33 41 10 - 1
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
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SECTION 33 41 10
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
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PART 1 - GENERAL
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1.1
A. Section Includes:
1. Furnishing and installing reinforced concrete storm drain pipe and culverts,
including:
a. Pipe or box fittings
b. Connection of drain lines to curb inlets
c. All joints
d. All connections to new or existing pipe or headwalls, manholes, etc., to the
lines and grades shown on the Drawings
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B. Deviations from this City of Fort Worth Standard Specification
1. None.
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C. Related Specification Sections include, but are not necessarily limited to:
1. Division 0 – Bidding Requirements, Contract Forms and Conditions of the Contract
2. Division 1 – General Requirements
3. Section 33 01 31 – Closed Circuit Television (CCTV) Inspection
4. Section 03 30 00 – Cast-in-Place Concrete
5. Section 33 05 10 – Utility Trench Excavation, Embedment and Backfill
6. Section 33 05 23 – Hand Tunneling
7. Section 03 34 13 - Controlled Low Strength Material (CLSM)
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SUMMARY
1.2
PRICE AND PAYMENT PROCEDURES
A. Measurement and Payment
1. Reinforced Concrete Storm Drain Pipe
a. Measurement
1) Measured along the longitudinal centerline of the pipe from the initial
beginning point as shown on Drawings to the end of construction as shown
on Drawings, excluding inside diameters of any manholes encountered
b. Payment
1) The work performed and materials furnished in accordance with this Item
and measured as provided under “Measurement” will be paid for at the unit
price bid per linear foot of “RCP” installed for:
a) Various sizes
b) Various classes
c. The price bid shall include:
1) Furnishing and installing the specified diameter pipe and appurtenant
fittings
2) Mobilization
3) Pavement removal
4) Excavation
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 2
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
Page 2 of 12
5) Hauling
6) Disposal of excess material
7) Furnishing, placement and compaction of embedment
8) Furnishing, placement and compaction of backfill
9) Gaskets
10) Clean-up
11) Cleaning
12) Jointing
13) Connections to all drainage structures
2. Reinforced Concrete Storm Drain Culverts
a. Measurement
1) Measured along the longitudinal centerline of the pipe from the initial
beginning point as shown on Drawings to the end of construction as shown
on Drawings, excluding inside diameters of any manholes encountered
b. Payment
1) The work performed and materials furnished in accordance with this Item
and measured as provided under “Measurement” will be paid for at the unit
price bid per linear foot of “Box Culvert” installed for:
a) Various sizes
c. The price bid shall include:
1) Furnishing and installing the specified diameter pipe and appurtenant
fittings
2) Mobilization
3) Pavement removal
4) Excavation
5) Hauling
6) Disposal of excess material
7) Furnishing, placement and compaction of embedment
8) Furnishing, placement and compaction of backfill
9) Gaskets
10) Clean-up
11) Cleaning
12) Jointing
13) Connections to all drainage structures
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1.3
REFERENCES
A. Reference Standards
1. Reference standards cited in this Specification refer to the current reference
standard published at the time of the latest revision date logged at the end of this
Specification, unless a date is specifically cited.
2. American Association of State Highway and Transportation Officials (AASHTO):
a. T111, Inorganic Matter or Ash in Bituminous Materials.
3. ASTM International (ASTM):
a. A185, Standard Specification for Steel Welded Wire Reinforcement, Plain, for
Concrete.
b. A497, Standard Specification for Steel Welded Wire Reinforcement,
Deformed, for Concrete.
c. C76, Standard Specification for Reinforced Concrete Culvert, Storm Drain, and
Sewer Pipe.
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 3
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
Page 3 of 12
d. C361, Standard Specification for Reinforced Concrete Low-Head Pressure
Pipe.
e. C443, Standard Specification for Joints for Concrete Pipe and Manholes, Using
Rubber Gaskets.
f. C497, Standard Test Methods for Concrete Pipe, Manhole Sections, or Tile.
g. C506, Standard Specification for Reinforced Concrete Arch Culvert, Storm
Drain, and Sewer Pipe.
h. C507, Standard Specification for Reinforced Concrete Elliptical Culvert, Storm
Drain, and Sewer Pipe.
i. C990, Standard Specification for Joints for Concrete Pipe, Manholes, and
Precast Box Sections Using Preformed Flexible Joint Sealants.
