Standard Cinder Block (CMU) Shapes & Sizes Chart: Stretcher, Corner, Sash & Bond Beam
Compare standard concrete block (CMU) shapes and sizes from 4-inch partitions to 8x8x16 stretchers, corners, sash, and bond beam blocks, including nominal vs. actual 7-5/8″ dimensions and 3/8″ mortar joint math.
Heartwood vs. Sapwood in Hardwood Lumber: Color, Rot Resistance & Defect Waste
Compare heartwood vs. sapwood in hardwood lumber across walnut, cherry, white oak, and hard maple. Includes rot resistance ratings, NHLA grading rules, and ripping waste percentages.
No. 1 vs. No. 2 vs. Stud Grade Framing Lumber: Knots, Wane & Structural Use Guide
Compare No. 1 vs. No. 2 vs. Stud Grade softwood framing lumber with our complete knot size, wane allowance, bending strength (Fb), stiffness (E), grade stamp, and structural span guide.
Doyle vs. Scribner vs. International 1/4-Inch Log Rules: Sawmill Yield Comparison
Compare Doyle, Scribner Decimal C, and International 1/4-inch log rules with our 16-foot sawlog yield chart, small-end DIB scaling formulas, bandsaw overrun math, and $/MBF pricing guide.
How Sawmills & Lumber Yards Price Hardwood by MBF (Per 1,000 Board Feet)
Learn what MBF means in lumber pricing (1,000 board feet), how to convert $/MBF sawmill quotes into price per board foot ($/BF) in 5 seconds, and compare 500 BF vs. 1 MBF wholesale bunk discounts.
Kiln-Dried (KD) vs. Air-Dried vs. Green Lumber: Moisture Content & Shrinkage Chart
Compare kiln-dried (6% to 8% MC), air-dried (12% to 15% MC), and green lumber (30% to 80%+ MC) with our complete moisture content chart, 30% Fiber Saturation Point shrinkage formula, and shop acclimation guide.
Plain-Sawn vs. Quarter-Sawn vs. Rift-Sawn Lumber: Grain Stability & Milling Waste
Compare plain-sawn (0°-30° rings), quarter-sawn (60°-90° rings), and rift-sawn (30°-60° rings) hardwood lumber across grain figure, medullary ray fleck, seasonal shrinkage, sawmill waste, and board-foot cost.
Hardwood Lumber Grading Rules (FAS, Select, #1 & #2 Common): Clear-Cutting Yield & Waste %
Complete NHLA hardwood lumber grading rules guide comparing FAS (83.3% clear), F1F, Selects, No. 1 Common (66.7% clear), and No. 2A Common (50% clear) with cutting unit math and shop waste percentages.
S2S vs. S4S vs. Rough-Sawn Lumber: Milling Allowances, Planer Loss & Buying Guide
Compare S2S vs. S4S vs. rough-sawn hardwood lumber (plus Hit-or-Miss, S3S, and SLR1E) with exact NHLA milling allowances, planer thickness loss, width rip loss, and board foot cost tables.
Nominal vs. Actual Lumber Sizes Chart (Why a 2×4 Measures 1.5″ x 3.5″)
Complete nominal vs. actual lumber sizes chart for 1x boards, 5/4 decking, 2×4 to 2×12 framing lumber, and 4×4 to 6×6 posts, plus why a 2×4 measures 1.5″ x 3.5″ under DOC PS 20 standards.