HomeMy Public PortalAbout180911_Richmond_ROW_Specs.pdfConstruction
Specifications for
Right-of-Way
Excavations
Division of Public Works & Engineering
CITY OF RICHMOND, INDIANA 50 North 5th Street, Richmond, IN 47374
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Section 1 ‐ Exceptions
Any variation to these Standard Construction Specifications must be reviewed and approved on a
case by case basis by the City of Richmond Engineering Division. This approval must be obtained
prior to beginning work on the non‐conforming aspect of a project.
Section 2 ‐ General Specifications
Any excavation within the City of Richmond Right‐of‐Way shall conform to the following
specifications:
1. The use of pervious asphalt is not allowed in any City of Richmond Right of Way
2. The use of Rebar, re‐enforcing mesh, and metal dowels in a sidewalk or street is acceptable
with the prior approval of the Engineering Division.
3. Any excavation deeper than 2 inches shall be fenced or barricaded. This shall be done in such
a manner that will make the area inaccessible to vehicular or pedestrian traffic.
4. Permit Holder shall be responsible for knowing and adhering to any applicable IOSHA
regulations. In particular, any excavation over 5 feet in depth must be properly shored or
sloped in a manner compliant with I.O.S.H.A. standards. When work areas are deemed
dangerous by the Engineering Division, the party performing the work will be notified of safety
violations (this could include a STOP WORK order). Safety violations must be corrected
immediately. Any violations can be reported to I.O.S.H.A. at the discretion of the Engineering
Division.
5. Any placement of a new facility, or backfill and cover of an existing facility in a City of
Richmond Right of Way must meet the requirements of the owner of the line or facility as far
as trench details, bedding, and amount of cover. It shall be the responsibility of the Permit
Holder to check with the owner of any facility being installed or encountered during
excavation for their construction requirements.
6. All edges of an excavation in any asphalt or concrete surface shall be saw cut. All saw cuts in a
street surface shall be made perpendicular or parallel to the centerline of the street. No 45
degree cuts will be allowed unless previously approved by the Engineering Division.
7. All street excavations shall be made with a minimum 12 inch cutback around the perimeter of
the trench. This provides a shelf for the concrete cap to rest upon. In the case that the
backfill material settles, this will prevent the road surface from sinking. The cutback shall be as
deep as the concrete / asphalt layers, and 12 inches wide from the saw cut edge extending
into the trench. Detailed drawings of trench sections can be found in “Section 6 – Standard
Detail Drawings”.
8. Excavations in traffic lanes, parking lanes, or bike lanes shall be left open overnight only with
the explicit permission of the Engineering Division. Unless this permission is granted,
unfinished excavations shall be backfilled or plated for overnight usage by vehicular traffic.
Plates shall be tacked in place to prevent movement. Use of plates is required on all arterial
and collector streets.
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9. Historical Items and Survey Markers
9.1. Care must be taken to not damage historical items and survey markers that exist within
the right‐of‐ways of varying streets throughout Richmond. Historical items include, but
are not limited to, inset brass street names in sidewalks, star brick sidewalks, limestone
curb, limestone retaining walls, and limestone walk‐outs. When any of these items are
encountered, they must be preserved and protected from damage and/or theft. If
damage or theft occur, it shall be the responsibility of the contractor to replace the items.
9.2. Inset brass street names in sidewalks shall be removed by saw cutting around the names
on all four sides and removing the name as one (1) piece. The name shall be stored in a
secure location for re‐install when the sidewalk is repaired. Care must be taken when re‐
installing the name in new concrete, so that it is flush with the new concrete, and shall
also be cleaned immediately of any residue from the new concrete. Inset street names
shall be re‐installed in an orientation where they read correctly as viewed, when facing
the intersecting street they designate (see detail on Page 17). If an inset street name is in
deteriorating condition prior to construction, the contractor shall contact the Engineer to
decide a course of action prior to disturbing it.
9.3. Star brick and items made of limestone (curb, sidewalk, walk‐outs, retaining walls, etc.)
shall be carefully removed and stored for later re‐install. If any of these items are in
deteriorating condition prior to construction, the contractor shall contact the Engineer to
decide a course of action prior to disturbing them.
