Determine the anchoring force required to hold plug
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However, they are two different materials with different compression strengths and reasons for being used. Often, the terms cement and concrete are used interchangeably. Anchor Dia.Ĭhoosing the Right Anchor Bolt for Cement or Concrete Below is a table of anchor bolt diameters and the fixtures holes that they can fit into. This is because the working end of the anchor bolt will not fit through the hole, so you will need to size down to ensure that the entire bolt is able to fit through the opening of the fixture hole. If this is the case, it is essential to know that the diameter of fasteners will not match the holes of the fixture. The hole in the fixture may determine the gap that needs to be drilled in the concrete.
DETERMINE THE ANCHORING FORCE REQUIRED TO HOLD PLUG PLUS
If it is a female fastened being used, the formula used to determine the length of the fastener is done by adding the number of threads of the anchor, plus the thickness of the material being fastened, plus the thickness of any washers that may be used. The simple formula used to determine the length of the male fastener is done by adding the thickness of the material being fastened plus the minimum depth of embedment for the diameter of the anchor bolt, plus the thickness fo the washer and nut. However, the two most important aspects of the job to consider are the size of the hole for the fixture fasteners and the length of the bolt. There are many considerations to make when deciding on the size and type of anchor bolt that you will use to fasten something to the concrete of a structure. This means that many of them are much more reliable than the rating indicated by the producer of the anchor bolt. They come in two main categories, which are either in the shape of a J or an L.Īll allowable stress ratings for these bolts are only 20% of the average of 5 tests done on the specimens.
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These types of anchor bolts are used when the aesthetic quality of the fixture is needed and when you don’t want anchor bolts sticking out at different lengths from the installation, which can be unsightly.īent-bar anchor bolts are threaded steel-rods with hooks on the end that is embedded in the masonry. Headed anchor bolts are also appropriate for giving a uniformed look to a project. Plate anchors are when a metal plate is welded to each side of the bolt, and these are also considered headed anchor bolts. There are a few different head types for the headed anchor bolt, including the square-head and hex-head threaded bolts. How the two provide stability for the structure is important for understanding which anchor bolt you should use on your construction project. Types of Anchor BoltsĪnchor bolts can be divided into two main categories: bent-bar anchors and headed anchor bolts. This guide will help you to ask the right questions about the base material and the non-structural material you are anchoring into the base material so that you can do a thorough job. Some anchors are made for newer concrete, some for cement, while others are made to hold heavy non-structural loads to the concrete.Ĭhoosing the right anchor bolt should start with understanding the base material and the structural or non-structural material that you will be anchoring to the base material.
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However, there are many things to consider when choosing the right anchor for the job.īefore starting your anchoring job, you’ll need to know more about the base material that you will be drilling into. When anchoring structural and non-structural elements to concrete on a construction job, you need anchor bolts. That’s why it is essential to select the right bolts. When you connect something to concrete, it should hold a lifetime.