Measurement Lecture 3
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Questions and Answers

When measuring concrete work for a slab, why is it recommended to separate a large slab into smaller sections?

  • To reduce the overall quantity of concrete required.
  • To simplify the calculation of complex shapes and dimensions. (correct)
  • To ensure uniform concrete curing across the entire slab.
  • To comply with specific concrete mixing ratios for smaller volumes.

Which of the following elements are typically measured under the 'Brickwork and Blockwork Trade' according to the provided information?

  • Plasterboard and tile finishes on internal walls.
  • Carpet and rubber sheet flooring.
  • Wood flooring and timber partitions.
  • Reinforcement within brick walls and isolated brick piers. (correct)

What is the standard unit of measurement for brick walls, block walls and damp-proof courses in construction estimation?

  • Cubic meters (m3)
  • Square meters (m2) (correct)
  • Linear meters (m)
  • Kilograms (kg)

A construction project includes the installation of block steps leading to an entrance. How should these steps be measured for the Bill of Quantities?

<p>In linear meters (m), measuring the total length of the steps. (D)</p> Signup and view all the answers

Which 'Internal Finishes' trade includes carpet sheet/tile finishes?

<p>Plastering and Paving (Section XVI) (B)</p> Signup and view all the answers

According to the standard method of measurement, how is an item with a girth greater than 300mm typically measured?

<p>In square meters (m²) (D)</p> Signup and view all the answers

When assessing the cost effect of a variation involving a change in the size of a wall, which of the following items would NOT typically be considered?

<p>Furniture (D)</p> Signup and view all the answers

In the context of variations in building works, what is the primary role of a Quantity Surveyor (QS)?

<p>To assess the cost effect of design changes. (B)</p> Signup and view all the answers

What is the initial and most crucial step in measuring variations in construction work according to the text?

<p>Reading the drawings correctly. (B)</p> Signup and view all the answers

What does 'Cost Effect = Sum of (Net Quantity x Unit Rate) of different items' refer to in the context of construction variations?

<p>The overall financial impact by changes to individual items. (C)</p> Signup and view all the answers

If a Bill of Quantities (BQ) reference is missing during a valuation, what action should be taken to determine the cost of the item?

<p>Derive a pro-rata rate or star rate. (C)</p> Signup and view all the answers

A design change requires using a different type of interior wall finish in a building project. Which main aspects of cost will this variation likely impact?

<p>The material cost, the labor cost, and potentially the waste disposal cost. (A)</p> Signup and view all the answers

During the measurement of brickwork for a bedroom in a flat, what assumption is made regarding the thickness of the door frame?

<p>80mm (D)</p> Signup and view all the answers

When measuring strip flooring, what key details must be specified besides the area in square meters?

<p>Width, thickness of strips, jointing methods, and fixing to the sub-base. (B)</p> Signup and view all the answers

In Section XIII, how are toilet cubicle partitions and proprietary office partitions typically quantified for measurement purposes?

<p>Toilet cubicle partitions are measured in sets, while office partitions are measured in number (nr). (B)</p> Signup and view all the answers

What is the primary difference in how flush doors and fire-rated doors are quantified in construction documentation?

<p>Flush doors are measured in number or sets, while fire-rated doors and frames are measured in sets. (A)</p> Signup and view all the answers

When quantifying cement and sand screeds applied to various surfaces, what unit of measurement is typically used?

<p>Square meters (m²) (D)</p> Signup and view all the answers

Which of the following correctly differentiates how tiling to floors and tiling to skirting are measured?

<p>Floor tiling is measured in square meters (m²), while skirting tiling is measured in linear meters (m). (A)</p> Signup and view all the answers

For rubber and plastic sheet or carpet sheet/tiles finishes, what unit is consistently used to measure tiling applications on floors, treads, risers, walls, and columns?

<p>Square meters (m²) (D)</p> Signup and view all the answers

In the context of painting general surfaces such as walls, ceilings, and beams, what is the standard unit of measurement used for quantification?

<p>Square meters (m²) (B)</p> Signup and view all the answers

A project involves installing both carpet tiles and painting a large surface. What units of measure would be used respectively for estimating these two tasks?

