Topographic Survey Scales: 1:500 vs 1:10,000 — Which One to Order

Clients frequently specify the wrong survey scale in their technical briefs — either erring on the side of caution and overpaying, or underspecifying and having to redo the work. Below we break down what each scale actually delivers and how to get the choice right the first time.

What Survey Scale Means

Scale is the ratio of dimensions on a drawing to real-world dimensions. The notation “1:500” means that one centimetre on the plan equals 500 centimetres (five metres) on the ground. The smaller the second number, the larger the scale — and the more detail the plan captures.

Scale directly affects:

• cost and turnaround — a large scale requires a dense grid of survey points; at 1:500, fieldwork on 1 hectare takes 4–6 times longer than at 1:10,000;
• document acceptance — expert review bodies and designers work to specific scales prescribed by standards;
• positional accuracy — at 1:500 the allowable planimetric error does not exceed 0.1–0.15 m; at 1:10,000 it can reach 2–3 m.

Four Working Scales in Engineering Surveying

In Kazakhstani practice (SP RK EN 1997-1, SN RK 1.02-03), four primary scales are applied for engineering-geodetic surveys:

Scale	1 mm on plan	Typical applications
1:500	0.5 m	Working design, building set-out, as-built surveys
1:2,000	2 m	Feasibility studies, infrastructure corridors
1:5,000	5 m	Area layout schemes, district master plans
1:10,000	10 m	Pre-design studies, field reconnaissance

1:500 — When There Is No Alternative

This is the largest scale in regular use. It is required for:

1. Working drawings for capital construction — residential buildings, industrial structures, utility networks. Without a 1:500 topographic plan an architect cannot correctly tie a building to the terrain and existing services.
2. Building permits in Kazakhstan — land authorities require a site plan at exactly this scale.
3. As-built surveys on completion of construction — all utility networks and structures are recorded to 0.1–0.15 m accuracy.
4. Detailed surveys of industrial sites before reconstruction — when precise elevations of existing structures, services, and fencing are required.

For surveys in Aktau and Mangystau Region we set up a GNSS base station and work with a Leica TS16 or Trimble S7 total station on site. Minimum point density is one point per 15–20 m²; denser on complex terrain.

1:2,000 — For the Pre-Design Stage

Used when a project has not yet been approved but the general configuration of the site needs to be understood:

• feasibility study for a facility;
• survey of an industrial block or residential district;
• alignment of linear features (roads, pipelines) up to 1–10 km long.

In the oil-and-gas sector of Mangystau this scale is in demand for preliminary design of pipeline corridors and access roads to fields.

1:5,000 and 1:10,000 — For Large Areas

When the project area exceeds 50–100 ha, working at 1:500 is not economically justifiable. Smaller scales are used instead:

• 1:5,000 — area layout scheme, cadastral block plan, settlement master plan.
• 1:10,000 — route reconnaissance studies, UAV aerial photogrammetry for field monitoring.

A DJI Matrice 4E drone combined with photogrammetric processing in Agisoft Metashape can cover 3,000–5,000 ha in a single flying shift at accuracy sufficient for 1:5,000. Fieldwork takes a few hours — instead of weeks of ground survey.

Three Questions That Determine the Scale

1. What design stage are you at?

• Site assessment, option selection → 1:10,000 or 1:5,000
• Feasibility study, concept design → 1:2,000
• Working design, construction → 1:500

2. What is the area of the site?

Area	Recommended scale
Up to 5 ha	1:500
5–50 ha	1:500 or 1:2,000 (depending on stage)
50–500 ha	1:2,000 or 1:5,000
Over 500 ha	1:5,000 or 1:10,000

3. What do the brief or expert-review requirements specify?

In Kazakhstan, design institutes often state the required scale directly in the technical brief. If they do not — refer to SN RK 1.02-03 “Engineering Surveys for Construction” (Sections 4–6). When in doubt, agree on the scale with the project’s chief engineer before fieldwork begins: redoing a survey costs more than clarifying the brief.

Common Client Mistakes

“Give us 1:500 for 50 ha.” This happens when a brief is copied from a similar but smaller project. The cost will be 3–4 times higher than 1:2,000 for comparable quality at the pre-design stage.

“We only need the plan, no elevations.” A topographic survey by definition includes contour lines and spot heights. If all you need is a site plan without terrain relief — that is a different type of work (a location scheme), which is faster and cheaper.

“Will 1:1,000 work?” The 1:1,000 scale is rarely used and only when specifically requested by an expert-review body. It is not a standard scale for most Kazakhstani design institutes — expert review typically accepts either 1:500 or 1:2,000.

What a Topographic Survey Delivers

Regardless of scale, the final deliverables include:

• Topographic plan — DWG (AutoCAD) and PDF formats, with contour lines, spot heights, and site features;
• Technical report — methodology, equipment, accuracy, coordinate system used (SK-42, WGS-84, or Aktau local CRS);
• Coordinate and elevation register — survey points and control points;
• Digital terrain model (DTM) — in LandXML or DXF format on request.

For projects in Aktau, materials are delivered in the coordinate system accepted by the city land committee.

Turnaround and Cost in Aktau and Mangystau Region

Indicative ranges for typical projects:

Project	Scale	Field duration	Total turnaround
Site up to 1 ha	1:500	1 day	5–7 business days
Site 1–5 ha	1:500	2–3 days	7–10 business days
Area 5–50 ha	1:2,000	1–2 days	7–10 business days
Area 50–500 ha (UAV)	1:5,000	1 day	10–14 business days

For sites in the desert zone of Mangystau, a mobilisation element is added: crew travel arrangements, drinking water, logistics. Exact costs are calculated once we receive the technical brief and site coordinates.

Equipment We Use

GeoProGlobal performs engineering-geodetic surveys in Aktau, Zhanaozen, Beyneu, and across Mangystau Region. Our fleet includes:

• GNSS receivers Trimble R12i and Leica GS18 — base stations and RTK surveys;
• Total stations Leica TS16 and Trimble S7 — detailed survey in constrained conditions;
• UAV DJI Matrice 4E — aerial photogrammetry over large areas;
• Software — Trimble Business Center, Agisoft Metashape, AutoCAD Civil 3D.

All instruments are calibrated and have current calibration certificates.

Summary

Choosing a topographic survey scale is a design question, not a technical one. Answer three questions — project stage, site area, expert-review requirements — and the scale will follow naturally.

If you have questions or need advice on a technical brief, contact us. We work across Mangystau Region and Kazakhstan as a whole, and we travel to remote sites.