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A key to civil architecture, or the universal British builder : containing the principles and properties of building ... : also, a strict enquiry into the present manner of building and mode of finishing ... : with a new criterion, or universal estimator ... : to which is added, a treatise of arithmetic, extraction of the roots, duodecimals, mensuration of superfices and solids, round and square timber, &c. ... / by Thomas Skaife
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54

A Key to Civil Archite6ture : Or,

EXAMPLE.

Basement story.

Feet.

145 Length.)10 Height.

bricks.

Deductions of windows.Ft. In.

9 5 c a bricks6 times.

3 4 )^

To add under windows.

Ft. In.

^ % > 1 brick6 times.

2 6 S

Deduct front door.

Ft. In.

7 °f4 bricks.

Z Hi 1

Deduct windows back front.Ft. In.

8 10)

>4 bricksq times.

3 4L d

To add under windows asbefore.

Ft. In.

3 4

2 5

The first is the lengthand height of the base-ment story ; next de-duct the windows anddoors in the front. Intaking the deductionsof windows, I thinkit the most . familiarmethod to take thewhole opening fromthe floor to the top,and after add the pie-ces under the sash-frame, because of thedifferent thickness.See the example.

Next take the breastof chimnies as theyproject into therooms,which my reader willobserve are all to bemeasured as solid, onaccount of the trou-ble, and pargettingthe inside. The me-thod is to take theheight to the turningof the trimmer, andthe width of thebreast,and after count thenumber of bricks it isin