Measurement of Civil, Structural and Building Services Works

Introduction

Quantity surveying converts drawings, specifications and site information into a reliable description of work that can be priced, procured, valued and controlled. Measurement is therefore more than taking dimensions. It is a disciplined process of identifying work items, applying consistent rules, recording quantities with appropriate units, and communicating assumptions so that another competent person can reproduce the result.

This chapter examines measurement practice for earthworks, roads, drainage, concrete, reinforcement, structural steel and basic mechanical, electrical and plumbing (MEP) systems. It also explains why specialist works require particular care: their quantities depend on design intent, interfaces, performance requirements, testing and commissioning, and sometimes specialist measurement standards.

Measurement should be undertaken with reference to the contract conditions, drawings, specifications, schedules of rates and the measurement standard adopted for the project. Examples of recognized standards include the International Standard Method of Measurement (ISMM), the New Rules of Measurement (NRM), Civil Engineering Standard Method of Measurement (CESMM), and locally adopted standards. These systems are not interchangeable in every detail. The governing contract documents always take precedence.

Learning objectives

By the end of this chapter, the learner should be able to:

1. Explain the purpose, principles and sequence of construction measurement.
2. Select suitable units and descriptions for civil, structural and building-services work.
3. Measure earthworks, roads, drainage, concrete, reinforcement and structural steel.
4. Prepare basic quantity take-offs for mechanical, electrical and plumbing installations.
5. Recognize work that requires specialist measurement, design information or supplier input.
6. Check quantities for dimensional consistency, omissions, duplication and interface risk.
7. Apply professional, ethical and digital practices in measurement and quantity management.

1. Principles of construction measurement

1.1 Measurement as a professional process

A measured quantity should be:

• Identifiable: linked to a drawing, specification clause, location or work breakdown structure.
• Measurable: expressed using a stated unit and a defined boundary.
• Complete: including all relevant components, such as excavation support, joints, laps or testing where required by the rules.
• Non-duplicative: measured once only, even where several drawings show the same work.
• Auditable: supported by dimension sheets, marked-up drawings, schedules or digital model data.
• Contractually appropriate: consistent with the adopted method of measurement and pricing document.

Measurement normally proceeds through reconnaissance of the documents, establishment of a dimension register, taking-off, squaring dimensions, abstracting quantities, billing or coding, and independent checking. The measurer should read the specification before measuring: a nominally identical concrete slab may differ substantially in price according to strength class, exposure, finish, reinforcement, formwork and curing requirements.

1.2 Units and conventions

Typical units include:

The unit must reflect the physical property being measured. A pipe is generally measured by length, but bends, valves, chambers, supports, insulation and testing may be separate items. A luminaire is counted by number, while containment may be measured by length and accessories by number.

1.3 Gross, net and nominal quantities

The appropriate quantity depends on the measurement rules. Net quantities commonly exclude voids or openings below a stated threshold, while gross quantities may include them. Nominal dimensions may be used for design or ordering, but measured quantities should normally reflect the installed work and the rules of the contract.

For a rectangular element with constant dimensions, the basic volume is:

where V is volume in m³, L is length in m, B is breadth or width in m, and D is depth or thickness in m. The equation assumes a prismatic shape and consistent units. Irregular shapes require subdivision, coordinates, cross-sections or digital terrain calculations.

A quantity is not necessarily a payment quantity. For example, an excavation quantity may be measured as designed excavation, whereas payment may be based on accepted in-situ volume, with different rules for overbreak, working space and disposal.

2. Earthworks

Earthworks include site clearance, stripping, excavation, filling, disposal, compaction, grading and stabilization. They are strongly affected by ground conditions, temporary works and the distinction between original ground and finished levels.

2.1 Site clearance and topsoil

Site clearance may include removal of vegetation, rubbish, abandoned structures or contaminated material. Items should distinguish ordinary clearance from specialist operations such as tree removal, asbestos removal or contaminated-soil treatment. Topsoil stripping is commonly measured in m² at a stated average or specified depth, or in m³ where the contract requires volume measurement.

The measured description should state location, depth or thickness, stockpiling or disposal destination, and whether testing or treatment is included.

2.2 Excavation and disposal

Excavation should be classified according to material and purpose, for example:

• general excavation;
• excavation in rock;
• trench excavation for services;
• excavation in contaminated ground;
• excavation below groundwater level; and
• excavation requiring support or restricted access.

