Fire Strategy (No-Lobby Single Stair) for 10-Bed HMO — Low Budget, Fast Turnaround Qualifications engineer should be suitably qualified and experienced” in fire engineering design. Location: England (Approved Document B Vol 1 applies) Property: 3 storeys (GF + 1F + loft), semi-detached, 10 beds (bedsit-type HMO), conversion from 6 beds Goal: Avoid lobbied staircase using an ADB-compliant equivalent solution (small single- stair provisions + performance justification). Submit a concise, “plan-check-ready” package for Building Control. What I need delivered (fixed price) 1. Fire Strategy Note (2–4 pages, PDF) o Confirms protected stair/landings to REI 60; FD30S doors; no lobby. o Uses ADB Vol 1 clauses (e.g., §3.27/Diag 3.7; §3.28/Diag 3.9; common-parts separation, Tables B1/B4; Section 7 & 9) to frame compliance. o States storey-exit travel distances (1F 4.4 m, Loft ~1 m) and that GF & 1F rooms have compliant escape windows. 2. A04 Calculations Appendix (PDF) o BS 7974 summary (ASET/RSET) with assumptions and sensitivity. o Plume mass-flow vs AOV capacity check using standard algebraic methods (e.g., Heskestad entrainment) and NSHEV approach for ≥1.0 m² AOV at stair head (auto on stair/landing detection + manual control). o Clear acceptance criteria (interface ≥2.0 m, visibility/temperature/co exposure). 3. Drawings mark-ups (PDF on my plans; DWG mark-ups if possible) o Show AOV location & free area, protected route (stair/landings/corridor segments), FD30S door schedule, travel-distance lines to storey exit, and escape-window schedule. o Indicate any emergency lighting points on the route. 4. 60-Minute Separation Method (1 page + product sheets) o Walls/Floors: REI 60 build-ups (e.g., 2×15 mm Type F boards each side of stud; 60-min tested MF ceiling to timber joists). o Penetrations: EI 60 collars/wraps; fire-stopping schedule; duct dampers where required. o Cables in common parts: metal supports/containment (no plastic clips alone). 5. Alarm Design Brief (1 page) o Grade A Category L1 in common parts; heat in each bedsit on the Grade-A system; Grade D smoke inside each bedsit. 6. o Zoning by storey, MCPs at each storey exit, panel at entrance with zone chart. Simple Management Plan (½ page) o Weekly alarm test, monthly door checks (no wedging), quarterly AOV function test, emergency-lighting tests, logbook. Inputs I will provide • Existing plans/sections (PDF; DWG if available). • Room schedule and corridor lengths. • Any available product data / preferred board systems. What your proposal must include • Fixed price (aiming for budget-friendly). • Turnaround time (fast). • 1–2 sample pages from a past residential/HMO fire note or calc (redacted is fine). • List of assumptions you’ll make and any info you still need from me. • Confirmation you will reference ADB Vol 1 sections/diagrams in the deliverable. Nice-to-have (not essential) • Familiarity with BS 7974, BS 5839-1/-6, EN 12101-2. • Ability to join one short call or answer a single round of BCO comments (priced in). Success criteria (how I’ll accept the job) • Documents clearly cite the relevant ADB Vol 1 clauses/diagrams for a no-lobby, single-stair arrangement. • Calculations show ASET ≥ RSET and AOV capacity ≥ plume inflow for credible door-open scenarios. • REI 60 separation and EI 60 penetration details are specified with real, referenced systems. • Mark-ups are clear and buildable. Please start your message with “HMO-AOV” so I know you read the brief. Share price + timeframe + sample, and we’re good to go. Thanks!
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