[Ord. 146, 2/18/1992, § 500]
1. 
Presence of an authorized Township representative or inspector does not relieve the developer/contractor from material defects, improper installation or inferior work as may be discovered during testing/video inspection or maintenance period.
2. 
Materials.
A. 
PVC Pipe and Fittings — ASTM-D 3034.
(1) 
Pipe and fittings up to and including fifteen-inch shall be Type PSM-35 (ASTM D 3034).
(2) 
Pipe and fittings larger than 15 inches (ASTM F 679). Minimum wall thickness shall be per T-1 of Table 1 within ASTM F 679.
B. 
Ductile Iron Pipe and Fittings.
(1) 
All ductile iron gravity sanitary sewer pipe shall be Class 50 unless otherwise noted. All piping shall be gasketed push-on type and/or mechanical joints. In special conditions approved by the Township, flange pipe and fittings may be utilized.
(2) 
All pipe and fittings shall be bituminous coated cement mortar lines (double thickness per ANSI A 21.4/AWWA C-104). All pipe and fittings for underground burial shall be seal-coated on the outside.
(3) 
Ductile iron pipe and fittings shall conform to the following standards:
(a) 
ANSI A21.51/AWWA C151, Ductile Iron Pipe.
(b) 
ANSI A21.11/AWWA C111, Gasket Type Joints.
(c) 
ANSI A21.10/AWWA C110, Grey Iron and Ductile Iron Mechanical Joint Fittings.
(d) 
ANSI A21.53/AWWA C153, Ductile Iron Push-On Joint Fittings.
(4) 
Flanged ductile iron pipe shall be thickness Class 53 and shall fully conform to the requirements of ANSI A21.51/AWWA C115. Flanges shall be flat-faced (raised-face flanges shall not be permitted) ANSI B16.1, Class 125 and shall also conform to ANSI A21.15/AWWA C115.
(5) 
Flanged joints shall be flat-faced (raised-face flanges shall not be used), gasketed and bolted, conforming to ANSI A21.10/AWWA C110 standards. Gaskets shall be full-faced (ring gaskets shall not be used), rubber, 1/8 inch thick, conforming to ASTM 425 and ANSI A21.10 standards.
(6) 
All nuts and bolts for flanged joints shall be low alloy steel conforming to the requirements of ANSI B16.1. All nuts and bolts in buried or corrosive applications shall receive a heavy coating of bituminous material.
(7) 
Cast iron or ductile iron fittings, mechanical joint or flanged, shall be in accordance with ANSI 21.10/AWWA C-110. Flanges are to be Class 125 drilling, full face.
C. 
Concrete (ACI 318-71).
(1) 
Slump ASTM C 143.
(2) 
Cement ASTM C 150.
(3) 
Air-entrained cement ASTM C 175.
(4) 
Fine and course aggregate ASTM C 33.
(5) 
Sand ASTM C 144.
(6) 
Test cylinders ASTM C 192.
(7) 
Ready mix concrete ASTM C-94.
(8) 
Welded wire fabric ASTM A 185.
(9) 
Metal reinforcement (Rebar; Grade 60) ASTM A 615.
(10) 
Cold-weather concrete ACI 306-66.
(11) 
Hot-weather concrete ACE 305-72.
D. 
Manholes and Grade Rings ASTM C 478. All manholes shall be manufactured by Atlantic Concrete Products, Inc., Tullytown, PA; Monarch Precast Concrete Company, Allentown, PA; or equal manufacture in accordance with ASTM C 478 (latest revision).
E. 
Castings ASTM A 48 C1.30.
F. 
Use of adapters, fittings, sleeves or connections not specified by these specifications shall only be permitted when approved by the Township. Use of FERNCO adapters and sleeves (or equivalent) are permissible as noted within these specifications.
3. 
Prior to any earthen disturbance, wetland boundaries as determined by a certified professional soil scientist shall be field delineated by a registered surveyor. Protective safety fence shall be placed along the wetland perimeter to prevent encroachment of equipment or construction activity.
4. 
