Photo: 7inchs

What is best to put under a water tank?

Concrete slab This is the best base for any water tank. We would recommend 100mm 20MPA concrete slab with F72 reinforcing mesh. The slab should be 100mm larger than the water tank all around. Ensure the slab has been cured for 7 – 10 days ready for our Designer Tank team to carry it into position.

designertanks.com.au - Base Preparation - Designer Tanks

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Base Preparation

Quite often this aspect of your rainwater harvesting system is underestimated. Please remember that every litre of water is one kilogram of weight. So a 3000 litre water tank is 3 tonnes. That equivalent to two normal cars!! This is important when considering the location of your tank and the base you may choose to sit it on. For example, it is certainly not recommended to put a tank of any size on a veranda, or an area which is high in uncompacted fill and will subside.

Our tanks are suitable to be placed on the following bases

Concrete slab

This is the best base for any water tank. We would recommend 100mm 20MPA concrete slab with F72 reinforcing mesh. The slab should be 100mm larger than the water tank all around. Ensure the slab has been cured for 7 – 10 days ready for our Designer Tank team to carry it into position. Here is a good step by step video by Mitre 10 on how to lay a small water tank concrete slab https://www.youtube.com/watch?v=-NwXSkO8sBA

Paver base

This is a good alternative if its difficult to get concrete to the area you need and can also be faster. You can purchase concrete pavers in various sizes so once you have worked out your tank size, configure the number of pavers and size to suit. You will need to remove any vegetation first, then lay and level 80mm of sand and cement mix (you can purchase these in premixed 20kg bags) and then place your pavers tightly together. Finally, water the pavers and butter up the edges. The moisture in the ground and from the hosing will set the cement and form a strong base

Crusher dust / Sand base

This can be an easy option but it does have some risks. The sand or crusher dust must be 100mm think and well contained, such as in a treated pine surround or besser blocks. If the sand can escape from around the tank the tank base will fail. Also, you will need to keep a close eye on your tank base to ensure that there isn't any erosion of the base due to water run off.

Tank stand

A tank stand can be the most costly base solution for your tank. Tank stand must be well engineered to handle the large loads of water and significant footing is required due to the point loads, often more so than a concrete slab. Designer Tanks have a range of smaller tank stands, but for larger solutions you would need to consult an registered engineer. Finally, some people think they require a stand to be able to get a bucket under the outlet and use gravity…but in reality its cheaper to go for a taller tank and fix a extra tap at knee height.

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Which state has most crime?

What crime data does the FBI publish? Location Property Crime Rate (2020) Violent Crime Rate (2020) United States 1,958.2 398.5 Alabama 2,136.8 453.6 Alaska 2,260.5 837.8 Arizona 2,227.7 484.8 48 more rows •

usafacts.org - Which states have the least and most crime? - USAFacts

For decades, the crime rate in the US has trended downward, and the latest data is no different. In 2020, the overall crime rate for the nation was 6.2% lower than in 2019. However, violent crime rose 4.7% in 2020. And while crime is down over time nationally, at the state level, the reality can be different.

How do current crime levels compare to the past?

Crime in 2020 was 60% lower than in 1980. The crime rate began consistently declining in the early 1990s and fell every year between 2001 and 2020. Both property and violent crimes reflect this long-term trend of decreasing crime. Property crime is down 63% since 1980, and violent crime is down 33%. Property crime includes burglary, larceny-theft, motor vehicle theft, and arson , with larceny making up about 80% of property crimes. Violent crime includes homicide, rape, robbery, and aggravated assaults , with aggravated assaults making up 66% of violent crimes. In 2020, the lower overall crime rate was driven by fewer property crimes, which were down 8.1% from 2019. Violent crime, on the other hand, was 4.7% higher over the same time period. This increase was primarily due to more aggravated assaults, but the homicide rate also increased by about 25%.

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