<p>Carpet tiles in square meters (m²), painting in square meters (m²). (C)</p> Signup and view all the answers

Flashcards

Brickwork and Blockwork

Trade that includes brick walls, isolated piers, chimney stacks and block walls.

Measuring Brickwork

Measured in square meters (m²) and includes brick walls, brickwork in fillings, isolated piers, and chimney stacks.

Block Walls

Measured in square meters (m²).

Damp-proof courses

Measured in square meters (m²).

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Woodwork

Trades that can include flooring, partitions and doors.

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Brickwork Girth > 300mm

Brickwork with a girth greater than 300mm is measured in square meters (m²).

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Brickwork Girth ≤ 300mm

Brickwork with a surface area and girth of 300mm or less is measured in meters (m).

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Pipes and Conduits Brickwork

Brickwork around pipes and conduits is measured in meters (m).

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Variations (Design Changes)

Design changes instructed by the architect or engineer during construction.

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QS Role in Variations

Quantity Surveyors determine the cost impact (positive or negative) of design changes on the contract.

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Variation Cost Effect

Cost Effect = Sum of (Net Quantity x Unit Rate) of different items

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Identifying Affected Items

Drawings and building technology knowledge.

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Measuring for Variation

Read drawings, identify items, work out quantities, find unit rates, and sum the cost effects.

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Strip Flooring

Installation of wooden strips of specific width and thickness, joined and fixed to a sub-base.

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Toilet Cubicle Partitions

Partitions used in toilet cubicles, measured in sets

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Proprietary Office Partitions

Pre-manufactured office partition systems, counted by number (nr).

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Flush Doors

Standard doors, either single units or sets (including frames).

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Fire Rated Doors and Frames

Doors and frames designed to resist fire, specified in sets.

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Cement and Sand Screeds

A mixture of cement and sand used to create a level surface on walls, ceilings, floors, etc.

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Tile & Slab Finishes

Surface covering using individual tiles or slabs on floors, walls etc.

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Painting Works

A trade involving the application of paint to surfaces like walls, columns and beams.

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Study Notes

  • The lectures cover measurement of brickwork, blockwork, internal finishes, and measurement for variations
  • It also covers concrete works and in-class exercises

In Class Exercise for Concrete Works

  • Measure the concrete and formwork for the soffit of Slab 1S19 using dimension papers. This exercise should take 20 minutes.
  • Hints for the exercise include separating 1S19 into two small slabs, using dimensions on the drawing first, and calculating the width and length of the two small slabs

Measurement of Brickwork and Blockwork Trade (Section VIII)

  • This trade includes brick walls, isolated piers, chimney stacks, block walls, and reinforcement in brickwork or blockwork
  • Brick and block pavings and steps are also part of this trade
  • Brickwork, including brick walls, brickwork in filling openings, isolated piers, chimney stacks grouped together, and dwarf walls, measured in m²
  • Labors to existing work are each measured separately
  • Deductions are measured the nett sizes of openings and recesses; no deductions are made for openings ≤ 0.10 m²
  • Deductions made for string courses, cills, lintols, and the like only to the extent of full brick courses in the height
  • Brickwork and block walling circular on plan are measured the mean length

Internal finishes trades

  • Woodwork (Section XIII): Examples include flooring, partitions, and doors
  • Plastering and paving (Section XVI): Examples include plasterboard, tiles, and carpet, sheet/tile finishes
  • Painting (Section XXI): Includes painting, polishing, and clear finishing. Examples include:
  • Strip flooring dimensions include width and thickness of strips and the methods of jointing and fixing to sub-base materials, bedding materials, or battens in m²
  • Woodwork dimensions for toilet or office cubicle partitions are in sets

Measurement for Variation

  • Variation is defined as design changes instructed by the Architect in building works or the Engineer in civil works
  • Quantity Surveyors assess (value) the cost effect of design changes (+ve / -ve to the Contract Sum?)
  • Cost Effect = Sum of (Net Quantity x Unit Rate) of different items
  • Identify items affected by variation using drawings combined with building technology knowledge
  • Find a suitable Unit Rate from Bills of Quantities or derive a pro-rata/ star rate if necessary
  • Add up all "cost effects" of different items to arrive at an overall cost effect of the Variation
  • Quantities and rates in BQ are the basis of the contract sum/part of the contract for calculating adjustments from a variation

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