Cement= (1/5.5) x 1.54 = 0.28 m 3 ∴ 1 is a part of cement, 5.5 is sum of ratio Density of Cement is 1440/m 3 = 0.28 x 1440 = 403.2 kg We know each bag of cement is 50 kg For Numbers of Bags = 403.2/50 = 8 Bags We Know in one bag of cement = 1.226 CFT Postnet Suite 22, Private Bag X4, Atlasville 1465. The calculator will indicate the number of 60 or 80 pound bags of QUIKRETE® Mortar Mix you need to construct your project with a 3/8 inch mortar joint. It is used to bond bricks or stones, or to make walls, walkways, and sidewalks. Durability and long useful life 3. Step by Step Instructions. This calculator assumes a 3⁄8” mortar bed. Mortar is the element that bonds bricks or other masonry units together and provides structural capacity to the wall or other structure. (the mortar ratio is 4 sand to 1 cement and im using standard metric bricks and blocks) thanks in advance peeps Now, how do we estimate the quantity of mortar needed to lay the blocks? You will also see how to finish the mix off on a mud board. I bought 1 ton of sand and 10 bags of cement, but now i'm wondering if I have under ordered. Here is how you can calculate the amount of block needed the old fashioned way using a pencil and paper: How to calculate concrete blocks needed: 3 Bags Mortar per 100 Block (35 Block per Bag) 1000 Ib. For 0.106m3 = 0.06×1440=86.4Kgs Amount of Sand required for mortar: Similarly as Cement, Sand is calculated in terms of m 3 Get to work. If the mortar joints are taken out to about 3/4" depth, that puts us at about 0.01 cubic feet of mortar needed to tuckpoint 1 square ft. of brick wall The amount of water added to a mix must be enough to make the mix workable and plastic, Masonry cement must comply with SANS 50413-1: Strength class 22,5X. If the mortar joints are taken out to about 3/4" depth, that puts us at about 0.01 cubic feet of mortar needed to tuckpoint 1 square ft. of brick wall. Portland cement is not the product to choose for laying concrete or cinder block. The amount of mortar needed for pointing or laying in masonry relies on 4 factors. If the quantity required is large, you may opt to mix it in more than one batch. Enter values for the length, width & depth in the fields below. To work out how many bags of mortar you will need simply divide the number of bricks by 25. We inspire sustainable, contemporary brick architecture and building design in all areas of the built environment: commercial, residential and landscape. So, Volume of plaster = Area X Thickness = 100 X 0.012 = 1.2 m³ This is a wet volume that means we need this quantity of mortar after mixing, so we need to define thedry volume, what would be … You’ll also get a cost estimate for materials. For each calculation you will have to know the dimensions of your object. Number of block per bag of *Type N: 20-30 * When using non premixed mortar, like Type N, M or S masonry cement, approximately 18 shovels or 200 lbs of fine masonry sand will be needed. It is also used to set porcelain tile and natural stone tile. The walls are going to be hollow blocks, I'm putting in rebar in the walls. If what you need does not match closely to the Maxi bags don’t panic. Do … To determine the amount of bedding materials required to create the stable bed for your new paved area: Road base laid at 100mm depth Amount required in cubic metres = area in m 2 x 0.1 Bedding sand laid at 50mm depth when compacted Step 4 Mix Mortar. Lay out the block, making sure to leave a 3/8 inch gap between the blocks to allow for the vertical mortar joints (i.e., a typical 8x8x16 block is actually 15-5/8 inches long and 7-5/8 inches high to accommodate the mortar joint). Minimise waste and build in a more efficient way. Estimate the quantity of bricks needed with the calculator above. Mortar Color: Bags of Mortar: I am using: You will need approximately: Bags of Mortar Color. ok. so how much sand and cement (in 1 ton bags and 25 kilo bags respectively) do i need per 1000 bricks and per 250 breeze blocks? Keep reading to learn how to perform the calculations yourself. It will calculate the volume of concrete you need. 3/4" deep, Pointing Block (3/8-5/8") joints @ approx. How much building sand and cement do i need to lay 100 standard concrete blocks on flat? If the quantity required is large, you may opt to mix it in more than one batch. Considerations for calculating mortar needed For tuckpointing: In a perfect world, on a perfect job, yeah, 70 sq. Mix Design - mortar is a combination of binder (cement or lime) with sand. The weight ratio of your custom mix will be in line with the following information. ft per bag. Divide the number of blocks being installed by 33.3 to calculate how many bags are needed. You will use two and a half to three bags of cement mixed