About JobsiteSpecs.com
Bridging the gap between theoretical math and actual jobsite realities for North American homeowners and trade contractors.
Our Editorial & Engineering Mission
Most online construction calculators fail on the jobsite because they only provide pure geometric theory. They ignore the standard 10% concrete settling factor, forget the 3 horizontal plates required by residential building codes when framing a wall, or fail to convert roof pitch into actual slope multipliers.
JobsiteSpecs.com was built to solve this exact problem: providing field-verified, instant takeoffs that match what actually happens at the lumberyard, concrete batch plant, and home improvement store.
Our Code & Standards Sources (Zero-Hallucination Policy)
Every formula running on our platform is anchored in recognized North American building codes:
- Concrete & Masonry: Formulated according to American Concrete Institute (ACI 318) guidelines and commercial bag yield metrics from Quikrete and Sakrete.
- Wall Framing & Lumber: Modeled directly after the International Residential Code (IRC Chapter 6) governing 16-inch and 24-inch on-center stud spacing, corner backing, and plate assemblies.
- Residential HVAC Sizing: Based on the baseline principles of the Air Conditioning Contractors of America (ACCA Manual J) residential load calculations across 5 US climate zones.
- Roofing & Shingles: Structured around standard National Roofing Contractors Association (NRCA) 100-sq-ft squares and 3-bundle architectural packaging standards.
Zero Clutter, Zero Delay
We believe professional tools should be fast, private, and accessible on any smartphone in a pickup truck. We don't gate results behind email forms or force unnecessary page reloads. Everything calculates instantaneously in your browser.