j. C1433, Standard Specification for Precast Reinforced Concrete Monolithic Box
Sections for Culverts, Storm Drains, and Sewers.
k. D4, Standard Test Method for Bitumen Content.
l. D6, Standard Test Method for Loss on Heating of Oil and Asphaltic
Compounds.
m. D36, Standard Test Method for Softening Point of Bitumen (Ring-and-Ball
Apparatus).
n. D71, Standard Test Method for Relative Density of Solid Pitch and Asphalt
(Displacement Method).
o. D92, Standard Test Method for Flash and Fire Points by Cleveland Open Cup
Tester.
p. D113, Standard Test Method for Ductility of Bituminous Materials.
q. D217, Standard Test Methods for Cone Penetration of Lubricating Grease.
4. TxDOT Test Procedures (Tex):
a. Tex-704-I, Making, Curing, and Testing Compression Test Specimens for
Precast Concrete
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1.4
ADMINISTRATIVE REQUIREMENTS [NOT USED]
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1.5
SUBMITTALS
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A. Submittals shall be in accordance with Section 01 33 00.
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B. All submittals shall be approved by the City prior to delivery.
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1.6
ACTION SUBMITTALS/INFORMATION SUBMITTALS
A. Certificates
1. Furnish manufacturer’s certificate of compliance that their product meets the
physical testing requirements of this Specification for the materials referenced
including, but not limited to:
a. Reinforced concrete pipe
b. Concrete box culvert
c. Jointing materials
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 4
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
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1.7
CLOSEOUT SUBMITTALS [NOT USED]
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1.8
MAINTENANCE MATERIAL SUBMITTALS [NOT USED]
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1.9
QUALITY ASSURANCE [NOT USED]
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1.10 DELIVERY, STORAGE, AND HANDLING
A. Storage and Handling Requirements
1. Secure and maintain a location to store the material in accordance with Section 01
66 00.
2. Keep pipe clean and fully drained during storage.
3. Transport, handle and store pipe and fittings as recommended by manufacturer.
4. Repair or replace any damaged pipe before installation per the manufacturer’s
recommendation.
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1.11 FIELD [SITE] CONDITIONS [NOT USED]
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1.12 WARRANTY [NOT USED]
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PART 2 - PRODUCTS
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2.1
OWNER-FURNISHED [OR] OWNER-SUPPLIEDPRODUCTS [NOT USED]
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2.2
EQUIPMENT, PRODUCT TYPES AND MATERIALS
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A. Fabrication
1. Precast Reinforced Concrete Pipe
a. Provide precast storm sewer pipe that conforms to ASTM C76, ASTM C506 or
ASTM C507 for circular, arch or elliptical pipe respectively.
b. Utilize a machine made process or cast by a process that will provide uniform
placement of a mixture of cement, aggregate and water proportional to provide
a homogeneous concrete meeting the specified strength requirements.
c. Mix concrete in a central batch plant or other approved batching facility where
the quality and uniformity of the concrete is assured.
d. Do not use transit mixed concrete to manufacture precast concrete pipe.
2. Concrete Box Culvert
a. Cast-in-Place
1) Conform to Section 03 30 00.
b. Precast
1) Furnish machine made precast boxes in accordance with ASTM C1433.
2) Utilize a machine made process or cast by a process that will provide
uniform placement of a mixture of cement, aggregate, and water
proportional to provide a homogeneous concrete meeting the specified
strength requirements.
3) Concrete water to cement ratio not to exceed 0.53 by weight
4) Utilize minimum 470 pounds of cement per cubic yard of concrete unless
mix designs with lower cement content demonstrate that the quality and
performance of the sections meet the requirements of this Specification.
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
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5) Mix concrete in a central batch plant or other approved batching facility
where the quality and uniformity of the concrete is assured.
6) Do not use transit mixed concrete to manufacture precast concrete box
culvert.
7) Utilize welded wire fabric steel reinforcement conforming to ASTM A185
or ASTM A497.
3. Jointing Materials
a. Use any of the materials described in this Section for the making of joints.
1) Furnish a manufacturer’s certificate of compliance for all jointing materials.
