When a deck is built to code, the code only requires that the deck can hold a minimum of 50 pounds per square foot. It truly is a system - not unlike a chain - where the weakest link will lead to the failure of the deck. I can now safely assume that my deck can hold much more than 50 pounds per square foot, as indicated by the deck span chart. 1 Dense No. But you need to add up the loads based on values that go with your allowable stress. Length. However, snow load does not account for homes that shed snow off their roof onto their deck. The International Residential Building Code (IRC) and the International Building Code (IBC) act as guidelines for national and state building codes in whole or in part. Then finish up with the guest list. Especially when using a hand tamper in each hole before setting the deck block. how much weight can a 8x8 post hold. A healthy diet consisting of vegetables, fruits, lean proteins, and whole grains can provide the vitamins, minerals, and other nutrients needed for urinary system function. The type of wood, the post length, and how wet or dry the location impact the load rating of posts and should also be taken into account. 44 deck posts commonly fasten to a metal bracket set in a concrete footing, pier or deck block at or above ground level, and extend upward to attach to and support a beam. What Is The Difference Between Capped And Uncapped Composite Decking? Use a screwdriver to remove the screws that hold the balance system in place. 16' x 8' x 8' (LWH) Holds 3-4 rooms of furniture and boxes. For Explaining the minute details for supporting a deck. WebIf your deck is built to code, then it is designed to hold a minimum of 50 pounds per square foot, of which of that total is the live load. And a 10-foot-long 26 pressure treated board will A healthy diet consisting of vegetables, fruits, lean proteins, and whole grains can provide the vitamins, minerals, and other nutrients needed for urinary system function. It folds for easy, compact storage. A 44 post was only rated for a 2-ply or 3-inch beam; however, the 2018 IRC recognized the use of post caps and brackets that fully support a 4-inch or 3-ply beam. A span options calculator allows selection of multiple species and grades for comparison purposes. Home > Building a Deck > Deck Load Capacity. You are looking at a pretty massive beam to carry any 20' span. 
The railing or guard posts must be nominally a minimum of 44 and fastened perpendicular to the rim joist with (2) 1/2 through-bolts and washers. marks the separation between supported load areas as you move outwards Of post and the center post is 3.5. A 66 installed vertically bearing on the ground has little value. Therefore, for a 2x8x10, First, you divide the tributary load of 1500 the weight-bearing capacity of the default soil type used to determine building codes. All four corners and everything in between need to be supported. from the house. A larger deck with 16 (4.8m) long joists will require a larger footing or more. Shorter post heights for 4x4s are more desirable than long posts and will support a greater tributary area. Therefore the midpoint between the joist The large footprint, significantly increasing how much weight the deck can hold. Your hand sinks into a pillow but is held by a rock. However, the industry and code acknowledge the difference and rate the post accordingly 44 sounds better too. The other 80% or 40 lbs is the weight you can have on the deck, people, furniture, dogs, etc. If that floating deck is only supported by four plastic straws sitting on leaves, the deck will collapse. If you do a good job bonding the two members together, your double 66 can support These standards are borrowed denominator. WebAs per standards published in 2003 by ASTM, an international building standards non-profit, all concrete blocks must support at least 1,700 pounds of weight per square inch (PSI). 4,200 lbs. It also is not attached to a house, so it has two beams 6 apart, both with a 2 overhang. Run 2x6 or 2x8 on edge like a header to join your legs. discussion quickly leads to the overall strength of the framed Then check out this footing load table, which can tell you exactly how big your footings need to be based on the size of the post, the span of the beam, and the length of your joists. Before you calculate how much weight your deck can hold, you first need to understand how much weight per square foot it can hold. add another support post to not overload the soil. Calculated as 20% being dead weight, the mass of the deck itself. So, how much weight can drywall hold? Soil type, footing type, lumber size, and hardware used all factor into how strong your deck is and how much weight it can hold. end post is 1.5 from the end of the beam. Luckily, we now know how to calculate those loads since we did it a few paragraphs above. The spacing of posts is determined by the tributary area of the deck being supported and limited by joist span spacing, and dimensions, and the beam dimensions. So, whether the post is 1-foot, 8-feet, or 14-feet high, most builders and DIYers choose the 66 as a more solid and code-compliant support post. Therefore, a deck of 120 square feet multiplied by 50 shows that your deck can hold 6000 pounds, including the structure. However, there are Code requirements that must be adhered to for attaching a beam to a support post. We have done quite a bit of work using sawn material, and depending on the location it can be difficult to impossible to find anyone willing to grade your material. 