Question about Calculated Industries ConcreteCalc Pro 4225 Calculator

Salt is evil when it omes to unsealed concrete. Hose down the area and remove any remaining salt. Then go to a cement block/brick yard and speak with the clerk about your problem. There are several very excellent concrete patches that will do the repair. Finally, I would seal or reseal the entire concrete pad.

please mark my answer as a fixya!

Posted on Mar 11, 2009

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Posted on Jan 02, 2017

Lets assume that our concrete bag has a volume of '**x**' and is 2/3rd the size of a **1 foot cube.**

that means its volume is**2/3 cubic foots**.

thus we conclude**x = 2/3 CF** (cubic foots)

Lets assume the hole has a volume of**y** and is equal to

**63x59x4 CF**

thus** y = 63x59x4 CF**

Divide to get the result

**y/x = (63x59x4)/(2/3)**

there is a rule in mathematics that makes the above convert into

**y/x = (63x59x4x3)/2**

yes the**lowermost 3** jumps up only because it was coupled with the 2 below the divide sign

see the brackets

only in such special conditions the last digit jumps up.

Now a simple calculator will find our answer

Assume to calculate separately (seems easy to me this way)

**63x59x4x3 = 44604**

**y/x = 44604/2**

thus**y/x = 22302 units.**

**That means to fill up a hole of dimensions 63x59x4 CF it will take upto 22,302 concrete bags .**

that means its volume is

thus we conclude

Lets assume the hole has a volume of

Divide to get the result

there is a rule in mathematics that makes the above convert into

yes the

see the brackets

only in such special conditions the last digit jumps up.

Now a simple calculator will find our answer

Assume to calculate separately (seems easy to me this way)

thus

Sep 28, 2016 | Office Equipment & Supplies

Hello Albert, 11.88

Mar 20, 2015 | Office Equipment & Supplies

These are not the same, so cannot be directly converted.

Pounds per sq ft is a measure of pressure, while lbs / cu ft is a measure of density, weight per unit volume.

I think maybe what you are doing here is converting the weight of concrete in a 1" slab, where a sq ft would contain

1 x 1 x 1/12 = .0833 cu ft

The figure of 150 lb/ cu ft is correct for the average density of concrete, so the above slab would have

1/12 x 150 = 12.5 lbs/sq ft at 1" thickness

BTW that is a thin slab of concrete, insufficient even for a light-duty pathway. If you are referring to a screed for tiling or similar, that is cement.

Pounds per sq ft is a measure of pressure, while lbs / cu ft is a measure of density, weight per unit volume.

I think maybe what you are doing here is converting the weight of concrete in a 1" slab, where a sq ft would contain

1 x 1 x 1/12 = .0833 cu ft

The figure of 150 lb/ cu ft is correct for the average density of concrete, so the above slab would have

1/12 x 150 = 12.5 lbs/sq ft at 1" thickness

BTW that is a thin slab of concrete, insufficient even for a light-duty pathway. If you are referring to a screed for tiling or similar, that is cement.

Mar 01, 2015 | Office Equipment & Supplies

Do not blame your calculator. Get a plausible average mass density for the concrete (dry or wet) and multiply the density by the volume.

Mar 25, 2014 | Calculated Industries Office Equipment &...

100 (one hundred).

If this is homework, be sure to show your work.

If this is homework, be sure to show your work.

Jan 08, 2014 | Office Equipment & Supplies

IR40T is the Korectype brand of ink roller. You should be able to get this at any office supply store. I don't know where you live but if you are close to Staples they will carry it ot another compatible brand. It is not actually a ribbon but a roller on a piece of plastic. I hope this helps you.

Mar 17, 2011 | Casio FR-2650A Calculator

I really had to "yank" mine apart. I thought I was going to break it but didn't.

Good luck.

Good luck.

May 19, 2009 | Texas Instruments TI-30XA Calculator

I had the same problem and fixed it using a small woodscrew and washer to hold the battery cover in place. The screw is 10 milimetre in length with a 5 milimetre head which I have screwed into the calculator case in the gap where the missing edge has snapped off. I inserted the batteries and held the cover in place whilst I tightened the screw and washer so they overlapped the battery cover but held it in place.

To create the hole in the case, I used a very sharp nail as a nail punch, held the HP19BII in between my knees (to allow movement in case I hit it too hard) and tapped the nail into the plastic until it was fully pierced. I then wriggled the nail around to make the hole big enough for the screw to enter. NOTE - don't use a long screw as it might reach too far inside and damage the electronics.

Works a treat for me!

To create the hole in the case, I used a very sharp nail as a nail punch, held the HP19BII in between my knees (to allow movement in case I hit it too hard) and tapped the nail into the plastic until it was fully pierced. I then wriggled the nail around to make the hole big enough for the screw to enter. NOTE - don't use a long screw as it might reach too far inside and damage the electronics.

Works a treat for me!

Jul 25, 2008 | HP 19BII Calculator

The TI-86 uses a very small, very thin ribbon cable to connect the display board to the LCD. The cable is about 2.5 " wide and about 4" long, and is only slightly thicker than a piece of paper but has about 40+ leads buried inside. Over time the leads will break at the folds (there are at least two folds in this cable to fit it down inside the case). There is no cheap solution to fix this problem. You might have some "Mr. Fix-it" try to fix it, but he will tell you to throw it away after he renders it completely inoperable. The calculator uses two Torx bit screws at the bottom of the case (T-6 size) so you will have to get the correct screwdriver to open the case. Save your money, sanity and time and use it till you can't stand the missing lines and throw it out. Even the data cable looks like it is glued down so if it lifts off after being cooked or frozen a couple of dozen times in the back of your car you can't fix this.

Mar 28, 2008 | Texas Instruments TI-86 Calculator

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