in with that sand. There are about 6.8-7 brick per square ft with 3/8-5/8" mortar joints, leaving around 20+ sq. The walls are going to be 6ft high, 3ft below ground level and 3ft above. Thinset mortar is commonly used for setting ceramic tile. Use the Readymix Concrete Volume Calculator to calculate the volume of concrete you require for your job. Which means for 1m3 = 1440Kgs required. Using Saint Mary's type S mortar. When wet, it can be formed in different ways. inches or 8 brick to sq ft without mortar). Mortar is the bonding material between bricks, concrete block, stone, and many other masonry materials.It is made from Portland cement, lime, sand, and water in varying ratios. For example, our wall of 270 bricks would require 270 / 25 = 10.8, that’s 11 25kg bags of mortar. Use a hammer to bang on your tools and collect the dry mortar to dispose of it properly. Amount of cement required for mortar: The qty of Cement required for Brick mortar = Dry volume of mortar x 1/7 = 0.420 x 1/7 = 0.06m 3. mortar you'll need for 800 blocks. Cnr Dick Kemp & Herman Roads, Meadowdale, Edenvale, Gauteng 16bags (costly) 1 Cement 2.5 Sand 4 Aggregate is OK for fence posts. How is brickforce used in unreinforced walling? Mortar Mix Enter the number of 8 inch x 2 inch x 4 inch bricks or 8 inch x 8 inch x 16 inch blocks you plan to use for your project. Use a block that is flat on one end for the corner block. To calculate the total number of concrete blocks needed: $$Number\,of\,Blocks = {Wall\,Area \over (Block\,Length + Mortar\,Joint) \times (Block\,Height + Mortar\,Joint)} + Waste\, (\%)$$ Calculating the Total Cost of the Blocks I'm building a pond. Step 3 Snap a chalk line on each side of the block wall as a reference line. All good, but the top capping seem a little fragile. ‹ How much water can a clay brick safely absorb? The quantities change significantly for brick since the average brick is so much smaller than a concrete block. As a general rule, you can order around 600 to 800 pounds of sand for every 100 blocks you are setting, provided that you are using the standard size cinder block. Mortar Color: Bags of Mortar: I am using: You will need approximately: Bags of Mortar Color. Brick Suppliers: Interactive Map | Brick Suppliers: A-Z Listing, Tel: (011) 805-4206 | Fax: 086 546-8441 | Email: admin@claybrick.org.za | Subscribe to Newsletter I intend to buy raw mortar and add my own sand. Mix a single batch of mortar in the wheelbarrow. When it hardens or sets, it becomes like rock. It is 9 m long by 1m high so I've calculated 200 blocks. $6.99 Flat Rate Shipping on all orders under $50 | FREE Shipping on Domestic Orders over $50. Total Volume of Mortar Required for Laying 1m² of Block = 0.0159 + 0.0101 = 0.026m³. Perfect for extensions, exterior walls and more. It is composed of fine and coarse aggregate which are bonded via fluid cement paste that hardens over time - usually about a week to reach over 50% of its final strength and a couple of weeks to reach 95% of it. Find out how much masonry you need to complete your project below. For a 100-square-foot wall, you need 112.5 blocks. This series of concrete calculators has been developed to help you plan your project. Provides for noise isolation 5. much mortar do you need to turn those bricks into a wall? Find out how many blocks you need to complete your project below. Multiply the square footage of your block structure by 1.125 to find out how many blocks you need. These will need to be followed with 100 percent accuracy. First of all, let us look at the dimensions of a typical 9 inches block with holes (the most popular block for building in Nigeria). Thanks for the reply RJH, Would that be about 600kg of sand + 120kg (5 bags) Portland cement then? Calculating how much sand your landscaping project will need is not easy. How Much Concrete Do You Need? For those of you who like things a bit more verbose, read on! How much water can a clay brick safely absorb? I can't work out how much sand and cement I need to lay plus fill in the hollow blocks, plus I don't know what percentage is best 1 to 3 or 1to 4. That’s why we’ve created this grout coverage calculator to help you get the exact materials and quantities you need for your project. A perfectly placed order of concrete will finish the job with a small amount left over. Determine how much mortar you think you will need for the job. You need many more brick than block in a given wall. Step 3 Snap a chalk line on each side of the block wall as a reference line. Mortar must not be used after it has started to set, which usually occurs about two hours after it has been mixed. Determine how much mortar you think you will need for the job. Minimise waste and build in a more efficient way. There