Chapter 12.10
SIDEWALK SPECIFICATIONS
Sections:
12.10.030 Widths – Business district.
12.10.050 Widths – Courthouse Block.
12.10.060 Widths – All other properties.
12.10.080 Survey required for new construction.
12.10.010 Grades.
All sidewalks hereafter built within the corporate limits of the city of Burns shall be built on and in accordance with the grades now established by Ordinance No. 180 of said city, or such grades as may be hereafter established by ordinance. [Ord. 442 § 1, 1964]
12.10.020 Composition.
All sidewalks built within the corporate limits of the city of Burns shall be composed of cement (otherwise known as concrete walks) or cement pavers. Any sidewalk composed of cement pavers must receive the prior approval of the city manager (or his or her designee). [Ord. 11-816 § 2, 2011; Ord. 442 § 2, 1964]
12.10.030 Widths – Business district.
The width of all sidewalks hereafter constructed on Broadway Avenue and within the business district or the area bounded by the west line of Alvord Avenue, the south line of Monroe Street, the east line of Alder Avenue, and on the south line of D Street, and also all of Monroe Street west of Alvord Avenue to the east line of the intersection of Diamond Avenue and the lots adjacent thereto shall be 11.5 feet, beginning at the property line and a six-inch curb, composed of cement or concrete according to the specifications hereinafter set forth for cement or concrete walks, curbs, and gutters, and no new walk hereafter constructed shall be built or constructed of any material other than cement or concrete, and the use of any other material in any sidewalk in said business district is hereby prohibited; provided, however, that existing walks may be patched with appropriate materials as approved by the engineer and/or the common council. [Ord. 442 § 3, 1964]
12.10.040 Curbs.
Curbs shall be located to conform with the width of each particular street as designated by the common council. [Ord. 442 § 4, 1964]
12.10.050 Widths – Courthouse Block.
The width of the sidewalk on all four sides of Block 36 of the First Addition to the city of Burns, otherwise known as the Courthouse Block, shall be nine feet, beginning at the property line, and extending a distance of nine feet toward the curbline with a six-inch curb. [Ord. 442 § 5, 1964]
12.10.060 Widths – All other properties.
The width of the sidewalk along all other property and along all other streets, excepting said Block 36 and said business district, shall be five feet, the inner edge of which shall be on the property line; provided, however, the common council may, by resolution, permit a sidewalk to be located not more than four feet from the property line if, in its opinion, such a change is necessary in order that the sidewalks conform properly. [Ord. 442 § 6, 1964]
12.10.070 Slope requirements.
There shall be a slope in all sidewalks from the inner toward the outer edge thereof one-fourth inch to the foot. [Ord. 442 § 7, 1964]
12.10.080 Survey required for new construction.
Persons constructing sidewalks in areas where none have previously existed are hereby required to furnish the city with a certificate of a licensed surveyor or engineer proving a survey of the sidewalk prior to construction. [Ord. 442 § 8, 1964]
12.10.090 Specifications.
The specifications for the construction of all cement or concrete sidewalks, curbs, and gutters shall be as follows:
(1) Excavation. The subsoil shall be excavated to a depth of four inches below the finished grade as indicated by the stakes set by the engineer and shall be thoroughly settled with water and compressed by wetting and tamping. All spongy and seamy material and all sods, roots, rubbish, and boulders shall be removed and replaced with suitable material according to the specifications for embankment.
(2) Embankment. All embankments under concrete walks shall be made of suitable material, spread in layers not exceeding nine inches in thickness; each layer shall be thoroughly flushed with water and tamped and rolled until a hard, unyielding surface is obtained; the side slopes of all embankments shall be not steeper than one and one-half to one slope and all such slopes shall be neatly finished; the top of all embankments shall extend at least one foot beyond the walk on either side. Before starting embankments, the original ground surface shall be well furrowed in such a manner as to form a bond between the original ground and the embankment. In both excavation and embankment the finished subgrade shall be exactly four inches below the parallel to the grade of the finished walk, as indicated by the marks set by the engineer, and it shall be thoroughly wetted and smoothed down just before placing the concrete.
