The republic. [volume] (Washington [D.C.]) 1849-1853, 1851-07-26

chimney, and fiue, as described in specifications,
and to be finished in all respects as fret story ex
cepting that OF substituting window for door.
Specifications for Lighthouse and Keepers
DiUeIIing conjoint, TO be erected at Black
istone's Island, on the Potomac riUer.
The building is TO be thirty ght by twenty feet
the outside. The exterior walls Of the house are
to be constructed of hard brick, and the interior
walls and walls OF the tower OF hard brick, all
laid in the best hydraulic cement mortar Under
the whole house is n cellar six feet deep in the
clear. under the flooring joist Of entrance story
floor.
The cellar exterior walls and the exterior walls
of the building to be fourteen inches thick, Ia
brick and half) The cellar floor is to be paved
with best quality hard paving brick. Doorway 10
enter cellar from the outside OF the building with
steps TO go down, stone curb around il, and bulk
head over II TO protect II against storms, &c.
There will be two windows, Of six lights each, by
10 glass, in the cellar. The walls OF the house
to be carried up 10 feet above the top of entrance
story floor, when the flooring timbers of the attic
flooring will be laid on, then carried up three feet
to the plates where it will receive the rafters.
Chimneys at each end, one of which TO have fire.
place, the other hearth and hue, with proper
funnel pipe for cooking-stove in the entrance
story; one fireplace in one attic chamber, and
funnel pipe for stove in the other.
The entrance story is divided into two rooms,
with entrance vestibule, stairway, &c, of eight
feet between them. The stairs lead from the
trance vestibule to the attic and lantern; and I'M
der them the stairs leading from the kitchen TO
the cellar The space back of the stairway is di-
vided into two closets, one opening to each room,
and TO be finished with shelves and other necessary
convenience The attic is divided into two cham
bers, with the tower and stairway between them.
In front Of the stairway is closet opening into it,
and in rear two recesscs, one opening into each
chamber.
All the josts to be of southern pine OF good quail
ity. The lower flooring joists are to be by 8
inches, Is inches apart, and doubled as trimmers,
and trim niuer he of he heart hl
and other openings, the joists of the upper floor
same size, placed l6 inches from centre TO centre.
The ridge OF the roof to receive the upper end OF
the rafters is to be truss of by inches timber,
of sufficient depth and strength TO support the roof
The roof is to be rectangular, and have one third
pitch the rafters are 10 be by inches, feet
apart, resting on the plates and ridge, covered
with good seasoned inch boards mlled, jointed,
and matched, and well nailed on. II is to be COW
cred with the best quality of Ladies' states. laid
onethird OF an inch less than third their length
TO the weather, nailed on and secured to the board
ing by the best copper or.cpmpestion nails for the
purpose In the centre of*the building is to be a
circular tower, feet in diameter on the inside,
built on proper foundation, % inches wide and
feet deep below cellar floor and up to feet above
the ridge of the house, and there receive a
stone coping of one foot rise and and ten inches
projection, of proper width. It's walls are to
be connected with the outer walls by brick par
titon wall inches thick. In the walls will be
proper openings for doorways, &C., and for one
window in front above the roof of lights, by IL
inches. The openings will have to be secured by
arches turned over them, and extra security given
to the walls by the insertion of nail plate in the
joints of the masonry proper intervals and places
The upper end Of the tower, forming deck for the
lantern to rest upon, is to be arched over, leaving
proper size opening for scutte to enter the lam
tern. The arch is to be domical arch of twenty
inches rise it's thrust to be fully countsracted by
iron bar hoop II inches square, let into the brick
work at proper height. The arch is to be
inches thick at the crown, and the deckis to havea
pitch OF inches from the centre down to the front
edged of the coping or cornice of the tower. The
deck is to be covered with 90 ounce copper sheath
ing laid on proper surface, prepared by covering
the brick work with boarding l. inch thick, nailed
to tmbers let into the brick work of the tower and
secured to it; this boarding to be covered with
sheathing paper, thoroughly saturated with and
laid down in tar. On this the copper sheathing is
to be secured in a thorough manner with copper
composition nails; and also to the front edge of the
stone coping in the most efficient manner. The
scuttle door TO be covered with copper sheathng,
and made tight and secure.
The tower and chimneys. will be collared with
lead, and properly secured with lead zinc flash
ings. There will be three windows in each room
Of the entrance etory, and in each of the cham
bers, ~ lights each, of by II cylinder glass. The
outside door in front will be 8 feet inches by
feet inches. ! inch thick, four panels and two
frieze lights; the outside door of porch feet
inches by feet inch thick, four panels. In the
entrance story are inside doors, feet inches by
feet inch thick, four panels In the attic story
four panels and one to closet, feet inches wide
and as high as roof will admit On the front door
will be lock, and on all the doors good hinges,
lntches, bolts, and fastenings.
The stairway and cross walls above the cellar are
to be pastered on the walls; all the rest of the
building above the cellar, together with the porch
is to be furred, lathed and plasered, and finished
in a decent manner. All the plastering to be done
with three coats last coat hard finished. All the
floors are to be laid double the upper one of the
best southern pine. Stairs of best southern pine
are to be constructed from the entrance to the
lantern, and from the kitchen to the cellar in a
proper manner. Steps ] inch thick. There are
to be stone steps to the front door, also to the out
side door of porch
Attached to the back of the house is a frame
porch, IL by 10 feet, with lean to roof, boarded
and slated The floor is s inches below floor of en-
trance story, and the room feet high. There is to
be one window, IL lights, by 10 glass. 1t is to
have proper sink, shelves, &c There to be
cutters to all the caves, with trunks to lead the
ter into the cisterns All the woodwork of the
house, except the floors, to be painted three coats
best quality of paint; stairs oiled with lnseed oil.
On the top of the tower is to be wrought iron
lantern, sufficient in height and diameter to con-
tain six lights in each octagon l6 by "a inches, and
two copper panes IL by 6 inches. In four of the
copper panes ventilators are to be constructed to
admit the air when required, and to keep out the
water. There to be lantern ports II inch
square to run down through the deck and arch,
and be tightly secured by bolts to the inside of
the tower. To these are secured, in proper man
HeT TIC uon SASH WIN TeDdtcs Oh tnrec-IOurtn5 Oh
an inch in depth. door, two by feet, is to be
made on one side of the octagon, and which is to
be glazed and partly covered with copper, if re-
quired, and made to shut tight into rebates having
two strong turn buttons and handle. The top Of
the lantern is dome formed by 10 rafters of iron,
concentrating into an iron hoop ~ inches dame
ter, inches wide, and half inch thick at the
top, and at The bottom secured to top rail OF lam
term which iscovered with copper, coming
down and rivetng to the top rail of lantern or the
sashes, which is inches wide, and forms favora.
bic termination to it. On the top of this dome ia a
traversing ventilator and vane, covered with cop
per; ventilator 10 inches diameter, 30 inches high;
vane 30 inches long, IL inches wide. Around the
lantern are to be eight iron railing posts, square,
standing off % inches from the outside OF the post
of the lantern. The lower end TO be fastened Sc
curely to the deck, and at the top secured to the
post OF the lantern. Two ratings. three fourth
inch round iron, to go quito round these posts
Across the base of the dome is 10 be iron bar
inch square, riyeted TO the upper bar of SASH The
lantern to be glazed with beat French, Paris made
plate glass; fourth Of an inch thick pane less
than three of inch thick to be allowed
to be put in. The lantern is to be painted three
coats black outside and white inside. copper cleo