Abstract: Systems for leaching liquid waste, particularly waste water. More particularly a cylindrical conduit or pipe for use in leaching systems. The pipe further has axially directed cuts or apertures in conduit/pipe valleys, has ridges, channels and grooves over which may be laid either single or multiple layers of fabric. The corrugated pipe may have slots or slits or V-grooves in and on the various portions of the pipe such as the outer-facing surface of the ridges, the end portion of the ridges, the side wall of the groove or through the bottom portion of the groove, i.e., the valleys. The cylindrical conduit disperses moisture away from the conduit through capillary action, wicking into a surrounding material. A perforated cylindrical conduit is one method permitting wicking. The surrounding material provides capillary action to transmit moisture away from the cylinder or conduit. These surrounding materials include sand, gravel, plastic fibers, wood products, slag, and ash.

Abstract: An elongated plastic chamber utilized for disposal of stormwater has a corrugated wall structure having successive peaks and valleys. The peaks and valleys are connected by upstream and downstream web panels. A series of apertures is disposed in the upstream web panels. The associated facing downstream web panel is smoothly integrated with the corresponding valley to form a curved surface which is concave with respect to the associated peak and serves to deflect outwardly from the chamber water emergent from the apertures. The effect of the interaction of the apertures with the curved surface is to minimize deposition of sediment within the chamber.

Abstract: Heat transfer between a body and its surrounding fluidous environment is reduced by placing at least one baffle-insulator adjacent to the body, such that the baffle-insulator which has a thermal conductivity of less than about 5 watts/meter-° K., disturbs, modifies, and/or weakens fluidous environment flow about the body, thus reducing heat transfer between the body and its environment.

Abstract: A protective shield for elongated underground utilities such as an elongated underground utility strand or pipe is disclosed. The protective shield includes a foldable elongated flexible sheet of shock absorbing material adapted to both overlie and underlie the elongated underground utilities. The foldable elongated flexible sheet of shock absorbing material includes at least one longitudinally extending fold line that extends in the same direction as the elongated underground utilities and may be transversely offset from a longitudinal midpoint of the foldable elongated flexible sheet of shock absorbing material. In some instances, the foldable elongated flexible sheet of shock absorbing material may include two longitudinally extending fold lines that are transversely offset on each side of a longitudinal midpoint area of the foldable elongated flexible sheet of shock absorbing material.

Abstract: A process and apparatus for introducing a cable into a channel, which is formed into a heated surface of solid ground, such as asphalt, displaces the material to form a channel, inserts the cable and then reintroduces the displaced material back into the channel to refill the channel.

Abstract: The instant invention is a lawn and garden edging system which provides for a border device positionable adjacent walks and plant beds with provisions for the attachment of watering and lighting components. An insertion structure is provided which is inserted into the ground by use of a wooden handle placed into an aperture allowing an individual to stand on an upper end of the structure allowing the installer's weight to force the structure into the ground. The upper portion of the structure forms a passageway with apertures available for positioning watering components, electrical components may also be attached for connection to lighting products used to highlight trees, bushes or a home. A second embodiment of the invention provides a conduit for attachment to conventional extruded plastic edging dividers, the conduit provides the formation of a passageway for placement of the aforementioned watering components and electrical connections.

Abstract: Heat transfer between a body and its surrounding fluidous environment is reduced by placing at least one baffle-insulator adjacent to the body, such that the baffle-insulator which has a thermal conductivity of less than about 5 watts/meter-.degree.K, disturbs, modifies, and/or weakens fluidous environment flow about the body, thus reducing heat transfer between the body and its environment.

Abstract: Ramp apparatus conveying water across a thoroughfare includes a pair of ramp elements spaced apart from each other with a liquid carrying element disposed between them. The ramp elements and the liquid carrying element are secured together as an integral unit, and coupling elements are disposed in opposite ends of the ramp for coupling to hoses, etc. The apparatus is designed to be disposed across the thoroughfare, and accordingly has a relatively low profile for ease of traffic problems as traffic moves over the ramp apparatus and at the same time is able to carry a substantial amount of fluid or liquid, such as water, from one side of the thoroughfare to the other side.

