Ancon KSN Anchor Box

Ancon KSN Anchor Box

Leviat Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Cost-effective slab-to-wall continuity system with four-step EC2-compliant design method.

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Description

This innovative anchor box provides a cost-effective design solution which minimizes rebar congestion in both the slab and the wall, simplifies bar scheduling and is quick and easy to install with no requirement for manual bar straightening on site.

Ancon’s internally threaded KSN Anchors, supplied in a metal casing and used in combination with Bartec Plus parallel-threaded reinforcing bars, can now be detailed in a single row along the slab section centreline.

KSN Anchors used at slab-to-wall connections, subjected to a combination of shear and tensile loads, can be designed by following a four-step EC2-compliant design method. The design method has been developed by Ancon and independently verified by the Department of Civil and Structural Engineering at the University of Sheffield, UK.

There are eight standard anchors in the KSN range. When used for shear connections, KSN Anchors are delivered to site pre-assembled as independent rows of anchors fixed with hexagon head screws to the back of a galvanized metal casing featuring a dimpled surface to provide an effective concrete bond.

Features and benefits:

  • KSN Anchor Technical Approval TA 5061.
  • Eliminates risks associated with on-site bar straightening.
  • Virtually unlimited continuation bar length. Suitable for EC2 lap lengths.
  • Easy visual check of correct bar engagement.
  • Simple to schedule and fast to install.
  • No torqueing required.
  • Reduces reinforcement congestion.
  • EC2 indented construction joint.
  • Independently-verified design method.

General information

Uniclass 2015

Pr_20_29_03_77 Socket anchorsPrimary

CAWS

E42/320 Cast-in sockets

Specification data - Socket anchors

Product Reference

Ancon KSN Anchor Box

Width

85 mm

105 mm minimum slab thickness.

120 mm

140 mm minimum slab thickness.

150 mm

170 mm minimum slab thickness.

170 mm

190 mm minimum slab thickness.

190 mm

210 mm minimum slab thickness.

220 mm

240 mm minimum slab thickness.

250 mm

270 mm minimum slab thickness.

KSN Anchors

KSN12M

For use with 12 mm diameter reinforcing bar.

KSN12S

For use with 12 mm diameter reinforcing bar.

KSN16L

For use with 16 mm diameter reinforcing bar.

KSN16M

For use with 16 mm diameter reinforcing bar

KSN16S

For use with 16 mm diameter reinforcing bar.

KSN20L

For use with 20 mm diameter reinforcing bar.

KSN20M

For use with 20 mm diameter reinforcing bar.

KSN20S

For use with 20 mm diameter reinforcing bar.

HorizontalSpacing

Insert requirement, consult manufacturer for information.

Standard product features

KSN Anchors:

There are eight standard anchors in the KSN range. They are manufactured from highly reliable Cr-Mo alloy steel with a minimum 15% elongation. The head is formed by hot forging to minimize material usage and improve the strength characteristics. The anchor is subsequently machined to incorporate a metric thread. Independent tests have verified the direct pull out strength of the anchors. UK CARES have independently assessed the KSN Anchor.

The Bartec Plus system produces a full strength joint. The bar end is cut square and enlarged by cold forging. This increases the core diameter of the threaded portion of the bar to ensure that the strength of the bar is maintained. A parallel metric thread is rolled onto the enlarged end. A 12 mm bar is provided with an M16 thread, a 16 mm bar with an M20 thread and a 20 mm bar with an M24 thread.

Length:

Unit lengths for KSN Anchor Box are determined by Ancon for each specific application, with a maximum unit length of 600 mm.

Product Options

KSN Anchors:

KSN12M:

  • Nominal external diameter: 22 mm.
  • Metric thread: M16 x 2.0 mm.
  • Nominal head width: 46 mm.
  • Nominal head A/F: 40 mm.
  • Anchor length: 150 mm.
  • Embedment depth: 159 mm.

KSN12S:

  • Nominal external diameter: 22 mm.
  • Metric thread: M16 x 2.0 mm.
  • Nominal head width: 46 mm.
  • Nominal head A/F: 40 mm.
  • Anchor length: 115 mm.
  • Embedment depth: 124 mm.

KSN16L:

  • Nominal external diameter: 28 mm.
  • Metric thread: M20 x 2.5 mm.
  • Nominal head width: 61 mm.
  • Nominal head A/F: 53 mm.
  • Anchor length: 190 mm.
  • Embedment depth: 199 mm.

KSN16M:

  • Nominal external diameter: 28 mm.
  • Metric thread: M20 x 2.5 mm.
  • Nominal head width: 61 mm.
  • Nominal head A/F: 53 mm.
  • Anchor length: 160 mm.
  • Embedment depth: 169 mm.

KSN16S:

  • Nominal external diameter: 28 mm.
  • Metric thread: M20 x 2.5 mm.
  • Nominal head width: 61 mm.
  • Nominal head A/F: 53 mm.
  • Anchor length: 130 mm.
  • Embedment depth: 139 mm.

KSN20L:

  • Nominal external diameter: 32 mm.
  • Metric thread: M24 x 3.0 mm.
  • Nominal head width: 75 mm.
  • Nominal head A/F: 65 mm.
  • Anchor length: 230 mm.
  • Embedment depth: 239 mm.

KSN20M:

  • Nominal external diameter: 32 mm.
  • Metric thread: M24 x 3.0 mm.
  • Nominal head width: 75 mm.
  • Nominal head A/F: 65 mm.
  • Anchor length: 190 mm.
  • Embedment depth: 199 mm.

KSN20S:

  • Nominal external diameter: 32 mm.
  • Metric thread: M24 x 3.0 mm.
  • Nominal head width: 75 mm.
  • Nominal head A/F: 65 mm.
  • Anchor length: 150 mm.
  • Embedment depth: 159 mm.

Bartec Plus Continuation Bars:

Unlike re-bend continuity systems where bar lengths are restricted to the box dimensions, there is virtually no restriction on continuation bar length with KSN Anchors. This system easily accommodates the longer lap lengths now required by BS EN 1992:1-1 (Eurocode 2). Ancon KSN Anchors are designed for use with 12 mm, 16 mm and 20 mm diameter grade B500B or B500C reinforcing bar, threaded with a Bartec Plus metric thread, supplied by Ancon. No on-site bar straightening is required.

Literature
Third party certifications
  • UK CARES: TA1-B 5061
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