Once the design and drafting are completed, our team of piping engineers can provide you with the material take off services. This helps in the construction cost estimation process.
We offer a helping hand in your Material Take Off (MTO) from the initial stage up to the final stage.
Preliminary MTO: A preliminary MTO is a material take-off very early in the design process when only a limited amount of information is known, and very little detail has been developed. A preliminary MTO is normally done for two reasons. The first is to assist with the early “order-of-magnitude” (+/- 10%) estimate for the overall project. The second reason is to issue early order of magnitude Request for Quote for piping materials.
The preliminary MTO is only possible when there is a Plot Plan that is “Approved” by the Client or has been issued to the client for approval. This is done long before the availability of any detailed 3D design model.
For the preliminary MTO we used a formatted form on which we could indicate the number or amount of material required for each line. On the form, we identify the line number along with the line class. we then look at this line on the P&ID and on the Plot Plan to determine the routing of the pipe. Then in the boxes (on the form) we mark the amount of pipe required for each size required for that line. We take count of the number of fittings required, starting with 90-degree elbows. Then continuing through all the other inline fittings and online fittings. On getting the fittings, we then, take a count of all flanges by on size basis alongside with the valves referencing the P&ID. The high point vents and low point drains would be made last based on an educated guess. This cycle will be repeated.
Secondary MTO: The primary reason for the Secondary MTO is to update quantities for the issue of the actual Purchase orders for piping material. A second reason is to update the project estimate.
The Secondary MTO can only be done when there is significant progress completed on the 3D design model (or other electronic design method). However, it must be done early enough to ensure that the procurement (purchase and delivery) of the piping material to the field will fit the overall project schedule.
Final MTO: The final MTO is done first to identify any item added late in the project or anything that was missed on the Preliminary or Secondary MTO’s. Other reason for the Final MTO is to get a fix on the final job costs. The Final MTO is done when the last Isometric has been issued.