LEC 2 ABB122 - Masonry Measurement and Wall Construction

Vocabulary flashcards covering the basics of load-bearing and non-load-bearing walls, masonry components, and ANZSMM 2022 measurement and pricing rules.

Non-Load-Bearing Wall

A wall that separates interior and exterior spaces or divides internal rooms and spaces, supporting only its own weight without carrying structural loads.

Load-Bearing Wall

An essential structural element that supports the building structure by carrying loads from the roof, floors, and beams and transferring them safely to the foundation.

Masonry

A construction method using individual units such as bricks, blocks, stone, or glass blocks, traditionally bonded with mortar or using modern interlocking units.

Rule M1 (Masonry)

Measure deductions for strings, sills, lintels, corbels and similar items, deducting the brickwork replaced by these elements from the total measured quantity.

Rule M2 (Masonry)

Calculate opening size dimensions for door and window openings to include sills and lintels where they occur.

Rule M4 (Masonry)

Classify work according to size, colour, texture, height of courses, bond or pattern, and whether units are hollow, screen, or solid.

Rule M5 (Masonry)

Measure common brickwork, fairface common brickwork, and facing brickwork separately as they vary in cost and finish.

Rule M6 (Masonry)

Measure facings to two full courses below finished ground level, unless otherwise indicated on the contract documents.

Rule M7 (Masonry)

Describe pointing to one or both faces as required, stating whether mortar joints are finished on one or both sides of the wall.

Rule M9 (Masonry)

Classify work separately by levels; identify levels for consecutive floor levels having similar floor plan areas grouped together.

Rule M10 (Masonry)

Measure work documented as being executed overhead separately, as it requires additional labour, access, and safety measures.

Rule M11 (Masonry)

NZ brickwork, block veneer, and core-filled blockwork are required to be measured separately.

Pricing Rule P1 (Masonry)

Specifies that prices include items such as leaving weep holes, forming cavities, cleaning down, machine cutting, and temporary supports to openings.

Preamble Notes

General notes and specifications that describe the quality of materials, workmanship, and standards for a group of items to avoid repetition in every description.

Pricing Preambles

The process of assigning a unit rate or cost to each measured item, including materials, labour, plant, overheads, and profit.

Measurement Preambles

The process of quantifying construction work from drawings and specifications in accordance with standards like ANZSMM 2022 to prepare a Bill of Quantities (BoQ).

Brick Veneer Wall Example

A 110 mm thick wall laid in stretcher bond using selected facing bricks, bedded in $1:5$ cement:sand mortar with flush-pointed joints and galvanised wall ties.

Interlocking Units

A modern masonry system using units that fit together to reduce or eliminate the need for mortar, such as LEGO-style interlocking bricks.

Types of Brick Masonry

1. Common Brickwork: Made from fired clay bricks used in various structures, typically finished with standard mortar joints.

2. Facing Brickwork: Primarily for aesthetics, these bricks have a higher quality and appearance than common bricks, enhancing the wall's exterior.

3. Fairface Brickwork: Beautifully finished brickwork on both sides, often exposed, requiring high-quality bricks.

Types of Block Masonry

1. Concrete Block: Made from concrete and aggregates, solid or hollow, used in various residential and commercial constructions for strength and fire resistance.

2. Core-Filled Blockwork: Hollow blocks filled with concrete or steel for added strength, typically utilized in load-bearing walls.

Types of Stone Masonry

1. Random Rubble: Unshaped or minimally shaped stones that fit together without uniformity, used for structure and aesthetics.

2. Ashlar Masonry: Finely dressed stones cut into rectangular shapes, offering smoother appearance and better fit.

Glass Block Masonry

Utilized primarily for non-load bearing walls, allowing transparency and light transmission. They add a decorative element while providing some insulation and privacy.

Masonry Construction Methods

1. Traditional Bonding: Utilizes mortar to bond units together, with types including stretcher bond and Flemish bond.
2. Modern Interlocking Systems: Specially designed shapes of blocks or bricks fit together without mortar, reducing construction time and labor costs.

Load-Bearing Masonry

Walls that support loads from above structures like roofs and floors. Critical for maintaining structural integrity.

Non-Load-Bearing Masonry

Walls that only serve to divide spaces without carrying any weight from structures above.

Key Considerations in Masonry

1. Material Sourcing: Quality of materials impacts strength and longevity.
2. Environmental Factors: Weather, moisture, and temperature influence masonry construction, requiring careful planning.
3. Regulatory Standards: Compliance with local building codes is essential for safety and legal adherence.
4. Aesthetic Choices: Consideration of color, texture, and pattern during design impacts the visual appeal of the finished masonry.