Quantity, in measurement, of Sheet Iron put on the Roof of the Presidents house in the City of Washington

—Novr. 1804—

—Dimensions—
Length of the South or North Side as finished on the bottom—	156.8
Ditto on the Top	103.0
Ditto on the East or West end at bottom do	74.3
Ditto on the top	20.6
Length of the Rafter—Ditto	32.0

North and South Sides	8309.4
East and West ends	3039.4
5 Dormer Roofs	180.0
10 Valleys of do.	40.0
5 Ridges of do.	60.0
4 Hyps of Roof	224.0
Pedement more than its section on the Roof	364.0
2 Valleys of pedement	88.0
10 Sides of dormers turned up	43.0
	12347.8

Brot forward				12347.8
Add one foot in breadth cut off rond the skirts of the Roof which was necessarily put on, on account of the Old Gutters				461.10
				12809.6
Deduct 5 Dormer Sections of roof	142.6			152.6
by error in Casting	10.
total Sqr feet				12657.0

NB the Sections of the chimnies, will be about equal to the Iron employed in securing the same on the sides and ends &c &c and an alowance must be made for the lap-over of each Sheet throughout the whole

    for B H Latrobe