The quantity of a simple rectangular excavation is obtained from its plan dimensions and depth. For changing levels, the average-end-area method may be used:

where A₁ and A₂ are end areas in m² and L is the distance between sections in m. The method assumes that the change between the two cross-sections is reasonably represented by linear interpolation. For sharply changing terrain, closer sections or a more appropriate digital surface calculation are required.

Excavation quantities must be coordinated with batter slopes, working space, shoring, dewatering and disposal. A trench 1.0 m wide at its base may require a wider excavation at the top if battered. The permanent pipe volume is not automatically deducted from excavation unless the measurement rules require it.

2.3 Filling and compaction

Fill should be identified by source and engineering function: selected fill, common fill, granular sub-base, capping, structural fill or imported material. Measurement should state whether the quantity is loose, compacted or in situ. These bases are not equivalent because compaction changes volume and moisture condition.

Compaction, moisture conditioning, testing and proof-rolling may be measured separately or included in the fill item. The specification should identify the required density or performance criterion; the measurer should not infer a compaction standard from quantity alone.

Worked example 1: trench excavation and bedding

A straight service trench is 48 m long. Its designed excavation width is 1.20 m and average depth is 1.50 m. A 100 mm granular bedding layer is placed at the bottom. Calculate the excavation and bedding quantities, assuming constant dimensions and measuring bedding as placed volume.

Excavation:

V_e = 48 × 1.20 × 1.50 = 86.40 m³

Bedding:

V_b = 48 × 1.20 × 0.10 = 5.76 m³

The quantities are 86.40 m³ of excavation and 5.76 m³ of bedding. Backfill must not be assumed to equal excavation minus pipe volume until pipe diameter, surround and the applicable measurement rules are known.

3. Roads and pavements

Road measurement requires separation of geometry, material, layer function and construction operation. A typical pavement may include formation preparation, capping, sub-base, base course, binder course, wearing course, prime coat, tack coat, kerbs, shoulders, markings and drainage.

3.1 Linear and area-based work

Pavement layers are usually measured in m² with thickness stated in the description, or in m³ where the contract specifically measures volume. For a constant-width layer:

where A is plan area in m², L is length in m and W is width in m. If volume is required, V = L × W × t, where t is compacted thickness in m.

A road 250 m long and 7.2 m wide has a plan area of 1,800 m². A 200 mm compacted sub-base therefore has a geometric volume of 360 m³, before any contractual allowance or adjustment. Material procurement may require a separate conversion from compacted volume to loose delivery volume using an approved factor. Such a factor must come from project data or accepted technical documentation; it should not be invented by the measurer.

3.2 Road components and risks

The description should distinguish pavement material class, grading, binder content where relevant, thickness, compaction and testing. Kerbs are generally measured in metres by type, including radius or transition units where required. Road markings may be measured by metre, m² or number according to marking type. Signs, posts, guardrails and street furniture are commonly measured by number or metre with dimensions and performance requirements stated.

Common omissions include tie-ins to existing roads, saw-cutting, removal of failed pavement, level adjustments at manholes, temporary traffic management and testing. These may be separate items or included obligations, depending on the contract.

4. Drainage and utility infrastructure

Drainage measurement combines linear systems, point structures and earthworks. The description should identify pipe material, diameter, class, bedding, surround, jointing, depth range, trench condition and testing requirements.

4.1 Pipes and conduits

Pipes are generally measured in metres along the installed centreline or specified route. Changes in diameter, material, pressure class, gradient or installation condition create separate items. Fittings such as bends, tees, reducers and flexible couplings may be measured by number. Pipe supports, markers, protection slabs and insulation should be included or measured explicitly according to the rules.

4.2 Chambers, gullies and manholes

Chambers are usually measured by number, with size, depth range, construction material, cover and frame class stated. Excavation, concrete, reinforcement, brickwork, benching, channels, steps and covers may be broken out where the bill requires resource-based pricing. A chamber item that merely says “manhole complete” may be unsuitable where depth and ground conditions vary significantly.

4.3 Drainage calculation and checking

For an open or closed conduit, hydraulic design is normally the responsibility of the designer, not the quantity surveyor. The measurer should verify that the measured pipe diameter, gradient, material and associated structures agree with the approved design. In a bill of quantities, a pipe length is not evidence that the pipe has adequate capacity.