9.4. Survey markers encountered shall be protected at all times from damage and movement.
If markers cannot be avoided during construction the contractor shall hire a registered
land surveyor to record the existing marker and re‐establish it once final repairs are
complete.
10. Backfill
10.1. All excavations made in, on, or under any street surface, or areas outside the roadway
that are under existing improvements, or will be under a known future improvement,
shall be backfilled with compacted granular backfill (Type “B” Bedding or # 53 stone) or
flowable fill. Granular backfill shall be compacted in lifts of not more than six (6) inches
to a minimum of 95%. Flowable fill shall have a compressive strength of 50 – 150 PSI
and shall be supplied by a provider approved by the Director of Public Works &
Engineering. Approval shall be based on INDOT prequalification and submittal of
acceptable mix designs. All other areas shall be backfilled with compacted soil (spoils
are allowed) then topped with six (6) inches of clean rock‐free topsoil and seeded and
mulched.
10.2. The use of flooding as a means of obtaining compaction of backfill shall not be allowed.
10.3. Flowable fill:
10.3.1. Flowable fill used within a City of Richmond ROW shall meet all current INDOT
specifications and shall have a compressive strength of 50 – 150 PSI. Flowable fill
shall be supplied by a provider approved by the Director of Public Works &
Engineering. Approval shall be based on INDOT prequalification and submittal of
acceptable mix designs.
10.3.2. Placement: The mixture shall be discharged from mixing equipment by a
reasonable means into the space to be filled. Backfilling shall be as continuous as
is practicable. This means that backfilling the excavation with flowable fill should
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be done in one lift if possible. Concrete may be placed on fill as soon as bleeding
water has subsided. All pavements shall be placed according to flowable fill
manufacturer’s recommendations. Flowable fill placement shall begin at the top
of bedding material. Flowable fill backfill for cast‐in place or precast structures
such as, but not limited to, manholes, transition structures, junction structures,
vaults, inlets and reinforced concrete box culverts, shall start at the subgrade for
the structure.
10.3.3. Limitations: Flowable fill shall be protected from freezing until the material has
stiffened and bleeding water subsided. As the temperature nears freezing,
additional curing time may be needed.
10.4. Earth backfill:
10.4.1. Earth backfill may be used in locations not requiring flowable fill or aggregate
backfill. This would be any area not under a street surface, curb, driveway/alley
apron, or sidewalk. The earth backfill shall be made compatible with the adjacent
surface. In established lawn areas, this includes compacting in not less than two
lifts for each five (5) feet of depth of the cut, topping off with topsoil, fertilizing,
seeding, mulching and restoring all contours. If the slope is greater than 3:1,
restoration of the grass shall be made by sodding or with straw mats.
11. No portion of pipe, conduit, line or other conveyance of utility service shall be placed less than
12 inches below the bottom of the existing pavement base or subgrade.
12. It is Recommended that all lines, pipes, conduits, etc. be marked with standard marker tape
12 to 18 inches above an underground facility.
13. The Permit Holder shall repair or replace all damaged or removed traffic control devices in
accordance with City of Richmond standards to the pre‐construction condition and extent as
required by the Engineering Division.
14. The following procedures shall be followed during construction that utilizes trenchless
technologies such as pipe‐jacking, directional boring, or tunneling:
14.1. Prior to directional boring, all underground facilities must be located in advance of
construction by potholing when crossing over or under them, or when a utility line is
running in the same direction and is within five (5) feet of the proposed facility.
14.2. Prior to beginning scheduled boring operations, plans for the proposed construction
must be submitted to the Engineering Division for approval.
14.3. Construction shall be made in such a manner that it shall not weaken, damage, or
undermine any existing street, curb, driveway, alley, or sidewalk.
14.4. The location of the boring pits shall be of sufficient distance from the roadway to
prevent undermining of the curb, gutter, or shoulder section (normally 5 feet).
14.5. The pit shall be dug to a depth sufficient to maintain a minimum boring depth of 24
inches below the traffic surface.
