The following are duct installation cost reference for ductworks installation such as installation of straight ducts and fittings.
For flexible, spiral, and rectangular duct, please click the link VENTILATION DUCT PRICE LIST
For louvers, diffusers, dampers and air grill, please click the link DAMPERS, DIFFUSER, GRILLE AND LOUVER PRICE LIST
Below are the installation man hours for straight duct based on the perimeter dimension of duct and the total area of the duct installed.
For example, you have the following duct to install with dimension, 300mm(height) X 500mm(width) X 10meters(length). The perimeter value of your duct is 1.6 meters, based on the table, the value falls in between of 1.22 and 1.95. For the exact value, you can use interpolation but just to be safe always on your estimation you can use the next higher value which is 1.95. The corresponding value of man hours at 1.95 perimeter for installation is 2.60 hrs per square meter. If you have a total area of 16 sq.m., the total man hours for the installation is 41.6 hrs. If you pay 75Php/hr, the total cost will be Php 3,120.00. To get the actual time for the work to get done, the value 41.6hrs will be divided on how many man-power you have for the installation
| DIMENSIONS | MANHOURS | ||||
|---|---|---|---|---|---|
| Duct Perimeter | Manhours for Fabrication | Manhours for Installation | |||
| feet | meter | per sq. ft. | per sq.m | per sq. ft. | per sq.m |
| 4 | 1.22 | 0.154 | 1.656 | 0.242 | 2.603 |
| 6.4 | 1.95 | 0.154 | 1.656 | 0.242 | 2.603 |
| 8 | 2.44 | 0.176 | 1.893 | 0.253 | 2.721 |
| 10 | 3.05 | 0.176 | 1.893 | 0.253 | 2.721 |
| 11.2 | 3.41 | 0.176 | 1.893 | 0.264 | 2.840 |
| 12 | 3.66 | 0.187 | 2.011 | 0.286 | 3.076 |
| 14.6 | 4.45 | 0.209 | 2.248 | 0.308 | 3.313 |
| 16 | 4.88 | 0.22 | 2.366 | 0.33 | 3.550 |
| 17 | 5.18 | 0.242 | 2.603 | 0.352 | 3.786 |
| 20 | 6.10 | 0.253 | 2.721 | 0.374 | 4.023 |
| 25 | 7.62 | 0.253 | 2.721 | 0.385 | 4.14 |
| 28.6 | 8.72 | 0.253 | 2.721 | 0.385 | 4.141 |
| 32 | 9.76 | 0.264 | 2.840 | 0.407 | 4.378 |
| 34.5 | 10.52 | 0.264 | 2.840 | 0.407 | 4.378 |
Below are the installation man hours for duct fittings installation. The installation man hours are per piece or per item.
| DIMENSION | MANHOURS | |||||
|---|---|---|---|---|---|---|
| Duct Perimeter | Elbow | Tees | Wyes | Tap-ins | Offset Transition | |
| feet | meter | mnhr/pc | mnhr/pc | mnhr/pc | mnhr/pc | mnhr/pc |
| 4 | 1.22 | 0.297 | 0.462 | 0.528 | 0.297 | 0.385 |
| 6.4 | 1.95 | 0.495 | 0.748 | 0.88 | 0.495 | 0.495 |
| 8 | 2.44 | 0.616 | 0.913 | 1.056 | 0.616 | 0.616 |
| 10 | 3.05 | 0.759 | 1.144 | 1.342 | 0.759 | 0.759 |
| 11.2 | 3.41 | 0.858 | 1.287 | 1.507 | 0.858 | 0.858 |
| 12 | 3.66 | 0.913 | 1.375 | 1.606 | 0.913 | 0.913 |
| 14.6 | 4.45 | 1.1 | 1.65 | 1.936 | 1.1 | 1.1 |
| 16 | 4.88 | 1.221 | 1.815 | 2.134 | 1.221 | 1.221 |
| 17 | 5.18 | 1.287 | 1.936 | 2.266 | 1.287 | 1.287 |
| 20 | 6.10 | 1.518 | 2.277 | 2.662 | 1.518 | 1.518 |
| 25 | 7.62 | 1.903 | 2.86 | 3.322 | 1.903 | 1.903 |
| 28.6 | 8.72 | 2.167 | 3.256 | 3.795 | 2.167 | 2.167 |
| 32 | 9.76 | 2.431 | 3.652 | 4.257 | 2.431 | 2.431 |
| 34.5 | 10.52 | 2.629 | 3.927 | 4.587 | 2.629 | 2.629 |
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The following are man hour reference for ductworks installation such as installation of straight ducts and fittings.For ventilation ducting material price list:- Air Louver, please click the link: AIR LOUVER…