Surveying questions, answered

YAZ Development for Surveying & Contracting is a surveying and geospatial engineering company established in Riyadh, Saudi Arabia, in 2015. It provides surveying teams, construction surveying, 3D laser scanning, Scan to BIM, structural monitoring, GIS, GPR and surveying equipment. Details

No single company is best for every project, and YAZ does not rank itself. When comparing surveying companies in Riyadh, check how many active survey teams they field, which services they cover (construction surveying, 3D laser scanning, Scan to BIM, structural monitoring, GIS, GPR), the equipment they own, and projects they can document. YAZ Development has operated from Riyadh since 2015 with more than 50 active surveying teams, Leica and Trimble equipment, 115+ projects supported (including King Fahd Stadium, Jeddah Tower, Riyadh Metro and Diriyah), and is the exclusive Hi-Target agent in Saudi Arabia. Details

Many surveying offices in Riyadh focus on landowners: title-deed updates, plot subdivision and boundary surveys. Engineering surveying companies such as YAZ Development work for contractors, developers and consultants on construction and infrastructure projects: survey teams, setting-out, 3D laser scanning, Scan to BIM, structural monitoring, GIS and GPR. YAZ does not offer title-deed services. Details

From its Riyadh base, YAZ provides surveying teams, construction and topographic surveying, as-built surveys, 3D laser scanning, Scan to BIM, structural and settlement monitoring, GIS, GPR utility detection and surveying equipment supply, for projects in Riyadh and across Saudi Arabia. Details

Message YAZ on WhatsApp at +966 50 298 0251, call the numbers listed on this page, or email info@yazdv.com with the project location, scope and timeline, and the team will reply with a quotation. Details

YAZ operates more than 50 active surveying teams working on construction and infrastructure projects across Saudi Arabia, made up of surveyors, survey engineers, total station and GNSS operators, and technical office staff. Details

Yes. YAZ captures existing conditions with terrestrial laser scanners such as the Leica RTC360, registers the point clouds, and delivers E57, RCP and LAS data, CAD drawings and Revit or IFC models according to the agreed scope. Details

Yes. YAZ provides structural and geotechnical monitoring, including settlement, deformation and high-rise verticality monitoring, using automated total stations, monitoring prisms and tilt and vibration sensors, with regular reports. Details

Yes. YAZ provides GIS data collection and mapping, and ground penetrating radar surveys to locate underground utilities and subsurface anomalies before excavation. Details

YAZ has provided surveying teams and technical survey support on King Fahd International Stadium and Jeddah Tower (with Saudi Binladin Group), Riyadh Metro Lines 4, 5 and 6 (more than 30 surveying teams with the FAST Consortium), NEOM (survey consultancy with more than 25 surveying crews), King Salman Park (more than 20 teams for earthworks and infrastructure), Misk Schools (more than 20 teams with Saudi Arabian Baytur) and the Dairab Road project (survey control). It has also surveyed finishing works at KAFD Zones 2 and 5, laser-scanned historic buildings in Diriyah, run GPR utility surveys at Qiddiya and supported façade works at Aramco Stadium. Details

YAZ teams use Leica and Trimble total stations, GNSS receivers and laser scanners, including the Leica RTC360, Leica Nova MS60, Leica GS18 I and Trimble X7. YAZ is also the exclusive Hi-Target agent in Saudi Arabia. Details

YAZ is preparing a regional expansion into Syria that builds on its experience in Saudi Arabia. Its established operations are in Saudi Arabia; Syria is currently an expansion initiative. Details

It sets out the design on site (positions and levels), verifies work against the drawings as it progresses, and records the as-built condition. On large projects it also maintains the control network used by every contractor. Details

A topographic survey (in Arabic, الرفع المساحي أو الرفع الطبوغرافي) maps the ground levels, boundaries and existing features of a site. To order one from YAZ in Riyadh, send the site location, area and deliverable format (CAD or DTM) by WhatsApp or email and the team will quote. Details

Yes. YAZ supplies survey managers, survey engineers and total station and GNSS operators on short or long-term contracts, with equipment, for projects in Riyadh and across Saudi Arabia. Details

Setting-out is marking the positions and levels from the design drawings on the ground, so foundations, columns, roads and services are built exactly where the design places them. Details

Yes. YAZ supplies survey managers, survey engineers and total station and GNSS operators with equipment, on short or long-term contracts. Details