Abstract: A leaching system (10) includes arched leaching chamber sections (12) and an angled adapter (18) connected adjacent chamber sections at a 22.5.degree. angle. The adapter includes a first portion (122) having sidewalls (140, 142) spanned by a vaulted portion (144) and a female end collar (126). A second end portion (124) has sidewalls (140, 142) spanned by a vaulted portion (144) and a male end collar (130). The first and second end portions are connected at an arched, vertical ridge (136). The adapter connects the leaching chamber sections in a nonlinear configuration to curve the leaching system to follow contours and avoid obstacles.

Abstract: An in-ground installed pipe system, laid in expansive type soils, that has a plastic-like wrapping of the main pipe area and a plastic-like covered cushion layer of the joint connections, to provide protection to a pipe system against pipe movement and joint connection disruption, during the swelling and shrinkage process of the surrounding expansive soil, during seasonal variations of moisture content of the soil. The plastic-like wrapping of the pipe section is usually installed prior to installing the pipe into the trench. The plastic-like covered cushion layer is installed around the pipe joint connection, in the trench, after the pipe is installed into the end of the previously laid pipe section.

Abstract: A template is provided having an expandable base portion (12) with a plurality of raised side cavities (24) to receive and retain underground cables prior to, during and after trench backfilling. The base includes a pair of slidably mounted wings (14) to assist in bridging the trench and stabilizing the base on ground adjacent the trench. A removable back member (28) is attached to the base to bridge the cavities and secure the cables therein. A guide (36) is provided for receiving a grounding rod (38) and a central opening (40) is formed in the base as a hand hold and to permit backfilling under the base when needed. In use, the base is mounted over the trench at the desired location for the padmount transformer. The cables are then secured to the base, and the trench is backfilled with the base being grounded. Afterwards, the cables are released from the base and attached to the padmount transformer.

Abstract: An elongated enclosure designed to withstand internal pressure which may exceed 10 bars and forming a sealed, fluid-tight tubular space having a truncated transverse section, the enclosure comprising a lower part formed by a rigid concrete slab resting on the ground and an upper part constituted by a thin metal wall in the shape of a curved arch extending between two lateral ends parallel to the longitudinal axis and connected to the slab, each of which is attached by a longitudinal junction piece connected tangentially to the lateral end of the arch.

Abstract: A leaching chamber for burial in the ground includes non-symmetrical corrugations extending laterally across the leaching chamber. Each corrugation has a ridge and a shoulder with the ridge being higher than the shoulder and sloping down from the ridge to the shoulder. Additionally, the ridge of each corrugation is also wider than the shoulder. The corrugations are oriented relative to each other such that the ridge of each corrugation is adjacent to the shoulder of an adjoining corrugation.

Abstract: An apparatus is provided for conveying flow across a traffic way between a first flow conduit and a second flow conduit. The apparatus includes a ramp member defining an interior region, a first coupling attachment coupling to the first flow conduit for delivering flow to the interior region, a second coupling attachment coupling to the second flow conduit to deliver flow from the interior region to the second flow conduit, and connectors for connecting both coupling attachments to opposite ends of the ramp member. A kit having components to allow assembly of such an apparatus in the field is also provided. A method for conveying flow across a traffic way between a first flow conduit and a second flow conduit is also provided.

Abstract: System for vapor recovery without formation of fluid blockages includes a vapor source, a fluid collection tank for collecting vapor, and a vapor recovery pipe extending between and fluidly collecting the vapor source and the fluid collection tank. The vapor recovery pipe slopes vertically downwardly from the vapor source to the fluid collection tank so that vapor flows into the fluid collection tank. The vapor recovery pipe has an elongated cross section, and a direction of elongation of the cross section extends substantially vertically. The vapor recovery pipe is engineered and is installed in such a manner that the vapor recovery pipe resists bending in a substantially vertical plane and allows bending in a substantially horizontal plane. Accordingly, the vapor recovery pipe according to the invention can be installed without surveying equipment, overcomes surface irregularities, and by resisting bending in a vertical direction ensures that no fluid blockages are formed along the length thereof.

Abstract: An underground tubular structural system capable of having a very large cross section, for the construction of urban or rural conduits, underground passages and other civil engineering installations. At least two conduits (S1) (S2), namely, a high conduit (S2) and a low conduit (S1), are superposed and at least the high conduit (S2) is formed in cross section by at least two prefabricated elements, namely a lower element (4) (6) in the shape of an inverted U capping the low conduit (S1) and bearing along two lateral sides (14) of the latter and an upper covering element (2') (5) capping the lower element (4) (6) of the high conduit and closing the section (S2) towards the top. One or more supplementary conduits can easily be added to an already existing conduit.

