Decision record · revision 1
Two 8.2 ft parasols instead of one
Record demo-adversarial-opposite-observers:1:parasol-cluster:9:17
Two parasols about 8.2 feet across, set 7.2 feet apart along the table. Between them they cover a rectangle, which is the shape a table actually is.
Baseline
40
Read for an hour · Reading chair
Forecast
75
+35 points
Annual average
+0
worst season +0
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
| Width | 8.2 ft |
|---|---|
| Geometry note | two canopies |
Four-season acceptance basis
| Season | Before | After | Delta | Controlling after |
|---|---|---|---|---|
| January | 42 | 42 | +0 | What it feels like |
| April | 92 | 92 | +0 | Privacy exposure |
| July | 40 | 40 | +0 | What it feels like |
| October | 92 | 92 | +0 | Privacy exposure |
The same built change does not produce a dependable improvement across the year.
Site controls this price depends on
| Control | Value | Provenance | Before ordering |
|---|---|---|---|
| House | 23 ft high | measured | recorded |
| Existing side fence | 5.9 ft high | measured | recorded |
| Reading chair | Point at 3.6 ft above ground; facing 190° | measured | recorded |
| East upstairs window | 36 ft from the reading point; eye 15.1 ft above datum | measured | recorded |
| West shared path | 27 ft from the reading point; eye 5.2 ft above datum | measured | recorded |
Verification queue
- What the paving actually is. Photograph the paving next to something white. How dark it is decides both how hot it gets underfoot and how much light it throws back up at a seated person.The overall verdict does not move, but wetness changes by 29 points, so it matters for that question specifically. · photograph
Acceptance checks
- Re-run the reading for reading for an hour at Reading 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: width 8.2 ft, geometry note two canopies.
- Confirm the installed intervention preserves the tested annual behaviour (weak).
- 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
- Still unanswered: noise.?
- 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
Two bases to move and two things to fold when it blows.
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.