Decision record · revision 1
A second seat 19.7 ft south
Record demo-windy-balcony:1:second-seat:9:17
Put two chairs 19.7 feet to the south and leave the main table where it is. The point is not to fix this spot but to stop needing it at the hour it does not work.
Baseline
39
Morning coffee · The one chair
Forecast
40
+1 points
Annual average
+6
worst season -5
Survey standing: Mapped: Shade, sky view and daily light are computed from real geometry rather than assumed. This is the rung at which the product starts telling you things you did not already know.
Design intent dimensions
| Distance from reading point | 19.7 ft |
|---|---|
| Bearing | 162° |
Four-season acceptance basis
| Season | Before | After | Delta | Controlling after |
|---|---|---|---|---|
| January | 69 | 91 | +22 | Privacy exposure |
| April | 38 | 38 | +0 | Privacy exposure |
| July | 42 | 37 | -5 | Privacy exposure |
| October | 44 | 49 | +5 | Privacy exposure |
This is a real seasonal trade: it helps in 2 seasons and hurts in 1.
Site controls this price depends on
| Control | Value | Provenance | Before ordering |
|---|---|---|---|
| The building | 85 ft high | declared | recorded |
| Glass balustrade | 63 ft high; underside 59 ft | declared | recorded |
| The tower opposite | 112 ft high | declared | VERIFY |
| The one chair | Point at 3.8 ft above a floor 59 ft above datum; facing 200° | declared | recorded |
| The flat opposite | 75 ft from the reading point; eye 57 ft above datum | inferred | VERIFY |
Verification queue
- The tower opposite height. Measure how tall the tower opposite actually is. A pole and a phone photo is enough.The overall verdict does not move, but direct sun changes by 100 points, so it matters for that question specifically. · measure
Acceptance checks
- Re-run the reading for morning coffee at The one chair after installation and confirm the controlling failure is not worse than the tested proposal.
- Check the completed geometry against the decision record before accepting substitutions: distance from reading point 19.7 ft, bearing 162°.
- Do not sign off the intervention from the installation-season result alone; this proposal has a known seasonal tradeoff in the annual comparison.
- Photograph the completed work from the original reading point and record any change to view, glare, privacy line or usable hours that the model did not predict.
Questions every bid should answer
- How will you verify: Somewhere else on the property that behaves differently?
- Mark 6 metres out on the ground and stand there before committing. The geometry is only as good as that distance.?
- What exact product, fixing/anchoring method and maintenance regime is included in the price?
- Which dimensions or assumptions in this record would your proposal change, and why?
- What is excluded from the price: structural design, footing design, drainage, electrical work, planning/permit work, boundary verification or underground-service locating?
Explicit exclusions and professional boundaries
Only worth it if the second spot genuinely behaves differently. The comparison below says whether it does.
This decision record is design intent and decision evidence, not a construction drawing, structural calculation, permit set, boundary survey or setting-out document.
This record does not determine wind or snow loading, foundation or footing geometry, attachment adequacy, drainage works, electrical compliance, buried-service clearance, property lines or required approvals. Those questions remain with qualified people who can inspect the site and selected product.