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Calculator Collection

Structural Beam Load Calculator vs Deck Joist Spacing Calculator

Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.

Civil

Structural Beam Load Calculator

Estimate the load-bearing stiffness of a simply supported structural beam based on its span, cross-section, and material. Use this when sizing floor joists, headers, or steel beams for construction projects.

Answers
Maximum Uniform Load (lbs/ft)
Inputs
Beam Length, Moment of Inertia, Elastic Modulus, Support Type
Construction

Deck Joist Spacing Calculator

Calculates the number of joists needed across a deck's width based on the on-center spacing. Use this when planning deck framing to ensure structural adequacy and code compliance.

Answers
Number of Joists Needed (joists)
Inputs
Deck Width, Joist Size

At a glance

Structural Beam Load CalculatorDeck Joist Spacing Calculator
CategoryCivilConstruction
AnswersMaximum Uniform LoadNumber of Joists Needed
Inputs42
Result unitlbs/ftjoists

When to use each

Estimate the load-bearing stiffness of a simply supported structural beam based on its span, cross-section, and material. Use this when sizing floor joists, headers, or steel beams for construction projects.

Calculates the number of joists needed across a deck's width based on the on-center spacing. Use this when planning deck framing to ensure structural adequacy and code compliance.

Compare page seeded from editorial siblings — both calculators list each other as related.