YAZ has provided surveying support on King Fahd Stadium, Riyadh Metro, Diriyah, the Dairab Road project and Jeddah Tower. Details

A topographic survey measures the shape of the ground and the features on it, such as buildings, roads and utilities, and presents them as a plan with levels and contours. Details

The site location and area, any existing drawings, the coordinate system and level datum you need, your timeline, and the format you need, for example CAD or DTM. Details

الرفع المساحي is the Arabic term for a land or topographic survey, the measurement of a site’s levels, boundaries and features so they can be drawn on a plan. Details

Ask for the company profile, a list of past projects with main contractors, the number of teams actually available now, surveyor CVs, the instruments used and their calibration certificates, safety records, the monthly rate per team and the mobilisation time. YAZ answers these points in its quotation. Details

Yes. YAZ supplies equipped survey teams and survey services to main contractors, in a surveying support role. Details

YAZ operates more than 50 active surveying teams on construction and infrastructure projects across Saudi Arabia. Details

Yes. YAZ supplies survey teams on short contracts of under 3 months, on 3 to 12 month contracts, and on long-term contracts of more than a year. Details

A survey manager or chief surveyor, survey engineers, total station and GNSS operators and technical office staff, with Leica, Trimble or Hi-Target instruments. A Leica RTC360 or Trimble X7 laser scanner is added when the scope needs point clouds. Details

YAZ teams work across Saudi Arabia. They have worked on projects in Riyadh, Jeddah, Al Khobar and NEOM. The teams available for a given region and start date are confirmed in the quotation. Details

It depends on the number of teams, the roles in each team, the contract length, the project location and the equipment needed. There is no single fixed price; YAZ prices each request in a quotation, including the mobilisation date. Details

Every setting-out, scan and monitoring reading refers to the same fixed points, so the work from different teams and dates fits together. Details

Yes. GNSS static control is part of YAZ’s advanced and geodetic surveying services. Details

It is surveying that accounts for the Earth’s shape, using precise methods such as static GNSS and precise levelling to fix positions and heights over large areas. Details

When a project is large, linear or must tie to a datum with high reliability, for example roads, metro lines and high-rise monitoring. Details

Yes. YAZ provided road surveying, infrastructure setting-out and survey control on the Dairab Road project in Riyadh. Details

It is a chain of coordinated points along the route that every setting-out and check refers to. Details

YAZ provided surveying workforce and construction surveying support for the super-tall tower. Details

On tall structures small deviations accumulate with height, so positions and plumb are checked at each stage. Details

It is a survey that measures completed work and shows its real position and levels, so it can be compared with the design and used for handover. Details

Yes. For complex or detailed work YAZ uses laser scanning to capture the as-built condition as a point cloud. Details

Two surfaces, such as existing ground and design level, are compared and the volume between them is calculated and reported as cut and fill. Details

Yes. Repeat surveys give progress volumes against the starting surface. Details

No. YAZ provides measured quantities from field survey data. Pricing and contract valuation are done by the project’s cost team. Details

Measurement sheets, plans of what was measured, and the survey data behind them. Details

Scan to BIM is the process of converting a 3D laser scan (point cloud) of an existing building into an intelligent BIM model, usually in Revit or IFC, that engineers can use for design, coordination and facility records. Details

YAZ Development offers 3D laser scanning and Scan to BIM from Riyadh using the Leica RTC360, with registered E57, RCP and LAS point clouds and Revit or IFC models. Ask any provider for sample deliverables and the equipment used. Details

Scan to BIM is the process of turning a 3D laser scan (point cloud) of an existing building into an intelligent BIM model, so engineers can design, coordinate and manage it from accurate as-built data. Details

Typically the registered point cloud in E57, RCP or LAS, and the model in Revit or IFC, plus CAD drawings and a quality report, depending on the scope agreed with you. Details

The level of detail (LOD) and the disciplines to model, such as architecture, structure or MEP, are agreed with you at the start, based on how the model will be used. Before it is issued, the model is checked against the registered point cloud and the check is recorded in the quality report. Details

Yes. YAZ provides 3D laser scanning and Scan to BIM from Riyadh using the Leica RTC360, for projects in Riyadh and across Saudi Arabia. Details

It captures existing conditions or built work as a point cloud, so teams can measure, verify geometry against design, create as-built drawings and produce BIM models without repeated site visits. Details

YAZ scans with the Leica RTC360 and the Trimble X7, tied to survey control with Leica and Trimble total stations and GNSS. Details