Abstract: A liner pipe comprising sections of polyethylene pipe connected by articulated gasketed joints of bell and spigot design which are specifically adapted for ease of compression lining of large diameter pipe with minimum disruption to surface traffic and pipeline flow.

Abstract: A conduit formed of extruded polymeric material, which outer surfaces are continuously intrinsically lubricated by a reserve of active lubricious agents which migrate outwardly from within the composition to such surfaces.

Abstract: A fluid-conveying conduit of large cross section for conveying fluid under high pressure, formed by assembling on a laying surface a plurality of prefabricated longitudinal elements placed in sequence and comprising, in transverse section, a lower base and a vault having two lateral edges connected to the base by sealingly joining longitudinal members. The longitudinal joining members consist of two parallel metallic profiled members rigidly connected to one another by at least one crosspiece and fixed to a slab forming the base of the conduit, and the vault consists of at least one thin wall element and is sealingly fixed by its two lateral edges along two longitudinal profiled members.

Abstract: An external pipe protector for protecting steel or plastic pipe against damage is disclosed. The protector includes a flexible sheet of shock absorbing material which is shaped and sized to encircle at least part of the length of the pipe. Opposite ends of the shock absorbing material are positioned and secured in overlapping relationship to one another by fastening elements provided on the opposite overlapping ends of the shock absorbing material. The fastening elements are confronting adhesive surface attached to the opposite overlapping ends of the shock absorbing material. Strippable covers are initially attached to the adhesive surface prior to use thereof, and are easily removed to enable the adhesive surfaces to be brought into confronting relationship to one another.

Abstract: An underground tubular structural system capable of having a very large cross section, for the construction of urban or rural conduits, underground passages and other civil engineering installations. At least two conduits (S1) (S2), namely a high conduit (S2) and a low conduit (S1), are superposed and at least the high conduit is formed in cross section by at least two prefabricated elements, namely a lower element (4) (6) in the shape of an inverted U capping the low conduit (S1) and bearing along two lateral sides (14) of the latter and an upper covering element (2') (5) capping the lower element (4) (6) of the high conduit and closing the section (S2) towards the top. One or more supplementary conduits can easily be added to an already existing conduit.

Abstract: In septic systems for handling household waste water or in clear water drainage applications, lightweight molded polyethylene galleries are used to form the drain field. The galleries can be axially aligned in end-to-end relationship with each gallery defining an interior hollow chamber. A unique latching system is used to attach adjoining galleries to one another. A perforated delivery conduit extends through and introduces effluent into the hollow chambers of the galleries where it is allowed to seep therefrom into the surrounding earth through the open bottoms of the galleries or through infiltration apertures in the walls of the galleries.

Abstract: A fluid-conveying conduit of large cross section, formed by assembling on a laying surface a plurality of prefabricated longitudinal elements placed in sequence and comprising, in transverse section, a lower base and a vault having two lateral edges connected to the base by sealingly joining longitudinal members, which consist of two parallel metallic profiled members rigidly connected to one another by at least one crosspiece and fixed to a slab forming the base of the conduit, and the vault consists of at least one thin wall element and is sealingly fixed by its two lateral edges along two longitudinal profiled members. The invention applies especially to the construction of conduits for conveying fluid under pressure, for example for water conveyance, urban heating or penstocks.

Abstract: A magnetically detectable plastic, e.g., polyethylene, polyvinyl, etc., pipe for underground use comprises a hollow tubular plastic pipe having particles of magnetic material embedded in plastic and secured integrally with the wall of the pipe. The magnetic particles are of iron oxide or barium ferrite and of a size, shape, distribution and proportion such that the plastic pipe may be easily detected by magnetic detection apparatus on the surface when the plastic pipe is buried at a selected depth under the ground. The magnetic particles are uniformly distributed throughout the thickness and uniformly distributed around the entire circumference of the plastic pipe or the magnetic particles may be distributed in discrete portions of the plastic pipe, as for example, a uniform outer layer of the pipe or in stripes or strips extending along the pipe.