Interface checks should include invert levels, connections to existing systems, crossings, utility diversions, easements, testing, CCTV inspection and reinstatement.

5. Concrete, formwork and reinforcement

Concrete work is measured by element and concrete grade or performance class. Typical elements are foundations, ground beams, slabs, columns, walls, stairs, kerbs and special bases. Descriptions should identify strength class, exposure, maximum aggregate size where specified, placing conditions, finish and curing requirements.

5.1 Concrete quantities

For a rectangular footing 12 m long, 0.8 m wide and 0.35 m thick:

V = 12 × 0.8 × 0.35 = 3.36 m³

The calculation assumes constant dimensions. For sloped, haunched or irregular members, divide the element into simple solids or use approved geometric data. Openings, recesses and embedded items are deducted only where the measurement rules require deduction. Small penetrations may be ignored for billing purposes but must still be coordinated for construction.

Concrete supply quantity and placed quantity may differ because of wastage, overbreak or ordering constraints. A bill quantity should not silently include an allowance unless the rules or pricing document expressly require it.

5.2 Formwork

Formwork is normally measured in m² of contact surface and classified by location, finish, complexity and reuse requirements. The contact area of a rectangular column is:

For a 0.4 m × 0.4 m column 3.2 m high, A_f = (4 × 0.4) × 3.2 = 5.12 m², assuming all four faces require formwork. The base is not included if the column is cast on an existing concrete surface and the rules measure only formed faces.

Formwork to soffits, sides, edges, construction joints, water-retaining structures and exposed architectural surfaces may require distinct descriptions. Falsework, propping and access can be separate obligations.

5.3 Reinforcement

Reinforcement is measured by mass, length or number depending on the adopted standard. Mass is often derived from bar schedules. The theoretical mass per metre of a steel bar of diameter d in mm is approximately:

where m is kg/m and d is bar diameter in mm. This relationship is based on steel density of approximately 7,850 kg/m³ and is suitable for ordinary reinforcing bars when the standard nominal diameter is used.

For 16 mm bar, m = 16² ÷ 162 = 1.58 kg/m approximately. If 240 m of this bar is scheduled, its theoretical mass is 240 × 1.58 = 379.2 kg. The schedule should separately account for bar shape, cutting, bending, couplers, mechanical splices, chairs and tying wire where the measurement rules require them. Laps must not be added twice: they may be included in bar lengths, measured separately, or treated under a stated convention.

6. Structural steel

Structural steel measurement requires coordination between architectural, structural and fabrication information. Principal items include rolled sections, plates, hollow sections, bolts, welds, connection components, protective coatings, fire protection, transport, erection, temporary bracing and testing.

Steel is commonly measured by mass in kilograms or tonnes. The mass should be based on approved section tables, fabrication drawings or a model schedule. The description should identify steel grade, section designation, connection type, fabrication requirements, tolerances, shop primer or galvanizing, site coating and erection conditions.

A steel frame quantity take-off should distinguish:

• primary beams, columns and bracing;
• secondary steel, purlins and rails;
• plates, cleats, stiffeners and connection assemblies;
• bolts and proprietary fasteners;
• protective treatment and fire resistance;
• shop fabrication, delivery and erection; and
• surveys, inspection, welding procedures and testing.

A common professional error is to measure only the main rolled sections and omit plates, stiffeners, connection steel, bolts or fire protection. Another is to use a preliminary design mass for procurement without recognizing fabrication waste, splice changes or design development. Payment rules determine whether fittings and fabrication are included in the rate or separately measured.

7. Basic mechanical, electrical and plumbing measurement

Building services are highly interface-dependent. A service quantity is meaningful only when its function, capacity, location, connection points and testing obligations are understood. Specialist design information should be obtained where the quantity cannot be determined reliably from the tender documents.

7.1 Mechanical services

Basic mechanical measurement may include ventilation ductwork, pipework, plant, pumps, fans, tanks, insulation, supports, controls and commissioning.

Ductwork is often measured by m² of external surface area or by metre for specified duct sizes, while fittings and terminal devices may be measured by number. The surface area of a straight rectangular duct, excluding fittings, can be estimated as:

where a and b are duct side dimensions in m and L is length in m. The equation assumes a straight duct with constant dimensions and does not include allowances for joints, flanges or fittings unless the measurement rules state otherwise.