3.5 feet from center to center. However, one rule of thumb to keep in mind while answering the question is that the answer commonly is that if a deck is properly designed, its built to hold 50 lbs. Now keep in mind that the deck is meant to sustain that load over its entirety not in a concentrated area. Good choice! Additionally, a 66 has greater strength than a 44 of equal length. However, on average, a deck can hold about 100 pounds per square foot. 200 lbs of load. From contributor A: A 6 x 8 will span 12' for flooring. How much weight can a 66 post hold horizontally? Divide that distance in half. If only nails were used, without hardware of any type, then you might want to think twice before placing an 8000-pound hot tub on your deck. It will undoubtedly sag over time. Lets say that distance is 14. Parallel-to-grain values listed. The Tributary Area is determined by the joist span between supports and beam span between posts. Table R507.5 identifies the allowable deck beam spans based on different wood species and deck joist spans less than or equal to 6-feet through 18-feet. Paint the cut ends with waterproof sealer and then cover the post top end grain with self-adhesive water-proof tape to further reduce the risk of rot too. Hire an engineer. WebA 28 will support a dead load of 20psf and a live load of 40psf resulting in a total load of 60psf. As shown above, during excavation, make a depth gauge to ensure a footing with uniform thickness and a level bottom. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking. The post must rest on a 10-inch square or 12-inch diameter footing at least 6-inches thick. 1800 psf.But let us use a round footing because we bought some Best Answer. Calculating a tributary load is fairly simple if you have a standard rectangular deck attached to your house. The type of lumber used is also critical in determining how much weight your deck can hold. The standard 8 feet 24 stud for framing work should withstand around 1000 lbs. 
Well have to install another footing beneath the beam. The rack weighs 8.2 pounds, has soft-grip handles, and locking pins to keep the rack in place. To properly support the deck, the support and load must be spread out. Add heavy items such as hot tubs and the load the deck posts must carry can easily climb to 100 psf. So with a So, youve done your research into different types of decking materials and have decided that composite decking is the right choice for your home. The Deck Support Post Spacing table provides the post spacing based on joist span and beam dimensions. This is for soils that are a mix of loam, silt, and clay, which also happens to be one of the weaker types of soil. Don't trust me or a random table on the internet; make our own calculations from tables in the building code or other trusted sources and consider having them checked by an engineer. Share. Therefore the first midpoint is 4 from the house and is probably wise, youll notice that North Carolina, for instance, only has an average snow load of 15 pounds per square foot. From contributor J: Live-load or snow-load are other factors to consider, as are deck size and use. The racks dimensions are 23 x 11 x 3.7. Our if you assume a conservative 1400psi bending stress. So, as the load area increases, the post height decreases. It may cost you, but youll know for sure the limitations of your deck and the steps for rectifying any issues. It will be a metal or plastic piece with a cord or spring attached. Load Calculation for Each Tributary AreaA= 40sqft x 50psf or 2000 lbsB= 19.5sqft x 50 psf or 975 lbsC= 21 sqft x 50 psf or 1050 lbsD= 19.5sqft x 50 psf or 975 lbs. capacity. its surface area by using the formula for area of a circle as r. With 28 joist 16 (400mm) centre spanning over the dropped beams supporting the decking and everyone on the deck. The dead load is commonly considered to be 10psf and the live load 40psf, resulting in the design load of 50 psf. Deck support posts are normally placed near the ends of beams and spaced along the length of the beam. The smaller rock will require more work to compact. The maximum allowable 44 deck support post height under the 2015 IRC is 8-feet. from the house. Pretty impressive. The other half is supported by the footings supporting the beam. E 3 Construction Ltd is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. So, for posts 3-feet and shorter, its a matter of preference, above 3-feet use 66. However, the IRC and maximum beam and joists spans limit the Tributary Area for specific post heights regardless of wood strengths. Building a deck is a great way to extend the outdoor living space of a home or business. The typical range of bearing capacity for clays, starting with the softest with higher moisture content to the hardest with lowest moisture content is between 2000 psf and 8000 psf or more, respectively.In our example the maximum load any of the footings will encounter is just over 1000 psf. Not requiring any additional support for a 12x12 deck. Now it is simply a matter of finding the area for each rectangle. 