Abstract: A containment casing (10) for a deep well/gravity pressure reactor vessel includes a plurality of casing sections (11) each having a wall portion (20) with corrugations (21). An inner liner (24) and an exterior liner (25) prevent grout material (13) from entering the corrugations (21) during installation. Additionally, inner liner (24) is capable of supporting the hanging weight of the casing sections (11), and yet is susceptible to failure due to stresses induced by thermal fluctuations. The corrugations (21) allow for thermal expansion without a buildup of compression stresses and further allow for angular deviations of the casing (10).

Abstract: A synthetic resin pipe intended for underground use having an increased strength but reduced wall thickness. In accordance with the invention, a reinforcing member, in the form of a perforated belt, is embedded in or fused to the resin material of the pipe and extends along top portions and at least portions of the side walls adjacent to the top portions of the corrugations of the pipe.

Abstract: The locating of structural members disposed within the interstices of a concrete member can be accomplished by employing at least one indicator capable of showing the position of the structural member. The indicator also can show the directional location of the support members. The indicator of the present invention generally connects to a post member. This post member provides vertical support for the indicator system. A clamping assembly is attached to the post member and connects the structural member to the indicator system for fixing the location of the structural member. The clamping system can also identify the location of the structural member, and the indicator can then be provided to show the directional line of the structural member. Typically, the post member is sized to a predetermined length so that the longitudinal dimension of the indicator system corresponds to the thickness of the concrete member.

Abstract: In a subterranean heat insulated pipe system as laid with angellike bendings between straight pipe lengths, i.e. a district heating pipe underneath a street angle, the conventional bending elements are substituted by pipe elements joined so as to form a bending run of a relatively large bending radius, which, depending of the pipe size, has a minimum value, by which the pipe bending by itself and by interaction with the earth is able to take up the expansion and contraction forces, which are created in the pipe in response to temperature changes therein. The said minimum value has been found to be so low that in many instances it is hereby possible to avoid the sharp bending elements with their associated heavy problems due to expansion effects.

Abstract: This conduit locator is designed to indicate the location of an end of a conduit after concrete is poured over the conduit. Primarily, it consists of an adhesive tape having a multiple number of spaced rods adhered so as to extend from an edge of the tape, and the tape is adhered to the open end of the conduit which may be plugged or covered with out interfering with the rods extending upward. The rods are of a springy plastic and protrude upward after the concrete is poured over the conduit enabling the end of the conduit to be located beneath the surface of the concrete.

Abstract: A buried conduit consisting, in transverse cross-section, of a lower component (2) and a covering upper component (1) which bears on the upper part of the side walls (22) of the lower component (2) by means of lengthwise bearing members (3). According to the invention, the upper component (1) forms an arched vault made so as to have sufficient flexibility to distort slightly under the effect of the forces to which it is subjected, and the lower component (2) is made so as to resist, without distortion, the forces transmitted by the ground and by the upper component (1), both components being fixed to each other along the lengthwise bearing members (3) and the latter consisting of socket joints, so as to permit the bearing parts of the distortable upper component to pivot without sliding relative to the undistortable lower component.

Abstract: A pipe supporting dam assembly and method for pipeline construction employing a planar dam sheet with a collar and a flexible sleeve for receiving and supporting the pipe, and clamping means to seal the collar to the outside of the pipe to prevent fill material in the trench being washed away by groundwater along the outside surface of the pipe, particularly in the case of sloping pipeline construction.

Abstract: An improved culvert drainpipe and method of utilizing the same is disclosed characterized by use of an elongate thin wall extruded drainpipe element formed having a generally S-shaped configuration defining a pair of main flow channels and including plural curvilinear projections extending axially along the exterior of the element. The distal edges of the drainpipe element cooperate with one or more elongate wall extensions formed on the interior of the drainpipe element which prevent radial compression and/or collapse of the drainpipe element and deter debris from entering into the main the flow channels. In use, multiple drainpipe elements are bundled together in a generally parallel axis orientation whereby the curvilinear projections serve as secondary flow channels, improve debris segregation, and maintain space between adjacent drainpipe elements.

Abstract: A thermoplastic device for leaching sewage system effluent into the earth has the shape of an inverted trough. Its sidewalls have slot shaped perforations; above each slot is a lip; beneath each slot is one or more protuberances, preferably rectanguloid in shape. The combination of lips and protuberances prevent compaction of the earth against the sidewalls when the devices are buried without the use of stone fill. They permit the formation of a good biocrust layer and facilitate the exfiltration of liquid into the earth.

