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TRUSS.CALC
EST. 2011 · REV 4.2.1
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◇ ROOF TRUSS CALCULATORSPANS 10–60 FTPITCH 1/12 – 12/12IRC 2021 COMPLIANTLUMBER BOM + CUT LISTLIVE COST ESTIMATE◇ FREE FOREVERUSED BY 42,000+ CONTRACTORS◇ ROOF TRUSS CALCULATORSPANS 10–60 FTPITCH 1/12 – 12/12IRC 2021 COMPLIANTLUMBER BOM + CUT LISTLIVE COST ESTIMATE◇ FREE FOREVERUSED BY 42,000+ CONTRACTORS
§09 // FIELD GUIDE

Technical
Field Articles.

Practical guides on truss types, roof pitch, installation, lumber selection, permit requirements, and cost estimation — written for contractors, builders, and owner-builders.

ARCHIVE STATS
ARTICLES12
CATEGORIES1
UPDATEDAPR 2026
COVERAGEIRC 2021
Truss TypesRoof PitchSpacingCostDIY vs ProRaftersSpan CalcMistakesLumberPermitsInstallationDesign Loads
Diagram: Roof Truss Types: Fink, King Post, Scissor, HoweART. 01
constructionDec 15, 2025FEATURED

Roof Truss Types: Fink, King Post, Scissor, Howe

Compare the five most common roof truss types: Fink, King Post, Queen Post, Howe, and Scissor. Pick the right design for your span, budget, and ceiling needs.

READ ARTICLE ▸EST. 7 MIN READ
ALL ARTICLES — 11 REMAINING
ART.02CONSTRUCTION

Roof Pitch Guide: How Slope Affects Truss Design

Learn how roof pitch affects truss height, rafter length, material costs, and code requirements. Includes a pi…

Dec 22, 2025READ ▸
ART.03CONSTRUCTION

Truss Spacing: 16-Inch vs 24-Inch vs 48-Inch

Which truss spacing is right for your roof? This guide compares 16-inch, 24-inch, and 48-inch on-center spacin…

Jan 6, 2026READ ▸
ART.04CONSTRUCTION

How Much Do Roof Trusses Cost in 2026?

A builder's breakdown of roof truss costs in 2026, including per-unit pricing, delivery, installation labor, a…

Jan 13, 2026READ ▸
ART.05CONSTRUCTION

DIY vs Pre-Built Trusses: When to Build Your Own

Thinking about building your own roof trusses? This guide covers when DIY makes sense, the real cost savings, …

Jan 20, 2026READ ▸
ART.06CONSTRUCTION

Roof Trusses vs Rafters: Which Is Better?

Trusses vs rafters: a practical comparison for residential construction covering cost, attic space, installati…

Jan 27, 2026READ ▸
ART.07CONSTRUCTION

How to Measure Building Span for Roof Trusses

Step-by-step guide to measuring building span for truss design. Avoid the most common measurement mistakes tha…

Feb 3, 2026READ ▸
ART.08CONSTRUCTION

7 Truss Installation Mistakes Builders Make

7 truss installation mistakes that show up repeatedly on job sites, from improper temporary bracing to missing…

Feb 10, 2026READ ▸
ART.09CONSTRUCTION

What Lumber Do Roof Trusses Use? Species and Grade

A guide to the lumber species, grades, and sizes used in residential roof trusses, including why manufacturers…

Feb 17, 2026READ ▸
ART.10CONSTRUCTION

Roof Truss Drawings for Building Permits: What Inspectors Need

What building departments actually require for truss permit submissions: engineering stamps, layout plans, bra…

Feb 24, 2026READ ▸
ART.11CONSTRUCTION

How to Install Roof Trusses: A Step-by-Step Guide

A step-by-step guide to roof truss installation, from delivery and staging through setting, bracing, and sheat…

Mar 10, 2026READ ▸
ART.12CONSTRUCTION

Roof Truss Design Loads: Snow, Live, Dead, and Wind

A builder's guide to the four structural loads that govern truss design: snow, live, dead, and wind uplift, wi…

Mar 24, 2026READ ▸
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