2) Cold Applied Preformed Plastic Gaskets/Flexible Joint Sealants
a) Provide flexible joint sealants that meet the requirements of
ASTM C990.
b) Utilize 1 continuous gasket conforming to the joint shape for each joint.
c) Plastic gasket shall be produced from blends of refined hydrocarbon
resins and plasticizing compounds reinforced with inert mineral filler
and shall contain no solvents, irritating fumes or obnoxious odors.
d) Use flexible joint sealants that do not depend on oxidizing, evaporating
or chemical action for its adhesive or cohesive strength.
e) Supply in extruded rope form of suitable cross section and size as to fill
the joint space when the pipes are joined.
f) Provide a size of the pre-formed flexible joint sealant in accordance
with the manufacturer's recommendations and large enough to properly
seal the joint and obtain the squeeze out as described under
construction methods.
g) The gasket joint sealer shall be protected by a suitable removable 2piece wrapper, and the 2-piece wrapper shall be so designed that ½ may
be removed longitudinally without disturbing the other ½ to facilitate
application as noted below.
h) The chemical composition of the gasket joint sealing compound as
shipped shall meet the requirements of Table 1 when tested in
accordance with the test methods shown.
Table 1. Sealing Compound Chemical Composition
Composition
Test Method
Percent by Weight
Bitumen
ASTM D4 Bitumen Content
50-70
Ash-Inert Mineral Matter
AASHTO T111
30-50
Volatile Matter at 325 degrees F ASTM D6 Loss on Heating of
2.0 Max
Oil and Asphaltic Compounds
i)
j)
Gasket joint sealing compound when immersed for 30 days at ambient
room temperature separately in 5 percent solution of caustic potash, a
mixture of 5 percent hydrochloric acid, a 5 percent solution of sulfuric
acid and a saturated hydrogen sulfide (H2S) solution shall show no
visible deterioration.
The physical properties of the gasket joint sealing compound as
shipped shall meet the requirements in Table 2 when tested in
accordance with the test methods shown.
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CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 6
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
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Table 2. Sealing Compound Physical Properties
1
Property
Specific Gravity at 77 degrees F
Ductility at 77 degrees F
Softening Point at 77 degrees F
Penetration
32 degrees F (300-gms) 60-seconds
77 degrees F (150-gms) 5-seconds
115 degrees F (150-gms) 5-seconds
Flash Point C.O.C.
Fire Point C.O.C
ASTM D92
75 minimum
50 to 120
150 max
600 degrees F
625 degrees F
B. Design Criteria
1. Reinforced Concrete Pipe
a. Unless otherwise indicated on the Drawings, furnish Class III concrete pipe
with shell thickness, circumferential reinforcement and strength conforming to
the requirements of ASTM C76, ASTM C506 or ASTM C507 for circular, arch
or elliptical pipe respectively, except as modified below:
1) Manufacture pipes larger than 60-inch diameter by using 2 lines of circular
reinforcement.
2) For Class III pipes larger than 60-inch diameter, manufacturer may, at its
option, furnish pipe manufactured with either Wall "B" or Wall "C"
minimum thicknesses and the applicable minimum steel area as listed for
circular cages in Table II of ASTM C76, provided test strength
requirements for Class III pipe are satisfactorily met.
b. Jacking, Boring, or Tunneling
1) Design pipe for jacking, boring or tunneling conforming to the
requirements of Section 33 05 23.
2) When requested, provide design notes and drawings signed and sealed by a
Texas licensed professional engineer.
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ACCESSORIES [NOT USED]
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2.4
SOURCE QUALITY CONTROL
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ASTM D217
Typical Analysis
1.20 to 1.35
5.0 centimeters minimum
320 degrees F minimum
3) Rubber Gaskets
a) Provide gaskets that conform to ASTM C361 or ASTM C443.
b) Meet the requirements of ASTM C443 for design of the joints and
permissible variations in dimensions.
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Test Method
ASTM D71
ASTM D113
ASTM D36
A. Tests and Inspections
1. Reinforced Concrete Pipe
a. Acceptance of pipe will be determined by the results of the following tests:
1) Material tests required in ASTM C76, ASTM C506 or ASTM C507.
2) Absorption tests in accordance with ASTM C497.
3) 3-edge bearing tests in accordance with ASTM C497.
a) Testing Rate
(1) If tested for 0.01-inch crack only:
(a) Test 0.8 percent of pipe sections for each size included in order
(2) If tested for 0.01-inch crack and ultimate load:
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 7
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
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(a) Test 0.2 percent of pipe sections for each size included in order
b) Pipes that have been tested only to the formation of a 0.01 inch crack
and that meet the 0.01 inch test load requirements shall be accepted for
use.
c) Failed Pipe
(1) Test 2 consecutive joints in the same mix series if a specimen fails
to meet test requirements.