Abstract: A buried conduit consisting, in transverse cross-section, of a lower component (2) and a covering upper component (1) which bears on the upper part of the side walls (22) of the lower component (2) by means of lengthwise bearing members (3). According to the invention, the upper component (1) forms an arched vault made so as to have sufficient flexibility to distort slightly under the effect of the forces to which it is subjected, and the lower component (2) is made so as to resist, without distortion, the forces transmitted by the ground and by the upper component (1), both components being fixed to each other along the lengthwise bearing members (3) and the latter consisting of socket joints, so as to permit the bearing parts of the distortable upper component to pivot without sliding relative to the undistortable lower component.

Abstract: An underwater cryogenic pipeline system comprising an insulated underwater pipeline in an integral open frame is disclosed. The pipeline is anchored to the frame at a plurality of spaced apart locations. Bellows-type expansion joints between the pipe anchors compensate for contraction in the pipeline. The frame, which is anchored to the soil at at least one location, resists axial forces in the system and wave and current loadings. The system is preferably fabricated in modules and assembled on site.

Abstract: A method of salvaging a pipe conduit which is buried under ground, especially a sewer pipe, includes soaking a resin-absorbing inner layer of a lining hose, which further includes an impermeable outer layer that outwardly adjoins and surrounds the inner layer, with a first resin. The lining hose is then placed into the pipe conduit. A surface region of a calibrating hose which is to contact the inner layer of the lining hose is provided with a layer containing a second resin. The lining hose is then shaped to conformingly line the pipe conduit. Such shaping involves introducing the calibrating hose into the lining hose in such a manner that the resin-containing layer of the calibrating hose contacts the inner layer of the lining hose and pressing the calibrating hose against the lining hose to urge the latter against the pipe conduit. Finally, at least one of the first and second resins is hardened.

Abstract: The invention relates to a modular construction system for a covered structure of large section produced by assembling prefabricated elements, namely floor elements (1), side elements (2) placed on each side of the floor, and roof elements (4).

Abstract: A kit for forming a secondary confinement installation for protecting earth from contamination due to leakage and spills from pipelines in small installations, such as service stations. The kit includes long trough sections and short connector sections with joints therebetween which maintain a level floor. The connector sections may have various shapes, such as right angle sections, half-right angle sections, T-sections, as well as a few special purpose sections. The special purpose sections include a sump section located at the low point of the installation, a dispenser unit section intended to provide catch basis for fluid dispensers and box sections which protect pipe egress zones at storage tanks.

Abstract: An insulating material for pipes which consists of a layer of insulation and a sleeve that surrounds the pipe with the insulating layer being asymmetrically arranged relative to the pipe which is to be insulated.

Abstract: A pipe made of a synthetic resin and suitable for underground use which has an improved strength and reliability. In a first embodiment, a helical reinforcing rib is provided by extruding together with a band of resin material which forms the main body of the pipe a corrugated tube. By passing the corrugated tube through the extrusion die, the danger of the wall thickness of the main body of the pipe being reduced is eliminated. In a second embodiment, the reinforcing rib is formed by helically winding a reinforcing member having at least an outer coating of either the same material which forms the main body of a straight-wall pipe or a material having a high fusibility therewith. In this case also, the reinforcing rib can be made from a corrugated tube having a semicircular cross-section.

Abstract: An energy conducting cable loop enclosure which receives and retains an above-ground loop of a flexible conductor cable in an underground energy distribution system, particularly in a system for the supplying of electrical energy. The main body structure, which is upright in normal placement, is of elongate rectangular shape with an above-ground and a below-ground portion and having an open bottom and a closed top. At the junction of these two portions, supporting feet are located which bridge a hole in the ground, in which the below-ground portion is inserted, to rest on the surrounding ground. A removable front plate provides access to the interior of the above-ground portion. The above-ground portion contains a cable hoop having a radius at least as great as the minimum allowable bending radius of the cable on which a loop of cable is trained after being led through the open bottom and out through the open above-ground front.

Abstract: In the cathodic protection of tubular goods transporting fluids above 100.degree. F. with aluminum or zinc anodes, the output efficiency of the anode is increased by thermally insulating the anode from the tubular goods on which the anode is placed.

