Sometimes the front of the chimney-breast does not intersect the walls, but is projected out from each adjacent wall by two retuniingvertical planes of equal breadth, each • at a right angle with the adjacent wall : in this the• triangular prism is measured as before; but as the part between the prism and the wall is frequently- constructed with burrs, an inferior kind of brick, this part will then consist of two rectangular prisms, and there is nothing more to do than to measure them as such then deducting the vacuity of the fire-place from the triangular prism, the re mainder will lie the true solidity of this prism. In tho former case, when the plane of the breast intersects the two sides of the room, a lineal allowance per foot ought to be made for the inside splays, and in the latter case, where the plane of the breast does not intersect the adjacent walls, there will be two outside splays, and two internal right angles; in this case, there nowt be an allowance for outside splays, and the internal right angles, per foot, running each according to its respective qualities : and in both cases it would only be fair to allow for the vertical extent of the angles of the tire-place. It is not lucre meant that these allowances should be made according to the present prices, which are adapted so as to include hinderanees at a hazard, without any foundation to common reason, but that the price per rod should be reduced in an adequate degree, and each kind valued by its common measure, in proportion to the time it requires to perform a given portion.
A row of plain tiles laid edge to edge, with their broad surffices parallel to the termination of a wall, so as to project over the wall at right angles to the vertical surface, is called single plain tile creasing, and if two rows are laid one above the other, the one row breaking the joints of the other, then these two rows are called double plain tile creasing ; over the plain tile cruising a row of bricks are on with their length in the thiekuess of the wall, called a barge course, or rope.
In gables which terminate with plain tile creasing, coped with 'brick, in order to tlt•m the sloping bed for the tile creasing, the bricks must be cut, which is a considerable trouble ; the sloping of the bricks thus, is called cut splay. Plain tile creasing and cut splay are charged by the foot run, and sometimes the latter by the foot superficial.
A brick wall made in panels between quarters, is called brick-nogging. This kind of work is generally measured by the yard square, with the quarters and pieces included in the 'measure ; but the apertures should be deducted, and the lineal measure of the angles allowed.
Pointing is the tilling up of the joints of the bricks on the face, alter the wall is built, with mortar, so as to be regular. Pointing is of two kinds. In either, the mortar in the joints is well raked out, and filled again with blue mortar: in the one kind, the courses are simply marked with the edge or a trowel ; in this state it is called fat joint pointing. if in
addition to flat joint pointing, plaster be inserted in the joint with a regular projection, and neatly pared to a parallel breadth, this state is called tuck pointing, or luck joint point ing, formerly tuck and pall.
Pointing is measured by the foot superficial, including in the price, mortar, labour, and seatiblding.
Rubbed and gauged work is set either in putty or mortar, and is measured either by the foot run, or by the foot super ficial, according to the construction.
The circular parts of drains may be either reduced to the standard, or to the cubic foot, and the number of rods taken if required. The mean dimension of the. arch will be found by taking the half sum of the exterior and interior circum ferences ; but perhaps it might be proper to make the price of the common measure, whether it be a foot. or a yard, or a rod, greater, as the diameter is less ; but as the reciprocal ratio would increase the price in small diameters too much, perhaps prices at certain diameters would be a sufficient regulation.
Circular walls are measured in the same way, by finding a mean girt, which is to he multiplied by the height and thickness; but all work should be valued in proportion to the time required to perform a given portion of it, but in equal portions of straight and curved walls of the same kind of workmanship, the curved portion will require a greater price than the straight portion.
In measuring canted bows, the sides are measured as continued straight walls, hut the angles on the exterior side of the building, whether they are external or internal, are allowed for in addition, and paid for under the denomination of rim of ; all angles within the building, if oblique, from whatever cause they are formed, whether by straight or circular bows, or the splays of windows, are allowed fur, under the denomination of run of cut splay. These allowances are certainly what ought in justice to be, and this is fulfilling, in part, what has been so much iusisted upon ; but allowances should extend to right angles also : it' the bricks be made to the splay, then the charge need not be greater than when the angles are right.
Brick cornices are charged by the foot run, but as there are many kinds, and these executed with more or less diffi culty, the price will depend on this, and also upon the value of the materials.
Garden walls are measured the same as other walls, but if they are interrupted with piers, the thin part may be measured as in common walling, and the piers by themselves, and the additional allowance for the right angles, at per foot run, should be granted. The coping is measured by itself, according to its kind.