(2) Entire pipe series will be rejected if 1 of the consecutive joints fails
to meet test requirements.
d) Pipes larger than 1 inch in diameter may be accepted on the basis of
material tests and inspection of completed product as an alternate to 3edge bearing test, at the option of the manufacturer.
(1) Acceptance of pipe will be determined by the results of the material
tests as required in ASTM C76, ASTM C506 or ASTM C507.
(a) Perform crushing tests on cores taken from barrel of completed
and cured pipe.
(b) Perform absorption tests on samples from pipe wall.
(c) Inspect finished pipe including amount and placement of
reinforcement.
(2) Manufacturer will furnish facilities and personnel for taking core
samples from pipe barrel and for determining compressive strength
of samples.
(3) Manufacturer will plug and seal core holes if samples meet strength
requirements.
(a) Plug and seal sections in a manner that the pipe section will
meet all test requirements of ASTM C76, ASTM C506 or
ASTM C507.
(b) Pipe sections plugged and sealed as described above will be
accepted for use.
4) Inspect the finished pipe to determine its conformance with the required
design.
2. Cast-in-Place Concrete Box Culvert
a. Provide test specimens that meet the requirements of Division 03.
3. Precast Box Culvert
a. Make test specimens in test cylinders at the same time and in the same manner
as the box sections they represent.
b. Make a minimum of 4 test cylinders for each day’s production run and each
mix design.
c. Cure test cylinders in the same manner and for the same times as the boxes they
represent.
d. Test the specimens in accordance with Tex-704-I.
B. Sizes and Permissible Variations
1. Reinforced Concrete Pipe
a. Ensure that variations in diameter, size, shape, wall thickness, reinforcement,
placement of reinforcement, laying length and the permissible under run of
length are in accordance with the applicable ASTM Specification for each type
of pipe as referred to previously.
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 8
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b. Where rubber gasket pipe joints are to be used, the design of joints and
permissible variations in dimensions shall be in accordance with ASTM C443,
Sections 7 and 8.
2. Cast-in-Place or Precast Box Culvert
a. Ensure that precast sections of either type meet the following requirements:
1) The inside vertical and horizontal dimensions do not vary from Drawing
requirements by more than 1/2 inch or 1 percent, whichever is greater.
2) The horizontal or vertical plane at each end of the box section does not vary
from perpendicular by more than 1/2 inch or 1 percent, whichever is
greater, measured on the inside faces of the section.
3) The sides of a section at each end do not vary from being perpendicular to
the top and bottom by more than 1/2 inch or 1 percent, whichever is greater,
when measured diagonally between opposite interior corners.
b. Ensure that wall and slab thicknesses are not less than shown on the Drawings
except for occasional deficiencies not greater than 1/4 inch or 5 percent,
whichever is greater.
1) If proper jointing is not affected, thicknesses in excess of Drawing
requirements are acceptable.
c. Deviations from the above tolerances will be acceptable if the sections can be
fitted at the plant or job site and the joint opening at any point does not exceed
1 inch.
1) Use match marks for proper installation on sections that have been accepted
in this manner.
C. Workmanship and Finish
1. Reinforced Concrete Pipe
a. Ensure that pipe is substantially free from fractures, large or deep cracks and
surface roughness.
b. Ensure that ends of pipe are normal to the walls and centerline of the pipe
within the limits of variations allowed as stated previously.
2. Cast-in-Place or Precast Box Culvert
a. Fine cracks on the surface of the member that do not extend to the plane of the
nearest reinforcement are acceptable unless the cracks are numerous and
extensive.
b. Repair cracks that extend into the plane of the reinforcing steel in an approved
manner.
c. Excessive damage, honeycomb or cracking will be subject to structural review.
d. The City may accept boxes with repairs that are sound, properly finished and
cured in conformance with pertinent Specifications.
e. When fine cracks on the surface indicate poor curing practices, discontinue
further production of precast sections until corrections are made and proper
curing is provided.
D. Curing
1. Cure pipe/box in accordance with the applicable ASTM Specification for each type
of pipe as referred to above.
