I really can’t understand the content in a bid document

The contractor shall design, supply, and install the fixed fire protection system piping and accessories on all spherical gas cylinders, and provide flange connections two meters above the rainwater and foam systems to enable connection with other components. The contractor must provide a system schematic showing pipe sizes, diagrams, nozzles, foam chambers, etc. The contractor still needs to submit auxiliary hydraulic calculations along with detailed drawings of the conduits, nozzles, foam chambers, etc., for the company’s review and comments prior to the start of construction.

2 meters above grade should mean 2 meters above the ground level, right? It says **it doesn’t seem logical to have two meters above the system** ； Also, translating “reductions” as “simplified diagrams” is not quite appropriate; it should be referred to as “diameter reductions” or “different-sized ends”. :handshake Last edited by lihx_susan on 2008-3-4 18:52 ]

The Contractor shall design, supply, and install the fixed fire protection system piping and accessories on all storage spheres. The Contractor shall provide a flanged interface point, 2 meters above grade, for the deluge and/or foam system to allow connection by other parties. The Contractor shall submit system diagrams showing pipe sizes, reductions, spray nozzles, foam chambers, etc. The Contractor shall also submit all relevant hydraulic calculations, along with detailed drawings of pilot nozzles, spray nozzles, foam chambers, etc., for review and comments by the Company prior to the start of construction. The contractor must provide a system schematic showing pipe sizes, diagrams, nozzles, foam chambers, etc. The contractor still needs to submit auxiliary hydraulic calculations along with detailed drawings of the conduits, nozzles, foam chambers, etc., for the company’s review and comments prior to the start of construction. Based on my own experience, I can offer some analysis: This should refer to the requirements for the fire protection system of a certain spherical tank; generally speaking, it should be a sprinkler system. Storage spheres; ball tanks. Fixed fire protection: The contractor shall provide a flanged interface point, 2 meters above ground level, for the deluge and/or foam systems, so that others can connect to them. The contractor must provide a flanged interface at a height of 2 meters or more for connecting to the fire suppression water and/or foam systems. The original meaning of \"deluge\" is \"flood, heavy rain\", but since this refers to a fire protection system, it seems more appropriate to use fire-fighting water – spray systems are generally connected to fire-fighting water, but in cases where special requirements exist, foam can also be used. Reductions and diameter changes are discussed here in terms of drawing details; I agree with Mu Zi’s opinion regarding supporting hydraulic calculations Students majoring in design should be able to provide the correct name

Fixed: fixed design; Fire protection: fire safety measures; 2 meters above grade: 2 meters above the ground level; Hydraulic calculations: calculations related to hydraulic properties; Supporting: structural support (since it is the contractor who is responsible for the design, and contractors are usually not professional design firms, it is essential to have these calculations so that the owner or a professional hired by the owner can review them)... It seems that the fire protection system in this project is relatively simple, so the owner does not want to spend extra money on hiring a professional design firm to handle the design.

reduction is generally referred to as a reducer

Fixed fire protection system piping refers to the pipes in the fire protection system. Reduction is here taken to mean “diameter reduction”. Supporting hydraulic calculations involve the calculation of water pressure on the supporting surfaces

I think \"supporting\" means \"related\" in this context, referring to all hydraulic calculations related to pipes, tanks, etc. I also made some changes to the way it is expressed; it reads roughly as follows: :) The contractor shall design, supply, and install the fire protection system pipes and accessories for all spherical storage tanks, and provide flange connections at a height of more than 2 meters above the ground level for connection to the (fire water) and/or foam systems. The contractor must provide a system layout showing the pipe sizes, diameter changes, nozzles, foam chambers, etc., and submit all relevant hydraulic calculations along with detailed drawings of the pipes, nozzles, foam chambers, etc., for the company’s review and comments prior to the start of construction.