Decision record · revision 1
A 6 ft 10 in screen 9 ft 1 in from the seat
Record demo-adversarial-opposite-observers:1:privacy-screen:2026:10:30:17. Read on 30th October 2026.
A screen 6 feet 10 inches high and about 7 feet 3 inches wide, standing 9 feet 1 inch from the seat on the line to East upstairs window.
Baseline
Works
Read for an hour · Reading chair
Forecast
Works
No extra hours this day
Across the year
weak
The status does not move in any sampled season.
Survey standing: Mapped: Shade, sky view and daily light are computed from the geometry on this plan. Unmeasured dimensions remain estimates, not verified measurements.
Real-world trial: none yet. Everything above is a forecast from the plan.
Buy nothing yetTry a reversible version at the place and recheck it before this goes out to price.
Design intent dimensions
| Height | 6 ft 10 in |
|---|---|
| Width | 7 ft 3 in |
| Distance from reading point | 9 ft 1 in |
| Bearing | 85° |
Four-season acceptance basis
| Season | Before | After | Hours | Controlling after |
|---|---|---|---|---|
| January | No | No | Hours not claimed | What it feels like |
| April | Works | Works | Hours not claimed | none |
| July | No | No | Hours not claimed | What it feels like |
| October | Works | Works | Hours not claimed | none |
The status does not move in any sampled season.
Site controls this price depends on
| Control | Value | Provenance | Before ordering |
|---|---|---|---|
| House | 23 ft high | Measured: Taken with a tape, a compass or a clock at the place. | recorded |
| Existing side fence | 5 ft 11 in high | Measured: Taken with a tape, a compass or a clock at the place. | recorded |
| Reading chair | Point at 3 ft 7 in above ground; facing 190° | Measured: Taken with a tape, a compass or a clock at the place. | recorded |
| East upstairs window | 36 ft from the reading point; eye 15 ft 1 in above datum | Measured: Taken with a tape, a compass or a clock at the place. | recorded |
| West shared path | 27 ft from the reading point; eye 5 ft 3 in above datum | Measured: Taken with a tape, a compass or a clock at the place. | recorded |
Verification queue
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 forecast for this proposal.
- Check the completed geometry against the decision record before accepting substitutions: height 6 ft 10 in, width 7 ft 3 in, distance from reading point 9 ft 1 in, bearing 85°.
- Confirm the installed intervention keeps the forecast 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
- How will you verify: A confirmed observer?
- How will you verify: Somewhere on your own land to stand it?
- Measure the actual height available before ordering: this is sized at 6 feet 10 inches and about four inches either way changes whether it works.
- Mark 9 feet 1 inch out on the ground and stand there before committing. The geometry is only as good as that distance.
- 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
CheckAnything freestanding taller than a person is a wind-loaded structure and may need consent as well as footings.
CheckThis closes the line from East upstairs window only. You are also overlooked from elsewhere, and that needs its own answer.
CheckThis decision record is design intent and decision evidence, not a construction drawing, structural calculation, permit set, boundary survey or setting-out document.
CheckThis 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.