The necessary water for the concrete shall be furnished by the Contractor without compensation. The construction of the concrete shall be started only after the subgrade has been approved by the Administration. Unless otherwise ordered for the work of paving, the wood blocks must be laid in straight parallel courses diagonal to the length of the street, properly and regularly rammed, and the joining to the sidewalks, tram rails, sewer covers, etc., must be done with five-cornered blocks or with the so-called half blocks. Between the individual rows of blocks (in the joints) strips of about % of an inch thick and 11⁄2 inches in height shall be laid and the joints filled with fine gravel and bituminous filler. The surface of the pavement shall have the proper cross-section and shall show no irregularities. After laying of the pavement, the surface shall be covered with an asphaltic coating and a layer of fine gravel to a depth of not more than 1/2 inch. The adjoining sidewalk shall not be moved due to the swelling of the blocks. If this should happen, the Contractor is required to make the necessary repairs at his own expense. § 3. Precautions in Regard to Traffic.—The Contractor is required to put up signs or necessary safety appliances to properly guard and illuminate the place at night during the full period of construction and to prevent any accidents and the theft of materials, without extra charge. § 4. Removal of Waste Material.-All refuse and waste materials arising from the work of the Contractor shall be removed without compensation. § 5. Computation of Work Performed.-The prices specified in Articles 2 and 3 include all daily wages. All openings and objects of 2/10 square meter and above in area are deducted from the wood block area. In new construction or total renewal of wood block pavement, including concrete foundations, the area of rails of street railways shall not be deducted. In cases where only one side of the rail is to be paved, one-half of the rail area shall be included in the area. In repair work the including of rail area is not allowed. In constructions paid by the day, which occur occasionally and at special request of the Administration and are shown by weekly lists, no foreman shall be included unless so ordered. For driveways to be constructed at house doors, no compensation will be given. Earth and pavement work shall be paid according to tariff number 20, taking consideration of the existing discount percentage. § 6. Time of Guarantee.-The Contractor is responsible for all repairs to be done, during the time as specified in papragraph 12; in repairs of the area 0.25 meters on both sides of rails, the Contractor is responsible for two months only, starting the day of completion, but has to furnish the necessary material for these repairs during the time of maintenance. In case of new construction, the Contractor is responsible for the pavement one year in the railroad area and five years for the rest of the pavement, this period beginning three months after the completion of the work. Item No. 1 General foreman, per hour.. 2 1 foreman, per hour.. I. WAGES 3 1 paving helper, per hour, including the furnishing of tools. 4 1 day laborer, per hour, other than No. 3... 5 For night work the compensation for the higher wages according to Section 19 of the general specifications will be paid. For supplying light 30 per cent. will be added to Items Nos. 1-4. Price $0.20 .16 .12 .08 Item II. NEW CONSTRUCTIONS Classification 6 1 square yard of wood block pavement, blocks to be 5 inches deep, 3 inches wide and from 5 to 8 inches long, made from soft pine or fir wood impregnated with zinc chloride and tar oil with as little odor as possible. The use of more than one kind of wood is not permitted. This pavement to be on a foundation of concrete 7 to 8 inches in thickness made of Portland cement (domestic brand) or slag cement of best quality, sand clean, fresh, free from earth and loam, and clean gravel in the proportion of 1:3:5, in which 73.7 lbs. of Portland cement or 55.3 lbs. of slag cement are to be used for 1 square yard, including all material and labor. (a) Including furnishing cement. (b) Not including furnishing cement. 7 1 square yard of wood block pavement paved with blocks 3 inches wide, 4 inches deep and from 5 to 8 inches long, otherwise as No. 6. (a) Including furnishing cement.. (b) Not including furnishing cement... 8 1 square yard of wood block pavement paved with blocks 3 inches deep, 3 inches wide and from 6 to 84 inches long on a cement foundation 6 inches thick in which 58.9 lbs. of Portland cement or 44.19 lbs. slag cement shall be taken for 1 square yard, otherwise as No. 6. (a) Including furnishing cement.... (b) Not including furnishing cement.. 9 1 square yard of wood block pavement paved with blocks 5 inches deep, 3 inches wide and from 6 to 8 inches long, made of pine or fir wood (the mixing of different kinds of wood on one job not being permitted) impregnated with creosote oil, on a cushion 1 inch thick of similar material over an old foundation of broken masonry or upon an existing concrete foundation, including all material and all work.... Price $3.02 2.69 2.62 2.28 2.18 1.92 2.34 10 1 square yard of wood block pavement paved with blocks 4 inches deep; 1.98 11 1 square yard of wood block pavement paved with blocks 3 inches deep; 1.68 Remarks concerning Items Nos. 9 to 11: Board of an inch thick shall be furnished by the Contractor for carpenter The filling up of small irregularities with Danube River sand is included (b) In pavements mentioned under Nos. 9, 10 and 11 Blocks exclusive of concrete, but including tearing up and removal of old material Item No. Remarks concerning Items 12 to 25: In repairs of openings less than 1 sq. meter in area, four such openings are 26 In repairs of the roadway and the outside strip of the railroad area which are undertaken without closing the street to traffic, on account of the more difficult work the prices of Nos. 12 to 25 shall