The contractor/developer shall be responsible for implementation of all erosion and sedimentation control requirements as specified within § 18-304 prior to the start of any earthen disturbance or construction activity.
[Ord. 146, 2/18/1992, § 501; as amended by Ord. 167, 12/17/1996]
1. 
All pipe shall be unloaded, handled and stored in conformance with manufacturer's recommendations.
2. 
Pipes shall be laid true to grades shown on drawings. Each section of pipe shall rest upon the pipe bed for the full length of its barrel, with recesses excavated to accommodate bells and joints. Any pipe which has its grade or joints disturbed after laying shall be taken up and relaid. Pipe sections shall be inspected, and the interior and ends of all pipe shall be cleaned before lowering into the trench. During construction, the contractor shall use all precautions to keep the pipe clean and clear of debris and free from damage. The mouth of the completed sewer pipe shall be properly closed at all times, with an expanding rubber plug or other approved device, except when pipelaying is in progress. Pipe shall be laid in trenches in an upgrade direction (direction of increasing elevation.) Pipe shall be set so that the bell end is located on the upgrade side of the trench.
3. 
When necessary to cut pipe to size, it shall be done by saw-cutting, neatly and cleanly. PVC pipe shall be provided with a proper bevel.
4. 
Regardless of its material, all pipe, including laterals, shall be laid on a minimum six-inch thickness of PennDOT 2B (AASHTO 57) stone and provided with a one-foot minimum cover of same.
5. 
Laterals.
A. 
Connections to the sewer shall be by means of 45° wye fittings at the locations indicated on the approved plans. The lateral pipe stub shall be capped with a watertight pressure-type fitting capable of withstanding the exfiltration tests and to remain until future connection to the house sewer. All laterals shall be extended at a minimum three feet beyond the right-of-way line. The ends of all laterals shall be physically marked to show the location and depth of the pipe end. The method of marking shall be by installation of a 45° wye branch and six-inch SDR-35 PVC riser pipe. The wye branch and riser shall be placed at the right-of-way line. The riser shall be properly capped with a watertight fitting capable of withstanding infiltration and exfiltration.
B. 
Laterals shall be of the same type of material as the sewer line to which the lateral connects, unless otherwise specified by the Township or these specifications.
C. 
Laying lengths shall be as follows:
(1) 
Ten feet for six-inch PVC pipe.
(2) 
Thirteen feet for eight-inch PVC pipe.
D. 
Laterals shall not be installed directly into manholes unless approved by the Township. If a lateral is installed after main sewer is in place, a minimum 35± inches section of main shall be removed and replaced with a 45° wye branch and pipe sections connected to the main by use of approved sleeves. The entire replacement shall be cradled with concrete to prevent sleeves from shifting.
6. 
Concrete Encasement. Refer to § 18-314 for concrete encasement specifications.
7. 
Connection between pipes of separate materials (PVC to DIP; DIP to PVC) shall be accomplished using Fernco flexible couplings (or equivalent). Coupling shall be encased in concrete.
8. 
Pipe joints and gaskets shall be adequately lubricated with a non-petroleum-based lubricant manufactured for such purpose. Use of petroleum-based lubricants is strictly prohibited.
[Ord. 146, 2/18/1992, § 502; as amended by Ord. 167, 12/17/1996]
1. 
Precast.
A. 
Bases for manholes shall be precast. The minimum thickness shall be eight inches. Inlet and outlet pipes shall be flush with the inside of precast manholes. All manholes shall be set on a minimum six inches bedding of PennDOT 2B (AASHTO 57) stone.
B. 
All precast sections of manholes shall be lifted and moved by use of suitable lifting slings and lugs to prevent damage to the precast joint edge. If minor damage occurs to precast sections, such damage shall be repaired in the presence and to the satisfaction of the Township.
C. 
Ends of manhole section shall be ship-lap type. Joints between sections shall be made watertight by inserting two flexible preformed plastic sealing compound (one on each face) similar and equal to "RAM NEK" as manufactured by K.T. Snyder, Inc., or "MAS STIK" as manufactured by A-Lok. Rubber O-rings shall not be acceptable. Placement of gaskets shall conform with manufacturer's recommendations. The exterior of each joint below grade shall be coated with a bitumastic plastic cement. The material shall not crack at cold temperatures (above 10° F.) and shall not sag at high temperatures (up to 140° F.).
