changes the lap on your job.
Rebar Mesh Price: What Affects the Cost of Wire Mesh and Rebar Mats
What drives rebar mesh price: wire size and spacing, sheets vs rolls, coatings, laps, freight and placing. Learn how to read mesh designations and compare quotes.