Mass Timber, CLT, DLT Engineer — Validate a Panelized Housing System (Paid Discovery First)

About me I'm a developer running a portfolio of rehabs and ground-up projects in Cincinnati. I’ve developed a panelized building system for small residential construction. This is a real build target, not a research exercise. I'm technical, I'll read what you send, and I'll debate with you about it. What this is I need an engineer to validate it before I design a house around it. I have a written methodology document with the component geometry, assembly logic, and a proposed HVAC topology. What I don't have is engineering. The system is built from a repeating solid-timber component I call a billet. Billets stack to form walls; openings are framed with standard billets plus metal angle rather than custom headers; floor and ceiling panels integrate joists at selective depth. The stacking logic and dowel-laminated fabrication approach have been reviewed informally by a DLT manufacturer, but nothing has been analyzed or documented to a code standard. The end goal A prototype house on a real infill lot in Cincinnati, Ohio — roughly 2000 sf, 3 stories, single-family. Target start on construction documents in 6 months. But that's the second engagement, not this one. What I actually need from this engagement A design rules sheet. Not a house, not a permit set — the constraint envelope I have to design inside. Specifically: * Allowable spans for floor and ceiling panels, by depth * Maximum unsupported opening width using the billet-plus-angle detail, and where that detail stops working * Panel-to-panel and panel-to-foundation connection design * The lateral system: what resists wind and seismic, and what that costs me in solid wall length per elevation * Diaphragm behavior of the floor/ceiling panels * Stacking limits across floor lines * Where the system needs to change to be code-compliant, stated plainly If the honest answer to any of these is "this detail doesn't work, here's what would" — that's the most valuable thing you can tell me. I would rather find out now than in shop drawings. How I'm hiring I'm starting with a paid discovery task before anyone quotes the full scope. I'll send the methodology document under NDA. You return a one-page memo: what you'd need to engineer this system, where you see the real risk, and your rough phasing and fee. Flat $250, for a couple hours of your time, due in 5 days. I'm running this with a small number of engineers in parallel and I'll say so upfront. The memo is the interview wll award the full engagement from it. What I'm looking for * Direct experience with mass timber, CLT, DLT/NLT, or engineered panelized systems — not just light-frame residential * Comfort engineering outside prescriptive code, with rational design and testing where tables don't exist * You've produced connection details that a fabricator actually built * Bonus: DfMA background, or you've worked with a panel plant What I am not asking for here A stamp. Sealing for permit will be handled by an Ohio-licensed PE at the appropriate stage, and I'm not asking anyone to seal drawings they didn't produce.