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To complete the measurement of the masonry work associated with low-rise residential property, it will be necessary to book dimensions for internal partition walls. Care should be taken to distinguish between stud walling and other internal walling systems, which must be measured under a different set of rules. In normal circumstances, the floor-to-ceiling height will be consistent on each storey and one of the following techniques may be adopted to facilitate the measurement process (Figure 6.7).

6.03.03 Masonry work (other classifications)

The previous sections have identified how to set down dimensions and descriptions for masonry work. To complete the measurement of this work it is necessary to explain a number of other categories associated with brickwork/blockwork. For ease of reference, these are given in accordance with the relevant NRM2 work section classification ref 14.4 to 14.12. 6.03.03.01 Attached piers and projections When measuring attached piers, the height of the projection is booked in linear metres stating the width and depth together with the plane in the description. This should be accompanied by a dimensioned description or a dimensioned diagram. Isolated piers are measured in the same fashion (Figure 6.8; NRM2.14.4.1). Where the length of a projection or an isolated pier exceeds four times the wall thickness, it is defined by NRM2 as a wall and measured accordingly (Figure 6.9; NRM2 14.5 notes, comments and glossary).

Figure 6.6 A suggest approach (showing three stages) when measuring a traditional brick and block cavity wall for a gable ended property.

Figure 6.7

Alternative approaches to waste calculations and the presentation of booked when measuring internal partition block walling.

6.03.03.02 Arches

of the face (NRM2 14.6). The number of identical arches, together with the width of the exposed soffit and shape of the arch (e.g. segmental/flat), must also be included in the description (Figures 6.10 and 6.11).

6.03.03.03 Closing cavities

These are most likely to occur where windows and external doors are measured, and in the normal course of events these would be included as part of the window or door opening adjustment (NRM2 14.11 and 14.12). Closing cavities are booked in linear metres as ‘extra- over’ the initial walling measurement, stating the width of the cavity and the method of closing together with the plane (vertical or horizontal). Any additional wall ties, insulation and damp proof course are all deemed included (Figures 6.12a and 6.12b; NRM2 14.11/12.1.2).

Figure 6.8 An example of an attached pier which is designated as a projection: i.e. the length of the pier is less than four times its width and is therefore measured as a projection. Hence booked as walling followed by measurement of the pier.

Figure 6.9 An example of what looks like an attached pier but is designated as a wall: i.e. the length of the pier is less than four times its width and is therefore defined (NRM2) as a wall. Hence it is measured as walling with two separate descriptions and two different sets of dimensions each reflecting the specific wall width.

Figure 6.10 Booked dimensions and waste calculation for the measurement of a flat arch.

Waste calculation necessary to establish the average length of arch. 6.03.03.04 Ornamental bands

All are measured in linear metres stating whether they are flush, sunk or projecting (NRM2 14.7 6.13). The description should also give the width of ‘set back’ or ‘set forward’ and the plane. Bands should be described as vertical, raking, horizontal or curved (stating the mean radius on face) (see Figure 6.13).

6.03.03.05 Quoins

These are measured ‘extra-over’ the initial walling measurement, giving a dimensioned description together with the method of forming (NRM2 14.11, and see also NRM2 14.25;

Figure 6.14). Note that this item would only be invoked where the quoin brickwork differs from the facing bricks used in the body of the walling.

Figure 6.11 Booked dimensions and waste calculation for the measurement of a segmental

Figure 6.12a

Figure 6.12b

Figure 6.13 Facework Ornamental Bands.

An identical approach to the measurement of quoins (i.e. measure ‘extra-over’ the initial walling measurement) is adopted for the measurement of forming sills, jambs, reveals, cavity closers, thresholds, steps and the like.

On occasions the architect (or the client) may not have selected a facing brick at the tender stage. In such circumstances a Prime Cost sum may be included to cover the cost of the supply of the facing bricks; since these are purchased in units of thousands, the price is usually expressed in the same fashion (Figure 6.15).

6.03.03.06 Damp proof courses

These are measured in accordance with NRM2 14.16–18. The unit of measurement is determined by the width of the damp proof course. Work up to (but not exceeding) 300 mm in width is measured in linear metres, while work that is over 300 mm wide is measured in square metres. Preformed cavity trays are measured in linear metres. In each case the gauge of the damp proof course, the number of layers and the composition and mix of the bedding materials must be given in the description together with the plane of the work (stepped work, vertical, horizontal, raking and where curved; stating the radius). Damp proof courses are deemed to include forming laps, ends and angles, pointing exposed edges and bonding to damp proof membranes.

6.03.04 Masonry work (associated items)

This section of NRM2 covers the more common sundry items associated with the work of the bricklayer. In the majority of low-rise residential buildings this would include work associated with joint reinforcement (NRM2 14.19), forming fillets (NRM2 14.20) forming and filling expansion joints (NRM2 14.22), pointing to flashings together with pointing to window and door frames (NRM2 14.21), wedging and pinning (NRM2 14.23), and forming and laying creasing courses (NRM2 14.24). All of these are measured in linear metres. Finally there is an all-embracing proprietary and individual spot item inclusion (NRM2 14.25). The unit of measurement for this is enumeration (nr) and would include measurement for such as steel lintels, steps, air bricks and weep-holes (See Figure 6.19a). A list of other items that might typically be included here is given in NRM2 14.25. It is made clear that the list is not exhaustive and that, should the need arise, any other associated masonry sundry items can be included providing these are accompanied by a dimensioned diagram and/or by stating trade brochure references.

6.03.04.01 Forming cavities, insulation

For examples of recording dimensions and descriptions for forming cavities and cavity wall insulation see NRM2 14.14 (Figures 6.16 and 6.17).

6.03.04.02 Damp proof courses

For an example of recording dimensions and descriptions for damp proof courses see NRM2 14.16–18 (Figure 6.18).

Figure 6.14

Figure 6.15

Facework Quoins.

Figure 6.16 Figure 6.17 Figure 6.18 Forming cavity. Cavity wall insulation. Damp proof course.

Figure 6.19a

Figure 6.19b

Metal lintel.

Precast concrete lintel.

6.03.04.03 Proprietary items (metal lintels)

Metal lintels in external walls are most likely to be associated with window and door openings, and are measured as part of the window or door ‘opening adjustment’ (see Chapter 11). Although lintel lengths (and possibly heights) will vary throughout a building, a specific lintel manufacturer will be identified. Reference should be made to the proprietary manu facturer’s catalogue, giving product-specific references in the descriptions as appropriate. Where a number of similar components are involved (as with steel lintels), it is advisable to set up a heading on dimension paper recording generic details. This eliminates the need to repeat the full detail of the component information with each description. Instead, the measurer need only record the variable details. For steel lintels this would be the lintel length and manufacturer’s code.

See NRM2 14.25 (Figure 6.19a); for precast concrete lintels see NRM2 13.1 (Figure 6.19b).