(3) Forms. The contractor shall provide forms of such shape and dimensions as may be required; they shall be of surfaced lumber, or other materials, subject to the approval of the engineer. Forms of lumber shall be not less than one and three-fourths inches in thickness, and they shall be thoroughly wetted before the concrete is placed. Metal forms shall be as smooth as planed lumber and shall be coated with grease, oil, or soap, or some mixture suitable to the engineer. Forms that have become warped, cracked, checked, bent, or in any way defective shall not be used on the work. Sidewalks which vary more than one-half inch in any direction from the grades and marks set by the engineer shall be taken up by the contractor and relaid to the proper grade and line.
(4) Cement. The cement shall be true portland cement, dry and free from lumps and all foreign material. It shall be cement which usage has proved to possess the proper qualifications and uniformity for the work intended. It shall be delivered on the work in the original packages, in good condition, properly labeled, and must be well protected from the rain and dampness. When so required, the cement shall be delivered to the work in advance of order to afford an opportunity for making tests before the cement shall be used. Each package shall be of such a quantity as to meet the requirement of the specifications for portland cement of the American Society of Testing Materials and adopted by the National Society of Cement Users.
(5) Sand. The sand shall be clean and sharp, free from loam, clay, or earthy particles. It shall be of such size that 95 percent will pass a one-fourth inch screen and not more than 33 percent will pass a 30 sieve. No more than 50 percent of crushed rock shall be used for sand.
(6) Gravel. The gravel used shall consist of clean, hard and sound stoned pebbles, having a uniform graduation from coarse to fine material which will be retained in a one-fourth inch screen and will pass a one and one-half inch ring, which shall be classed as stone. No material which will not pass a one and one-half inch ring shall be used on the work. No more than 50 percent of crushed rock shall be used for gravel.
(7) Mixture. The concrete shall consist of a mixture of one part of portland cement, two parts sand, and three parts gravel, each article to be of the quality herein specified. Large batch mix shall be 650 pounds of cement, 1,050 pounds of sand, and 1,650 pounds of gravel, or three parts cement, five parts sand, and eight parts gravel. Air entrainment agents as now approved or may hereafter be approved by the state highway department shall be added according to the manufacturer’s specifications on file in the engineer’s office.
(8) Mixing. If a mechanical mixer is used, it shall be of a batch type approved by the engineer and one which admits of the accurate measuring of materials. The amount of water used and the number of revolutions or period of mixing shall be as directed by the street superintendent. Final mixture shall pass a four-inch slump test as determined by the engineer.
(9) Placing. The concrete shall be spread upon the foundation, which has been thoroughly compacted and wet down, to a depth of not less than four inches. The correct proportions of sand and gravel shall be thoroughly mixed dry until of uniform color and then sufficient water added to make a mortar of proper consistency. It shall be carefully smoothed to a uniform surface which must not be disturbed after the first settling takes place.
(10) Surface. The wearing surface shall be roughened with brush or in such a manner as the engineer may direct. All concrete walks shall have joints extending entirely through the concrete base and wearing surface. These joints shall be formed with a metal bar or plate not less than one-fourth inch in thickness. After tamping has been completed, the bar or plate shall be removed and the joint filled within one-half inch of the surface of the finished walk with fine sand, hot asphalt, paver’s patch, or other suitable material. The joints shall not be more than 10 feet apart. V-shaped grooves one-fourth inch deep shall be made with a suitable tool, marking the pavement into blocks not over five feet in either dimension. Such grooves shall be made over all expansion joints. At street intersections the contractor will be required to stamp the names of the streets or avenues in the walk in letters not less than one and one-half inches high and one-fourth inch deep. Retempering of concrete or mortar will not be permitted. All concrete or mortar that fails to show proper bond, or that fails to set after, in the opinion of the engineer, it has been allowed sufficient time, shall be taken up and replaced by the contractor, at his own expense, with new concrete or mortar of the proper quality. Concrete shall not be mixed or deposited when the temperature is below 40 degrees Fahrenheit unless special precautions are taken to avoid the use of materials containing frost and the work protected in manner satisfactory to the engineer until the concrete has thoroughly hardened.
