Abstract: An anchor for an intermediate anchorage system including an anchor body having a first wedge-receiving cavity and a second wedge-receiving cavity. The first wedge-receiving cavity has tapered walls narrowing in diameter from the first side to the second side of the anchor body. The second wedge-receiving cavity has tapered walls narrowing in diameter from the second side to the first side of the anchor body. A polymeric encapsulation extends around the anchor body in liquid-tight sealing relationship therewith. A tendon is affixed within one of the first and second wedge-receiving cavities and extends outwardly from the anchor body.

Abstract: A concrete reinforcing bar support including a base, a support structure extending upwardly from the base, a first clamping member affixed to the support structure and extending upwardly above a top surface of the support structure, a second clamping member affixed to the support structure and extending upwardly above a top surface of the support structure, and a third clamping member affixed to the support structure and extending upwardly above the top surface of the support structure. The second clamping member has an interior surface generally facing the interior surfaces of the first and third clamping members. The first clamping member is separated by a space from the third clamping member. Ribs extend inwardly from the interior surfaces of each of the clamping members so as to compressively contact a reinforcing bar placed interior of the clamping members. The support structure has a generally H-shaped cross-section in a plane parallel to said base.

Abstract: A grout vent for a tendon-receiving duct having a tubular fitting with an interior passageway, a nut secured around an exterior surface of the tubular fitting, and a seal extending around the tubular fitting and residing against a surface of the nut. The tubular fitting has a connector at an end thereof for engaging an interior surface of the duct. The tubular fitting extends through a hole formed in a corrugation of the duct so that a shoulder of the connector will abut an interior surface of a wall of the duct. The nut is threadedly engaged with an exterior surface of the tubular fitting so as to exert a compressive force against the seal. A grout line extends through the interior passageway of the tubular fitting so as to allow grout to be injected into an interior passageway of the duct.

Abstract: A method and apparatus for forming an anchorage of a post-tension system in which a tendon is positioned within a cavity of an anchor such that an end of the tendon extends outwardly of the cavity, a plurality of wedges are mechanically inserted within the cavity between the tendon and a wall of the cavity, and pressure is applied to an end of the tendon such that the tendon and the wedges are in interference-fit relationship with the cavity. A compression mechanism is used having a cylindrical member and a plunger extending in a channel of the cylindrical member. The wedges are attached to the cylindrical member and the cylindrical member is moved toward the cavity such that the wedges enter a space between the tendon and the wall of the cavity. The plunger applies a compressive force to the end of the tendon when the end of the tendon is in the channel of the cylindrical member.

Abstract: A concrete reinforcing bar support including a base, a support structure extending upwardly from the base, a first clamping member affixed to the support structure and extending upwardly above a top surface of the support structure, a second clamping member affixed to the support structure and extending upwardly above a top surface of the support structure, and a third clamping member affixed to the support structure and extending upwardly above the top surface of the support structure. The second clamping member has an interior surface generally facing the interior surfaces of the first and third clamping members. The first clamping member is separated by a space from the third clamping member. Ribs extend inwardly from the interior surfaces of each of the clamping members so as to compressively contact a reinforcing bar placed interior of the clamping members. The support structure has a generally H-shaped cross-section in a plane parallel to said base.

Abstract: An anchor for an intermediate anchorage system including an anchor body having a first wedge-receiving cavity and a second wedge-receiving cavity. The first wedge-receiving cavity has tapered walls narrowing in diameter from the first side to the second side of the anchor body. The second wedge-receiving cavity has tapered walls narrowing in diameter from the second side to the first side of the anchor body. A polymeric encapsulation extends around the anchor body in liquid-tight sealing relationship therewith. A tendon is affixed within one of the first and second wedge-receiving cavities and extends outwardly from the anchor body.

Abstract: An intermediate anchorage for a post-tension system including an anchor member, a tendon extending through an interior passageway of the anchor and a sleeve formed of a heat shrink material and extending over the unsheathed portion of the tendon. The sleeve is affixed in heat sealed compressive contact with a surface of the anchor member and with an exterior surface of the sheathed portion so as to maintain the unsheathed portion in a liquid-tight environment. The sleeve can be a tubular member, a split tubular member or a wrapping material. The anchor member is an encapsulated anchor having a tubular extension extending outwardly therefrom such that the sleeve is secured in sealed compressive contact with the tubular extension.

Abstract: A tendon-receiving duct having a tubular body with an interior passageway and a plurality of corrugations extending radially outwardly of the tubular body. Each of the plurality of corrugations has an interior opening to the interior passageway. The tubular body has longitudinal channels formed on the tubular body so as to establish fluid communication between adjacent pairs of the corrugations. The tubular body is formed of a polymeric material. The channels are formed on the outer wall of the tubular body and open to the interior passageway of the tubular body and extend for the length of the tubular body.

Abstract: A pocketformer apparatus for post-tension construction including an anchor member having a wedge-receiving cavity therein, a tubular member having a portion extending through the wedge-receiving cavity, a first securement member affixed to a first end of the tubular member, a cup member positioned over the tubular member, and a second securement member affixed to a second end of the tubular member. The cup member is interposed between the second securement member and the anchor member. The tubular member also extends through a hole in a form board. The second securement member is positioned on one side of the form board. The cup member and the anchor member are positioned on an opposite side of the form board. A tendon extends through the tubular member.

Abstract: An intermediate anchorage system including an anchor member with an interior passageway, a tendon extending through the interior passageway of the anchor member, an elastomeric seal having one end affixed to the anchor member and extending outwardly therefrom, and a rigid ring member detachably received within an opposite end of the seal. The ring member has an inner diameter greater than an outer diameter of the tendon. The opposite end of the seal is in liquid-tight compressive contact with the exterior surface of the tendon when the ring member is detached from the seal. The interior passageway of the anchor, the seal and the ring member have an inner diameter, when joined together, which is larger than the outer diameter of the tendon so as to allow the anchor member, the seal and the ring member to slide along the length of the tendon.

