FULLER'S FORMULA
Let:
C = number of bags of cement per cubic meter of concrete work (bag/m3)
S = volume of sand per cubic meter of concrete work (m3 of sand /m3)
G = volume of gravel per cubic meter of concrete work (m3 of gravel /m3)
c,s,g = cement-sand-gravel ratio (relative amounts of solids by volume in a mixture)
C = 55 / (c+s+g)
S = 0.028*C*s
G = 0.028*C*g
The classes of concrete mixture depends on the cement-sand-gravel ratio (c:s:g).
Class A (1:2:4) = for beams, slabs, columns, all members subjected to bending
Class B (1:2.5:5) = member not reinforced for bending stress
Class C (1:3:6) = for footing (not under water)
Note: We use here 94 lbs Portland Cement per cubic meter of concrete
Example 1:
Determine the number of bags of cement, sand, and gravel of a proposed concrete pavement whose width and length are 100 m x 200 m. The thickness is 100 cm.
Given: Width = 100 m Length = 200 m Thickness = 0.1 m
Reqd: number of bags of cement, sand, and gravel
Solution:
Volume of concrete = 100 * 200 * 0.1 = 2000 m3
Pavement = Class A (1:2:4)
C = 55 / (c+s+g) = [ 55 / (1+2+4) ] * 2000 = 15,680 bags
S = 0.028*C*s = {0.028* [ 55 / (1+2+4) ] * 2 } * 2000 = 800 m3 of sand
G = 0.028*C*g = {0.028* [ 55 / (1+2+4) ] * 4 } * 2000 = 1760 m3 of sand
is the "55" a constant value?.. where did it came from?..
TumugonBurahinwhere the 55 ame from? anyone? I really need the answer.
Burahin1 bag of cement how much sand& gravel i will mix for footings & column? any can answer this ?
BurahinIn the estimation of cement, sand, and gravel volumes for concrete proportioning, we use the Fuller's Formula.
BurahinFULLER'S FORMULA
C = 55 / (c+s+g)
S = 0.028*C*s
G = 0.028*C*g
BETTER ASK FULLER ^_^
hi...
BurahinCapital C stands for Cement?
55 Kg??
BurahinIt says. "Note: We use here 94 lbs Portland Cement per cubic meter of concrete" MEANING 40 kg. of cement.
Burahinits dry volume
TumugonBurahinAnu po possibleng manyari pag nakapalit yung ratio ng sand and gravel?
TumugonBurahinmagkakapalit din ung muka mo sa semento
Burahinha ha ha
BurahinE di wow
Burahincan u pls give further detail/s on hows the "55" came up?
TumugonBurahinHere's another way to estimate.
TumugonBurahinFactors:
Concrete - x8bags
Sand - x0.6 cu.m.
Gravel - x1.2cu.m.Just get the volume:
Ex. 100x200x.1=2000 cu.m.
C=2000x8bags=16000 bags
S=2000x0.6cu.m.= 1200cu.m.
G=2000x1.2cu.m.= 2400cu.m.
ito rin gamit ko, may table naman interms of ratio in max pajardo's book all kinds of mix, from aa to c
BurahinNaalis ng may-ari ang komentong ito.
BurahinTnx timothy sa short cut metod
BurahinSo total 2000 cu. m. ang volume ng cememtuhin, tapos ngaun
Burahingraba pa lang 2400 cu. m. na, sobrang ;lagpas na estime nyo
graba pa lang puno na yung bubuhosan mo..2400 cu.m. hahaha
Burahinpang fill lang naman po kasi ng voids yung sand
Burahinmasyado kasing playsafe ung kay fajardo laki ng pasobra
BurahinHow do you compute for the required water?
TumugonBurahinpag class A, ilang psi yan?
TumugonBurahinCould you tell me about the ratios of cement sand and aggregate of concrete for defrent marks please?
Burahin3000 psi
Burahin3500 psi
BurahinClass A = 3000 psi
Burahinwrong
TumugonBurahinNaalis ng may-ari ang komentong ito.
