Framing Resources (9 guides)

Complete guide to wall stud spacing — when 16 inch on-center is required, when 24 inch is allowed, how spacing interacts with stud size and wall height, and the material/insulation trade-offs of each.

A practical comparison of stick-built rafters and prefabricated roof trusses — cost per square foot, achievable span, usable attic space, installation speed, and design flexibility — to help decide which fits a given roof.

How floor joist span, spacing, lumber size, species, and grade relate to each other — reading a span table correctly, the living-area vs. sleeping-room load difference, and the spacing/size trade-off.

How rafter span, spacing, roof pitch, and ground snow load relate to each other — reading a rafter span table correctly, why snow load can cut allowable span dramatically, and how pitch changes the load a rafter actually sees.

How to read a sheathing panel's span rating, the structural and moisture differences between OSB and plywood, common thickness choices by application, and when one material is preferred over the other.

How to choose deck joist spacing (12" vs 16" O.C.), how ledger board fastener spacing changes with joist span under IRC Table R507.9.1.3, and the mistakes that turn a deck ledger into a structural liability.

How common, hip, and jack rafters work together in hip roof framing — the 17-inch hip unit run, the jack rafter common-difference formula, shortening allowances, and the layout mistakes that trip up first-time hip framing.

IRC rules for stair riser height, tread depth, and riser/tread uniformity, plus cut vs. solid stringer span and spacing limits — the code numbers most DIY stair builds get wrong before inspection.

How the 1/150 and 1/300 attic ventilation ratios work, how soffit vent Net Free Area (NFA) is actually calculated from physical panel size, and the balance rules that keep soffit and ridge venting from working against each other.