be increased per square yard. $0.25 27. Should block made from fir wood of the Styrian mountains, impregnated with tar oil, be used, the prices of Nos. 12 to 18 shall be raised as follows: (a) Blocks 6 inches deep per square yard.. (b) Blocks 4 inches deep per square yard. 28 Repairs with Australian tallow-wood: .44 .34 .27 The prices for pavements with blocks 4 inches deep in Nos. 12 to 18 (a) In pavements with block at hand, decreased by. In pavements with old blocks the cleaning of the blocks is 29 Should the use of blocks of a depth different from that specified be made (a) For blocks up to 3 inches the same price as for 3-inch blocks. (b) For blocks of a greater depth than 3 inches up to and including 4 inches, the same price as for 4-inch blocks. (c) For blocks of a greater depth than 4 inches up to and including 5 inches, the same price as for 5-inch blocks. Separate compensation for the leveling of the roadbed on account of the use of 30 1 cubic yard of concrete in the proportion of 1 part Portland cement to 3 parts 1 cubic yard concrete. (I) Up to and including 2 cubic yards. (a) Including the furnishing of the cement.... 1.00 3.60 4.71 3.12 (II) More than 2 cubic yards. (a) Including the furnishing of the cement.. 3.95 2.35 31 1 cubic yard of concrete in the proportion of 1 part Portland cement to 2 parts of sand and 4 parts of gravel in which 501.6 lbs. of cement shall be taken for 1 cubic yard of concrete: (a) Including the furnishing of the cement. (b) Not including the furnishing of the cement.. 32 1 cubic yard of concrete in the proportion of 1 part Portland cement to 4 parts clean river sand in which 719 lbs. of Portland cement shall be used for 1 cubic yard of concrete: 333 (a) Including the furnishing of the cement. (b) Not including the furnishing of the cement. 1 cubic yard of concrete in the proportion of 1 part Portland cement, 3 parts (a) Including the furnishing of the cement. (b) Not including the furnishing of the cement.. 34 To take up 1 square yard of concrete and remove the old material, thickness of concrete up to: (a) 4 inches.. (b) More than 4 inches up to 6 inches. (c) More than 6 inches up to 8 inches. 35 Excavating a cubic yard of material from packed random stone foundation and removing it to a point alongside up to a distance of 50 meters... 36 Removing 1 cubic yard of broken foundation material with wagons. 37 Digging up 1 cubic yard of earth or foundation waste material.... 38 Delivering 1 cubic yard of finely-screened broken foundation material to the place of construction, including the loading and unloading, all labor, inspection, etc.... Price $5.40 3.12 6.46 3.19 7.45 3.19 18 .25 .42 .35 .68 .12 .76 39 Conveying 1 cubic yard of foundation waste material a distance of 50 meters and levelling it on the surface; otherwise as No. 38.... .12 40 Should the City furnish the wood blocks, the contractor shall carry the blocks from the yard to the place of construction free of charge. The following amounts will be deducted from the prices: (a) Wood blocks 5 inches high, impregnated with zinc chloride and 1.58 (b) Wood blocks 4 inches high, impregnated with zinc chloride and 1.21 (c) Wood blocks 3 inches high, impregnated with zinc chloride and .97 (d) Wood blocks 5 inches high, impregnated with creosote oil... (e) Wood blocks 4 inches high, impregnated with creosote oil. (f) Wood blocks 3 inches high, impregnated with creosote oil. 41 Taking up 1 square yard of wood blocks and depositing them alongside the street.... 43 Filling up the space between rails and block on both sides of the rails with a (a) Including the furnishing of the cement.... (b) Not including the furnishing of the cement. (II) With blocks 5 inches high. (a) Including the furnishing of the cement... 44 Roughening 1 square yard of old concrete foundation, including the carrying 45 Filling up 1 square yard of the granite belt adjoining the wood block pavement: (a) Not including the furnishing of the cement. 46 Covering 1 square yard of new or old wood block pavement with a mixture .09 .06 11 .09 .08 .09 .17 .38 .34 DIRECTION OF HIGHWAYS OF BRUSSELS CITY OF BRUSSELS, BELGIUM The present report upon the highways of Brussels has been divided into two parts. The first part gives general information (areas, class, quality, costs, advantages, etc.) relating to different methods of paving roadways in use in the capital. The second is devoted to a statement of the conditions prescribed for contractors carrying on the construction of different pavements. FIRST PART The highways of Brussels are divided into two classes: the greater highways whose maintenance is undertaken by the Government and the lesser highways, which include the streets maintained at the cost of the City. These streets are divided in accordance with their importance into principal ways and secondary ways. Classified from the point of view of different types of pavements in use, the total area of the lesser highways, which amounts to approximately 1,612,800 square yards, is divided into the following classification: It results from the above that the total area of carriageways paved in stone block must be made over or newly constructed within a period of forty years; macadamized areas must be totally resurfaced every seven years; asphalted areas ought to be entirely renovated every fourteen or fifteen years; and wood pavements every ten years. Stone Pavements The classes of material employed for stone pavements on carriageways are enumerated in the following table: Blocks of porphyry have a head of 4 x 6%1⁄2 inches to 51⁄2 inches of depth and a slight reduction in area towards the bottom. They are procured from Quenast, de Lessines, and a small quantity from Bierghes. Blocks of granite are of the same shape as above, but their depth is 64 inches. They are procured from the quarries of the Meuse River (from Dinant, Namur, Andenne, Yvoir), from those of l'Ourthe (Esneux, Poulseur, Comblain-au-Pont, Rivage, etc.), from those of Attres-Mévergnies and from Huppaye. |