Concrete Materials

This page focuses on materials required for masonry. For electricals refer Electrical Wiring .

Cost of 1 ×1×10 foot RCC pillar?

The cost is going to vary dramatically based on the number of such columns you’re building. A single column might cost more, but the marginal cost of such a pillar as a part of a project might be a very less.

Assumptions

  1. Grade of concrete M20.
  2. The footing is already casted.
  3. There is no wastage.

Mix design for M20 concrete is generally 1:1.5:3 (Cement : Fine Aggregate : Coarse Aggregate)

To get 1 CuM of wet concrete you need 1.54 CuM. of dry concrete. This is because when you mix water in it, it undergoes shrinkage.

So we divide 1.54 cum. in the ratio of 1:1.5:3

1 + 1.5 + 3 = 5.5

  • Cement = 1.54 x 1 / 5.5 = 0.28 CuM.

Now we know unit weight of cement = 1440 kg/CuM.

So cement required per CuM= 0.28 x 1440 = 403.2 kg

We also know 1 bag of cement = 50 kgs

So no. of bags of cement = 403.2 / 50 = 8.06 = approx 8 bags.

  • Sand = 1.54 x 1.5 / 5.5 = 0.42 CuM

Now we know unit weight of sand = 1600 kg/CuM.

So sand required per CuM = 0.42 x 1600 = 672 Kg

  • Aggregate = 1.54 x 3 / 5.5 = 0.84 CuM

Now we know unit weight of sand = 2400 kg/CuM.

So Aggregate required per CuM = 0.84 x 2400 = 2016 Kg

Concrete required for Column = 1 x 1 x 10 = 10 CuFt

1 Cuft = 0.0283 CuM

10 CuFt = 0.283 CuM

  • Cement require for column = 403.2 * 0.283 = 114.10 Kg

Cost of cement is Approx 450 per Bag and loose cement is Rs. 10 per Kg = 450 x 2 + 10 x 15 = 1050 Rs

  • Sand require for column = 672 * 0.283 = 190.18 Kg

Cost of sand lets assume 113 per Kg (source SPS natural river sand 15 kg at 1699/- on Amazon) (per kg cost 113 Rs) = 113 x 190.18 = 21541 Rs

  • Aggregate require for column = 2016 * 0.283 = 1570.53 Kg

Cost of Aggregate is Approx 106.5 per kg ( Source Amazing Stones Natural Tumbled Gravel Stone Chips for Garden and Landscape Decoration, Multicolour, 2 kg at 213 /- on Amazon) (per kg cost 106.5 Rs) = 106.5 x 1570.53 = 1,67,262 Rs

  • Steel required will be : ( Standard length of bar is 12 m) Assume price of steel Rs 60 per kg

10 mm bar 4 Nos = 4 x 10 ft = 40 Ft = 12.192 m = 1 Full length

10 mm steel dia weight = 0.62 / m = 12 x 0.62 = 7.44 kg

8 mm Bar for ring ( Spacing at 150 mm C-C ) = 1.16 x 21 = 24.36 m = 2 full length

8 mm steel dia weight = 0.395 / m = 24 x 0.395 = 9.48 kg

Total cost of steel = (9.48 + 7.44) x 60 = 1015 Rs

  • Labour (atleast 2 labour + bar bender + carpenter ) and Material hiring (Vibrator + Pan + tray for mixing concrete + concrete mixer + spade + Shuttering material etc) cost = Approx 10000 Rs

Water Cost approx 500 lit water required (200 lit for concreting + for curing + cleaning etc) = will cost around 300 Rs

Misc items (binding wire, Nails for shuttering, cover block, etc ) cost = 1000 - 2000 Rs

So the total cost will be approx Rs. 2,03,204 /-.

Although you can bring it down to approx Rs 38,000 /- (24000 /- for concrete and 14000 /- for labour, steel, shuttering, binding wire, nail, tool hiring, water for cleaning and curing etc) if you can order 3 CuM concrete from concrete plant which will cost around 8000 Rs per CuM ( 3CuM is the minimum order quantity)

Hope it helps

Source: https://www.quora.com/What-is-the-cost-of-constructing-a-RCC-pillar-of-4-4-inches-10-feet↗ ↗

Time:2021(Estimate. 1 year ago as on 2022-08-24)

Specification For Rcc Fencing Poles

This specification lays down various technical details for RCC Fencing poles of following two types:

  • (A) Straight type
  • (B) Bend type

(A) Straight type

  • RCC Fencing poles shall be following lengths
  • i) 1.6 mtrs.
  • ii) 1.8 mtrs.
  • iii) 2.0 mtrs.
  • iv) 2.3 mtrs.
  • v) 2.45 mtrs.