Mechanical pipework should identify diameter, material, pressure or temperature class, insulation, finish, supports and testing. Plant items should state capacity, duty, energy performance, controls, accessories, builders’ work and commissioning. “Supply and install fan” is not an adequate description without duty, noise, controls and connection requirements.

7.2 Electrical services

Electrical measurement may include incoming supply, distribution boards, cables, conduits, cable trays, trunking, containment, switches, sockets, luminaires, earthing, lightning protection, generators, fire alarm and data systems.

Cables are often measured by metre, with conductor size, number of cores, insulation, voltage rating, installation method and termination stated. Containment is measured by metre, with fittings and supports either included or separately identified. Accessories and equipment are generally measured by number, classified by rating and type.

Electrical quantities should be coordinated with circuit schedules, load schedules, single-line diagrams, reflected ceiling plans and equipment layouts. Cable length take-offs based solely on a plan can omit vertical rises, drops, routes within plant rooms, slack, terminations and segregation requirements. Any allowance should be transparent and supported by the contract or project methodology.

7.3 Plumbing and public health services

Plumbing work includes cold-water distribution, hot-water systems, sanitary drainage, rainwater systems, fixtures, tanks, pumps, valves and insulation. Pipes are normally measured by metre and fittings by number, while sanitary appliances and valves are identified by type, size and performance.

The quantity surveyor must coordinate fixture schedules, riser diagrams, plant-room layouts, builder’s work openings, sleeves, fire stopping, access panels and connection to external services. A sanitary appliance may require a complete installation description covering supply, waste, traps, supports, isolation valves, testing and commissioning.

7.4 Specialist measurement requirements

Specialist measurement is necessary when quantities depend on technical design, proprietary systems or performance verification. Examples include:

• lifts and escalators;
• fire suppression and smoke-control systems;
• medical gases;
• building-management systems and controls;
• telecommunications and security systems;
• photovoltaic and battery systems;
• water and wastewater treatment plants;
• acoustic, vibration and clean-room installations; and
• temporary works and complex process plant.

For these systems, the quantity surveyor should use a responsibility matrix. It should identify the designer, performance requirement, supplied equipment, installation scope, testing authority, commissioning documents, training, warranties, spares and maintenance obligations. Where a lump-sum specialist package is appropriate, the tender should still contain a clear scope and measurable deliverables.

8. Measurement workflow and quality control

A robust workflow is as follows:

1. Establish the contract measurement standard, revision status and pricing structure.
2. Create a drawing and specification register.
3. Divide the project into work sections and locations.
4. Identify design assumptions, exclusions and unresolved information.
5. Take off dimensions using consistent notation.
6. Square dimensions and convert to quantities.
7. Abstract quantities into the bill, schedule or cost plan.
8. Cross-check against drawings, models, specifications and expected benchmarks.
9. Conduct an independent review of high-risk items.
10. Issue a clarification or qualification schedule where information is incomplete.

A useful dimension record includes item reference, description, drawing reference, location, dimensions, calculation, unit, revision and checker initials. Digital take-off systems can improve traceability, but automation does not eliminate professional judgment. A model may contain duplicated objects, incorrect classification, nominal rather than construction dimensions, or incomplete service data.

Worked example 2: integrated concrete take-off

An isolated foundation consists of a rectangular footing 2.4 m × 2.0 m × 0.45 m and a starter column 0.4 m × 0.4 m × 0.6 m above the footing. Calculate the concrete volume, treating the two components as separate pours.

Footing:

V₁ = 2.4 × 2.0 × 0.45 = 2.16 m³

Starter column:

V₂ = 0.4 × 0.4 × 0.6 = 0.096 m³

Total:

V_total = 2.16 + 0.096 = 2.256 m³

The bill may round this quantity according to the adopted rules, commonly to three decimal places or another stated precision. The measurement should separately identify concrete grade, formwork, reinforcement and any blinding concrete; the total concrete volume does not include blinding unless it has been calculated.

9. Applied case: illustrative multidisciplinary take-off

Background

A proposed two-storey teaching building includes a 60 m access road, a 42 m stormwater line, reinforced-concrete foundations, a steel entrance canopy and basic mechanical and electrical services. The tender drawings are at different revisions, and the mechanical layout does not show final equipment schedules.

Problem

A preliminary bill prepared only from architectural plans omitted cable containment, chamber covers, reinforcement laps, canopy connection plates and testing requirements. It also measured the road surface area correctly but treated the sub-base as a loose delivery quantity without supporting data.

