Tips For Choosing Screws And Anchors For Concrete Construction
When working a concrete construction project, you need to be sure that you have the proper connective pieces. You will need to consider attributes related to the concrete as well as some tips to help you buy the right connective pieces for the job. Take advantage of these tips as you buy the fastening pieces to complete your concrete project.
Assessing the concrete
Prior to purchasing any screws or anchors, you will need to consider these attributes about your concrete:
- Age - Never drill any connective pieces into concrete that is younger than 28 days old. Conversely, concrete that is very old will be very difficult to drill into. Because concrete age varies, you will need to speak with a connective fastener sales person who can help you match the proper fastener with the age of your concrete.
- Compression strength - You must also purchase the fastener based upon the compression strength of the concrete you will be drilling into. Typical concrete has compression strength that is less than 7000 psi, while heavy duty strength concrete will range between 7000 psi and 14,500 psi.
- Thickness - The thickness of the concrete will determine how deep your connective piece should be embedded.
Considering anchor loads
There are a few load measurements you should be mindful of when purchasing the proper fastener:
- Tensile load - This measurement refers to the force that must be applied to pull anchor pieces directly from concrete.
- Shear load - This measurement refers to how much downward gravity is applied to the anchor.
- Impact load - This measurement explains the force applied when the concrete experiences sudden weight increases.
Buying the right screws
To properly match your anchors with the right screws, use these tips:
- Be sure to purchase plenty of screws that vary in length. Even with the best concrete assessments, you can make the mistake of purchasing the wrong screw size. By purchasing varying lengths, you will help yourself avoid this mistake. When you need more strength, purchase longer screws, including those that reach lengths of 1 3/4 inches.
- Use hex head screws whenever possible. These screws are much easier to control and drive into the concrete. If you are not worried about appearance, always choose hex head over any other type.
- Use the drill efficiently. Always hold the drill with a steady hand and drive it at slow to medium speeds and pressures.
Follow this advice in order to get the most out of your concrete drilling and fastening. For professional help, contact a company like Northland Fastening Systems.