D. 
The exterior of all manholes is to have two coats (eight mil dry thickness) of Koppers Super Service Black, coal tar epoxy, Koppers 300-M, Pennoxy Tar 32-3-4 or equal applied as recommended by the manufacturer. Coating must be factory-applied with surface scratches repaired in the field as necessary. Field application is to be per the manufacturer's specifications. The interior of all joints shall require trimming and tooling of the flexible plastic gasket to provide a flush joint at manhole sections after settlement has occurred.
E. 
Leveling manhole sections by use of wedging or placing shims will not be permitted. Manholes shall not be backfilled until authorized by the Township.
F. 
Manholes shall be constructed as promptly as practical to coincide with adjacent sewer pipe construction. If construction of manholes is delayed, the inspector shall have the right to stop trenching and pipelaying until manholes are constructed to complete sections of sewer.
G. 
Manhole steps shall be installed at twelve-inch intervals and shall be aluminum 6060-T6 alloy, drop-front, safe-tread as manufactured by Alcoa (No. 16829) or equal. Vertical alignment shall be plumb. No step(s) shall be offset horizontally from other steps.
H. 
Piping Connections to New Precast Manholes.
(1) 
Connections between sewer pipe and new precast manholes shall be made by means of a rubber-gasket-type piping seal similar and equal to "A-LOK Manhole Pipe Seal" as manufactured by A-LOK Products, Trenton, NJ, or approved equal. Compression-type pipe seals, such as rubber boots fastened to pipe using stainless steel bands, shall not be acceptable.
(2) 
The rubber-gasket-type seals must be manufactured so as to be properly mated to the type and size of the sewer pipe being used.
(3) 
Annular space around the gasket outside of the manhole wall shall not be filled. The bottom half of the annular space in the inside of the manhole wall shall be filled with nonshrink hydraulic cement. The top half of the annular space around the gasket in the inside of the manhole wall shall not be filled. The opening for lift holes within precast concrete manhole bases, walls and sections shall be filled with nonshrink waterproof grout.
I. 
Pipe Connections to Existing Manholes.
(1) 
Connection to preexisting manholes shall be accomplished utilizing Kor-N-Seal I flexible pipe to manhole connector (or approved equal). The connector shall be installed in conformance to manufacturer's recommendations.
(2) 
Installation of the connector must be accomplished by coring a hole through the manhole wall. Punching a hole through manhole walls by sledgehammer or hydraulic hammer is not permitted.
J. 
Grade Rings.
(1) 
The tops of all manholes shall be brought to design grade for receiving manhole frames by precast monolithic grade rings. Use of brick is prohibited.
(2) 
Grade rings shall not be less than two inches thick.
(3) 
A maximum 12 inches of grade rings may be applied from the top manhole section to the bottom of the cast iron frame. If this height exceeds 12 inches, a one-foot manhole riser section shall be added to the manhole.
(4) 
A double ring of preformed plastic sealing compound approved for use between manhole sections shall be placed between all grade rings. Use of mortar is only permitted between the top grade ring and casting in order to slope casting as necessary to match the roadway profile and/or crown.
(5) 
A one-half-inch-thick coat of standard mortar shall be neatly placed around the outside of the grade rings.
(6) 
Grade rings shall be monolithic.
2. 
Cast-In-Place.
A. 
Cast-in-place manholes are only permitted where a connection from a new sanitary main is made to an existing main.
B. 
The method of cast-in-place base construction shall be to set the bottom manhole riser section over existing pipe on concrete blocks and pour a concrete base.
(1) 
Concrete shall be Class AA. Slump shall range from three to four inches.
(2) 
Concrete benches are to be formed during this operation.
(3) 
Concrete is to extend a minimum of eight inches above bottom of the last section (inside and outside of section wall) at the periphery.