Analysis

The project team established a drawing register and classified each item as measured, provisional, specialist-designed or requiring clarification. Civil quantities were checked against levels and sections. Structural quantities were coordinated with bar schedules and steel connection details. Services were reviewed against the electrical single-line diagram, equipment schedule and reflected ceiling plan. The sub-base was measured as compacted geometric volume, while procurement conversion was left to the contractor’s approved method unless the contract required otherwise.

Approach and solution

The revised take-off:

• separated excavation, bedding, pipe, surround, backfill and reinstatement;
• measured chambers by type and depth, including covers and frames;
• used reinforcement schedules rather than estimating bar mass from concrete volume;
• added steel plates, bolts, protective coating and fire protection;
• measured containment, cables, accessories and testing as coordinated items;
• issued a clarification for mechanical plant duty and commissioning scope; and
• recorded all assumptions in a measurement basis document.

Outcome

The revised bill produced fewer tender qualifications, clearer comparison of bids and a more defensible basis for interim valuation. The unresolved mechanical information remained visible rather than being concealed in an arbitrary allowance.

Learning points

Measurement quality depends on information management as much as arithmetic. Cross-disciplinary interfaces are high-risk locations. A transparent qualification is professionally safer than false precision, and quantities should be linked to design responsibility and acceptance criteria.

10. Limitations, ethics and contemporary practice

Measurement is limited by the quality and maturity of design information. Ground conditions cannot be fully known from drawings, and specialist systems may change during design development. The estimator should distinguish measured quantity, estimated allowance, provisional sum and risk allowance; these have different contractual and managerial meanings.

Ethical practice requires impartial measurement, protection of confidential tender information, disclosure of assumptions, avoidance of deliberate undermeasurement and resistance to manipulating quantities to influence a tender result. Measurement records should support fair payment and transparent change control.

Building information modelling (BIM), laser scanning, geographic information systems and digital estimating platforms can improve coordination and revision control. Automated quantity extraction is most reliable for well-classified, fully coordinated model objects. Artificial intelligence may assist in drawing recognition, anomaly detection and comparison of revisions, but outputs require human verification. AI should not be treated as evidence of quantity correctness, especially where scale, object identity, design intent or contractual rules are uncertain.

Best practice includes model-based and drawing-based cross-checks, revision tracking, controlled templates, independent checking, clear rounding conventions, documented exclusions and periodic reconciliation between design quantities, procurement quantities and site records. Site measurement for valuation should use approved records such as surveys, delivery tickets, inspection requests, test certificates and signed measurement sheets.

Chapter Summary

Construction measurement translates technical information into contractually usable quantities. Reliable measurement requires an agreed standard, consistent units, clear descriptions, traceable records and coordination with specifications and drawings. Earthworks depend on levels, material classification, working space, compaction and disposal. Roadwork measurement separates pavement layers, thicknesses, kerbs, markings, traffic management and testing. Drainage requires coordination of pipes, fittings, chambers, bedding, surround, levels and reinstatement.

Concrete is measured by element and grade; formwork by formed contact area; reinforcement by schedule length or theoretical mass under the applicable rules. Structural steel measurement includes sections, plates, connections, coatings, fire protection, fabrication and erection. Mechanical, electrical and plumbing measurement requires capacity, rating, installation method, accessories, controls, testing and commissioning information. Specialist systems should be measured through clear scopes and responsibility matrices rather than unsupported assumptions.

Digital tools improve traceability and coordination but cannot replace professional interpretation. Ethical measurement is complete, impartial, auditable and honest about uncertainty.

Key Terms

Measurement standard: Agreed rules defining how construction work is identified, quantified and described.

Take-off: Process of extracting dimensions and quantities from project information.

Abstract: Organized summary of measured dimensions and calculated quantities.

Net quantity: Quantity measured after deductions required by the applicable rules.

Earthwork: Operations involving excavation, filling, grading, disposal and ground preparation.

Formation: Prepared surface on which a pavement or foundation system is constructed.

Sub-base: Pavement layer between formation or capping and the base course.

Bedding: Specified material placed beneath or around a pipe or other element.

Chamber: Constructed access or inspection structure in a drainage or utility system.

Blinding: Thin layer of concrete or other material used to provide a clean, level base.

Formwork: Temporary or permanent mould supporting fresh concrete until it gains strength.