14.6. Jetting types of boring equipment will not be allowed.
14.7. Over cutting in excess of approximately two (2) inches shall be remedied by pressure
grouting the entire length of the installation.
14.8. The pits or trenches excavated to facilitate this operation shall be backfilled
immediately after work has been completed.
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14.9. The contractor performing the work shall be able to locate the bore head at all times.
14.10. Any and all surface heave or settlement, or related problems caused by the trenchless
method, shall be corrected by the Permit Holder at their expense, to the satisfaction
of the Engineering Division. Any annular region or other cavity remaining between
the subgrade and the conduit or utility shall be pressure grouted.
14.11. All drilling fluids shall be removed and disposed of properly.
15. Repair of established lawns shall consist of the following:
15.1. In established lawn areas all repairs shall be restored to within six (6) inches of the
surface by compacting backfill in 2 ½ ft. lifts. The excavation is to be topped off with a
minimum of six (6) inches of topsoil restoring all contours.
15.2. The area shall be fertilized, seeded and mulched. If the slope is greater than 3:1 or if
the area has previously been sodded, restoration of the grass shall be made by
sodding or with straw mats.
15.3. Fertilizer shall be applied at the rate of 800 lb. per acre for seeding and 400 lb. per
acre under sod. Fertilizer shall be a standard commercial fertilizer with an analysis of
12‐12‐12. Substitutes may be approved upon request, however, the substitute is
required to contain balanced ingredients such as 10‐10‐10, and the application rate
shall be adjusted to compensate for the change.
15.4. Seed shall be an INDOT Type “U” mixture, or equal, with an application rate of 200 lb.
per acre. The mixture consists of the following grasses:
15.4.1. 100 lb. / ac. of a 4‐way blend of turf type tall fescue
15.4.2. 50 lb. / ac. of Creeping Red Fescue
15.4.3. 45 lb. / ac. Perennial Ryegrass.
15.4.4. 5 lb. / ac. White Dutch Clover
15.5. Mulching Material – When mulching material (straw) is used, it shall be applied at a
rate of 2 t. / ac., and shall be placed within 24 hours after seeding. Mulching material
shall be held in place by applying additional thin, clean layer of topsoil on top of the
material or by other means as approved by the Engineering Division. Mulch shall be
water thoroughly once procedures to hold it in place have been completed. Watering
shall not disturb the seed or soil beneath the mulching material. From June 1st to
September 15th, a second thorough watering should be applied 21 days after seeding,
unless adequate rainfall (1/2” or more) has occurred during that time period.
15.6. Straw Mat ‐ When straw mat is required, it shall be placed within 24 hours after
seeding. The ground shall be prepared as described above. After the area has been
properly shaped, fertilized, and seeded, the straw mat shall be unrolled over the
affected or designated area so that the plastic mesh is on top and the straw fibers are
snugly and uniformly in contact with the soil surface without stretching the material.
The rolls shall be butted snugly together and stapled in place. The staples shall be
driven through the blanket at a 90° angle to the plane of the ground surface. Each
staple shall anchor the plastic mesh. The staples shall be spaced at approximately 3 ft.
increments, both longitudinally and transversely. For placement on slopes, the straw
mat shall be placed with the length running from the top of slope to the toe of slope
and shall extend a minimum of 3 ft. over the crown of the slope. On slope
applications, 6 staples shall be installed across the uphill end of the roll. The downhill
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ends of the lowermost rolls across the slope shall also be anchored with 6 staples,
placed on uniform spacing. For placement in ditch lines, the straw mat shall be
unrolled parallel to the centerline of the ditch. The mat shall be placed so that there
are no longitudinal seams within 24 in. of the bottom centerline of the ditch. In ditch
lines, 6 staples shall be placed at uniform spacing across the upstream end of each
roll. Straw mat shall consist of a machine produced mat consisting of at least 90% of
the total dry mass being clean straw from agricultural crops, with the exception that
up to 30% of the total dry mass may be coconut fibers in lieu of an equal percentage
of straw. Paper or paper related products shall not be permitted as component in the
straw mat. The straw shall be evenly distributed throughout the mat to form a
thickness of 1/2 in. ± 1/8 in. The top side of the mat shall be covered with a
photodegradable/biodegradable plastic mesh which shall be substantially adhered to
the straw by a knitting process using photodegradable/biodegradable thread. The rolls
shall be packaged with suitable protection for outdoor storage at a construction site in
a manner which protects them from biodegradation prior to use. The average dry
mass of the straw shall not be less than 0.7 lb. / sq. yd. The minimum roll width shall
be 6 ft.