TumugonBurahin3000 psi ung class A
TumugonBurahinFULLER'S RULE states "mixing of a total of 42 volumes of cement, sand and gravel will produce a 27 volumes of concrete". The unit for this one is in cubic foot. Conversion of 1.0 meter = 3.281 ft, hence (42/27cu.ft) x (3.281ft/m)^3=54.94 or rounded off to a good number of 55. That is how the constant of 55 comes from. Hope it helps.
TumugonBurahinhow to estimate the labor cost of roof painting
TumugonBurahinwat is the weight of 1 sack of cement in kilograms..?
TumugonBurahinNaalis ng may-ari ang komentong ito.
Burahinit depends. there is 40 kilograms and there is 50 kilograms
Burahinhow to find the cement sand and aggregate ratio of c 12/15 type concrete
TumugonBurahin40kg/1 bag of cement yuzuru otonashi
TumugonBurahinsure ba to? kasi conversion palang parang alangan na kong maniwala. hehehe
TumugonBurahin0.1m = 100cm?
Bka ngkamali lng sa pgtype 10cm ang thickness.
BurahinBka ngkamali lng sa pgtype 10cm ang thickness.
Burahin200m x 100m x 0.10m po talaga yan..
BurahinKaya po 2,000 cu.m. ���� Meter po ang Ginamit.
100mm yan
BurahinUo nga, 1m= 10cm so therefore, dapat 100cm = 10m
TumugonBurahin1 m = 100 cm
Burahinwhere did 0.028 get
TumugonBurahin1 Bag of 94 lbs (42.63 Kgs.) Cement is 1 cu.ft. : Converting 1 cu.ft to cu.m : 1 cu.ft.x 1 cu.m./(3.28 ft.)^3 = 0.0283 cu.m.
Burahin0.1m = 100mm of 4 inches
TumugonBurahin0r 4 inches
TumugonBurahinThank you so much for this formula. I'm helping my neighbor with his driveway and we needed to know how much sand and gravel we need. He is replacing his once concrete driveway with a gravel one instead. We needed to know how many bags we were going to need.
TumugonBurahinhttp://www.mcnabbconstruction.ca
thanks. good for not engineers and layman
TumugonBurahinthanks. good for not engineers and layman
TumugonBurahinThere's something wrong with the formula. If you sum up the volume of all the material cement, sand, gravel, it will give you more than the volume of subject.
TumugonBurahinpang fill ng voids kaya may vibrator na equipment ang ginagamit parang compactor po
BurahinIf 3000 psi is equivalent for class A,how many psi for class B,C and class AA.
TumugonBurahinAA - 4000 psi
BurahinA - 3500 psi
B - 3000 psi
C - 2500 psi
patulong naman po. i am still deciding kung gi sheet o concrete deck ang bubungan ng pinaggawa naming bahay.
TumugonBurahinfor example, L(15ft) w(17.5 ft) thickness= 3 or 4"
gusto ko sana malaman, how much cement bags (40kg) aggregates and rebar ang magagamit...
sana po may sumagot (jreftwo@yahoodotcom)
maraming salamat po!
Can you indicate the specific cement mixtures class and their equivalent psi? Thank you.
TumugonBurahinGMG = Google Mo Girl
BurahinOk lng po ba 1:3:4 ratio para sa foundation footing?
TumugonBurahinyes po
BurahinOk lng po ba 1:3:4 ratio para sa foundation footing?
TumugonBurahinhi Guys, Ask ko lang what is the cement factor of 3000psi, 4000psi and 5000 psi. Thankyou! :)
TumugonBurahin1:2:4
TumugonBurahinCement(40Kg): 9 bags
Sand: .5 cu.m
Gravel: 1 cu.m
1:2.5:5
Cement(40Kg): 7.5 bags
Sand: .5 cu.m
Gravel: 1 cu.m
Approximate lng po...safe na yan from Fajardo...
ty
TumugonBurahinWe known that 1:2:4 cement concrete ratio 28 days strength 3000 psi so how we find 4000 psi ratio and witch formula we used?