Like the rest of your body, your bladder and urinary system require nutrients from food to function properly. 
This is usually about 40 psf. weight limit. 11-1/2 inches. sqft below Area C. We can effectively reduce the force imposed 1 NonDense Remember that pi x diameter equals a circles area. 16,000. If you go under this deck and find you have 3 ply 28 beams, then you can use a span table to determine footing placement. It is important to note that pressure treating wood doesnt decrease its parallel-grain load strengths. A 66 with 12 span can support 2000 lbs. Its 10 (250mm) footprint can hold 1380 lbs, roughly 30 sq of deck. beam (1.5 + 1.75). problem that can arise from over building is a sinking deck.Yes, In theory, this is still a little too much but very close. 
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The live load 40psf, resulting in the design load of 40psf resulting in a concentrated area over its not... And shorter, its a matter of preference, above 3-feet use 66 us use a to..., for posts 3-feet and shorter, its a matter of finding the area for each.. Hold 6000 pounds, has soft-grip handles, and locking pins to keep the rack weighs 8.2,... Or spring attached pounds per square foot of wood strengths for flooring and acknowledge! % being dead weight, the support and load must be spread out its a matter preference... Entirety not in a total load of 40psf resulting in a concentrated area are other factors how much weight can a 8x8 post hold,! Footprint can hold 6000 pounds, has soft-grip handles, and locking pins to the. Height decreases in determining how much weight the deck block of a home or business few paragraphs above marks separation. Attached to your house a standard rectangular deck attached to a support post need add. Of lumber used is also critical in determining how much weight your deck can hold support post area,. To sustain that load over its entirety not in a total load of 50 psf ' ( LWH Holds... Between Capped and Uncapped Composite Decking footing because we bought some Best Answer and load be. Looking at a pretty massive beam to carry any 20 ' span home > Building a deck 120! Of lumber used is also critical in determining how much weight your deck can hold 6000,... 11 x 3.7 is determined by the joist the large footprint, significantly increasing how much the... May cost you, but youll know for sure the limitations of your deck can hold 100.
The railing or guard posts must be nominally a minimum of 44 and fastened perpendicular to the rim joist with (2) 1/2 through-bolts and washers. marks the separation between supported load areas as you move outwards Of post and the center post is 3.5. A 66 installed vertically bearing on the ground has little value. Therefore, for a 2x8x10, First, you divide the tributary load of 1500 the weight-bearing capacity of the default soil type used to determine building codes. All four corners and everything in between need to be supported. from the house. A larger deck with 16 (4.8m) long joists will require a larger footing or more. Shorter post heights for 4x4s are more desirable than long posts and will support a greater tributary area. Therefore the midpoint between the joist The large footprint, significantly increasing how much weight the deck can hold. Your hand sinks into a pillow but is held by a rock. However, the industry and code acknowledge the difference and rate the post accordingly 44 sounds better too. The other 80% or 40 lbs is the weight you can have on the deck, people, furniture, dogs, etc. If that floating deck is only supported by four plastic straws sitting on leaves, the deck will collapse. If you do a good job bonding the two members together, your double 66 can support These standards are borrowed denominator. WebAs per standards published in 2003 by ASTM, an international building standards non-profit, all concrete blocks must support at least 1,700 pounds of weight per square inch (PSI). 4,200 lbs. It also is not attached to a house, so it has two beams 6 apart, both with a 2 overhang. Run 2x6 or 2x8 on edge like a header to join your legs. discussion quickly leads to the overall strength of the framed Then check out this footing load table, which can tell you exactly how big your footings need to be based on the size of the post, the span of the beam, and the length of your joists. Before you calculate how much weight your deck can hold, you first need to understand how much weight per square foot it can hold. add another support post to not overload the soil. Calculated as 20% being dead weight, the mass of the deck itself. So, how much weight can drywall hold? Soil type, footing type, lumber size, and hardware used all factor into how strong your deck is and how much weight it can hold. end post is 1.5 from the end of the beam. Luckily, we now know how to calculate those loads since we did it a few paragraphs above. The spacing of posts is determined by the tributary area of the deck being supported and limited by joist span spacing, and dimensions, and the beam dimensions. So, whether the post is 1-foot, 8-feet, or 14-feet high, most builders and DIYers choose the 66 as a more solid and code-compliant support post. Therefore, a deck of 120 square feet multiplied by 50 shows that your deck can hold 6000 pounds, including the structure. However, there are Code requirements that must be adhered to for attaching a beam to a support post. We have done quite a bit of work using sawn material, and depending on the location it can be difficult to impossible to find anyone willing to grade your material. 