15.7. Preparation of Ground Before Sodding ‐ The area to be sodded shall be smooth,
uniform, and shall be in accordance with the required cross section. Surfaces prepared
for sod shall be of sufficient depth below unseated areas that newly laid sod shall be
in accordance with the surrounding surface. After the area has been prepared for sod,
fertilizer shall be applied at the rate of 400 lb. / ac. The surface shall be loosened to a
depth of 1 to 2 in. and then raked before the sod is placed. All clods, lumps, boulders,
or waste material shall be removed satisfactorily. In areas where the above method of
preparation is impracticable, a different method may be approved.
15.8. Laying Sod ‐ Sod strips shall be laid in the designated direction. The sod shall be fitted
to the surrounding grade and fixed objects. The sod strips shall be butted together
closely to avoid open joints. Overlapping of sod will not be allowed. After laying and
initial watering, the sod shall be tamped or rolled as directed to ensure contact with
the soil underneath and shall be in accordance with the surrounding surface. After
compaction, the sod shall present a smooth even surface free from lumps and
depressions. On slopes of 3:1 or flatter, the use of broken sod strips will be allowed.
Where broken pieces are laid, no overlaps will be allowed. Sod placed in ditches with
grades steeper than 1% and on slopes 3:1 and steeper shall be pegged. The pegs shall
be spaced not over 2 ft apart in each strip measured lengthwise of the strip. Pegs shall
be driven down until no more than 1 in. protrudes above the surface of the sod.
Grades and slopes flatter than specified herein shall be pegged as directed. Pegs shall
be wood at least 1/2 in. by 3/4 in. by 12 in. In lieu of pegs, T‐shaped wire pins may be
used. The pins shall be machine bent from eight gage low carbon steel with a
minimum of an 8 in. leg, a 4 in. head, and a 1 in. secondary drive. Pins shall be driven
flush with the top of the sod.
15.9. Watering Sod ‐ Sod shall be watered immediately after laying. The amount of
watering shall be sufficient to saturate the sod and the upper few inches of the
underlying soil. The sod shall be watered once every day of the first week, once every
second day of the second week, once every third day of the third week, and once a
week thereafter. Sod shall be maintained for a minimum of four weeks from the time
it is laid before being accepted. During periods of ample rainfall, watering may be
modified to simulate the above schedule.
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15.10. At thirty (30) days after completion and restoration of a cut in a portion of an
established lawn within the City of Richmond Right‐of‐Way, the permit holder shall
inspect the cut. If it has settled below the adjacent surface, the permit holder will fill
and compact the settled area and reseed or resod. The permit holder shall inspect the
cut again within thirty (30) days following the second restoration. If the cut has again
settled below the adjacent surface, shall fill and compact the settled area and reseed
or resod. Such inspections and fillings shall continue every thirty (30) days until an
inspection discloses that the cut has not settled more than two (2) inches below the
adjacent surface in any thirty (30) day period. The permit holders bond will not be
released until the seeded area shows seventy‐five (75%) percent regrowth and meets
settling requirement above.
16. Any work in which untested and unaccepted materials are used without written approval by
the Engineering Division shall be removed and replaced at the Permit Holders expense.
17. The maximum length of open trench permissible at any time shall not exceed 500 lineal feet,
for pavement removal, excavation, construction, backfilling, patching and all other
construction activities without the permission of the Engineering Division.
18. All street level accesses (manholes, vaults, etc.), shall be of heavy‐ duty construction, capable
of safely supporting anticipated maintenance equipment and vehicular traffic, and shall
conform to the finished grade of the surface it is in.