Abstract: A post-tension construction apparatus including a concrete slab, an anchor embedded in the concrete slab, a tendon fixedly received by and extending through the anchor so as to have a portion extending outwardly of one end of the anchor, and a pocket formed in the concrete slab and extending outwardly from one end of the anchor. The pocket has a wall extending outwardly from one end of the anchor. The wall has a pivot point formed thereon. A cutting torch is removably received within the pocket. The cutting torch has a pivot formed thereon which is pivotally engagable with the pivot point of the pocket.

Abstract: An improved anchor for a post-tension system having an anchor body with an internal wedge-receiving cavity. The cavity has a first portion of constantly diminishing diameter extending inwardly from one end of the anchor body. The first portion has an angle of taper with respect to a center line of the cavity. The cavity has a second portion extending inwardly from an opposite end of the anchor body. The first portion and the second portion are coaxial and communicate with each other. The second portion has an angle of taper which is less than the first portion. The first and second portions are cast with the anchor body. The angle of taper of the second portion is less than seven degrees or a negative angle with respect to the center line. The second portion of the cavity has a radiused edge curving outwardly from the cavity to the opposite end of the anchor body. The radiused edge is flush with the second portion of the cavity.

Abstract: A splice chuck having a body with a first end and a second end and a passage extending therethrough, a first collar received within the first end of the body and having a tapered interior, a second collar received within the second end of the body and having a tapered interior, a first wedge received within the tapered interior of the first collar, a second wedge received within the tapered interior of the second collar, a cap member having a surface abutting an end of the first wedge within the passageway of the body, and a resilient member having one end exerting a compressive force onto the second wedge and an opposite end exerting a compressive force onto the cap member. The cap member includes a tubular section having an interior area and an annular section extending radially outwardly from an end of the tubular section. A cover extends over the opposite end of the tubular section. The annular surface contacts an end of the first wedge.

Abstract: A post-tension anchor system having a first tendon with a sheathed portion and an unsheathed portion, a second tendon with a sheathed portion and an unsheathed portion, an anchor receiving the first tendon therein so as to have the unsheathed portion of the first tendon extending outwardly from one end of the anchor, a splice chuck receiving the unsheathed portion of the first tendon at one end thereof and receiving the unsheathed portion of the second tendon at an opposite end thereof, and a cover extending over the splice chuck so as to have one end extending in liquid-tight relationship with the sheathed portion of the second tendon. The cover also includes a cap member formed at an opposite end which is engaged within the cap-receiving section of the encapsulation of the anchor.

Abstract: A device for stripping a cable having a body with a channel extending therethrough and a knife affixed to a narrow end of the body and having a cutting edge extending at an acute angle relative to the longitudinal axis of the body. The body has a generally constant diameter portion. The body tapers so as to narrow in diameter toward the narrow end. The channel opens at both ends of the body. The knife is affixed at a bottom of the channel at the narrow end. The acute angle is between 70 and 89 degrees. An insert element is rigidly affixed to the narrow end of the body. The knife is attached to the insert element. This insert element is non-movably attached to the narrow end of the body.

Abstract: An apparatus for sealing an intermediate anchorage of a post-tension anchor system having a cap with an attachment section thereon. The attachment section is adapted to allow the cap to be connected to an end of the anchor body. The cap has a tubular member extending outwardly from the attachment section. The tubular member has an opening at an end opposite the attachment section. The cap has a grease fitting formed thereon. The grease fitting is adapted so as to allow grease to be introduced into the interior passageway of the tubular member. The attachment section and the tubular member are integrally formed together of a polymeric material. A seal is affixed to the open end of the tubular member so as to form a liquid-tight seal over the sheathed portion of a tendon extending therethrough.

Abstract: A device for stripping a cable having a body with a channel extending therethrough so as to open at a narrow end of the body and a knife affixed to the body so as to have a blade with a cutting edge extending upwardly into the channel. The blade extends at an angle of between 70 degrees and 89 degrees with respect to the longitudinal axis. The body includes a handle and a cutting head affixed to an end of the handle. The channel extends through the handle and the cutting head. The knife is affixed to the cutting head. The handle is compressible so as to reduce the diameter of the channel upon the application of a squeezing force onto the handle. The handle has projections extending into the channel. The cutting head has a notch extending along an outer surface of the cutting head. The knife is received within the notch. The knife is formed of a stamped metal material.

Abstract: An apparatus for attachment to a cutting torch used for the severing of a tendon in a post-tension anchor system. The apparatus includes a first shield having an opening formed therein and adapted to allow the tendon to pass therethrough, a tubular extension extending outwardly of the first shield at the opening, and a bracket member affixed to the first shield and adapted to attach the cutting torch such that the cutting torch resides on a side of the first shield. The tubular extension has an interior adapted to extend around the tendon on the opposite side of the first shield. A second shield is connected to the bracket member. This second shield has an opening adapted to allow the tendon to extend therethrough. The second shield is arranged in spaced parallel relationship to the first shield. The cutting torch has a nozzle which is interposed between the first shield and the second shield.

Abstract: An improved anchor for a post-tension system having an anchor body with an internal wedge-receiving cavity. The cavity has a first portion of constantly diminishing diameter extending inwardly of one end of the anchor body. The anchor has a second portion of constant diameter extending inwardly from an opposite end of the anchor body. The first portion and the second portion are coaxial and communicate with each other. The first and second portions are cast with the anchor body. The first portion has a wide end opening at the one end of the body and a narrow end having a diameter of no less than the diameter of the second portion.