(4) 
A water stop shall be provided on pipes through the base section by tightly wrapping a length of solid rubber rope a minimum 1/2 inch in diameter at least twice around the pipe and securely typing off prior to placing concrete. This water stop shall be centered in the wall of the base directly below the wall of the first section.
(5) 
No. 4 (60 grade) rebar mat shall be provided within the poured base. Rebar shall be spaced at six-inch intervals in both directions and extend at least one foot beyond the outer surface of the first section. Depth of the poured base shall extend eight inches beneath the bottom surface of the existing main. Rebar mat shall be set on brick so that it will be centered within the eight-inch base beneath the existing main. A minimum four inches of PennDOT 2B (AASHTO 57) stone shall be provided beneath the poured base.
(6) 
Concrete shall be extended as a cradle beneath existing main for a minimum of three feet beyond the manhole wall. Cradle shall be a minimum six inches in depth beneath the bottom of the existing main and shall be provided with four (Grade 60) No. 4 bars.
(7) 
Vibrators shall be used to consolidate concrete around the rebar mat and around the periphery of the first section.
(8) 
Concrete shall be allowed to cure for 24 hours before installing remaining sections.
3. 
Drop Manholes.
A. 
All drop manholes of new construction shall have base of drop monolithically poured with the manhole base. Refer to applicable manhole detail.
B. 
Field-poured drop manholes may only be constructed for connection of a drop to an existing manhole. Refer to applicable manhole detail.
4. 
Manhole Rungs, Frames and Covers.
A. 
Manhole rungs, frames and covers shall be made accurately to the pattern and dimensions specified.
B. 
Frames shall be set to the correct elevation (slopes as may be required to meet slope of roadway crown and profile when in the cartway or stabilized shoulder) on two concentric rows of flexible plastic gasket. Flange shall have fifteen-sixteenths-inch-diameter concentrically drilled holes for four three-fourths-inch-diameter galvanized steel anchor bolts on a thirty-two-and-one-half-inch bolt circle. Bolts shall be sufficiently long to be securely anchored in a steel channel cast horizontally into the manhole cone section.
C. 
All manhole frames and covers shall be Neenah Model No. R-1658 with self-sealing O-ring gasket, concealed pick hole and Type C drop handle. Watertight manholes shall be self-sealing, gasketed and bolted with four three-inch-long stainless steel bolts.
5. 
Concrete Easements.
A. 
Protection of Wells.
(1) 
Any sewer pipe over six inches in diameter installed within 50 feet of water supply wells shall be encased with a minimum of six inches of concrete all around the pipe.
(2) 
Concrete is to have a minimum compressive strength of 2,000 psi at 28 days; additives may be used to accelerate set. No stone bedding is required under pipe encased in concrete for this specific situation.
B. 
Utility and Stream Crossings. Refer to design requirements of §§ 18-313 and 18-314.
6. 
Terminal manholes and pipe depths shall be designed to accommodate future sanitary sewer extensions. Additionally, terminal manholes shall be located accordingly within the limits of site boundary to accommodate the future extension.
[Ord. 146, 2/18/1992, § 503; as added by Ord. 167, 12/17/1996]
1. 
Internal and/or external manhole chimney seals shall be installed within new or existing manholes at the direction of the Township. Materials shall be as manufactured by Cretex (or equivalent).
2. 
Sizing and ordering of chimney seals shall be in accordance with manufacturer procedures.
3. 
Internal Rubber Seals. Internal rubber seals shall consist of the following components:
A. 
The flexible rubber sleeve, extensions and wedge strips shall be extruded from a high-grade rubber compound conforming to the applicable requirements of ASTM C-923 with a hardness (durometer) of 45±5.
B. 
The sleeve shall be double-pleated with a minimum unexpanded vertical height of eight inches and a minimum thickness of 3/16 inch and shall be capable of a vertical expansion when installed of not less than two inches. The top and bottom section of the sleeve shall contain an integrally formed expansion band recess and multiple sealing fins.
C. 
The extension shall have a minimum thickness of 3/16 inch. The top section of the extension shall be shaped to fit into the bottom band recess of the sleeve under the bottom chimney seal band. The bottom section of the extension shall contain an integrally formed expansion band recess and multiple sealing fins matching that of the rubber sleeve.
