which is expected to hold 75,000 cubic meters (2,647,500 cubic feet) of
gas.


GASHOLDER HOUSE.

The gasholder house at Erdberg is perfectly circular, and has an internal
diameter of 63.410 meters. It is constructed, in three stories, with forty
piers projecting on the outside, and with four rows of windows between the
piers--one in each of the top and bottom stories, and two rows in the
middle. These windows have a height of 1.40 meters in the lowest circle,
where the wall is 1.40 meters thick, and of 2.90 meters in the two top
stories, where it is respectively 1.11 meters and 0.90 meter thick. The top
edge of the wall is 35.35 meters above the base of the building, and 44.39
meters from the bottom of the tank; the piers rising 1.60 meters beyond the
top of the wall. The highest point of the lantern on the roof will thus be
48.95 meters above the ground.


GASHOLDER TANK.

The tank in which the gasholder floats has an internal diameter of 61.57
meters, and therefore a superficial area of 3,000 square meters; and since
the coping is 12.31 meters above the floor, it follows that the tank is
capable of holding 35,500 cubic meters (7,800,000 gallons) of water. The
bottom consists of brickwork 1.10 meters thick, rendered with Portland
cement, and resting on a layer of concrete 1 meter thick. The walls are
likewise of brick and cement, of a thickness of 3.30 meters up to the
ground level, and 2.40 meters thick to the height of 3.44 meters above the
surface. Altogether, 2,988,680 kilos. of cement and 5,570,000 bricks were