【How to Estimate Project Materials Guesswork Style】 – Pipes Section
Thread Content
Starting from the project initiation phase, in the early stages it is necessary to estimate specific equipment and materials, taking into account factors such as investment estimates. Equipment is relatively easier to handle in terms of estimation. How are pipes estimated when there are specific tag numbers? Is it just a guess? Could there be too big of differences? There’s lively discussion in the group; let’s start a series here and welcome everyone to participate in the discussions. Today’s topic is how to estimate the quantity and specifications of pipeline materials. Please share your thoughts –－－－－－－－－－－－－－－－－－－－－－－－－－ The various sections in the leisure area invite everyone to contribute their insights. [Travel Section]: Share the beautiful scenery from different places; everyone is welcome to participate. [Haichuan Chemicals: Spring Has Arrived]: Share related events. [Food Section]: Post endless photos of delicious foods; it’s a topic related to the kitchens of Haichuan Chemicals employees. [Calligraphy and Painting Section]: A corner for those who are interested in calligraphy and painting art. [Poetry and Literature Section]: We’re launching the “Haichuan Movies Guessing Game” – everyone is welcome to take part. Posting is a way to share, while upvoting shows support
This is about discussing how to estimate the materials and pipes at this stage of the design
For project engineering, cost estimates are generally prepared during the feasibility study and basic design phases. For the estimation of pipeline materials, during the feasibility study phase, it is best to refer to the quantities from previously completed projects; if such data is not available, an approximate estimate of the pipe quantities should be made based on the PID and the preliminary equipment layout. Special attention must be paid to large-diameter pipes as well as those made from expensive materials. During the preliminary design phase, it is best to use projects that have been designed before. If there are no such projects, for pipelines made of large-diameter, expensive, and rare materials, it is necessary to prepare piping layout diagrams and equipment arrangement diagrams; once these are ready, coefficients can be determined based on them. The valve will be controlled based on the PID value. In short, one feels unsure the first time they do it, but becomes confident when doing similar tasks. No matter how it is estimated, the estimate for the basic design must cover the exact construction volume indicated in the construction drawings. Otherwise, the consequences will be severe. (Additional amount added midway on the first visit)
Do you mean it’s better to overestimate rather than underestimate? ? ? No matter how it is estimated, the estimate for the basic design must cover the exact construction volume indicated in the construction drawings. Otherwise, the consequences will be severe. (Additional amount added midway on the first visit)
What was said on the 4th floor is very accurate; during the feasibility study phase, estimates are often made based on a certain percentage of the equipment costs. Such as 20-30%, based on big data statistics