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Saturday, April 25, 2015

Unit of Goods



01.Brick                                   – Nos
02.Sand                                    – Cft
03.Port-land cement                 – Bag(50Kg)
04.Rod-Deformed bar              – Kg
05.PVC Coduit /Pipe               – Rft/Lbs/Kg
06.PVC And UPVC                 – Rft/Kg/PCS
07.CI, PVC, UPVC Fittings     – Nos/Pcs
08.G.I. Pipe                               - Rft/Pcs
09.G.I. Fittings                          – Nos/Pcs.
10.Pollythene                            – R0ll/Lbs
11.Chatt/Hessian cloth              – Roll/Yrd/Sft
12.Jute rope/Jute tape                – Kg/Roll
13.Door clamp                           – Kg/Pcs
14.Door frame                            – Cft/Rft/Nos
15.Bamboo                                 - Nos/Rft
16.Wood                                     – Cft
17.Electric cable/Wire     –Coil(Rft/Yrd/Meter)
18.Steel box                                – Nos
19.Safety net                                 – Sft/Kg
20 Tiles/Granete                         – Sft/Pcs
21.M.S. Sheet/C.I. Sheet            – Sft/Kg/Boundle
22.M.S. Angle/Flat bar               - Kg/Rft
23.Steel Shutter                           – Sft/Rft/Kg
24.Nut Bolt/Washer                    – Kg/Pcs.
25.Turn Bolt                                – Nos/Kg

Ad Code Sample

Example showing recommended ad sizes on a page

Ad code

Example showing recommended ad sizes on a page

Monday, April 20, 2015

Schedule of a Electric work

Example showing recommended ad sizes on a page

Bill No-5, Subsection D : Stations & Buildings
Name of works: Electrical works for Plat form Sheds & Foot Over Bridge.
Sl No. BOQ No Name of works Unit Quantity Rate in Taka Amount in Taka
273 D-3.1(a) Concealed Point Wiring, Light Point nr 275 73.64 20251.00
274 D-3.1(b) Concealed Point Wiring, Fan Point nr 110 73.64 8100.40
276 D-3.2(a) Concealed Circuit / Power Point Wiring, 1C-2x2.5 Sq mm Cable with 2.5 sq mm ECC Wire through 16mm diameter PVC Pipe. Lin m 1800 236.36 425448.00
277 D-3.2(b) Concealed Circuit / Power Point Wiring, 1C-2x4.0 Sq mm Cable with 4.0 sq mm  ECC Wire through 20mm diameter PVC Pipe. Lin m 600 236.36 141816.00
278 D-3.2(c) Concealed Circuit / Power Point Wiring, 1C-2x6.00 Sq mm Cable with 6.0 sq mm  ECC Wire through 25mm diameter PVC Pipe. Lin m 300 291.82 87546.00
281 D-3.3(c)  1C x 4 x 10 Sq mm Cable with 1C-1x10 sq mm  ECC Wire. Lin m 600 539.09 323454.00
282 D-3.3(d)  1C x 4 x 16 Sq mm Cable with 1C-1x16 sq mm ECC Wire. Lin m 600 680.00 408000.00
285 D-3.6(a) Galvanized Iron (GI) Works, 19mm nominal ID Lin m 100 720.91 72091.00
286 D-3.6(b) Galvanized Iron (GI) Works, 25mm nominal ID Lin m 190 1660.00 315400.00
290 D-3.7(d) One Gang Switch nr 22 86.36 1899.92
291 D-3.7(e) Two- Gang Switch nr 41 125.45 5143.45
292 D-3.7(f) Three- Gang Switch nr 57 140.00 7980.00
293 D-3.8 Ceiling Fan, AC Capacitor Type, 1422.4mm Sweep nr 110 2535.45 278899.50
300 D-3.10(f) Distribution Board 250V Grade with 6-32A SP MCB. nr 30 1670.91 50127.30
302 D-3.11(a) Fancy Single Bracket Light Fitting. nr 44 11380.91 500760.04
303 D-3.11(b) 1-4' x 40 Watt Fluorescent Tube. nr 330 799.09 263699.70
307 D-3.11(f) 40/60 Watt Lamp nr 66 1894.55 125040.30
308 D-3.11(g) 100 Watt Lamp nr 55 3445.45 189499.75
310 D-3.11(i) 22 watt Circular Fluorescent Lamp nr 22 1840.00 40480.00
311 D-3.11(j) 30 watt Circular Fluorescent Lamp nr 22 1840.00 40480.00
Grand Total Taka 3306116.36








Sunday, April 19, 2015

Family Video

Some Dafination about soil Mechanics



Total unit weight: Cumulative weight of the solid particles, water and air in the material per unit volume. Note that the air phase is often assumed to be weightless.
Ratio of the volume of voids (containing air, water, or other fluids) in a soil to the total volume of the soil.
is the ratio of the volume of voids to the volume of solid particles in a soil. Void ratio is mathematically related to the porosity.
A measure of the ability of water to flow through the soil, expressed in units of velocity.
The rate of change of volume with effective stress. If the pores are filled with water, then the water must be squeezed out of the pores to allow volumetric compression of the soil; this process is called consolidation.