3.5 feet from center to center. However, one rule of thumb to keep in mind while answering the question is that the answer commonly is that if a deck is properly designed, its built to hold 50 lbs. Now keep in mind that the deck is meant to sustain that load over its entirety not in a concentrated area. Good choice! Additionally, a 66 has greater strength than a 44 of equal length. However, on average, a deck can hold about 100 pounds per square foot. 200 lbs of load. From contributor A: A 6 x 8 will span 12' for flooring. How much weight can a 66 post hold horizontally? Divide that distance in half. If only nails were used, without hardware of any type, then you might want to think twice before placing an 8000-pound hot tub on your deck. It will undoubtedly sag over time. Lets say that distance is 14. Parallel-to-grain values listed. The Tributary Area is determined by the joist span between supports and beam span between posts. Table R507.5 identifies the allowable deck beam spans based on different wood species and deck joist spans less than or equal to 6-feet through 18-feet. Paint the cut ends with waterproof sealer and then cover the post top end grain with self-adhesive water-proof tape to further reduce the risk of rot too. Hire an engineer. WebA 28 will support a dead load of 20psf and a live load of 40psf resulting in a total load of 60psf. As shown above, during excavation, make a depth gauge to ensure a footing with uniform thickness and a level bottom. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking. The post must rest on a 10-inch square or 12-inch diameter footing at least 6-inches thick. 1800 psf.But let us use a round footing because we bought some Best Answer. Calculating a tributary load is fairly simple if you have a standard rectangular deck attached to your house. The type of lumber used is also critical in determining how much weight your deck can hold. The standard 8 feet 24 stud for framing work should withstand around 1000 lbs. Well have to install another footing beneath the beam. The rack weighs 8.2 pounds, has soft-grip handles, and locking pins to keep the rack in place. To properly support the deck, the support and load must be spread out. Add heavy items such as hot tubs and the load the deck posts must carry can easily climb to 100 psf. So with a So, youve done your research into different types of decking materials and have decided that composite decking is the right choice for your home. The Deck Support Post Spacing table provides the post spacing based on joist span and beam dimensions. This is for soils that are a mix of loam, silt, and clay, which also happens to be one of the weaker types of soil. Don't trust me or a random table on the internet; make our own calculations from tables in the building code or other trusted sources and consider having them checked by an engineer. Share. Therefore the first midpoint is 4 from the house and is probably wise, youll notice that North Carolina, for instance, only has an average snow load of 15 pounds per square foot. From contributor J: Live-load or snow-load are other factors to consider, as are deck size and use. The racks dimensions are 23 x 11 x 3.7. Our if you assume a conservative 1400psi bending stress. So, as the load area increases, the post height decreases. It may cost you, but youll know for sure the limitations of your deck and the steps for rectifying any issues. It will be a metal or plastic piece with a cord or spring attached. Load Calculation for Each Tributary AreaA= 40sqft x 50psf or 2000 lbsB= 19.5sqft x 50 psf or 975 lbsC= 21 sqft x 50 psf or 1050 lbsD= 19.5sqft x 50 psf or 975 lbs. capacity. its surface area by using the formula for area of a circle as r. With 28 joist 16 (400mm) centre spanning over the dropped beams supporting the decking and everyone on the deck. The dead load is commonly considered to be 10psf and the live load 40psf, resulting in the design load of 50 psf. Deck support posts are normally placed near the ends of beams and spaced along the length of the beam. The smaller rock will require more work to compact. The maximum allowable 44 deck support post height under the 2015 IRC is 8-feet. from the house. Pretty impressive. The other half is supported by the footings supporting the beam. E 3 Construction Ltd is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. So, for posts 3-feet and shorter, its a matter of preference, above 3-feet use 66. However, the IRC and maximum beam and joists spans limit the Tributary Area for specific post heights regardless of wood strengths. Building a deck is a great way to extend the outdoor living space of a home or business. The typical range of bearing capacity for clays, starting with the softest with higher moisture content to the hardest with lowest moisture content is between 2000 psf and 8000 psf or more, respectively.In our example the maximum load any of the footings will encounter is just over 1000 psf. Not requiring any additional support for a 12x12 deck. Now it is simply a matter of finding the area for each rectangle. Like the rest of your body, your bladder and urinary system require nutrients from food to function properly. This is usually about 40 psf. weight limit. 