Decision record · revision 1
A 7.1 ft screen 6.3 ft from the seat
Record demo-front-porch-street:1:privacy-screen:9:17
A screen 7.1 feet high and about 8.6 feet wide, standing 6.3 feet from the seat on the line to The house opposite and People on the sidewalk.
Baseline
44
Read for an hour · The porch chair
Forecast
100
+56 points
Annual average
+35
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
| Height | 7.1 ft |
|---|---|
| Width | 8.6 ft |
| Distance from reading point | 6.3 ft |
| Bearing | 184° |
Four-season acceptance basis
| Season | Before | After | Delta | Controlling after |
|---|---|---|---|---|
| January | 42 | 42 | +0 | What it feels like |
| April | 38 | 73 | +35 | What it feels like |
| July | 43 | 95 | +52 | What it feels like |
| October | 42 | 94 | +52 | What it feels like |
It earns its keep in 3 seasons and is roughly neutral in the rest.
Site controls this price depends on
| Control | Value | Provenance | Before ordering |
|---|---|---|---|
| The house | 25 ft high | declared | recorded |
| Porch roof | 10.5 ft high; underside 9.5 ft | measured | recorded |
| Porch rail | 3.1 ft high | measured | recorded |
| Street tree | 26 ft high; underside 7.9 ft | declared | VERIFY |
| The porch chair | Point at 3.6 ft above a floor 2.3 ft above datum; facing 180° | declared | recorded |
| People on the sidewalk | 25 ft from the reading point; eye 5.2 ft above datum | declared | recorded |
| The house opposite | 59 ft from the reading point; eye 13.8 ft above datum | inferred | VERIFY |
Verification queue
Acceptance checks
- Re-run the reading for reading for an hour at The porch 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: height 7.1 ft, width 8.6 ft, distance from reading point 6.3 ft, bearing 184°.
- Confirm the installed intervention preserves the tested annual behaviour (seasonal).
- 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 2.2 metres and a hundred millimetres either way changes whether it works.?
- Mark 1.9 metres 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
Anything freestanding above about 1.8 metres is a wind-loaded structure and may need consent as well as footings.
Sized against The house opposite and People on the sidewalk together; the height comes from whichever of them sits highest.
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.