TumugonBurahinHow to calculate how much cubic sand and gravel in a concrete mix
TumugonBurahinhow to calculate CSG of staircase?
TumugonBurahinVolume of concrete = 100 * 200 * 0.1 = 2000 m3
TumugonBurahinPavement = Class A (1:2:4)
C = 55 / (c+s+g) = [ 55 / (1+2+4) ] * 2000 = 15,680 bags
S = 0.028*C*s = {0.028* [ 55 / (1+2+4) ] * 2 } * 2000 = 800 m3 of sand
G = 0.028*C*g = {0.028* [ 55 / (1+2+4) ] * 4 } * 2000 = 1760 m3 of sand
mukhang merong mali. volume of concrete is 2000 pero you will need 800 and 1760 of sand and gravel respectively? daming excess ah. di pa kasama ang volume nang 15680 bags of cement. paki linaw please.
the idea is sand will only fill the void between gravel, same as cement will only fill the voids between the sand, the solution is correct
BurahinI think fuller's formula uses 50 kilograms per bag of cement. So, If Im correct you have to multiply the result in bags by 1.25
BurahinNaalis ng may-ari ang komentong ito.
BurahinI know Laura well and she is principled, thoughtful, and extremely bright...more power to her!
TumugonBurahinFunction Point Estimation Training in Chennai
ask ko lng po kung ung 1:2:3 ratio na class A gawing 1:2.5:2.5 para maiwasan ang pagbara ng mixture sa mga bakal lalo na sa pagitan ng beam at column.
TumugonBurahinAA(1:1.5:3)12C:.5cu.m S:1Cu.m G
TumugonBurahinA(1:2:4) 9C:.5cu.m S:1cu.m G
B(1:2.5:5) 7C:.5cu.m S:1cu.m G
C(1:3:6) 6C:.5cu.m s:1cu.m G
ex. V=1.5cu.m Class A
1.5×9=13.5 or 14bag of cement
1.5×.5=.75 cu.m of Sand
1.5×1=1.5 cu.m of Gravel
ex. V=3.5cu.m Class C
TumugonBurahin3.5×6=21 bag of 40kg cement
3.5×.5=1.75 cu.m sand
3.5×1=3.5 cu.m gravel
ano po mixture for mortar and plastering?
TumugonBurahinThis is really an easy way to get a rough estimate in case you are in the field. http://www.doyleconcrete.ie/services/sand-and-gravel/
TumugonBurahinIlan po cement,sand and gravel mggamit ko s 20sq meter n garahe
TumugonBurahinwe are asking a builder to build a fence 30M x 2.40M and 9.5M x 3M
TumugonBurahinhow deep should be the foundation provided that we will do a land fill of about 1m. Can someone give me a price possible price for it, please?
pano mag mix ng 5000PSI? Pang manhole po
TumugonBurahinGuys anu po Ratio ng 5k psi mix design .. ( job mix )
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TumugonBurahinVery well done. Absolutely brilliant information. I'm in love with this blog. they always provide such a great information. plaster sand bags
ano po cement factor po ng 5000psi?
TumugonBurahinNaalis ng may-ari ang komentong ito.
TumugonBurahinhow to compute laying of CHB. asap please ^_^
TumugonBurahinI discovered your site ideal for me. It consists of wonderful and useful posts. I've read many of them and also got so much from them. In my experience, you do the truly amazing. Truly I’m impressed out of this publish. Construction estimation
TumugonBurahinSomething is wrong with that. Because a 40kg bag of cement is 0.0265m³. Thus a m³ of cement is 1m³/0.0265m³= 38.46 bags of cement/m³.
TumugonBurahinHow did it became 55?
Something is wrong with you.
Burahin1cu.m of concrete not 1cu.m of cement. COncrete is composed of cemetn , sand , gravel, water. Why would you make 1cu.m of pure cement???
BurahinOk
TumugonBurahinYung Note po dito is 94 lbs of Portland cement per m³ of concrete, which means 40 kgs of cement. Paano naman po yung formula kung 50 kgs of cement ginamit? Thankyou po
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TumugonBurahin