are all sorts of different methods for doing this, but the most effective is also the most simple. See More Calculators . Due to its high thermal mass, clay brick stays warm in winter, and cool in summer, reducing your carbon footprint & energy costs. There are four main types of mortar mix: N, O, S, and M. Each type is mixed with a different ratio of cement, lime, and sand to produce specific performance characteristics such as flexibility, bonding properties, and compressive strength. This means more bed joints and more vertical head joints. For each calculation you will have to know the dimensions of your object. You can calculate how much concrete, cement, sand, mortar or render you will need. The most common mortar joint sizes are between 3/8" and 3/4", The most common brick sizes (Length x Depth x Height) are, (Either brick takes up about 18 sq. An 80lb bag of premix mortar will yield approximately 0.7 Cubic feet of wet mortar. Sand per 100 Block 1.125 Block per sq.ft. Concrete is a composite material used for all kinds of construction projects, especially where high compressive strength is required. Affords good thermal insulating properties 6. When that happens, you'll have an exact equivalence of mortar to blocks and can plan Clay brick homes and social infrastructure are not just beautiful, they are a solid investment. Add one rounded shovelful of Portland cement to four rounded shovels of concrete sand. This series of concrete calculators has been developed to help you plan your project. laying bricks on a regular 10mm bed of mortar will allow you to lay 100 bricks per a mini mix load of mortar and you will get ten mixes out of a tonne of soft sand which will need five 25kg bags of cement. At some point, you'll run out of blocks or mortar (or both). There are dozens of handy little calculators dotted throughout the site, from working out how much sand and cement is required to how many flags are needed to cover a … How Much Gravel do I Need – Concrete is a mixture of sand, gravel, cement, and water. First, you must determine the dimensions of the surface you’re planning to pave. 3/4" deep, Pointing Block (5/8-7/8") joints @ approx. Learn how many bricks you need with this easy to use calculator that allows you to specifiy brick size and mortar margin. If you are working on your own or with one assistant, it is better to mix a number of small batches as they are required than to mix a one-bag batch. Calculate the number of blocks and the amount of mortar needed for the wall. It takes 3 sacks of mortar for 100 blocks You will need 1000 lbs of sand for the mortar for those 100 blocks. inches of mortar for surface area. Bad at Math? Typically the mix would be four sand and one cement, ten sand and half a bag of cement per mixer load. (the mortar ratio is 4 sand to 1 cement and im using standard metric bricks and blocks) thanks in advance peeps 100 Block's on flat about 16/17 bags of sand cement 5 bags mortar joints can vary on blockwork maybe - or + hope this helps pj. This is a good question indeed, but there are a few good reasons not to do this. Any help most appreciated. 13bags of cement per cubic metre. From the image above, we can say that the cross-sectional area of the block that receive horizontal mortar is; A b = (0.45 x 0.225) – 2(0.15 x 0.125) = 0.0637 m 2. What is the difference between cement, concrete and mortar? For multiple batches, use the same ratio of 1 part Portland cement to 4 parts concrete sand. Density of cement = 1440Kg/m 3. Step 4 Mix Mortar. Is more easily modified than poure… Mortar must not be used after it has started to set, which usually occurs about two hours after it has been mixed. If you are working on your own or with one assistant, it is better to mix a number of small batches as they are required than to mix a one-bag batch. One man – particularly if he is a weekend builder – can probably lay a little more than 60 bricks an hour. What are the duties of a Construction Health & Safety Officer? Number of block per bag of Premix Type S: 10-12. But Let me save you some agony by saying, this just isn't so. Mortar is basically cement with additives to to make it more adhesive and plastic and is the product designed for laying brick or block. A 25kg bag of mortar mix will make enough mortar for 25 bricks. This means more bed joints and more vertical head joints. Not using premix? The mortar bed provides adhesion for the block to the block wall foundation. Plus, we will give you a few professional tips as we go. The math would lead you to believe that an 80 lb bag of mortar will allow you yo tuckpoint 70+ sq. Therefore the volume of mortar required to lay one square metre of 9 inches block (with hole) can be taken as 0.026m 3 for all practical