E. Marking
1. Reinforced Concrete Pipe
a. Clearly mark the following information on each section of pipe:
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 9
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
Page 9 of 12
1) Class of pipe
2) ASTM designation
3) Date of manufacture
4) Identification of plant
5) Name or trademark of the manufacturer
6) Pipe to be used for jacking and boring
b. For pipe with elliptical reinforcement, in addition to above, clearly mark 1 end
of each section during the process of manufacture or immediately after with the
following:
1) The location of the top or bottom of the pipe as it should be installed,
unless the external shape of the pipe is such that the correct position of the
top and bottom is obvious
2) Mark the pipe section by indenting or painting with waterproof paint.
2. Cast-in-Place or Precast Box Culvert
a. Mark precast boxes with the following:
1) Name or trademark of the producer
2) Date of manufacture
3) Box size
4) Minimum and maximum fill heights
b. For boxes without lifting holes, mark 1 end of each box section on the inside
and outside walls to indicate the top or bottom as it will be installed.
c. Indent markings into the box section or paint them on each box with waterproof
paint.
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F. Pipe/Box Rejection
1. Individual sections of pipe/box may be rejected if any of the Specification
requirements are not met or if any of the following exist:
a. Fractures or cracks passing through the shell, with the exception of a single end
crack that does not exceed the depth of the joint
b. Defects that indicate imperfect proportioning, mixing and molding
c. Surface defects indicating honeycombed or open texture
d. Damaged ends which would prevent making a satisfactory joint
e. Any continuous crack having a surface width of 0.01 inch or more and
extending for a length of 12 inch or more
2. Mark rejected pipe/box with painted “REJECTED”.
3. Remove rejected pipe/box immediately from job site and replace with pipe/box
meeting the requirements of this Specification.
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PART 3 - EXECUTION
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3.1
INSTALLERS [NOT USED]
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EXAMINATION [NOT USED]
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3.3
PREPARATION [NOT USED]
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3.4
INSTALLATION
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A. General
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 10
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
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1. Conform to the requirements of Section 33 05 10 for excavation and embedment for
open-cut type installation.
2. Conform to the requirements of Section 33 05 23 when jacking, boring or tunneling
methods are specified on Drawings.
3. Establish and maintain lines and grades.
B. Pipe/Box Laying – Trench Installation
1. Ensure that pipe/box and fittings are laid and jointed in firm trench bottom
conditions.
2. Start laying pipe/box on the bedding at the outlet or downstream end with the spigot
or tongue end of the pipe joint pointing downstream, and proceed toward the inlet
or upstream end with the abutting sections properly matched, true to the established
lines and grades.
3. Provide appropriate facilities for hoisting and lowering the sections of pipe/box
according to manufacturer’s recommendation.
4. Lift and lower sections of pipe/box into trench without damaging pipe or disturbing
the prepared bedding or sides of trench.
5. Carefully clean pipe/box ends before pipe is placed in trench.
6. Protect pipe/box open end to prevent entrance of earth or bedding material as each
length of pipe/box is laid.
7. Fit, match and lay pipe/box to form a smooth, uniform conduit.
8. When elliptical pipe with circular reinforcing or circular pipe with elliptical
reinforcing is used, lay the pipe in trench so that the markings for top or bottom are
not more than 5 degrees from the vertical plane through the longitudinal axis of the
pipe
9. Remove and re-lay, without extra compensation, pipe/box that is not in alignment
or that shows excessive settlement after laying.
C. Multiple Barrel Box Culvert Placement
1. Fill the annular space between multiple boxes with crushed rock or CLSM
according to 03 34 13.
a. Water jetting will not be allowed between parallel boxes.
2. Start the laying of boxes on the bedding at the outlet end and proceed toward the
inlet end with the abutting sections properly matched.
3. Fit, match and lay boxes to form a smooth, uniform conduit true to the established
lines and grades.
D. Jointing
1. Cold Applied Preformed Plastic Gaskets/Flexible Joint Sealants
a. Brush-apply a suitable primer, recommended by the manufacturer of the gasket
joint sealer, to tongue and groove joint surfaces and end surfaces.
1) Ensure that surface to be primed is clean and dry when primer is applied.
2) Ensure that primer is not applied over mud, sand, dirt or sharp cement
protrusions.
3) Allow primer to dry and harden.
b. Attach plastic gasket sealer around tapered tongue or tapered groove near the
pipe joint hub or shoulder, before laying pipe in trench.