Reinforcement: Steel bars, mesh or other steel used to resist tensile or shear effects in concrete.

Theoretical mass: Calculated mass based on nominal dimensions and material density.

Structural steel: Fabricated steel members and components forming part of a load-bearing structure.

Containment: Trays, conduits, trunking or similar systems supporting and protecting cables.

Commissioning: Process of testing, adjusting and demonstrating that a system meets its requirements.

Provisional sum: Contractual allowance for work whose scope or quantity is not sufficiently defined.

Interface: Boundary or dependency between disciplines, packages, systems or construction activities.

Measurement basis: Documented rules, assumptions, exclusions and sources used for a quantity take-off.

Review Questions

Short Answer Questions

1. Why must the measurement standard be identified before taking off quantities?
2. State two differences between compacted fill quantity and loose delivery quantity.
3. What information should be included when describing a drainage pipe item?
4. Why is reinforcement normally measured from bar schedules rather than from concrete volume?
5. Give three examples of information needed to measure an electrical cable accurately.

Long Answer Questions

1. Explain a complete measurement workflow from document review to independent checking.
2. Discuss the measurement of earthworks, including excavation classification, changing levels, filling and disposal.
3. Explain how concrete, formwork and reinforcement are separately measured and why their descriptions must be coordinated.
4. Describe the principal measurement requirements for structural steel from fabrication through erection and protection.
5. Discuss why mechanical, electrical and plumbing works require specialist coordination and commissioning information.

Analytical / Application Questions

1. A 75 m trench is 0.9 m wide and 1.4 m deep. Calculate its constant-section excavation volume. Identify at least five additional items that may need separate measurement.
2. A tender drawing shows a ventilation duct route but no equipment schedule or fan duty. Explain what can be measured reliably, what cannot, and how the uncertainty should be managed contractually.
3. A digital model reports a steel frame mass that is 8% lower than the fabrication schedule. Develop a checking procedure to determine whether the difference arises from omissions, revisions, classification or measurement rules.

Multiple Choice Questions with Answers

Question 1

Which unit is most commonly used for measuring placed concrete?

A. m

B. m²

C. m³

D. kg

Correct Answer: C. m³

Question 2

For a constant rectangular excavation, the volume is calculated as:

A. length × width × depth

B. length + width + depth

C. length × width ÷ depth

D. perimeter × depth

Correct Answer: A. length × width × depth

Question 3

The average-end-area method for earthwork volume uses:

A. the product of the two end areas

B. the average of end areas multiplied by their separation

C. the larger end area divided by separation

D. the perimeter multiplied by the average depth

Correct Answer: B. the average of end areas multiplied by their separation

Question 4

Formwork is generally measured according to its:

A. mass of timber or steel

B. contact area with concrete

C. volume of supported concrete

D. number of concrete pours

Correct Answer: B. contact area with concrete

Question 5

Using the approximate formula m = d² ÷ 162, the mass per metre of a 16 mm reinforcing bar is approximately:

A. 0.99 kg/m

B. 1.58 kg/m

C. 2.47 kg/m

D. 3.16 kg/m

Correct Answer: B. 1.58 kg/m

Question 6

Which item is most appropriately measured by number in many drainage bills?

A. Straight pipe run

B. Pipe bedding

C. Inspection chamber

D. Trench excavation

Correct Answer: C. Inspection chamber

Question 7

A reliable electrical cable take-off should consider:

A. only the horizontal plan distance

B. route, vertical rises, terminations and cable specification

C. only the number of distribution boards

D. the concrete volume in the plant room

Correct Answer: B. route, vertical rises, terminations and cable specification

Question 8

Which is a typical specialist measurement requirement?

A. Ordinary rectangular footing volume

B. Standard topsoil stripping

C. Lift installation and commissioning

D. Straight road width

Correct Answer: C. Lift installation and commissioning

Question 9

For a 12 m × 0.8 m × 0.35 m rectangular footing, the concrete volume is:

A. 2.16 m³

B. 3.36 m³

C. 4.80 m³

D. 12.96 m³

Correct Answer: B. 3.36 m³

Question 10

The most appropriate treatment for incomplete specialist-system information is to:

A. invent a precise quantity

B. ignore the system

C. document assumptions and obtain clarification or define a clear provisional scope

D. duplicate the nearest similar item

Correct Answer: C. document assumptions and obtain clarification or define a clear provisional scope