(11) Treatment of Finished Walk. When the sidewalk is completed, it shall be covered with suitable material, acceptable to the engineer, and shall be kept constantly moist until thoroughly set, and in no case shall the walk be uncovered or opened in less time than three days from the time of completion. The contractor shall build and maintain sufficient barricades to prevent injury to or use of sidewalks until they are thoroughly set. When a sidewalk is thoroughly set, the contractor shall uncover same and remove all excavated material not required for filling in park strips, and all other waste material or rubbish resulting from the construction of the sidewalk. Measurements of concrete sidewalks shall be in the slopes. Contractors who submitted bids for the construction of concrete sidewalks shall name a price per square foot for constructing walk and a price per cubic yard for excavation and embankment. The price of excavating and embankment is to include the removal of all waste materials as above specified. Embankment will be measured in place.
(12) Concrete Curb and Gutter. The preparation of subgrade for curb and gutter construction shall conform to the specifications for subgrade given under concrete sidewalk construction. The form used shall comply with the specifications for sidewalk forms against which the face of the curb shall be built, shall be carefully coated with grease, soap, or some other mixture acceptable to the engineer to ensure a smooth surface. The face and top of curb may be painted with neat cement grout but no plastering of curb will be permitted.
(13) Dimensions. In the business zones of the city, the inside or property side of the curb shall be vertical. It shall be 12 inches in height. The thickness of the curb at the base shall be eight inches and the face or street side shall be constructed with a batter which shall give a thickness of six inches at the top. The outer edges of the curb shall be rounded to conform to a radius of one inch. Concrete gutters within the area defined by BMC 12.10.030 shall be 18 inches in width and have a thickness of six inches. They shall have a slope of two inches towards the curb and the depth of the gutter from the top of the curb shall be six inches. All other areas within the city, unless specified otherwise, shall be as follows: Gutters shall be 12 inches in width and have a thickness of six inches. They shall have a slope of one and one-half inches towards the curb and the depth of the gutter from the top of the curb shall be six inches. Other dimensions of the curb shall be the same as defined above.
(14) Curb and Gutter Materials. The materials used shall be the same quality as those specified for concrete walks.
(15) Curb and Gutter Mixtures. The concrete used in curbs and gutters shall consist of one part cement, two parts sand, and three parts gravel.
(16) Curb and Gutter Placing. As soon as the concrete is mixed, it shall be placed in forms, a spud or mechanical device being used to force the coarser portions of the mixture back from the face of the curb and allow the mortar to come in direct contact with the forms. The coarser portions shall be forced down from the top of the curb and the mortar brought to the surface. The top of the curb shall be troweled to a smooth surface as obtained with two-coat work. The gutter shall be laid in the same manner, the coarser portions forced down and the mortar brought to the top and the surface troweled to a smooth surface.
(17) Curb and Gutter Expansion Joints. Concrete curbs and gutters shall have expansion joints entirely through the subgrade, similar to those specified for cement walks. These joints shall not be more than 10 feet apart. The specifications covering the treatment of finished walk shall apply also to curb and gutter construction. The price bid for constructing curb and gutter or combined curb and gutter shall be per lineal foot, measured along the face of the curb. [Ord. 442 § 9, 1964]
12.10.100 Cement pavers.
Notwithstanding anything contained in this chapter to the contrary, no sidewalk composed of cement pavers shall be built unless and until the person constructing the sidewalk obtains the city manager’s (or his or her designee’s) prior written approval. All sidewalks composed of cement pavers will be constructed consistent and in accordance with the grade, width, slope, and other specifications that the city manager (or his or her designee) may impose, which grade, width, slope, and other specifications may include, without limitation, those applicable to cement, concrete walks under this chapter. [Ord. 11-816 § 3, 2011]