HAC_Technical-Guide

ManualsBrandsHilti ManualsCast-in Anchor ChannelsHAC Front-of-slab rebar channel

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Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019

1. Anchor

Channel Systems

2. HAC

Portfolio

3. HAC

Applications

4. Design

Introduction

5. Base material 6. Loading

7. Anchor Channel

Design Code

8. Reinforcing

Bar Anchorage

9. Special Anchor

Channel Design

10. Design

Software

11. Best

Practices

12. Instructions

for Use

13. Field Fixes

14. Design

Example

9.1 Overview of Hilti Anchor Channel Systems Design

9.2 HAC and HAC-T Design 9.3 HAC CRFoS U Design 9.4 & 9.5 Post Tensioned Slabs 9.6 HAC EDGE Design

9.3.5 — HAC CRFOS U DESIGN: COMPOSITE SLABS

9.3.6 — HAC CRFOS U DESIGN: DESIGN OF ANCHOR CHANNEL FOR

OUTSIDE CORNER OF A CURB OR OUTSIDE CORNER WITH

COLUMN CONFLICT

The following failure modes needs to be modified in order to

take account the effect of metal deck:

Pullout strength in tension

For FOS anchor channel design on a metal deck, the cover on

the rebar where the rebar goes on top of metal deck should be

measured from center of rebar to the metal deck. The c

value

is taken as minimum value of x

and x

in the development

length equation. The pullout strength gets reduced due to the

reduced cover if the ratio c

is less than 2.5. Please refer

to rebar theory chapter 8 and section 9.2.3 chapters for more

information on this failure mode.

setb

cbprovdd

setb

fdl

yyy

lps

yyy

lps

.5.2,min.'..

....

.5.2,min.'..

.. . l )(f

provd,dy

Concrete breakout strength in shear

The dimension y” effects concrete breakout strength in

perpendicular shear. This will change the factor Ψ

h,V

The dimension h in the formula below for the Ψ

h,V

factor should

be taken as h as shown in Figure 9.3.5.1.

Please refer to anchor channel theory for more information on

concrete breakout in shear.

cha1Vcr,

2h2ch +=

1.0

Vcr,

Vh,

Figure 9.3.5.1 — HAC CRFOS U — FOS — Composite Slabs.

Please contact Hilti at US+CA.HAC@Hilti.com for additional information.

9.4 — HAC AND HAC-T DESIGN: POST TENSIONED SLABS

9.5 — HAC CRFOS U DESIGN: POST TENSIONED SLABS

9.3.7 — HAC CRFOS U DESIGN: DESIGN OF FACE OF SLAB ANCHOR

CHANNEL WITH COLUMN CONFLICT AT THE CORNER

See best practices, section 11.5.3

Figure 9.3.6.1 — HAC CRFOS U — FOS — Column Conflict at Corner.

When there is a column conflict at the corner, the anchor

channel is analyzed using a height of the base material as x” .

This dimension x” effects concrete breakout strength in

perpendicular shear Ψ

h,V