D. 
Any splice used to fabricate the sleeve and extension shall be hot vulcanized and have a strength such that the sleeve can withstand a 180° bend with no visible separation.
E. 
The continuous wedge strip used to adapt the rubber sleeve to sloping surfaces shall have the slope differential necessary to provide a vertical band recess surface, be shaped to fit into the band recess and have an integral band restraint. The length of the wedge strip shall be such that, when its ends are butted together, it will cover the entire inside circumference of that band recess needing slope adjustment.
F. 
The expansion bands used to compress the sleeve against the manhole shall be 16-gauge stainless steel conforming to ASTM A-240, Type 304, with a minimum width of 1 3/4 inches.
G. 
The expansion mechanism shall have the capacity to develop the pressures necessary to make a watertight seal and shall have a minimum adjustment range of two diameter inches. Studs and nuts used for this mechanism shall be stainless steel conforming to ASTM F-593 and 594, Type 304.
H. 
Manhole cover must be removed to allow any accumulated fumes to dissipate. Open additional manholes or use a blower to ventilate if necessary.
I. 
The contractor shall field measure the inside diameter of the manhole frame base and the manhole chimney cone; then determine whether the inside surface of the frame is straight (vertical) or tapered (and the amount of taper). This information is necessary to obtain the proper size of bands, the size and shape of seal and the need for and slope of a wedge insert.
J. 
The surfaces against which the sleeve is to be compressed shall be circular, clean, reasonably smooth, and free of any loose material and excessive voids. If the masonry surface is rough or irregular, which would not provide an effective seal, it shall be smoothed with an approved low-shrink mortar. A bead of butyl rubber caulk, conforming to ASSHTO M-198 Type B, may be applied to the lower sealing surface of the sleeve to fill any minor irregularities in the masonry surface. Any flaws in the manhole frame, such as cracks, pits or protrusions, shall be repaired by either filling with mortar or grinding smooth.
K. 
The lower three inches of the manhole frame shall be cleaned with a wire brush to remove any loose rust or scale. Any imperfections must be repaired by either grinding smooth or filling with mortar. A reasonably smooth, clean sealing surface is required.
L. 
All loose and protruding mortar and brick from the upper seven inches of chimney shall be removed, and the surface shall be cleaned by wire brushing. A four-inch-wide sealing surface starting two inches down from the bottom of the frame shall be provided. This surface must be circular, reasonably smooth, clean and free of any loose material or excessive voids. If the masonry surface is rough and irregular, a hard mortar sealing surface must be formed using a low-shrink mortar.
M. 
Casting shall be realigned if it is offset more than approximately three inches from the chimney.
N. 
A visible line or series of alignment marks must be place around the frame 2 3/4 inches up from the bottom edge of the frame for normal positioning. The sleeve can be installed higher in the frame if necessary, in which case marks should be raised accordingly.
O. 
Rubber sleeve must be installed with the printing at the top, and line the top edge up with the previously applied marks.
P. 
Outside of one stainless steel band must be lightly lubricated with gasket lube and then installed in the upper band recess to that the slotted end laps over the end with the studs and the studs extend through the adjustment slot. Self-locking nuts must be placed and tightened sufficiently to draw the lapped ends of the band close enough to allow the attachment of the expansion tool. The expansion tool must be positioned to expand the band as required to provide a watertight seal. The two lock nuts must be tightened while the band is in an expanded position.
Q. 
If an extension is utilized, refer to the internal or external chimney seal extension specifications of Subsections 4 and 6 of this section.
R. 
The bottom section of the sleeve shall be folded up with a continuous bead of butyl rubber chalk applied to the center portion of the sealing fins around the entire circumference of the sleeve and returned to its normal position.
S. 
The second band must be lubricated and installed in the loser recess. The second band must be expanded keeping the bands parallel and approximately three inches apart. The bands can be put closer together if excessive sleeve expansion is desired.
T. 
The top and bottom edges of the sleeve must be checked to ensure that it has been properly sealed against the two surfaces.
U. 