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 11
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c. Remove paper wrapper from 1 side only of the 2-piece wrapper on gasket and
press it firmly to the clean, dry pipe joint surface.
1) Do not remove the outside wrapper until immediately before pushing pipe
into its final position.
d. Align the tongue correctly with the flare of the groove.
e. Remove outside wrapper on the gasket and pull or push pipe home with
sufficient force (back hoe shovel, chain hoist, ratchet hoist or winch) to cause
evidence of gasket material squeeze-out on inside or outside around complete
pipe joint circumference.
1) Remove any joint material that pushed out into the interior of pipe.
2) Ensure that pipe is pulled home in a straight line with all parts of pipe on
line and grade at all times.
f. Proceed with backfilling of pipe laid with plastic gasket joints as soon as joint
has been inspected and approved by the Engineer or Inspector.
1) Take special precautions in placing and compacting backfill to avoid
damage to joints.
g. When the atmospheric temperature is below 60 degrees F, store pre-formed
flexible joint sealants in an area warmed to above 70° degrees F or artificially
warmed to this temperature in a manner satisfactory to the Engineer.
1) Apply gaskets to pipe joints immediately prior to placing pipe in trench,
followed by connection to previously laid pipe.
2. Rubber Gaskets
a. Make the joint assembly according to the recommendations of the gasket
manufacturer.
b. When using rubber gaskets, make joints watertight.
c. Backfill after the joint has been inspected and approved.
E. Backfill
1. Conform to the requirements of Section 33 05 10 for backfilling pipe/box trenches.
F. Pipe fittings
1. Poured Concrete Pipe Collars
a. Provide collars for locations shown on Drawings.
b. Collar cost is considered subsidiary to bid price for furnishing and installing
reinforced concrete pipe. No extra payment will be made for installation of
concrete pipe collars shown on the Drawings.
2. Shop and Field-Fabricated Wyes, Tees, Crosses and Bends
a. Furnish and install shop or field-fabricated wyes, tees, crosses or bends as
indicated on Drawings or required by the Engineer.
b. Shop-fabricate fittings for maximum pipe size less than 24-inches in diameter
for the larger pipe.
c. Field-fabricate fittings with 24-inch or greater diameter for the larger pipe.
d. Field-fabricate fittings for box culverts.
e. Take care in fabrication that concrete walls of pipe are broken back only
enough to provide the required finished opening.
f. Join reinforcing mesh or bars by bending, twisting or spot welding to provide a
rigid connection.
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]
33 41 10 - 12
REINFORCED CONCRETE STORM DRAIN PIPE/CULVERTS
Page 12 of 12
g. Concrete or mortar (as specified in this segment) shall be wiped over the
reinforcing wires connecting the 2 pipe joints, compacted by light blows,
shaped to the contour of the pipe barrels, lightly brushed for finish and cured
under wet burlap.
3. Poured Concrete Pipe Plugs
a. Plug pipe ends with a fabricated unit as shown on Drawings, when conduit lines
terminate at locations with no connection to drainage structures.
b. Concrete pipe plug cost is considered subsidiary to bid price for furnishing and
installing reinforced concrete pipe. No extra payment will be made for
installation of concrete pipe plugs shown on the Drawings.
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3.5
REPAIR / RESTORATION [NOT USED]
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3.6
RE-INSTALLATION [NOT USED]
13
3.7
FIELD [OR] SITE QUALITY CONTROL
A. Field Tests and Inspections
1. Video Inspection
a. Perform post-construction TV inspection of all installed reinforced concrete
pipes/boxes conforming to the requirements of Section 33 01 31.
2. Ensure that pipes/boxes are installed correctly and are free of significant debris.
a. At the City’s discretion, replace any pipe/box that is determined to have
jointing problems, cracking or significant debris.
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3.8
SYSTEM STARTUP [NOT USED]
22
3.9
ADJUSTING [NOT USED]
23
3.10 CLEANING [NOT USED]
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3.11 CLOSEOUT ACTIVITIES [NOT USED]
25
3.12 PROTECTION [NOT USED]
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3.13 MAINTENANCE [NOT USED]
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3.14 ATTACHMENTS [NOT USED]
END OF SECTION
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Revision Log
DATE
NAME
SUMMARY OF CHANGE
30
CITY OF FORT WORTH
STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS
Revised July 1, 2011
[Insert Project Name]
[Insert Project Number]