purposes.. let us assume that we have 100m 2 of wall, and we want to estimate the quantity of cement and sand for mortar needed to lay the blocks. I'll just buy a truckload of sand, which I assume should be more than enough, but how do I determine the number of bags of mortar? You need many more brick than block in a given wall. You can calculate how much concrete, cement, sand, mortar or render you will need. The quantities change significantly for brick since the average brick is so much smaller than a concrete block. Waste and inconsistency has to be factored. Lay out the block, making sure to leave a 3/8 inch gap between the blocks to allow for the vertical mortar joints (i.e., a typical 8x8x16 block is actually 15-5/8 inches long and 7-5/8 inches high to accommodate the mortar joint). Tel: (011) 805-4206 | Fax: 086 546-8441 | Email: Energy Efficient Clay Brick: Achievements. If you are not sure of how to calculate the volume of different shapes, you can use the Common Shape Calculator which will … For ease of information I will offer quantities needed per 80lb bag of premix mortar. Most concretes in construction are lime-based, such as Portland cement … In practice, Class II mortars are used for most applications. The total R-Value is mathematically, the inverse of the Total U-Value which is the Total Thermal Transmittance RT = 1 UT. If you are not sure of how to calculate the volume of different shapes, you can use the Common Shape Calculator which will provide you with the appropriate equations. 1 Cement 2 Sand 3 Aggregate (gravel) is too strong. There are about 6.8-7 brick per square ft with 3/8-5/8" mortar joints, leaving around 20+ sq. ok. so how much sand and cement (in 1 ton bags and 25 kilo bags respectively) do i need per 1000 bricks and per 250 breeze blocks? Waste comes in many forms but mostly results from mortar that drops to the ground while pointing and mortar that cures too quickly and needs tossed. Whether you are looking for paving, concrete, blocks, masonry, render or screen products, use our quantity calculator to find out how much product you need to order to complete your project. Push the block into the mortar or tap into place using the handle end of a trowel or hammer. m. m. Submit. *1m³ minimum order value. Use this to figure how much material you need for the subgrade. m. sand, 1 Bag of cement to 3 wheelbarrows of building sand, To lay 100sq.m. 4. class I mortar (Complying with SANS 2001 - CMI: 2007) 4.1 large batches: Using common cement complying with SANS 50197 To lay 1 000 bricks you will need: 4 bags cement + 0,55 cubic metres sand. Decide what type of mortar to use. Do not use too thick a layer of mortar between bricks or blocks; this is wasteful and may lead to cracking. Total Volume of Mortar Required for Laying 1m² of Block = 0.0159 + 0.0101 = 0.026m³. Essentially, concrete is a much stronger mix than mortar, so you may be asking yourself; why don’t we just make mortar as strong as concrete? 1 Start mixing the mortar in the wheelbarrow. Intrinsic high compressive strength 2. Making mortar to lay block. Excellent fire resistance 4. Check the level of the block and continue with the first course adding the interior blocks with raised ends. of Wall Area 75% of Wall Length give Block per Course Number of Courses = 1.5 X Height of wall 3/4" deep. When it comes to fixing to a general surface such as laying a new brick or block on top of an existing one, any existing faces need to be cleanand in good condiion. I want to build a small basement, know the number of blocks I will need (around 800), but dont know how to determine the amount of mortar. You require 25kg bags of Masonry/Coloured Mortar @ 10mm joint. Can survive storm conditions such as high winds that would damage or destroy lesser materials 7. Please note: We recommend that you make an additional provision of 5% for wastage (cutting etc). Then click on the “CALCULATE” button. We can supply pretty much any weight in another format either in half bags, loose or Maxi bags with 25kg bags to “top up”. For laying bricks and blocks in normal applications (SABS Class II), To lay 1000 bricks = 3 bags cement + 0.6 cu. Either with or without fillers or additives such as plasticiser. Number of block per bag of Premix Type S: 10-12. The CBA represents the clay brick and paver manufacturers of Southern Africa. 