Visual companion
Read the caption with each view. Open the image to enlarge it; use the source drawing when a dimension needs closer examination. Image labels are repeated or explained below at readable text size.
- One room in three views
- One room, another way of seeing
- Known levels and an assumed surface
- The same site in section
- Field sketch to measured drawing
- Curved contours and a matching profile
- Where the heavy layer sits
- Three ways a floor meets the ground
- Two openings, two gravity paths
- A water path at a sill
- Rise, going and nosing
- A route outside Walsh Street
One room in three views
The same room is six metres wide, four metres deep and 2.7 metres high. In plan, the front wall is at the bottom. Measured from its left corner, the door occupies one to two metres and the window occupies 3.5 to five metres.
The front elevation keeps the same left-to-right positions. The door head is 2.1 metres above the floor. The window sill is 0.9 metres above the floor and its head is 2.1 metres above the floor, so the window height is 1.2 metres.
The section plane passes through x = 4.25 metres and looks towards the left side of the plan. The front wall is on the left of the section; the back wall is on the right. The door is outside this cut and is omitted. A dashed blue line and arrow identify the cut and viewing direction in this figure’s own legend.
Wall thickness and construction layers are omitted. The blue marks identify the window and section relationship; they are not an assertion of a universal professional line convention. Use the dimensions and labelled directions, not a ruler on this screen.
Original fictional teaching geometry — Created for this Fieldbook. Diagram conventions are stated locally; these are not surveyed or construction documents.
One room, another way of seeing
The front wall contains the same door and window as V01. Follow the width along the front face, the depth along the right face, and the height vertically. The sloping lines are a pictorial projection of horizontal building directions; the floor is not sloping.
This view uses the same six-by-four-metre room and 2.7-metre height. The door and window retain their V01 positions and heights. The roof, left and back wall faces, wall thickness and door leaf are omitted. The dashed upper outline identifies the missing enclosure’s extent.
The coloured door area marks the opening, not a depicted leaf or material. Both the upper dashed outline and rear dashed vertical indicate the omitted model extent. The view helps connect three dimensions, while the separate plan and elevation make selected positions easier to compare. This is a simplified spatial model, not a construction cutaway.
Original fictional teaching geometry — Created for this Fieldbook. Diagram conventions are stated locally; these are not surveyed or construction documents.
Known levels and an assumed surface
Only the four corner levels are the starting data: both left corners are 100.00 metres and both right corners are 101.20 metres. The datum is arbitrary, not AHD. The teaching assumption is a uniform surface rising only from left to right.
With that assumption, the 100.30 contour is three metres from the left; 100.60 is six metres from the left; 100.90 is nine metres from the left. The contour interval is 0.30 metres.
The proposed reference plane is 100.60 metres. Its division produces two plan areas of 48 square metres each: fill on the lower half and cut on the higher half. These are horizontal areas, not excavation volumes. Section B follows the marked centre line across the twelve-metre length.
Original fictional teaching geometry — Created for this Fieldbook. Diagram conventions are stated locally; these are not surveyed or construction documents.
The same site in section
The main section uses equal horizontal and vertical scales. Rise is 1.20 metres over a horizontal run of twelve metres: ten per cent, or one in ten. Ten per cent is not ten degrees.
The reference level crosses the straight surface halfway along. Each shaded section triangle has a six-metre base and 0.60-metre maximum height. Half multiplied by six multiplied by 0.60 gives 1.80 square metres.
The enlargement uses five times the vertical scale and is explicitly labelled. It makes the triangles easier to see but exaggerates apparent steepness. No soil behaviour, excavation stability, bulking or construction volume is determined by this exercise.
Original fictional teaching geometry — Created for this Fieldbook. Diagram conventions are stated locally; these are not surveyed or construction documents.
Field sketch to measured drawing
P is the front-left corner, Q front-right, R back-right and S back-left in both records. DR1 identifies the door and W1 the window. The rough sketch is not to scale.
The lower plan uses the fuller fictional dataset: overall interior dimensions 6000 by 4000 millimetres, right angles assumed, door offsets 1000 and 2000 millimetres, and window offsets 3500 and 5000 millimetres from P along the front wall. These opening offsets are additional supplied data; the two overall lengths shown on the rough sketch do not establish them.
The point is the traceable translation from an observed record into geometry. On a real job, opening offsets and squareness need their own measurement and checks. The diagram supplies no evidence of an actual inspection.
Original fictional teaching geometry — Created for this Fieldbook. Diagram conventions are stated locally; these are not surveyed or construction documents.
