1. YOUR BEST CONNECTIONS All parties concerns and interests combined
Technical detailing and design
Necessary drawings and specifications
Training to the personnel in charge
The right Halfen product on time to the right location
This is your daily routine:
manufacturer, Site engineers, Designers
of cause with different priorities:
see slide
but an advanced system must have an answer to all parties concern
How is it done so far?

2. Halfen Cast-in Channels

3. Fixing Solutions An integer solution for virtually any fixing problem
Stress free embeded into concrete.
An integer solution for virtually any fixing problem

4. Fixing to structures: What needs to be fixed?
For example:
Aluminium Curtain Walls
Lift rails in elevator shafts
Utilities and supporting racks
Precast concrete elements
Combined concrete and steel structure
and many, many other things

5. Fixing to structures: How is it commonly done ?
You all know:
Old scrap rebar of prestressing wire is installed in precast components -- fixing the element in an uncontrolled way
You can find this even in big and heavy components like bridge girder. As long as this is not tested is can never be a save solution
Often precasters do not apply any inserts for lifting. by doing this they are pushing the problem to the site, to the people being responsible for the installation.
Once I went into a pipe factory manufacturing huge pipes, up to 4 m diameter. The worker had to lift these vertically manufactured pipes to the turning devise to bring them into the horizontal position. After that the pipe were transferred to the storage area and later were loaded for transportation to the site. No inserts or anchor were installed. The workers were handling the big pipes of up to 20 tones and more by using fabric slings, which as they told me break after being used for a few times only.
Using untested and not approved products or tools not appropriate, means endangering men working in the factory and in the field.
I am sure nobody of you wants to be responsible of having caused bad injuries or death.
Beside this the conventional method has got its limits
Often with cast in channel
Drilling and expanded bolds
Inserted steel plates and welding

6. “Conventional” Methods are limited in:
Size and weight of components
Flexibility and Adjustability
Space and Accessibility
Safety and Quality control
Construction speed
Small and light: drainage covers or small precast piles
Compact: well embedded in concrete
long curing time: several weeks
just off the ground: limited area of movement
Today’s requirements change:

7. Advanced Fixing Solutions are required, when
Dimension and load increase
Big tolerances must be covered
Space is tight and access is difficult
Safety requirements become high
Time counts
What can we see today at the construction site?
Large components f.e. long bridge girder up to 25 m an more
Finished surface at structural components to be installed
installation at high rised buildings, 100 m off the ground
Safety requirements getting more strict

8. For Example: Fixing Curtain Walls
High-Tech curtain walls - accurate and safe fixing
Expensive material - speed is paramount
Final adjustment - flexible fixing system
Quality control of all fixing-points
Check of correct channel being inserted. Insertion according to approval. Suitable bolt being choosen, Necessary initial torque being applied.

9. For Example: Fixing Lift Guide Rails
Dynamic loads in moving elevators
Easy installation in tight conditions
Quality control of all fixing-points
Elevators obviously cause dynamic impact on the fixing. Actually only few and expansive dowels are allowed for dynamic load partition.

10. For Example: Fixing Utilities Support
Heavy loads with dynamic components
To be fixed where access is difficult
Exposed to aggressive environment
No drilling in post-tensioned components
Later checks extremely difficult
Dynamic loads in pump basis. Drainage beneath bridges. Different kinds of stainless steels available for all purposes.

11. For Example: Fixing Precast Concrete Panels
Heavy precast façade elements
Few fixing points only - high single loads
Expansive cranes - speed is important
Final adjustment - to attain an even surface, adjustment under load

12. For Example: In Civil Defence Shelters
Shock loads from explosions
Later checks extremely difficult
Long lasting solution even without maintenance
In MRT-Stations
In Community Centres
In Schools
In HDB Properties

13. The Solution HALFEN HTA Cast-in Channel:
C-Channel with anchor on its back
Unique profile matching with T-head bolts
Hot dip galvanised or stainless steel quality
HTA-A with welded I anchor
HTA-B with swaged bolt anchor
HALFEN T-head bolts

14. HALFEN HTA Cast-in Channel: Installation
1. Fix the HALFEN HTA channel to the formwork
Bolt is correctly inserted (90° turn) when the notch at the end is in an oblique position to the channel.
2. Pour the concrete
3. Compact properly
4. Clear Polystyrene filler
5. Fix your application with HALFEN HS T-bolt and nuts

15. Channel and Bolt types 27 kN 22 kN 10 kN 6 kN 27 kN 10 kN 6 kN 4.5 kN
HTA 72/48
HTA 52/34
HTA 50/30
HTA 40/22
27 kN
22 kN
10 kN
6 kN
Hot rolled channels with dynamic load partition. Cold formed channels.
HTA 72/49
HTA 49/30
HTA 40/25
HTA 38/17
HTA 28/15
27 kN
10 kN
6 kN
4.5 kN
3 kN

16. Design Considerations
Please imagine that a VW Golf car weights approx. 1 ton, i.e. 10 kN! So you can fix on one load point almost 3 cars.