1. Reinforcement:

  • i) Main vertical bars shall be of 6.0mm dia round MS bars.- 4 Nos.
  • ii) Stirrups shall be of 6 mm dia round MS bars 20 cms cetre to centre.
  • 09 Nos. Stirrups for 1.6mtrs. pole
  • 10 Nos. Stirrups for 1.8mtrs. pole
  • 11 Nos. Stirrups for 2.0mtrs. pole
  • 12 Nos. Stirrups for 2.3mtrs. pole
  • 13 Nos. Stirrups for 2.45mtrs. pole

2. Hooks for fixing barbed wire:

Hooks shall be made of 6 mm dia MS bar Hooks 5 Nos. be provided for fixing barbed wire in 1.6/1.8 mt. long poles. 6 Nos. hooks be provided for fixing barbed wire in 2.0 mt. long poles. 7 Nos. hooks be provided for fixing barbed wire in 2.3/2.45 mt. long poles. Top hook should be provided 100mm below the top of pole and bottom hook should be provided 500 mm above the bottom of the pole. The central distance between the top and bottom hooks shall be equally divided to fix remaining hooks.

3. Dimensions: -

(a) Section of Poles for size 1.6 mtrs., 1.8 mtrs., 2.0 mtrs, 2.3 mtrs. as given under:-

  • i) Bottom : 10 cms x 10 cms, square
  • ii) Top : 8 cms x 8 cms. square.

(b) Section of Pole for size 2.45 mtrs. shall be as given under:-

  • i) Bottom: 15cmx15cm square
  • ii) Top 10cmsx10cms square

(B) BEND TYPE

These are further classified into two types Type-I & Type-II

TYPE-I

1. Reinforcement:

  • i) Main vertical bars: 4 Nos. of 8 mm dia round MS bars.
  • ii) Stirrups: 6mm dia round M S bars not more than 25cm centre to centre (13 Nos.)

2. Hooks for fixing barbed wire:

12 nos. hooks be provided for fixing barbed wire in each fencing pole. Top hook should be provided 50mm below the top of pole and bottom hook should be provided 650mm above the bottom of the pole. Hooks shall be provided at equidistance.

3. Dimensions:

  • Height of vertical (straight) column : 2.45 mtrs.
  • Length of taper column : 45 cm
  • Angle between vertical column and taper column : 45 degree
  • Cross Section of Pole: At bottom end 17x17cm
  • At top (where the taper column start : 13 x 13cm
  • At Top end : 10x 10 cm.

TYPE-II

1. Reinforcement:

  • i) Main vertical bars: 4 Nos. of 10 mm dia round MS bars.
  • ii) Stirrups: 6mm dia round M S bars not more than 15cm centre to centre (25 Nos.)

2. Hooks for fixing barbed wire:

16 nos. Hooks be provided for fixing barbed wire in each fencing pole. Top hook should be provided 100 mm below the top of pole and bottom hook should be provided 750 mm above the bottom of the pole. Hooks shall be provided at equidistance.

3. Dimensions:

  • Height of vertical (straight) column: 03 mtrs.
  • Length of taper column : 75 cm
  • Angle between vertical column and taper column: 45 degree
  • Cross Section of Pole: At bottom end 15x15 cm
  • At top (where the taper column start : 10 x 10 cm
  • At Top end : 7.5x 7.5 cm.

General Requirements for both types of poles: -

  • a. Cement Concrete Mix :
  • Cement concrete to be used having the mix of ratio 1:2:4 (cement : sand : metal or coarse aggregate). with 12.5 mm nominal size coarse aggregate. Sand used should be free from clay & salt. Concrete Mix shall be conforming to Grade M-15 of IS:456:2000 (with upto date amendments).
  • b. Manufacturing:
  • In order to ensure desired compressive strength, RCC fencing poles should be compacted with the help of plat form vibrator. Surface shall be uniform and free from voids. The concrete cover over the reinforcement shall not be less than 15mms.

Source: https://www.mauryagroup.in/rcc-fencing-poles.html↗ ↗

ISI standard

ISI standard for fencing pole↗

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