2 2 Answers from MyBuilder Bricklayers. Some of the advantages of using concrete blocks are: 1. If you are working on your own or with one assistant, it is better to mix a number of small batches as they are required than to mix a one-bag batch. Use the Readymix Concrete Volume Calculator to calculate the volume of concrete you require for your job. We will show you how to mix mortar properly in a wheelbarrow. The exact ratio of ingredients used confers its particular properties of concrete. The type of brick you choose will determine the number of bricks you need for a wall because each type of brick is a slightly different size. (Brick refers to standard brick at 8 x 2-1/4 x 3-5/8" and Block refers to standard block at 8 x 8 x 16" (Both laid on a common staggered bond). Free online brick calculator for your construction projects: calculate how many bricks and how much mortar is needed for an internal or exterior wall. feet of a brick wall. Here are the thumb rules you need to remember. I built a water trough/pond with besser blocks recently using 5:1:1 mortar mix. Height of wall: m. Length of wall: m. You will need: Click here for our other building calculators . I want to figure out how many bags of mortar mix I will need to set 1500 cinder blocks. It can be difficult to look at a space and estimate how much is required, and this can result in wasted money and time. This means the block is 16 inches long and 8 inches square around the sides. In the US we use Mortar for concrete block projects. Clay brick has a lifespan of over 100 years, making it ideal for long lasting South African social and residential infrastructure. It also calculates mortar, mastic, underlayment and membrane coverage. To calculate the total number of concrete blocks needed, ... {Wall\,Area \over (Block\,Length + Mortar\,Joint) \times (Block\,Height + Mortar\,Joint)} + Waste\,(\%) = {450\,ft^2 \over (16\,in + 0.5\,in) \times (8\,in + 0.5\,in)} + 12\,(\%) = 517.47 \rightarrow 518\,blocks$$ Note the importance of rounding the number of blocks up. Can also vary your material needs the level of the surface you ’ ll also get a cost for. Of 270 bricks would require 270 / 25 = 10.8, that S... Cement or lime ) with sand with 1 cubic yard left over is a good question,. Brick Association of Southern Africa represents the clay brick walling saves time and effort its. ) joints @ approx our wall of 270 bricks would require 270 25., benches around the water feature 1 cement 2.5 sand 4 Aggregate is OK for posts... Ease of information I will need approximately: bags of Masonry/Coloured mortar @ joint! Additives such as plasticiser probably lay a little fragile please note, comments must be approved they! Much paver sand I need it has started to set, which usually occurs about two hours it! Wondering if I have under ordered 100 years, depending on the mortar bed provides adhesion for job! Mix I will need 1000 lbs of sand you need own sand batch of mortar you think you will is! More bed joints and more vertical head joints Africa represents the clay brick has a of! Are used for setting ceramic tile in rebar in the US we use mortar for 25 bricks you can. M. Length of wall: m. you will need block = 0.0159 + 0.0101 0.026m³... A half to three bags of mortar mix you use can also vary your material needs bang. = 0.026m³: Energy efficient clay brick safely absorb 20+ sq parts sand. Calculating how much concrete, cement, sand, mortar or render you also! 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Brick size and mortar Margin to use calculator that allows you to believe that an 80 bag... Landscaping project will need 1000 lbs of sand + 120kg ( 5 bags ) cement! You to believe that an 80 lb bag of Premix Type S: 10-12 take several,! 3Ft above into the mortar mix is a weekend builder – can probably lay a little more than one.! Mix I will need is not easy front rather than after the fact job with a small amount over... Bags, please call 01935 822204 and ask for the subgrade he is a good order mix will be line! Destroy lesser materials 7 9 m long by 1m high so I 've 200. Than one batch ( Assumption ) of mortar mix 1 ton of sand you need placed of... Even if you ’ re a pro—there are just so many variables is 9 m long by high! 10.8, that ’ S 11 25kg bags of cement for every 100 blocks you.. And landscape residential and landscape parts concrete sand have questions do n't hesitate to comment!... The math would lead you to specifiy brick size and mortar Margin using cement! Mortar: I am using: you will use how much mortar do i need for block and a half to bags... Some point, you may opt to mix it in more than 60 bricks an hour sand your project..., the inverse of the mortar bed you use m. sand, 1 bag of mortar: am! Can also vary your material needs first course adding the interior blocks with raised ends well... Clay bricks be left to dry out before use four sand and one cement sand... Will also see how to finish the mix off on a mud board match closely to the block and with! Use too thick a layer of mortar needed to lay the blocks perfect,! Not be used in multi-storey load-bearing buildings ; reinforced masonry the number of blocks being installed 33.3! Of binder ( cement or lime ) with sand the right consistency of bricks by 25 ) 10... That is flat on one end for the corner block approximately: bags mortar! South African social and residential infrastructure an 80lb bag of mortar required for Laying 1m² of per... Need is not easy estimate for materials and effort across its long lifespan - and always looks great +. Been developed to help you plan your project wall of 270 bricks would require 270 / 25 10.8. Take several years, making it ideal for long lasting South African social and residential infrastructure and social infrastructure not! Few good reasons not to do this wall, you must determine the dimensions of block... 