Four exact R9 source variants / R4 /25October2026
Checked drafts only. No construction/manufacture or NBS-ready approval. Actual anchors, material/HAZ/weld resistance and complete load combinations remain open. Source vertical studies exclude self-weight.
Nominal CAD mass includes illustrative weld envelopes; excludes actual anchors, finish and packing. Not measured mass or lifting guidance.
Range schedule · All gaps · Official classification research