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I want to build a rebar inforced cement slab 6 ft x 6 ft capable of supporting 4000 lbs. How deep do I have to dig to get below frost level in salem county NJ

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6ya6ya
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Posted on Jan 02, 2017

joecoolvette
  • 5660 Answers

SOURCE: for tightening head bolts on my car it says to

Because, by the time you twist that bolt to let's say, 65ft.lbs, it could snap.

The manufacturer of that bolt knows that if the bolt is torqued, (Stretched) to a certain torque value, and is turned a certain amount of degrees, the proper torque value will be reached, and still stay within the guidelines of the tensile strength of the bolt.

Torque is set to Bolt Stretch. How far the bolt will stretch in a given torque value, and not exceed it's tensile strength. The threads are stretched over to one side a little also, and this causes the bolt to be locked into position. They can only be 'tweaked' over to one side so many times, then they will fail.

Also the bolts have a certain tensile strength, and can only be stretched so far, and So may times.
MANY, manufacturers plainly state to not reuse a head bolt of this nature. Reasoning, is that the bolt has been stretched, and stretching it again may cause failure of the bolt.

Plus, every time the engine reaches the operating temperature, it stretches the bolts, then the bolts contract once the engine has cooled off.
[Everything you always didn't want to know, huh?]

Posted on Aug 18, 2009

  • 3 Answers

SOURCE: Water freezes on slab & Builds Up will not fall on Wires

We had this problem. You need to clean the freezing try using a green scouring pad and the solution they recommend in the user manual. You need to scrub the tray with forward backward motions until slippery clean. All surfaces need to be clean and free of plack. it will work like new if you do this. Need to remove the cutting try first.

Posted on Aug 22, 2009

  • 415 Answers

SOURCE: My lower level freezer has frost build up. It is

the unit is experiencing a defrost issue one of 3 things bi-metal thermostat clipped to the evap.... defrost heater element is now open or very little resistance reading or defrost timer unit you can get fix remove the items in freezer and remove the back panel with hairdryer in hand thaw the frost and unit will oper normal for a time

Posted on Aug 26, 2009

co7196
  • 3433 Answers

SOURCE: water pump keeps on running my mastercraft jet

yOU NEED A FLOAT SWItch to have the pump work unattended. I have two new switches and no use for them, Where are you?

Posted on May 26, 2010

  • 1 Answer

SOURCE: my shallow well pump will not pump to 40 lbs

Installed new shallow well pump still only can get to 30 lbs pressure. when i turn pump off pressure drops to 20 lbs right away and stays there

Posted on May 27, 2011

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3 Answers

How many cubic meters of concrete will it take to pour a garage fool 336 sq feet 6 inches deep


Figure 1 90 lb. bag per square ft., 6" deep.
Don't forget sand to grade and rebar to reinforce.
You probably won't find enough guys to mix all that concrete, so you'd really be better off hiring a concrete truck.
Tip: It's best to over estimate a little so you won't be caught short.

Mar 01, 2015 | Building Materials

1 Answer

Convert 30pounds per sq.foot to pounds per cubic foot(concrete=150#/cubic foot at 1in. thick conc. slab).


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.

Mar 01, 2015 | Office Equipment & Supplies

1 Answer

Yards of concrete do I need to pour a step 5'x 20" x 48"


If you poured these dimensions as a solid concrete stairs, it comes out to 1 and 1/4 yds. (note that anytime you order concrete to always figure in at least 10-15% more). So 1 and 1/2 yds "should" be adequate,, and ordering 2 yds would be 100% worry-free.

But most steps/staircases are not poured "solid". Usually you have solid walls (approx 8" to 12" thick), with a compacted mound in the main section of the formed area which still would allow approx 6" minimum thickness below the treads/risers at their inside edge.

The top platform slab should also be 6" thickness.



In other words, pouring them completely solid is overkill and not necessary. More weight = more prone to settle without proper foundation or wingwalls.

It\'s important to have a solid footing/foundation for the steps, that extends below the grade line (depth dependent on what area of the country you\'re in and the typical "frost line").

It may also be advisable to use short rebar "dowels" drilled into the existing wall the steps will be against, to prevent settling or shifting.

More specifics and info is needed for a more accurate answer.

Oct 16, 2014 | Building Materials

1 Answer

How do I install spalding basketball hoop in the ground with concrete and how deep do I dig?


Dig below frost line, depends upon where you live, but at least two feet deep. I would make the hole about a foot wide. Pole diameter 3-4 inches in diameter.

Aug 10, 2014 | Spalding Sport & Outdoor - Others

1 Answer

Build a pizza oven in the back yard


Hi.
All you need is bricks and cement.
Use perforated bricks or regular 65mm bricks for the support. A light oven may be built on an U shaped support (you will need to make some structural considerations about the weight). Moreover the U shaped support on top requires an armed concrete slab adequate to support the chamber. If you are not sure about structural performance, build a solid support block of bricks.
Make sure that the support is adequate for the weight of the heavy chamber. If the oven is big, then lay basic foundations or build the oven straight on the ground.
For the chamber you must use refractory bricks (fire bricks). You have different choices of design. A common shaped that do not require armed concrete parts is the igloo style chamber. Leave space for the chimney on top of the chamber.

Mar 24, 2013 | Ovens

3 Answers

What are the most important things to consider when building a greenhouse?


I would say the two most important issues are ventilation and heating. These are both important for the health of the plant. Still air encourages pathogens and discourages photosynthesis. Heating is necessary to keep the temperature at the plant's optimal level.

Jan 29, 2013 | Garden

2 Answers

I am going to build a timber playhouse and need to build a level foundation on top of earth, Could you please let me know the correct way to lay the slabs to ensure that they dont sink when the ground...


Not sure what part of the country you are in, but if the ground freezes in winter the ground will move. The best answer is to excavate the organic material (dirt) and backfill with gravel topped off with a layer of sand to easily work the slab or pavers.

Mar 14, 2011 | Garden

1 Answer

What do i need to torque ford 4000 cyl head bolts down to


my ford 3600 head bolt torque settings are a 3 step tensioning sequence. 90 ft lbs then 100 ft lbs then 110 ft lbs final torque value.

Mar 22, 2010 | RTO Ford Tractor 2000 3000 4000 5000 Water...

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