That’s 3.3 square feet to a bit over 1 square foot. 8 feet (96inches) by 8 inches = 768 square inches, resulting in a loading for 50,000 lbs evenly distributed of 65 pounds per square inch, so per the above document you should be safe at that loading.

How much weight will plywood hold?

A 12-by-36-inch piece of 3/4-inch fir plywood can easily support 50 pounds. However, a 12-by-36-inch piece of 1/4-inch thick plywood will not support that much weight. It will only support about 5 pounds before bending.

How much weight can a 1/2 inch plywood hold?

As you can see, a 1/2″ plywood can support up to 35 pounds per square foot. But doubling that thickness to 1″ of plywood supports up to 164 pounds per square food.

How much weight can a screw in plywood hold?

A half-inch piece of plywood has a screw pullout strength of just over 113 pounds per square foot (psf) if the screws are placed 9 inches apart. However, a three-quarter-inch piece of plywood provides the screw with a pullout strength of about 197 psf.

What is the weight of plywood?

A standard 3/4-inch full sheet of plywood weighs about 60 pounds. In this article, we’ll examine how size, thickness, and such factors as the wood type and species impact the overall weight of plywood.

How thick should plywood be to walk on?

Sizing the Plywood
No matter what the spacing is on your ceiling joists, 3/4-inch plywood should be used if you plan on walking on it. If you plan on placing the plywood around the perimeter of the opening or door and using it only to store light boxes or materials, 1/2-inch-thick plywood should suffice.

What is the strength of plywood?


Physical Properties Metric English
Tensile Strength 27.6 – 34.5 MPa 4000 – 5000 psi
Modulus of Rupture 0.0483 – 0.0689 GPa 7.00 – 10.0 ksi
Flexural Modulus 8.20 – 10.3 GPa 1190 – 1490 ksi
Compressive Strength 31.0 – 41.4 MPa 4500 – 6000 psi

How do you calculate the load bearing capacity of plywood?

Enter the thickness of the plywood, the length, and the width into the calculator to determine the total load capacity.
Plywood Load Capacity Formula.

Thickness Max Pressure (PSF)
.250″ 16
.375″ 22
.500″ 35
.750″ 79

Is OSB stronger than plywood?

Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists. However, nail-holding ability controls performance in shear wall applications.

Is plywood strong enough to sit?

Related Articles. You can build a bench from plywood but it must be sturdy. If you laminate the plywood together, it gives you all the strength you need. Plywood also works well for this because it’s dimensioned perfectly, it’s square, it won’t split and it remains stable if exposed to moisture.

Is plywood heavier than MDF?

MDF weighs more than plywood.
As it’s quite a bit denser than plywood, MDF weighs considerably more. This can be a major issue if you’ll need to lift, hold, or clamp panels in place or construct something that requires an overhead reach, such as elevated shelves.

How much does 4×8 3/4 plywood weigh?

On average, a 4′ x 8′ sheet of 3/4″ softwood plywood weighs about 61 pounds. Read on to learn more about what impacts the weight and find the weight for different varieties and thicknesses of plywood.

Is plywood heavier than pine?

Number of Plies
What is interesting to note is that birch plywood is not heavier and more durable than pine plywood just because of the differences between hardwood and softwood, but also due to the number of plies used. Of course, plywood can have differing amounts of layers.

Is half inch plywood good for floor?

The spacing of the joists governs the recommended thickness of the plywood subfloor. Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but you should use slightly thicker 3/4-inch plywood for joists spaced further apart.

Is it better to use OSB or plywood for subfloor?

OSB has a lower resale value than plywood due to its lower strength. For this reason, few homeowners prefer OSB in their homes. Apart from costs, plywood is superior in all the other areas, such as the strength of the structure. For this reason, it’s a superior material for use on the subfloor.

How much weight can a subfloor hold?

The International Residential Code, on which most local building codes are based, requires that floors in non-sleeping rooms must support a minimum live load of 40 pounds per square foot, and floors in sleeping rooms must be able to handle a live load of 30 pounds per square foot.

How do I know how much weight my floor can hold?

Multiply your living room’s square footage by 40 pounds per square foot, and you’ll have the minimum safe live load of the space. The average US living room measuring 12×18 or 216 square feet puts the minimum allowable live load of the typical living room at 8,640 pounds.

Can a floor collapse from too much weight?

Excessive Weight on a Floor
However, if load-bearing supports are not installed properly, this can cause a floor to collapse. Additionally, some floor collapses can be caused by an excessive amount of people standing or jumping in an already weak area of a floor.

What weight can a floor support?

Most residential floors are default designed for 40-50 lbs per square foot, unless more is planned for. You have 60 PSF of dead load and 7 PSF of live load assuming the booth floor spreads the live load over the whole 36 square feet.

How much weight can 2nd floor hold?

The load capacity of a second floor in a home is regulated at 40 lbs. per square foot. For bedrooms, the capacity is 30 lbs. per square foot.

Can my floor support a 150 gallon fish tank?

Conclusion. Aquariums up to 55 gallons can be placed almost anywhere without much worry at all. Many tanks larger than 55 gallons and no more than 125 gallons will be okay, if they are placed in a good structural location and your floor framing is free from significant defects.