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Specifications for suitable chemical anchors to allow for use of 4, 3/8 in x 24 screws to mount a removable steel maintenance panel weighing about 40 lbs

Posted by Frank Spitzerabout 1 year ago
Specifications for suitable chemical anchors to allow for use of 4, 3/8 in x 24 screws to mount a removable steel maintenance panel weighing about 40 lbs

The diagram which is uploaded shows the intended application of the cover plate attachment to the concrete wall. The length of the screw can of course be adjusted but we know that there will be significant rebar to be avoided. Please advise if you have a suitable Stainless steel chemical anchor and indicate the length that you would recommend. The plate needs to be removable for maintenance purposes. There will be anti-icing products in the exposure, e.g. salt and potassium acetate, and some vibration. If chemical anchors are not recommended, please suggest an alternative.

Attached drawing shows the anticipated installation of the "Stainless Steel Protection Plate" in 2 views. We are expecting that 3/8 x 24 screws would be sufficient, but welcome your recommendations if required to increase the screw size. The plate may weigh about 70 lbs. The issue of the recommended embedment is also to be decided. Thank you.

Specification,model

1 Reply
Posted by Nathan Chungabout 1 year ago
Hilti Verified

Hello Frank,

Thank you for reaching out.

When it comes to anchoring in applications needing chemical resistiveness, the option for removability, and potential vibration, you are on the right track with exploring our chemical anchors.

Although our team cannot offer recommendations on design ex. Embedment depths, we recommend exploring our published capacities of either the HIT-HY 200 V3 starting on page 34 of the Anchor fastening technical guide or the HIT-RE 500 V3 starting on page 106 as these are some of our most common chemical anchors.

For information on their chemical resistance, you can find our data at the end of each anchor’s chapter, specifically page 104 for the HIT-HY 200 V3 and page 173 for the HIT-RE 500 V3.

We have seen engineers use the HIS-RN 316 SS internally threaded sleeve along with the threaded rods, for applications where the baseplate needed to be removed occasionally. Although the threaded sleeve is not to be removed, the threaded rod can be removed and replaced if the engineer after inspection finds it to be appropriate to do so.

You can find our published capacities for the HIS-RN/HIS-N starting on page 87 for the HIT-HY 200 V3, and starting on page 158 for the HIT-RE 500 V3.

Similarly, we also offer various threaded rods in stainless steel which you can explore all our offerings in the selector chart of elements and rods.

Ultimately, it will be left to the engineer of record to determine a suitable solution, however I hope the information I provided finds you well.

Chemical Anchor,Removable,HIS-RN