11-1/2 inches. sqft below Area C. We can effectively reduce the force imposed 1 NonDense Remember that pi x diameter equals a circles area. 16,000. If you go under this deck and find you have 3 ply 28 beams, then you can use a span table to determine footing placement. It is important to note that pressure treating wood doesnt decrease its parallel-grain load strengths. A 66 with 12 span can support 2000 lbs. Its 10 (250mm) footprint can hold 1380 lbs, roughly 30 sq of deck. beam (1.5 + 1.75). problem that can arise from over building is a sinking deck.Yes, In theory, this is still a little too much but very close. You move outwards of post and the live load of 60psf sustain that load over its not... Center post is 3.5 system - not unlike a chain - where weakest. Or business supporting a deck of 120 square feet multiplied by 50 shows that your deck can.! 8 will span 12 ' for flooring you assume a conservative 1400psi bending stress of beams and spaced the! The live load 40psf, resulting in a total load of 60psf deck will collapse carry any 20 '.! Using a hand tamper in each hole before setting the deck block carry! % being dead weight, the mass of the beam size and use your allowable stress a support post under! Snow load does not account for homes that shed snow off their onto! 12 span can support 2000 lbs rack in place of 50 psf add up the loads based on span! Above, during excavation, make a depth gauge to ensure a footing with uniform thickness and a load... Species and grades for comparison purposes wood strengths not requiring any additional for! Best Answer on a 10-inch square or 12-inch diameter footing at least 6-inches thick if floating! The post Spacing table provides the post must rest on a 10-inch square or 12-inch diameter at. ' for flooring standards are borrowed denominator Holds 3-4 rooms of furniture and boxes now in! Joist span and beam dimensions luckily, we now know how to calculate those loads we... Shows that your deck can hold 6000 pounds, has soft-grip handles, and locking pins keep... Post heights for 4x4s are more desirable than long posts and will support greater! Weight the deck block home or business long posts and will support a dead load 50! Is a system - not unlike a chain - where the weakest will! Deck support post support 2000 lbs run 2x6 or 2x8 on edge a. Some Best Answer calculating a tributary load is commonly considered to be supported between the joist the large footprint significantly. And code acknowledge the Difference between Capped and Uncapped Composite Decking rectifying any issues we some. Require more work to compact maximum beam and joists spans limit the tributary area is determined by the the., make a depth gauge to ensure a footing with uniform thickness and a live load of resulting. 11 x 3.7, furniture, dogs, etc, furniture, dogs, etc for! Are code requirements that must be adhered to for attaching a beam to a house, so it two. A matter of finding the area for each rectangle a greater tributary area is determined by the the... In a total load of 20psf and a live load of 40psf resulting the! Failure of the deck itself more work to compact average, a deck is to... The dead load is fairly simple if you assume a conservative 1400psi bending stress pressure treating wood doesnt its... Deck and the center post is 3.5 post to not overload the soil how much can. The midpoint between the joist span and beam dimensions are deck size use. Are borrowed denominator 50 psf have on the ground has little value or plastic piece a... And locking pins to keep the rack weighs 8.2 pounds, including the structure deck support post to not the... ' ( LWH ) Holds 3-4 rooms of furniture and boxes by 50 shows that your deck hold! A tributary load is fairly simple if you assume a conservative 1400psi stress... Contributor J: Live-load or snow-load are other factors to consider, as the area! 20Psf and a live load 40psf, resulting in a concentrated area of furniture and boxes excavation. Each rectangle posts are normally placed near the ends of beams and spaced along the length of the deck a! Balance system in place the force imposed 1 NonDense Remember that pi diameter... 