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Section 3 – Repair Specifications
1. General Requirements:
All excavation repairs shall conform to the following standards. There may be additional
requirements based on the location of the repair.
1.1. The restoration of the surface of all excavations shall be completed within 30 days of the date
the excavation was made by such methods and in such manner that the plane of the surface of
the repair, at the time of completion and thereafter, will be flush with all contiguous surfaces
and will create no dissymmetry with the topography of the surrounding surface. In addition,
the final surface elevation shall be at the same elevation as the original surface, unless
otherwise approved by the Engineering Division.
1.2. Asphalt surface repairs may utilize milling, infrared or future technologies approved by the
Engineering Division, unless a specific method is required by the permit as determined during
the review of the planned work.
1.3. All materials, unless specifically stated otherwise, shall be in accordance with current Indiana
Department of Transportation Standard Specifications.
1.4. All restorations shall be made in accordance with ADA Standards for Accessible Designs, even if
the original condition was not in compliance. In some instances where the original condition
was not in compliance, it may be necessary and required to expand the repair area in order to
attain ADA required grades. The City of Richmond reserves the right to require adherence to
interim ADA rules created by the Division of Justice Access Board when it is in the best interest
of the public to do so.
1.5. Lane striping, crosswalks, stop bars, tactile indicators, or other surface markings shall be
replaced with similar methods and materials.
1.6. All saw cut edges of existing asphalt, as well as the surface of any concrete that will be covered
with asphalt, shall be tack coated. Polymeric asphalt joint tape (PAJT, T‐Bond) can be used on
joints.
2. Repair of core holes and utility potholes
2.1. For core holes exceeding one‐foot depth, the hole shall be filled with a non‐shrink grout having
a compressive strength of 4000 psi after 28 days. The grout material used shall be compatible
with the existing surface in color and texture and shall seal the hole to prevent the intrusion of
moisture into the subgrade.
2.2. For core holes not exceeding one‐foot depth, which pass into the subgrade, the subgrade shall
be tamped to provide pavement support first and the hole shall be filled with the required
non‐shrink grouts as in 2.1 above.
2.3. Excavations for potholing to expose underground utilities shall be backfilled with flowable fill.
2.4. On asphalt streets, hot mix fine graded surface course asphaltic concrete tamped in place shall
be used in place of the non‐shrink grout and the edges shall be sealed.
2.5. The surface of the completed repair shall have no indentions, pockets or recesses that may
trap and hold water, nor have bumps or high places but the completed surface shall match the
grade of the existing pavement surface.
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2.6. Repair of cored holes 12‐inches in diameter or less for subsurface geotechnical investigation,
materials testing, or utility locations are not subject to the repair extent standards, but shall be
repaired as noted above.
3. Repair of Concrete Streets and Alleys
3.1. Two methods of concrete surface removal are acceptable:
3.1.1. All cuts shall be sawed to one‐third (1/3) the depth of the pavement with a concrete
saw. A minimum saw cut depth of two (2) inches is required. The cut shall then be
completed with a mechanical hammer equipped with a suitable chisel, starting from
the center of the cut.
3.1.2. All cuts shall be sawed full depth of the pavement with a concrete saw.
3.2. All cuts shall be made at pavement joints. When any portion of a panel is cut on arterial or
collector streets, the entire panel shall be removed and replaced. The minimum panel length
shall be ten (10) feet. After work is completed below grade and the trench is backfilled, 11
inches of 4000 P.S.I. Portland cement concrete should be poured in place. In cooler weather or
situations that require minimal downtime, a 1% to 2% calcium additive may be used to
promote faster setup and cure times. The surface must be leveled and finished in a manner
consistent with the surrounding surface.
4. Repair of Asphalt Streets and Alleys
4.1. If 5 or more cuts are made in a given block, or 20% of the surface area of any given block is
disturbed, the entire block shall be resurfaced. The determination of whether milling is
required prior to paving, or if the surface can be directly overlaid will be made by the
Engineering Division.
