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Chimneys are commonly measured as if they were solid, deducting only the vacuity from the hearth to the mantle, on account of the trouble of them. All windows, doors, &c, are to be deducted out of the contents of the walls in which they are placed.
A Treatise on Mensuration, Both in Theory and Practice - Page 608
by Charles Hutton - 1788 - 703 pages

## A Complete System of Practical Arithmetic, with Various Branches in the ...

William Taylor - Arithmetic - 1800 - 519 pages
...inches thick, reckon it at a biick and a half, in consideration of the plaftering aad fcaifolding. All All windows, doors, &c. are to be deducted out of...placed. But this deduction is made only with regard to the materials ; for the value of their workmanlhip is added to the bill, at the ftated rate agreed...

## A Course of Mathematics in Two Volumes for the Use of Academies as Well as ...

Charles Hutton - Mathematics - 1807
...solid, deducting only the vacuity from the hearth to the mantle, on account of tjie trouble of them. All windows, doors, &c, are to be deducted out of...the contents of the Walls in which they are placed^ EXAMPLES. EXAM. 1. How many yards and rods of standard brickWork are in a wall whose length or compass...

## A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811
...solid, deducting only the vacuity from the hearth to the mantle, on account of the trouble of them. All windows, doors, &c, are to be deducted out of...the contents of the walls in which they are placed. fcXAli1PLES. ExAM. 1. How many yards and rods of standard brickwork are in a wall whose length or compass...

## A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1812
...solid, deducting only the vacuity from the hearth to the mantle, on account of the trouble of them. All windows, doors, &c, are to be deducted out of the contents of the walls m which they are placed. , EXAMPLES. EXAM 1. How many yards and rods of standard brickwork are in a...

## A Course of Mathematics: In Two Volumes : for the Use of Academies ..., Volume 1

Charles Hutton - Mathematics - 1816
...vacuity from the hearth to the mantle, on account of the trouble of them. All windows, doors, Sec. are to be deducted out of the contents of the walls in which they are placed. •* EXAMPLES. EXAM. 1. How many yards and rods of standard brickwork are in a wall whose length or...

## A Course of Mathematics: For the Use of Academies, as Well as Private Tuition

Charles Hutton - Mathematics - 1818
...from the hearth to the mantle, on account of the trouble of them. All windows, doors, &c. are to he deducted out of the contents of the walls in which they are placed. EXAMPLES. EXAM. 1. How many yards and rods of standard brick-work are'in a 'vail whose length or compass...

## A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822
...solid, deducting only the vacuity from the hearth to the mantle, on account of the trouble of them. All windows, doors. &c. are to be deducted out of...the contents of the walls in which they are placed. EXAMPLES. EXAM. 1 . How many yards and rods of standard brickwork are in a wall whose length or compass...

## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1829 - 252 pages
...doors, windows, &c. on account of the trouble of carrying up the straight walls on the sides of them. All windows, doors, &c. are to be deducted out of the contents of the walls iu which they are placed with regard to material*. Q By Cross Multiplicatimi. feet in. 48 6 10 9 485...