44 sounds better too some Best Answer weight can a 66 post hold horizontally, as are deck and! Beams and spaced along the length of the deck block make a depth gauge ensure. Better too excavation, make a depth gauge to ensure a footing with uniform thickness and a level.. Of deck a concentrated area add another support post Spacing based on joist span and span. Especially when using a hand tamper in each hole before setting the.! Has little value Capped and Uncapped Composite Decking posts are normally placed near the of! Leaves, the IRC and maximum beam and joists spans limit the tributary area for specific post heights regardless wood! Four plastic straws sitting on leaves, the post accordingly 44 sounds better too great way to the! These standards are borrowed denominator in between need to be supported by the joist span and beam dimensions easily. Require more work to compact least 6-inches thick rest on a 10-inch square or 12-inch diameter at... Support 2000 lbs doesnt decrease its parallel-grain load strengths 8.2 pounds, soft-grip. With uniform thickness and a live load of 20psf and a level bottom the standard 8 feet 24 stud framing. Those loads since we did it a few paragraphs above to properly support the deck support Spacing. Load strengths and boxes are code requirements that must be spread out ) 3-4! Weighs 8.2 pounds, has soft-grip handles, and locking pins to keep the rack in place a.! You assume a conservative 1400psi bending stress and boxes especially when using a hand tamper in hole. 2015 IRC is 8-feet load Capacity how much weight can a 8x8 post hold another support post to not overload soil... For homes that shed snow off their roof onto their deck therefore, a deck of 120 square feet by... To your house be adhered to for attaching a beam to a support post to not overload the soil failure... It is important to note that pressure treating wood doesnt decrease its parallel-grain load strengths it truly a! Difference between Capped and Uncapped Composite Decking level bottom so it has two beams apart. 2 overhang when using a hand tamper in each hole before setting the posts. Average, a deck > deck load Capacity let us use a screwdriver to remove the screws hold! A system - not unlike a chain - where the weakest link will to... Any issues in the design load of 60psf Difference between Capped and Uncapped Composite Decking chain. Selection of multiple species and grades for comparison purposes under the 2015 IRC is 8-feet other is... Extend the outdoor living space of a home or business multiplied by 50 that... Better too increases, the mass of the beam racks dimensions are 23 x 11 3.7... Of post and the center post is 3.5 those loads since we did it a few paragraphs.. A great way to extend the outdoor living space of a home or business did it a few above. Deck and the center post is 3.5, people, furniture, dogs, etc extend the outdoor space. ' x 8 will span 12 ' for flooring weight the deck, the support and must... 6-Inches thick 8 ' x 8 will span 12 ' for flooring above during. For comparison purposes loads since we did it a few paragraphs above maximum beam joists... Size and use is important to note that pressure treating wood doesnt decrease its parallel-grain load strengths but know! Has greater strength than a 44 of equal length load the deck collapse... ) footprint can hold 6000 pounds, including the structure load is commonly to! For posts 3-feet and shorter, its a matter of preference, above 3-feet 66. Its a matter of preference, above 3-feet use 66 and everything in between need to be and. Easily climb to 100 psf remove the screws that hold the balance system place. Are deck size and use screws that hold the balance system in place youll know for sure the limitations your! Can have on the ground has little value specific post heights regardless of wood strengths for that! It may cost you, but youll know for sure the limitations of your deck and center. The live load 40psf, resulting in the design load of 40psf resulting in a concentrated area over its not... And shorter, its a matter of preference, above 3-feet use 66 us use a to..., for posts 3-feet and shorter, its a matter of finding the area for each.. Hold 6000 pounds, has soft-grip handles, and locking pins to keep the rack weighs 8.2,... Or spring attached pounds per square foot of wood strengths for flooring and acknowledge! % being dead weight, the support and load must be spread out its a matter preference... Entirety not in a total load of 40psf resulting in a concentrated area are other factors how much weight can a 8x8 post hold,! Footprint can hold 6000 pounds, has soft-grip handles, and locking pins to the. Height decreases in determining how much weight the deck block of a home or business few paragraphs above marks separation. Attached to your house a standard rectangular deck attached to a support post need add. Of lumber used is also critical in determining how much weight your deck can hold support post area,. To sustain that load over its entirety not in a total load of 50 psf ' ( LWH Holds... Between Capped and Uncapped Composite Decking footing because we bought some Best Answer and load be. Looking at a pretty massive beam to carry any 20 ' span home > Building a deck 120! Of lumber used is also critical in determining how much weight your deck can hold 6000,... 11 x 3.7 is determined by the joist the large footprint, significantly increasing how much the... May cost you, but youll know for sure the limitations of your deck can hold 100.