4.2. If a cut on a street overlaps the centerline of the street, the street shall be restored from curb
line to curb line.
4.3. Repairs of Residential Streets shall include “cutbacks” 1 foot wide around the entire perimeter
of the trench. The cutback shall be a minimum 9‐1/2 inches in depth measured from the
existing pavement surface. Type “B’ Bedding, compacted aggregate, or flowable fill shall be
used to backfill the trench to the level of the cut back. A minimum 8 inches of 4000 P.S.I.
Portland cement should be poured in place within 1‐1/2 inches of the surrounding surface and
allowed to harden to a degree sufficient enough to withstand traffic. The remaining 1‐1/2
inches is to be filled with surface grade asphalt and mechanically compacted or rolled with a
half‐ton or larger roller to a level consistent with the surrounding pavement.
4.4. Repairs of Arterial and Collector Streets (Thoroughfares) shall include “cutbacks” 2 feet wide
around the entire perimeter of the trench. The cutback shall be a minimum 9‐1/2 inches in
depth measured from the existing pavement surface. Flowable fill shall be used to backfill the
trench to the level of the cut back. A minimum 8 inches of 4000 P.S.I. Portland cement should
be poured in place within 1‐1/2 inches of the surrounding surface and allowed to harden to a
degree sufficient enough to withstand traffic. The remaining 1‐1/2 inches is to be filled with
surface grade asphalt and mechanically compacted or rolled with a half‐ton or larger roller to a
level consistent with the surrounding pavement.
4.5. In instances where the existing pavement depth exceeds the above minimums, the repairs
shall match the existing depth. Example: Existing pavement is 12 inches thick. Cutback area
shall match that depth and concrete thickness would be increased to 10‐1/2 inches, leaving the
1‐1/2 inch minimum for asphalt surface.
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4.6. When a diagonal excavation is made, the surface repair shall be “squared” off with cuts
parallel and perpendicular to the centerline of the street.
5. Temporary Street Surface Repairs
5.1. Backfill material shall not be left as a driving surface. Temporary street surface repairs are to
be completed with cold mix asphalt within 48 hours of making an excavation.
5.2. When possible, any required concrete shall be poured before a temporary street surface repair
is made. If the temperature is cold enough, or conditions are wet enough, to prevent the
pouring of concrete, backfill consisting of moistened #53 gravel, compacted in 6 inch lifts,
should be compacted to within 2 inches of the surface.
5.3. After concrete is poured, or backfill is compacted, bituminous cold patch shall then be tamped
into place and leveled with surrounding surface.
5.4. In high traffic areas during winter months 2 inches of concrete separated by a layer of plastic
film may be used and later be replaced with asphalt.
5.5. Temporary repairs shall be permanently repaired as soon as weather, or supply of asphalt,
permits. The permanent repair shall then be made as to conform to all specifications required
by City of Richmond.
6. Repair of Gravel Surface Driveways and Parking Areas
6.1. When trenches are excavated in driveways and parking areas that have only a gravel surface,
the contractor shall replace such surfacing on a satisfactory compacted backfill. The materials
used for backfill in a gravel surface shall be flowable fill or moistened 53’s compacted in 6 inch
lifts.
6.2. Gravel replacement shall be one (1) inch greater in depth to that which originally existed, but
not less than four (4) inches.
6.3. The surface shall conform to the original surface grade. Where the completed surface settles,
additional gravel base shall be placed and compacted by the permit holder within fourteen
(14) days after being notified by the Engineering Division to restore the surface to finished
grade.
7. Surface Repair of Recently paved streets
7.1. For the purpose of this section, recently paved streets are those paved within the last three
years.
7.2. All requirements for other asphalt surface repairs apply.
7.3. The surface repair shall be made using a roller, no hand tamping or hand operated tamping
machines will be allowed.
7.4. The surface of repair and surface of existing asphalt shall meet at exactly the same level. No
dips, mounds, or unevenness in the repair will be allowed.