The shear stress that will cause shear failure.
Liquid limit, plastic limit, and shrinkage limit. These indices are used for estimation of other engineering properties and for soil classification.

Monday, April 13, 2015

Happy New ear

Happy New year to everybody. Today is the day of wanting. We should not memories the passing year about bed day. We hope coming year will earn very good time. we want to earn success in the coming year. I want success and peaceful life for everybody of the world.
Engr M A Razzak
14.04.2015

Tuesday, March 31, 2015

test copy

I'm Engr M A Razzak, my son Kader Pial Cowdhury in front of me.

Monday, March 23, 2015

Sample of a Schedule of Electrical works


Toma Construction & Company Limited     'Annexure-A'

Tongi-Bhairab Bazaar Double Line Project

Bill of Quantities

Bill No-5, Subsection D : Stations & Buildings
Name of works: Electrical works for Plat form Sheds & Foot Over Bridge.
Sl No. BOQ No Name of works   Unit Quantity Rate in Taka Amount in Taka
273 D-3.1(a) Concealed Point Wiring, Light Point nr 275 71.86 19761.50
274 D-3.1(b) Concealed Point Wiring, Fan Point nr 110 71.86 7904.60
276 D-3.2(a) Concealed Circuit / Power Point Wiring, 1C-2x2.5 Sq mm Cable with 2.5 sq mm ECC Wire through 16mm diameter PVC Pipe. Lin m 1800 228.51 411318.00
277 D-3.2(b) Concealed Circuit / Power Point Wiring, 1C-2x4.0 Sq mm Cable with 4.0 sq mm  ECC Wire through 20mm diameter PVC Pipe. Lin m 600 228.51 137106.00
278 D-3.2(c) Concealed Circuit / Power Point Wiring, 1C-2x6.00 Sq mm Cable with 6.0 sq mm  ECC Wire through 25mm diameter PVC Pipe. Lin m 240 282.40 67776.00
281 D-3.3(c)  1C x 4 x 10 Sq mm Cable with 1C-1x10 sq mm  ECC Wire. Lin m 600 521.69 313014.00
282 D-3.3(d)  1C x 4 x 16 Sq mm Cable with 1C-1x16 sq mm ECC Wire. Lin m 600 658.22 394932.00
285 D-3.6(a) Galvanized Iron (GI) Works, 19mm nominal ID Lin m 48 697.74 33491.52
290 D-3.7(d) One Gang Switch   nr 385 83.36 32093.60
291 D-3.7(e) Two-GangSwitch   nr 41 121.44 4979.04
292 D-3.7(f) Three- Gang Switch   nr 39 135.81 5296.59
293 D-3.8 Ceiling Fan, AC Capacitor Type, 1422.4mm Sweep nr 110 2453.96 269935.60
300 D-3.10(f) Distribution Board 250V Grade with 6-32A SP MCB. nr 22 1617.53 35585.66
302 D-3.11(a) Fency Single Bracket Light Fitting. nr 44 11016.57 484729.08
303 D-3.11(b) 1-4' x 40 Watt Fluricent Tube. nr 220 773.19 170101.80
307 D-3.11(f) 40/60 Watt Lamp   nr 66 1833.82 121032.12
308 D-3.11(g) 100 Watt Lamp   nr 44 3334.94 146737.36
    Grand Total Taka 2655794.47









Prepared By





Engr M A Razzak




Site-in-Charge (TBDLRP)




Tuesday, March 3, 2015

Basic Electrical Engineering



Series circuits:

Series circuits are sometimes called current-coupled or daisy chain-coupled. The current in a series circuit goes through every component in the circuit. Therefore, all of the components in a series connection carry the same current. There is only one path in a series circuit in which the current can flow.
A series circuit's main disadvantage or advantage, depending on its intended role in a product's overall design, is that because there is only one path in which its current can flow, opening or breaking a series circuit at any point causes the entire circuit to "open" or stop operating. For example, if even one of the light bulbs in an older-style string of Christmas tree lights burns out or is removed, the entire string becomes inoperable until the bulb is replaced.

Current

I = I_1 = I_2 = \dots = I_n
In a series circuit the current is the same for all elements.

Resistors

The total resistance of resistors in series is equal to the sum of their individual resistances:
This is a diagram of several resistors, connected end to end, with the same amount of current through each.
R_\mathrm{total} = R_1 + R_2 + \cdots + R_n
Electrical conductance presents a reciprocal quantity to resistance. Total conductance of a series circuits of pure resistors, therefore, can be calculated from the following expression:
\frac{1}{G_\mathrm{total}} = \frac{1}{G_1} + \frac{1}{G_2} + \cdots + \frac{1}{G_n}.
For a special case of two resistors in series, the total conductance is equal to:
G_{total} = \frac{G_1 G_2}{G_1+G_2}.

 



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