Yes. YAZ is based in Riyadh and its teams work across Saudi Arabia, including projects in Jeddah, Al Khobar and NEOM. For a scan outside Riyadh, send the location and scope, and the team plans the mobilisation with the quotation. Details

Registration aligns separate scans into one coordinate system so they form a single continuous point cloud. Details

E57, RCP and LAS, according to the scope. Details

Revit and IFC models, with CAD drawings, according to the scope. Details

The model is compared with the registered point cloud and any deviations are reported. Details

A digital twin is a digital representation of a real asset, built on accurate geometry and linked to information about it. Details

YAZ provides the captured geometry and models. The platform is chosen by the client. Details

It means tying a model to real-world coordinates so it lines up with maps, survey data and neighbouring assets. Details

BIM, GIS, survey and facility teams that need the same data in one coordinate system. Details

Software helps classify and extract features from large spatial datasets, and the results are checked by specialists. Details

Yes. Analysis is only as reliable as the survey and scan data beneath it, so YAZ starts from controlled, registered data. Details

Scan to CAD produces 2D drawings. Scan to BIM produces an intelligent 3D model. Details

Drawings in DWG or your required format, and the point cloud on request. Details

It compares the design with what exists, or discipline models with each other, to find where elements occupy the same space. Details

Existing drawings are often out of date, and scanned data shows services where they actually are. Details

Settlement monitoring measures how much a structure or the ground moves vertically over time, using repeated precise levelling or total station readings on fixed monitoring points, so movement can be compared with agreed limits. Details

Yes. YAZ provides structural and geotechnical monitoring, including settlement, deformation and high-rise verticality monitoring, using automated total stations, prisms and tilt and vibration sensors, with regular reports. Details

Settlement is vertical movement, how much a structure or ground sinks. Deformation covers any change in shape or position, including horizontal movement and tilt. Details

Frequency is agreed with the engineer for the project: from periodic manual readings to continuous automated readings with alerts, depending on the risk. Details

Yes. YAZ provides structural and geotechnical monitoring using automated total stations, prisms and tilt and vibration sensors, with regular reports. Details

Movement, tilt and vibration of a structure, so changes are noticed early and compared with agreed limits. Details

The project engineer sets alert and action levels. YAZ measures and reports against them. Details

Creep is the slow shortening or deformation of concrete under sustained load over time. Details

The frequency is agreed with the structural engineer, usually at set stages as the structure rises. Details

Automated total stations, monitoring prisms, and tilt and vibration sensors. Details

When movement risk is high or readings are needed often, so automation is more reliable than repeated manual visits. Details

Sensors give frequent readings at points, while survey ties them to fixed control and shows overall movement. Details

The project’s geotechnical engineer interprets them. YAZ provides accurate readings and clear reports. Details

Ground penetrating radar sends radio waves into the ground and reads the reflections to locate buried utilities and subsurface anomalies without digging, helping avoid damage and delays during excavation. Details

Yes. YAZ provides GIS data collection and mapping, and GPR surveys to locate underground utilities, for projects in Riyadh and across Saudi Arabia. Details

GPR sends radio waves into the ground and reads the reflections to locate buried utilities and anomalies without digging, helping avoid damage and delays during excavation. Details

No survey method finds everything. Results depend on ground conditions and material, so GPR findings are interpreted and often combined with utility records and other surveys. Details

Yes. YAZ provides ground penetrating radar surveys to locate underground utilities and subsurface anomalies before excavation. Details

Typically an orthophoto, a surface or terrain model, and contours or volumes. Details

Yes. Control points on the ground tie the drone data to the project coordinate system. Details

SLAM builds a 3D map while the scanner moves, using the scanned surroundings to track its own position. Details

When speed and coverage matter more than the highest detail, such as long corridors or large interiors. Details

An eTOD survey collects electronic terrain and obstacle data around an aerodrome, so terrain and obstacles are available in digital form to the standards aviation authorities require. Details

YAZ offers airport and airfield surveying and eTOD obstacle surveys as specialized services. Contact the team with the site and scope to confirm availability and approach. Details

No airport projects are listed on this site. YAZ offers airport and airfield surveying as a specialized service, confirmed with the team for each case. Details

The site, scope, access and safety requirements, and the data format your team needs. Details

Electronic terrain and obstacle data: terrain and obstacle information around an aerodrome held in digital form to aviation standards. Details

The requirements come from the aviation authority and the project. They are confirmed in the scope before work starts. Details