The Commissioners appointed by His Excellency the Lieutenant Governor to superintend the completion of the said Light House, Hereby Give Notice, that they are prepared to receive
Until Noon on the first day of July next,
for the completion of the same, agreable to the plan and specifications which may be seen by application to the Commissioners. The tenders will be opened at the Exchange Coffee House, at Port Hope, at noon on Saturday the said 1st day of July, the contract to be completed on or before the last day in October next.
The Contractor will be required to take the materials now on the Island at the valuation made of them by the present Commissioners and the late Contractor.
J.T. Williams, Commissioners
The Tower to be circular and 28 feet in diameter at the base, and 50 feet high, the foundation to be excavated 18 inches into the solid limestone rock; the basement to be solid stone work of 8 feet in height, the external surface to be worked to an external Radius of 70 feet, as well as a central radius ranging with the height of cut stone, of a hard and durable quality in courses of not less than 14 inches in height, to be laid two stretchers and one header alternately, no stretcher to be more than four feet long, and not less than two feet 6 inches; no stone to be less in breadth of bed at the narrowest part than the thickness of the course and one half more. The headers, to be 3 feet 6 inches in depth of bed, wherever they are laid into walls not exceeding that thickness, none of them less than 21 inches long in the face, to carry their breadth and thickness throughout. The beds of all the radiated face work to be kept full in working, the end joints likewise drawn to the interior radius, all beds and joints to be cut at least 4 inches back from the face; all the headers to be full and fairly worked on the lower bed, out to the extremity; and on the upper bed, and joists, only as much work to be put, as permit the masonry to bed and joint freely. All the external surface to be set three inches with prepared Roman or water cement.
Backing of Basement.
All to be backed with good flat bedded hammer dressed stone, in regular courses, either of one or two thicknesses, to correspond with the radius and level of front course, no course to be less than 6 inches, and none more than eight inches; every stone to be laid flush in well made mortar, and every course properly backed, grouted, and leveled with the first course, before another is begun.
All the basement of the first floor, 100 feet diameter, to be laid with neat chisel dressed paving stone; no stone to be less than 4 inches thick, properly bedded and grouted, all the joints to be close worked.
Base From 8 to 24 Feet in Length
All the external face to be radiated as before described, and of the same quality of workmanship; the course may here vary from 10 to 14 inches in height, all the internal surface to be perpendicular, smooth and finished, to admit of plaster work.
Shaft Above the Radiated Walls
The Masonry of that part of the work, to be two feet thick, and perpendicular, composed of good sound hammer dressed stone, free from shakes and shale, or slate clay, every stone to be placed on its natural bed, well bonded, backed, and laid flush in well tempered mortar, all the outside surface to be neatly pointed with proper cement.
The platform to be 20 feet in diameter, and 15 ? inches thick; composed of sound, well-seasoned Timber, of the most durable nature, dimensions of the moulding, projections, etc., may be taken from the drawing No. 2, all the superior to be laid with 2 1/2 inch plank, close jointed, and finished with a substantial hand rail, all the exposed surface to be covered with rolled lead, measuring 4 inches from the centre, and gutters three inches deep.
The top to be 70 feet from the foundation, the base to be an octagon, eight feet in diameter, to be securely rabbited into the upper surface of the platform, and neatly coated with lead, as also the dome, 5 feet in height.
The frame work and sashes to be composed of clean well seasoned stuff; glass to be the best Plate, run with vermillion to show a blood light. The interior, fitted with an Iron Chandelier, to contain 13 lights, to have 13 Patent reflectors, each 16 inches in diameter with fixtures and apparatus, ties and braces corresponding generally with the Lantern at Point Peters, Lake Ontario.
Doors and Windows
The entrance door to be double, two and a quarter inches thick, and well spiked; all the windows to be closely fitted, with outside shutters; the floors to be one and a half inch and five inches wide, close jointed, apertures to be left vacant in the masonry to insert the beams. A trap door, turning upon Iron hinges, to be fitted over the oil room; also four flights of steps, each nine feet in length, to be made, the steps to be portable, and fitted with Iron claws and sockets at their base. Four Ventilators must also be provided, one for each floor, each provided with a cut stone circle.
All the wood, iron and lead work to receive at least two coats of white lead paint, or McAdam's Mineral Composition. The dimensions not herein specified, may be taken from the designs, No. 1, 2 and 3, in the possession of the commissioners.
Under Which Proposals By Contract Are To Be Given In.
1st - The Plans and Specifications are alone to be the rule for making proposals.
2nd - Contractors are to make at their own expense all boats, scows, wharfs, and machinery of whatsoever kind that may be required for completing the work, also to sustain upon their own responsibility, all risk, injury or damage of every kind, sort, or description that may occur to the works from the commencement to their completion.
3rd - Those who give in proposals are required to find competent security for the proper and due performance of the contract.