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8. Repair of Brick surfaced Streets or Sidewalks
8.1. Flowable fill shall be used as backfill when repairing a brick surfaced street.
8.2. 2 to 3 inches of sand shall be used as a base directly under the brick surface. The sand shall be
moistened and compacted, then leveled to provide a base for the brick surface.
8.3. Original or other approved paving bricks shall be placed in a pattern that matches the original
surface.
8.4. The joints between the paving bricks shall be filled by brushing dry Portland cement into the
joints and wetted.
9. Repair of sidewalks, drive entrances, curbs, and curb ramps
9.1. Sidewalks, drive entrances, curbs, and curb ramps shall be removed to the nearest control or
expansion joint.
9.2. All cuts shall be saw cut through the full depth of the concrete section and be perpendicular to
the run of the walk.
9.3. Details of sidewalks, curbs, drive entrances, and curb ramps shall comply with current Indiana
Division of Transportation (INDOT) specifications. These specifications can be obtained from
the Engineering Division or INDOT.
9.4. Concrete sidewalks are to be repaired with concrete that is a minimum of four (4) inches in
thickness.
9.5. All new concrete must be protected against excessive dehydration by the application of a
membrane type curing compound (White pigment or soy bean oil concrete cure shall be used
on all new concrete within the right of way). The new concrete shall be protected from all
traffic for forty‐ eight (48) hours.
9.6. Foam expansion joint material is to be used per the standard detail drawings in Section 5.
9.7. New concrete shall be pinned to existing surfaces in all directions to eliminate settling and
heaving.
9.8. Concrete Drives
9.8.1. Concrete driveways shall be repaired with concrete to original specifications.
9.8.2. The existing driveway thickness shall be matched, but the minimum thickness shall be
six (6) inches for residential drives, eight (8) inches for commercial drives, and nine (9)
inches for industrial drives.
9.8.3. The new concrete shall be protected against excessive dehydration by the application
of a membrane type curing compound (white pigment or soybean oil concrete cure).
9.8.4. The new concrete shall be protected from all traffic for forty‐eight (48) hours. If this is
done by the use of plates, the plates shall be steel with a minimum three‐fourths (3/4)
inch thickness. These plates shall be secured so as not to move and constitute a hazard
when they are open to traffic.
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9.9. Asphalt Drives
9.9.1. Asphalt driveways shall be repaired with asphalt.
9.9.2. The existing driveway thickness shall be matched, but the minimum driveway thickness
for residential drives shall be three (3) inches of bituminous on six (6) inches of
compacted aggregate.
9.9.3. Asphalt shall be placed in three (3) inch lifts and is to be compacted by mechanical
tamp, vibrator, or roller.
9.9.4. The top one (1) inch minimum shall be surface grade hot mix asphalt.
Section 4 ‐ Inspections
All construction work within the public rights‐of‐way shall be subject to inspection by the Division of
Public Works & Engineering. It shall be the responsibility of the Permittee to provide safe access for the
inspector to perform the inspections. Inspectors may inspect any project at any time they feel it
necessary and must be allowed access to the job site.
Generally, it shall be the responsibility of the Contractor to contact the Division of Public Works and
Engineering and request an inspection for all excavations within five (5) working days of completion.
The Division of Public Works and Engineering shall inspect each excavation for which a permit has been
issued to ensure that the excavation(s) has been properly repaired, and to give notice (if applicable) to
properly repair the excavation in the event that the restoration is not completed within the allotted
time or is inadequately or improperly completed by the Permittee. On final inspection, the Division of
Public Works and Engineering shall record the completion date of the excavation, close the permit, and
shall note, if applicable, any moneys expended by the City on behalf of the Contractor in completing the
excavation.
Section 5 ‐ Specific Conditions and Considerations
In some cases, it may be necessary or beneficial for the city to alter the Specifications of Construction
for excavations. For example, in areas where there are drainage issues, it may be required that new
sidewalks and curbs be replaced at a different grade or elevation than original to help alleviate the
drainage issue. Another instance might be areas where asphalt overlays are planned and surface
grinding is not scheduled. It may be required that concrete be placed level to the existing surface. Any
Specific Conditions of Construction required by the Engineering Division will be discussed and agreed
upon with the permit holder prior to the beginning of work.
