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We run seminars, training courses and webinars online for engineers and architects to talk though the latest innovations and state-of-the-art research.

So if you’d like to find out more about our post-installation rebar design and technology, just contact your local Hilti authorised distributor, and we’d be happy to help.

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How Cracked concrete Influence Anchor Design

The Structural Engineering community specifies Post-installed anchors with either mechanical or adhesive system in many construction applications. The condition of base material will play a key role in selecting the type of anchor to be used.

Concrete base material is classified as either cracked or un-cracked. It is not possible for a reinforced concrete structure to be built without having cracks under working conditions, provided that they do not exceed a certain width limit, however it is not always necessary to regard cracks as defects in a structure. Concrete can often crack due to age, temperature variations or loads. Research and tests showed that cracks will run through these weak points where anchor exists and will influence anchor behavior and performance therefore only specific anchors are qualified to work in cracked concrete.

Accordingly, before designing anchor systems for concrete, it’s always important to consider the condition of the concrete you’re working with.

The webinar focused on & covered the following topics:

• Introduction to Cracked Concrete
• Post Installed anchor behavior with cracked concrete
• Why Cracked Concrete matters for Fasteners
• How anchors are assessed and qualified for cracked concrete
• When to consider concrete as cracked concrete and when not to.
• Explanation on how cracked concrete affect the design


Design Principles According to Eurocode2 Provisions

Reinforcement anchorages or splices that are fixed into an existing concrete structure by injection adhesive in drilled holes are defined as “Post-Installed rebar connections”.

Post Installed rebar connections are commonly used in a wide range of applications, which vary from new construction projects, to structure upgrades and infrastructure requalification.

So, when you need to extend, join or strengthen existing concrete walls, slabs, columns or beams, then adhesive mortars for post-installed rebar can help, however, post installed rebar must be designed as carefully as the entire structure.

While the European technical approvals prove that in standard load situations and applications, post installed rebars behave like cast-in bars, a number of differences needs to be considered in special design situations such as fire, or load cases where hooks or bends would be required for cast in anchorages such as the case for rigid connections.

The webinar focused on & addressed the following topics:

• Introduction to post installed rebar
• Post-installed rebar applications and behaviour
• Approvals and qualification’s Criteria for adhesives
• PI rebar design: Eurocode 2 provisions


Introduction To Anchor Design Software

Concrete anchors are widely used in fastening both structural and non-structural elements.

Many structural engineers specify post-installed anchors where they design different fastening points with either mechanical or adhesive anchor system in many construction applications.These elements fastened are somehow directly or indirectly linked to the safety of human being or different economic investments.

There are different factors which could influence anchor design such as installation parameters, anchor layout, loading conditions and other special requirements related to seismic or fire design etc. and it is the responsibility of the structural engineer to ensure that anchor fastener shall sustain all load actions during execution and it will remain fit for use under different environmental and loading conditions. So, taking attention to these parameters while designing fastening points plays a key role in defining the design as a safe anchor design.

Furthermore, Construction industry nowadays became more dynamic and challenging, and taking that into consideration, safety and productivity is now crucial for many construction and design organizations. Considering all above-mentioned factors while designing post installed anchor fastening points will make hand calculation challenging especially when you need to re-check the design by changing one or more parameter.

Our technical webinar will introduce fundamentals of anchor design and different factors which influence anchor fastening points design in concrete as well as presenting a live example on how anchor design software brings productivity and safety to your design.

The webinar will focus and address the following topics:

• Proper design for post installed anchors
• Dimensions to be checked while designing for anchors
• Anchor design euro code framework
• Specialty about concrete anchors versus other fastening system
• Anchor design failure modes
• Safety factor concept for anchor design
• Introduction to anchor design software