The stainless steel expansion bands shall be installed in the top and bottom band recesses after the rubber sleeve has been placed in the proper position and individually tightened as required to provide a watertight seal.
V. 
A wedge insert shall be used (as needed) to adapt the rubber sleeve to a sloping surface. It shall be placed in the appropriate band recess prior to installing the expansion band. The expansion band shall then be installed in the wedge insert/band recess and expanded as required to provide a watertight seal.
4. 
Internal Extensions. When utilizing internal extensions, the following specifications are to be used in place of Subsection 3P, Q and R:
A. 
Once the chimney seal is secured to the manhole frame by use of the first band, the internal extension must be positioned such that the top of the extension fits snugly into the lower band recess of the chimney seal.
B. 
The second band shall be lightly lubricated and installed into the top band recess of the extension. Bands must be kept parallel as the second band is expanded. Lock nuts must be tightened.
C. 
The bottom section of the extension must be folded up to apply a continuous bead of butyl caulk to the center portion of the sealing fins around the entire circumference of the extension sleeve, then returned to its normal position.
D. 
The third band must be lubricated and installed in the lower band recess of the extension. Bands must be kept parallel when using the expansion tool. Lock nuts must be tightened to complete installation.
5. 
External Rubber Seals. External rubber seals shall consist of the following components:
A. 
The flexible rubber sleeve and extension shall be extruded from a high-grade rubber compound conforming to the applicable requirements of ASTM C-923 with a hardness (durometer) of 45±5.
B. 
The sleeve shall be corrugated, with a minimum thickness of 3/16 inch, and shall be available in unexpanded vertical heights of six and nine inches, each capable of a vertical expansion of not less than two inches when installed. The top section of the sleeve shall contain multiple sealing fins and be designed to extend both over and under the manhole base flange, thereby allowing it to be mechanically locked in place. The bottom section of the sleeve shall contain an integrally formed compression band recess and multiple sealing fins.
C. 
The extension shall have a minimum thickness of 3/16 inch. The top portion of the extension shall be shaped to fit into the bottom band recess of the sleeve and have its own integrally formed band recess which is located such that, when assembled, the recess is centered over that of the sleeve. The bottom section of the extension shall contain an integrally formed compression band recess and multiple sealing fins.
D. 
Any splice used to fabricate the sleeve and extension shall be hot vulcanized and have a strength such that the sleeve shall withstand a 180° bend with no visible separation.
E. 
The compression bands used to compress the sleeve against the manhole frame shall be sixteen-gauge stainless steel conforming to ASTM A-240, Type 304, with a minimum width of one inch.
F. 
The top compression band shall have a shape and width sufficient to, when tightened, mechanically lock the sleeve and frame together.
G. 
The tightening mechanism on both bands shall have the capacity to develop the pressures necessary to make a watertight seal and shall have a minimum adjustment range of two diameter inches. Screws, bolts and nuts used on the bands shall be stainless steel conforming to ASTM F-593 and 594, Type 304.
H. 
The contractor shall field measure the outside diameter of the manhole frame base flange, the manhole chimney or grade rings and cone. These measurements are needed to obtain the proper sized rubber seal.
I. 
The surface of the manhole chimney or cone/corbel against which the sleeve is to be compressed shall be circular, clean, reasonably smooth and free of any loose material and excessive voids. If the masonry surface is rough or irregular and would not provide an effective seal, it shall be smoothed with an approved low-shrink mortar. A bead of butyl rubber caulk, conforming to AASHTO M-198, Type B, may be applied to the lower sealing surface of the sleeve to fill any minor irregularities in the masonry surface. Any flaws in the manhole frame, such as cracks, pits or protrusions, shall be repaired by either filling with mortar or grinding smooth.
J. 
The manhole chimney (when required by the Township) shall be reconstructed with an outside diameter within two inches of the frame base flange to grade as required, making provision for the three-fourths-inch-thick joint under the frame. The sealing surface for the bottom of the sleeve must be approximately two inches wide, reasonably smooth and circular, and free of any loose material or excessive voids. Mortar must be used to prepare this surface as needed.
K. 