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Section 6 – Standard Detail Drawings
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Section 7 ‐ Extent of Repair Guidelines
The following are examples of unacceptable and acceptable street surface repairs with regards to
the extent of the repair. These examples are meant to give general guidance and are not all
encompassing. If at any time there is a question as to the extent a repair should go, the permittee shall
contact the Engineering Division for a final decision.
Example 1
Existing pavements should be removed to clean, straight lines parallel and perpendicular to the
flow of traffic. Do not construct patches with angled sides and irregular shapes. All repairs should be
full lane width.
Example 1: Do not construct patches with angled sides and irregular shapes.
Example 2
Avoid patches within existing patches. If this cannot be avoided, make the boundaries of the patches
coincide. All repairs should be full lane width.
Example 2: Avoid patches within existing patches.
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Example 3
Do not leave strips of pavement less than one‐half lane in width from the edge of the new patch to the
edge of an existing patch or the lip of the gutter.
Example 3: Do not leave strips of pavement less than one‐half lane width.
Example 4
In concrete pavements, sidewalks, curbs, and drive approaches, remove sections to existing joints. In
large concrete slabs, new saw cut joints may be allowed to be made mid‐slab (midway between existing
joints) if the concrete is in good repair and approval is given by the Engineering Division. In damaged
concrete, the limits of removal should be determined in the field by a representative of the Engineering
Division.
Concrete Pavement
Example 4.1: In concrete pavements, remove sections to existing joints. In large slabs, with concrete in
good repair, a saw joint mid‐slab may be allowed, but must be approved by the Engineering Division.
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Example 4.2: In concrete sidewalks and drives, remove sections to existing joints. In large drives, with
concrete in good repair, a saw joint mid‐slab may be allowed, but must be approved by the Engineering
Division.
Example 5
In the case of a series of patches or patches for service lines off a main trench, repair the pavement
over the patches by grinding and overlay when the spacing between the patches is less than 10 feet.
Example 5: The patched area must include any existing patches within 10 feet.
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Example 6
Completed street repairs should have ridability at least as good as, if not better than, the pavement
prior to the repairs. A driver may be able to see a street repair, but in the case of a quality repair,
should not be able to "feel" it in normal driving. A patch should provide a smooth ride with smooth
transitions on and off the repair and all joints should be located outside the wheel path. Overlays
should be placed by first removing the existing pavement to the desired depth by grinding or milling,
and then placing the pavement flush with the adjacent surfaces. Overlays with feathered edges are
not acceptable.
Example 6: Patches may not decrease ridability.
Example 7
The finished surface of the street repair should be tested with a ten‐ (10) foot straightedge parallel to
the centerline or perpendicular across joints. Variations measured from the testing face of the
straightedge to the surface of the street repair should not exceed one‐quarter‐ (¼) inch.
Example 7: Surface tolerances for street repairs should meet the standard for new construction.
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Example 8
Transverse patches on arterial and collector streets shall made across the entire width, curb to curb.
The area of repair shall also extend beyond the sides of the repair for a distance of two (2) feet
minimum on all sides.
Example 8: Trenches in arterial and collector streets must be patched 2 ft. beyond edge of trench.
Example 9
Patches should have a smooth longitudinal grade consistent with the existing roadway. Patches should
also have a cross slope or cross section consistent with the design of the existing roadway.
Example 9: Patch slope and grade must match existing pavement.
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Example 10
When the proposed excavation falls within 10 feet of a section of pavement damaged during the utility
repair, the failed area shall be removed to sound pavement and patched.
Scarring, gouging, or other damaged pavement adjacent to a patch shall be removed and the pavement
repaired to the satisfaction of the Engineering Division.
Example 10: Damaged pavement within 10 feet of a patch must also be patched.
Example 11
Avoid frequent changes in width of patches, all patches shall be “squared off” perpendicular to the
curbs. For future maintenance, this simplifies removal of adjacent pavement failures.
Example 11: Patches must avoid frequent width changes.