Abstract: The bracket described herein comprises a device for supporting and holding the sidewall of a conduit trench. These conduit trenches are designed to lie on the ground or may be submerged with the top at ground level. Pipe, conduit, electrical cables, etc. may be laid in the trench with the sidewalls held in place by this new bracket. The bracket comprises two angle irons spaced parallel to each other and fastened to each other by crosspieces at the ends thereof. The angle irons have slots or grooves at each end thereof into which the flat base of a vertical member may be inserted. The flat piece of this base is inserted into the pair of slots or grooves to the end of the angle irons where the crosspiece will stop the movement of the vertical piece. The crosspiece serves as a base for the retaining wall and the vertical piece of the bracket holds the wall in a vertical position.

Abstract: A foldable conduit has a generally parabolic arched portion and a flat base. The arched portion comprises a pair of corrugated side walls which are connected with a hinge. The corrugations comprise alternating peak portions and valley portions. Each peak portion comprises a pair of generally vertical corrugation walls and a top wall connected with the corrugation walls. The top wall has a pair of ribs, each adjacent one of the pair of corrugation walls. Between the ribs is a recessed area. The ribs and recessed area are arcuate and generally undulating in cross section. The valley portion comprises an arcuate valley wall connected with the corrugation walls of adjacent peak portions. The flat base is a flexible sheet which may be perforated to permit fluid ingress and egress. The hinge and flexible base allow the side walls to be folded together with the base folded in between for more compact shipment.

Abstract: A method of anchoring a line, such as a pipeline, to a support, and in particular a sea-bed, comprises the steps, at each anchoring point, of drilling holes in the support on both sides of the line, bedding piles in these holes, passing at least one saddle clamp around the line, securing the ends of the saddle clamp to the piles, and injecting a filling material, which may be a settable material, into an inflatable body arranged between the line and the saddle clamp.Devices for carrying out the method are also described.

Abstract: A method is disclosed for the construction of structures for tunnels, culverts, and pressure pipes of any size and shape, straight or curved, constant or variable cross section. The method requires very little formwork, with all work done on site. The method discloses the casting of a lower half of the structure as a continuous element, and the method of utilizing this half as a form in which modular lengths of the upper half of the structure are cast, lifted, inverted, and lowered to form the complete structure. Various methods are disclosed for joining the modules comprising the upper half of the structure to provide various degrees of structural continuity and fluid tightness.

Abstract: The apparatus and method of this invention includes the use of a pipe supporting apparatus or apparatuses having a generally horizontal elongate support member with spaced apart clamping units thereon arranged for clampingly suspending flexible pipe sections from the elongate support member, and the elongate support member is adjustably supported for vertical adjustment on substantially vertically disposed elongate anchoring members adapted to be driven into a grade surface so as to firmly anchor the respective pipe supporting apparatus against displacement to maintain the same and the pipe section or sections supported thereby against horizontal or vertical displacement during the pouring and spreading of aggregate around the pipe section or sections.

Abstract: A composite underground shaft lining assembly particularly suitable for use as a leak proof water conduit is formed with a plurality of annular concrete sections joined together by interposed layers of flexible joint material forming a composite concrete cylinder, with a composite steel cylinder formed of annular steel sections being arranged about the outer cylindrical surface of the composite concrete cylinder. The annular steel sections of the composite steel cylinder are joined together by spring rings located adjacent the flexible joints formed between the annular concrete sections.

Abstract: Thermal insulation, and method of applying the same, for steam lines or other conduits carrying fluid at temperatures differing from the ambient air or ground temperatures, the structure and the method being useful in new construction and especially in replacement of deteriorated insulation in old construction. A trough-like supporting structure (e.g., the lower half of an original circular casing containing the conduit and original deteriorated insulation) is coated with a permanently flexible waterproof coating, then a body of foamed insulating material is built up on this coating, to encompass the conduit, then a permanently flexible waterproof coating is applied over the body of foamed insulation to join in sealing relation to the waterproof coating previously applied to the supporting structure.

Abstract: A transmission system for handling materials moving underground comprising a plastic pipe having metallic material of relatively high electrical or electronic conductivity and sensitivity secured to the pipe body. When the pipe is installed in the ground, the metallic material will be automatically buried in association with the pipe body. Detecting means suitable for sensing the presence of the conductive material can then be employed for locating the pipe whereby digging operations or other activities can be engaged in without the danger of damaging the pipe.