A thick mortar course shall be placed on top of the chimney with the three-fourths-inch-thick spacers embedded in it at equal spacing. This three-fourths-inch thickness is not required if the flange is 1 1/2 inches or more larger in diameter than the chimney. Do not use any butyl gasket material such as E-Z Stik or Kent Seal in this joint.
L. 
The manhole frame shall be set on top of these spacers, centered on the chimney, and embedded in the mortar course. Mortar shall be raked free for a minimum depth of one inch from the outer surface, and the joint on the inner surface shall be toweled smooth.
M. 
Any imperfections shall be ground off or filled in on the edge of the manhole frame base flange, and any loose rust or scale shall be removed to provide a reasonably smooth, clean sealing surface. Strengthening ribs shall be cut back to be flush with the top and back 1/2 inch from the edge of the base flange.
N. 
If an extension is to be utilized, refer to the "external extension" specifications included within Subsection 6 of this section.
O. 
The sleeve around the manhole frame and chimney shall be placed and the top section of the sleeve shall be fit over and under the edge of the frame base flange. The top band area of the sleeve shall be lubricated with gasket lube.
P. 
The top compression band around the sleeve shall be placed and positioned with the long leg of the band extending over the top of the sleeve, and the short leg shall extend into the slot provided in the sleeve. Two studs must be installed in the appropriate set of holes and positioned in the adjustment slot. The band must be drawn tight with the special tool as required to provide a watertight seal. Tighten the two lock nuts while the band is in the drawn position. The bottom section of the sleeve shall be folded up, with a continuous bead of butyl rubber caulk applied to the center portion of the sealing fins around the entire circumference of the sleeve, and returned to its normal position.
Q. 
The bottom band recess area shall be lubricated, with the bottom band placed around the sleeve in the recess and the sleeve's position adjusted so the bands are approximately parallel. The studs must be installed and tightened as required for the top band.
R. 
The manhole frame shall be set on top of the three steel spaces, centered on the chimney, and embedded in a mortar course having a minimum finished thickness of 3/4 inch. The outer surface shall be raked free of mortar to a minimum depth of one inch, and the inner surface of this mortar joint shall be trowel finished. Butyl gasket material shall not be used in this joint.
S. 
The stainless steel bands must be positioned in their respective locations and individually tightened as required to provide a watertight seal after the rubber sleeve has been placed in the proper position around the manhole.
T. 
When an extension is used, it shall be positioned around the outside of the chimney seal sleeve such that the top of the extension fits into the bottom band recess of the sleeve. A bottom band must be positioned in each of the two band recesses of the extension and tightened as required to provide a watertight seal.
U. 
The area immediately around the manhole shall be backfilled with selected material using care not to damage the installed seal and extension.
6. 
External Extensions.
A. 
Extension sleeve shall be placed around the manhole frame and pulled over the chimney until the sealing fins extend down onto the manhole cone.
B. 
The chimney seal sleeve shall be placed around the manhole frame and chimney, fit the top section of the sleeve over and under the edge of the frame base flange, and lubricate the top band area of the sleeve with band lube.
C. 
The top compression band shall be placed around the sleeve and positioned with the long leg of the band extending over the top of the sleeve and the short leg extending into the slot provided in the sleeve. Two studs shall be installed in the appropriate set of holes, positioned in the adjustment slot, and the band drawn tight with the special tool as required to provide a watertight seal and tighten the two lock nuts.
D. 
The extension sleeve shall be positioned around the chimney seal sleeve such that the top of the extension fits into the bottom band recess of the chimney seal and the bands are parallel.
E. 
A flat bottom band shall be lubricated and placed around extension sleeve in the top band recess. Studs shall be installed and the band tightened as required for the external top band.
F. 
The bottom section of the extension shall be folded up with a continuous bead of butyl rubber caulk applied to the center portion of the sealing fins around the entire circumference of the sleeve and returned to its normal position.
G. 
The remaining flat bottom band shall be lubricated and placed around extension in the bottom band recess. The extension shall be adjusted so all bands are approximately parallel. The studs shall be installed and tightened as required for the other bands, completing installation.