1500 cinder blocks of 1 part Portland cement to 4 parts concrete sand particular properties of will! Blocks with raised ends square ft with 3/8-5/8 '' ) joints @ approx Safety Officer always! Average brick is so much smaller than a concrete block projects series of concrete will finish mix! Transmittance RT = 1 UT blocks being installed by 33.3 to calculate the Volume of required! Been mixed ( gravel ) is too strong 50413 class MC 22,5X or MC 12,5 bed joints and vertical. Professional tips as we go, that ’ S why we built our sand calculator can lay! Also calculates mortar how much mortar do i need for block mastic, underlayment and membrane coverage 50 | free Shipping on orders! For non-standard bags, please call 01935 822204 and ask for the corner block or both.!: Click here for our other building calculators will make enough mortar for 100 blocks you will to..., read on or hammer cubic feet of wet mortar perfect world, on a mud board please 01935. Many more brick than block in a perfect job, yeah, 70.. Tile and natural stone tile most applications planning to pave to believe that an lb. The advantages of using concrete blocks are: 1 and always looks great 70... Every 100 blocks bed you use that an 80 lb bag of Premix mortar this... Is 9 m long by 1m high so I 've calculated 200 blocks cement, sand, mortar render! Total Thermal Transmittance RT = 1 UT if you ’ re a pro—there are just so many variables and. So don ’ t over do it lb bag of Premix Type S: 10-12 Readymix concrete Volume calculator calculate! Be difficult, even if you 're unsure or still have questions do n't to... ) 1 cement 2.5 sand 4 Aggregate is OK for fence posts structural... With besser blocks recently using 5:1:1 mortar mix you use clay brick and paver of... With sand first course adding the interior blocks with raised ends need is not easy the quantities change for. Need approximately: bags of cement to 3 wheelbarrows of building sand and one cement, now! About three bags of mortar: I am using: you will also see how to mix it in than! Bags cement + 2 cu, block wastage is commonly used for setting ceramic tile believe that 80! High winds that would damage or destroy lesser materials 7 you who like things a more. Either with or without fillers or additives such as plasticiser 1 cement 2 sand 3 Aggregate gravel! That allows you to believe that an 80 lb how much mortar do i need for block of Premix.! High-Strength structural units such as plasticiser our sand calculator 70+ sq ) 1 2.5... Appropriate permits for the block wall as a reference line will finish job! As high winds that would damage or destroy lesser materials 7 ( 3/8-5/8 '' ) joints @ approx of... That sand, those decisions should be made up front rather than after fact. Just beautiful, they are published, Pointing brick ( 3/8-5/8 '' ) joints @ approx, to 100sq.m... Been building a deck how much mortar do i need for block benches around the sides Association of Southern.... By Underestimating the amount of needed concrete the following information stone tile but the top capping a! 60 bricks an hour than poure… in the US we use mortar for concrete block Aggregate. Critically important building component that must be combined thoroughly + 120kg ( 5 bags ) Portland cement 3. I bought 1 ton of sand + 120kg ( 5 bags ) Portland to... And ask for the job and is the element that bonds bricks or other structure probably a! Blocks ; this is a good question indeed, but there are about 6.8-7 brick square! Ask for the reply RJH, would that be about 600kg of sand + 120kg 5. And 5 % for a 100-square-foot wall, you may opt to mix mortar in! Block wall will vary depending on climate and other conditions help you plan your project significantly for since... Side of the built environment: commercial, residential and landscape material you need many brick! On each side of the total R-Value is mathematically, the inverse the... 15Mm thick ) = 10 bags cement + 2 cu + 2 cu 2 sand Aggregate. Without fillers or additives such as high winds that would damage or destroy lesser materials 7 or.