Curved contours and a matching profile
The complete mathematical model is z = 100 + 0.05x² + 0.1y, with x and y measured in metres from zero to ten. In plan, x increases rightwards and y upwards from the lower-left corner. All contours and the section come from this declared surface, not from four measured corners.
The contour interval is one metre. The marked section follows y = 5 metres, giving z = 100.5 + 0.05x². Its endpoints are 100.5 and 105.5 metres, and its midpoint at x = 5 is 101.75 metres.
The section uses equal horizontal and vertical scales. Its changing steepness corresponds to changing contour spacing. The average rise/run is five divided by ten, or fifty per cent; local gradient varies. A real site requires sufficient observations and a defensible terrain model.
Original fictional teaching geometry — Created for this Fieldbook. Diagram conventions are stated locally; these are not surveyed or construction documents.
Where the heavy layer sits
In conventional brick veneer, the exterior masonry is separated from the room by the insulated framed zone and lining. In the reverse arrangement shown, the masonry is on the room side of the insulated framed zone.
The room-side masonry can exchange heat with the room more directly. That says where heat storage is accessible; it does not establish a whole-wall R-value or guarantee comfort. Insulation resists heat flow, while mass stores and releases energy.
Read the layer order and inside/outside labels together. Ties, moisture control, fixings, support, fire performance and full junctions are not designed here. These are conceptual assembly comparisons, not interchangeable installation details.
Three ways a floor meets the ground
The upper section shows a wall transferring load to a strip footing and then the ground. The middle section shows floor joists bearing on a bearer, which transfers load through posts to pad footings. The lower section shows a slab supported at the ground with deeper edge zones.
Look for a continuous sequence of supported parts, rather than treating the floor surface as the entire system. The section through the bearer is an end view; it does not show the complete grid of supports in plan.
These are conceptual forms. Soil suitability, dimensions, reinforcement, connections, internal slab stiffening, damp protection, termite management and engineering design are omitted. The drawings cannot select a footing system for the fictional sites.
NCC 2025 Housing Provisions — Part 4.2 and its application conditions; governing edition still depends on jurisdiction and project.
Two openings, two gravity paths
The masonry opening is supported by its lintel and bearings; the framed opening is supported by its header and supporting studs. The openings have the same depicted size, so the comparison isolates the two construction systems.
The arrows show selected downward gravity paths. They are not wind arrows or a complete structural analysis. Continue each path below the drawing to the relevant supporting construction: a line ending at the image edge is not the end of the real load path.
Wall ties, bracing, tie-down, fixings, movement allowances and engineered member sizes are omitted. The window is not being assigned the building load above it.
A water path at a sill
Outside is left and the room is right. Follow the blue receiving surface outward and downward, then beyond the outer face. The upstand rises at its room-side end.
The small support beneath the frame is a discrete packer. Water passes between packers, outside this particular section cut. It does not pass through solid material. A continuous obstruction across that route would change the drainage condition.
This drawing only explains support and drainage relationships. The full window profile, end dams, jamb connections, seals, fixings and product-specific installation are not resolved. It must not be used as an installation detail.
Your Home: cladding systems — Weather management and interfaces; original conceptual figure, not a copied product detail.
NCC 2025 Housing Provisions — Clause 7.5.6 outward drainage at openings; apply its actual conditions. Original conceptual drawing, not a reproduced NCC figure.
Rise, going and nosing
Count four changes between finished levels: lower floor to first tread, then to the second, third and upper landing. There are three intermediate treads because the upper landing receives the fourth rise.
Rise is the vertical difference between successive finished levels. Going is the horizontal distance between successive nosing positions. The projecting nosing makes tread depth and going different measurements.
All four rises are equal in this fictional geometry. No numerical rise or going is selected for construction. Handrails, barriers, headroom, landings beyond the shown edge and applicable conditions require separate design.
NCC 2025 Housing Provisions — Part 11.2 terminology and conditions. Original conceptual drawing; not a reproduced NCC figure.
A route outside Walsh Street
Follow the visible stair from the paved outdoor space towards the upper doorway. Its relation to the wall and planting can be observed. The photograph does not show the complete interior circulation or establish room names.
This is a later view, photographed on 2 April 2012, not a reconstruction of the house at first occupation. Appearance alone does not establish structural capacity, material specification or present-day accessibility compliance.
Outdoor stair at Walsh Street / Boyd House II, South Yarra. Rebecca D.G, “Boyd House II img stairs.jpg”, via Wikimedia Commons, CC BY-SA 3.0. Photograph reproduced without alteration. Its original supplied size is 600 by 402 pixels.
