BILL OF MATERIAL FOR DESIGN NO. 4.

90 joists 18 ft. long, 2 by 12 inches: 60 joists 18 ft. long, 2 by 8 inches; 30 joists 16 ft. long, 2 by 8 inches; 64 rafters 20 ft. long, 2 by 6 inches; 30 collar beams 18 ft. long, 1% by 6 inches; 4 wall plates 28 ft. long, 3 by 12 inches; 56 studs 14 ft. long, 2 by 4 inches; 16 pieces lintels 16 ft. long, 4 by 4 inches, beams 36 ft. long, 8 by 10 inches; 2 sills 26 ft. long, 10 by 12 inches; 4 truss braces 20 ft. long, 4 by 8 inches; 2,600 ft. 1 inch white ash flooring; 2,500 ft. inch board, 24 clear; 200 ft. 11⁄2 inch plank, 2d clear; 500 ft. 1 inch plank, 2d clear; 1,000 ft. 2 inch plank, 2d clear; 2,300 ft. inch common boards; 18,000 shing es; 100 pounds 20penny nails; 200 pounds 10-penny nails; 100 pounds 4-penny nails; 50 pounds 8-penny nails, casing; 50 pounds 10-penny nails, casing; 4 boxes glass, 10 by 20; 6 five inch mortice locks; 6 white mineral knobs; 1 gross 11⁄2 inch screws; 1 gross 1 inch screws; 1 gross 3⁄4 inch screws; 2 doz. pulleys; 2 gross hooks; 9 pair butts, 4 by 4 inches; 57,000 brick; 80 perch stone; 250 bushels lime; 350 yds. plastering; 15 galls. linseed oil; 300 lbs. white lead.

SPECIFICATION FOR DESIGN NO. 4.

SIZE OF BUILDING.-Entire building 36 ft. by 52, measuring outside, one story in height, 13 ft. in the clear. Building is divided into two school-rooms, connected by sliding doors. There are two opposite entrances and halls, each 16 ft. wide, projecting 2 ft. from main building, and forming an angle within, as shown on plans.

FOUNDATIONS.-All foundations to extend below the action of the frost, and 2% feet above the common grade. All foundations are to be 20 inches thick, laid with good stone, in good stone mortar, made of good lime and clean sand.

Trenches are to be dug, and the stone that are laid in them, are to be groated with water lime.

BRICK-WORK.-Walls are to be of brick, one foot thick, to extend from the underside of floor joist to upperside of ceiling joist, water-table and window-cap to be of brick. All walls to be laid with best quality of brick, in good mortar, made of good stone lime and clean sand JOISTS.-The floor joists must be 2 by 12 inches, in two tiers, and double tenon into a timber 10 by 12 inches, passing through the length of building in the center. Each tier of joist is to be supported by a tier of herring bone bridging through the center. Ceiling joist must be in three tier, tenon into two truss beams passing crosswise of building. Size of joists, 2 by 8 inches; beams, 8 by 10. All joists placod 16 inches from center to

center.

RAFTERS.-Rafters will be 2 by 6 inches, placed 2 feet from center to center. Partitions will be of 2 by 6 scantling, placed 1 foot from center.

ROOF.-Roof is to be of the style shown on plans properly secured, sheathed over with good common boards laid even, and shingled with best quality of 18 inch shingles.

CORNICE. The cornice is to be plain and of the style shown on plan. Belfry is to be of the style shown on plan.

WINDOWS.-Windows to be made with mullion frames, 16 lights, 10 by 20 inch glass. Sash 14 inches thick, doubly hung with axle pulleys and cast iron weights.

DOORS.-Outside doors are to be constructed with side and head lights, to light entrances. All doors will be 14 inches thick, and four pannels. Sliding doors will be made to correspond with other doors.

Opening for sliding doors will be 15 feet wide and 10 feet high. Outside doors will be 3 feet 6 inches wide by 8 feet 6 inches high. Other doors will be 3 feet wide and 8 feet 6 inches high.

FLOOR.-Floor will be laid with good 11⁄4 inch white ash flooring, matched and tongued, and blind nailed to each joist.

CASINGS.-All doors and windows to be cased with seven inch casings, with quarter round moulding on the inside edge. Base is to be 11 inches high, beveled 1⁄2 an inch on the edge.

There will be three tiers of wall strip, 3 inches wide, in the entrances, to receive ward

robe hooks.

CEILING.-School-rooms and halls to be ceiled with good quality pine ceiling, not more than 6 inches wide, double beaded, matched and tongued, and blind nailed.

CHIMNEYS.-There are to be two chimneys placed as shown on plans, with flue of proper size to obtain good draft; there will also be an extra flue in each chimney for the passage of foul air. The chimneys are to extend at least 2 feet below ceiling, and be provided with iron thimbles for the reception of the stove-pipes.

PLASTERING.-Side walls to be plastered on the brick two coat-work. Last coat, float finish. Partitions to be lathed and plastered three coat-work; last coat, float finish.

PAINTING.-All inside casings, doors, base and ceilings to be painted three coats of white lead and linseed oil. All outside work to be painted three coats of the same, of such shade, of color as may be desired.

GLAZING.-Sash to be painted three coats white lead and linseed oil, and glazed with best quality of single thick American glass, properly bradded and puttied.

VENTIDUCTS.-There are to be two ventiducts, 10 by 16 inches, leading under stoves. Alse two foul air flues to communicate with ventilating flue in chimneys. These flues to begin at the floor and to be made perfectly tight, with a good register in each, close to the floor.

DESIGN NO. V.

UNION SCHOOL-HOUSE.

The front and side elevations of this design are given in the accompanying plate. It exhibits a building of great beauty in design and of equal convenience in plan. It is designed for the accommodation of about 280 pupils, but admits of enlargement to provide for a larger number. Several houses on this plan have been erected, or are now in process of erection in this State. It provides ample and convenient entrance halls for each sex, and all of the school rooms are easily accessible from each of these halls. Each school-room is admirably lighted with rear and side lights, and the general distribution of room favors an easy and orderly movement of the entire school. By an enlargement of the halls in width, recitation rooms of considerable size may be secured on the upper floor for the Grammar and High School Departments, and an additional primary school-room is in some instances constructed in the basement story, which extends five or six feet above ground. A third story has, in one case, been added for a public hall. In a house on this plan, erected in Grass Lake, the two upper school-rooms are connected by sliding doors.

The following are the ground plans of the first and second floors:

signed for the primary and the other for the intermediate grade. The seating is shown for only the pri mary room; the other is to be seated in the same manner, but with

Each desk and seat will ocfeet by 2 feet and 3 inches,

seats and desks a little higher. cupy, on the floor, a space of 3 giving a space in rear end of the room of 3 feet in width, and 10 feet in front. The side aisles, next the walls, will be two and a half feet wide, and the middle aisles, 2 feet each. An extra desk may be added, if necessary, to each row, affording seats for 10 more pupils. These rooms should be amply provided with black-boards on all the vacant spaces on the wall, around the room. Wardrobe closets are to be made in the rear end of the halls, under the stairs, six feet wide. The positions of the ventilating flues and chimneys are marked by the letters V, V, and C, C. The rooms may be warmed either by furnaces or by stoves. In the specifications that follow, it is supposed that stoves will be used.