If you don't want to wait for dry spots to appear in your lawn, there is a short-cut way to check the adjustment and coverage uniformity of your sprinklers. Place identical-size cups, more or less evenly spaced, throughout the area watered. The cups should be between 5 and 10 feet (1,5m to 3m) from each other. Keep the cups at least 3 feet (1m) from any sprinkler heads, if they are closer than that to a sprinkler you will get inaccurate results, also keep the cups at least 12" from the edge of sidewalks, curbs, patios, or other paved surfaces. Disposable plastic or foam cups work good but tend to get knocked over by the water stream. Here's a trick- place a stake made from a piece of stiff wire (ie; a wire coat-hanger) next to each cup and use a couple of rubber bands or masking tape to strap the cup to the stake. Run the sprinklers for a few minutes so that the cups are at least 1/4 full, if you have rotors the slowest moving one should make at least 5 passes over the cups. Now compare how much water is in the cups. When the sprinklers are properly adjusted each cup should have about the same amount of water in it. Be warned, it is not always possible to get it perfect if there is an underlying design problem with the sprinkler system. If you want to try to fix the design problem, try creating a new design following the method in the . Then compare the optimal design you just created with what is actually installed. You may see some possible ideas for improving the system.
How much do you know about fire sprinkler systems? If you are a business or a building owner, an architect, or a member of the construction industry, you may be interested in some of these commonly asked questions on sprinkler protection. Explore with us sprinkler [...]
Standard external dimensions for containers are width of 8', height of 8' 6" or 9' 6" (High Cube), and lengths of 20', 40', 45' (deduct 4" from width, 9" from height and 7" to 9" from length to determine inside demensions).
To the seller, direct shipping describes both the process and an inventory/sales strategy, however, the supplier will frequently just use the term "drop ship" to describe the process whereby he is shipping the product to an address other than that of his customer (the business that is paying him for the product).
Like a conventional system, the address system consists of one or more circuits that radiate throughout the space or building. Also, like standard systems, one or more alarm initiating devices may be located along these circuits. The major difference between system types involves the way in which each device is monitored. In an addressable system, each initiating device (automatic detector, manual station, sprinkler waterflow switch, etc.) is given a specific identification or "address". This address is correspondingly programmed into the control panel's memory with information such as the type of device, its location, and specific response details such as which alarm devices are to be activated.
Sprinkler System Components and Operation
Sprinkler systems are essentially a series of water pipes that are supplied by a reliable water supply. At selected intervals along these pipes are independent, heat activated valves known as sprinkler heads. It is the sprinkler that is responsible for water distribution onto the fire. Most sprinkler systems also include an alarm to alert occupants and emergency forces when sprinkler activation (fire) occurs.
Conventional systems may also be inherently labor intensive and expensive to maintain. Each detection device may require some form of operational test to verify it is in working condition. Smoke detectors must be periodically removed, cleaned, and recalibrated to prevent improper operation. With a conventional system, there is no accurate way of determining which detectors are in need of servicing. Consequently, each detector must be removed and serviced, which can be a time consuming, labor intensive, and costly endeavor. If a fault occurs, the "trouble" indication only states that the circuit has failed, but does not specifically state where the problem is occurring. Subsequently, technicians must survey the entire circuit to identify the problem.
The advantage of conventional systems is that they are relatively simple for small to intermediate size buildings. Servicing does not require a large amount of specialized training.
NFPA’s Fire Protection Research Foundation (FPRF) initiated a project to determine the impact of sloped ceilings on the protection of storage with ceiling slopes steeper than 2-in-12 (equivalent to 9.5 degrees). As part of this effort, FM Global was tasked to conduct fire simulations to [...]
The most important application when using extended coverage heads is based on the recent testing using the EC-25 sprinklers. EC-25 is a sprinkler head, which is a subcategory of the CMDA and CMSA sprinkler system in that it uses standard densities. What makes the system unique is that the application of the EC-25 allows for the use of solid shelving without the need for in-rack sprinklers (sprinklers installed in the middle of the racks).
The values in the table above are rough equivalents. While the Micron is a standard metric measurement, the term Mesh is rather subjective, especially for values over 300. For example, I've seen both 500 mesh and 700 mesh screens that have equal filtration, that is, they both filter out particles down to 30 microns in size. The problem is related to the size of wire from which the screen is manufactured. The mesh designation is based on the number of wires in one linear inch of the screen. So two screens can have the same mesh, but if one is made with thicker wire than the other, the one with thicker wire will have smaller openings between the wires. Therefore, micron is a much more accurate measurement for use in determining the size of particle that can (or can't!) pass through a filter.
A certified court reporter must record the session.Commissioner Dick Schweers, who serves as the fire commission's chairman, said the sprinkler ordinance is meant to keep Estero residents safe."Our charge is to protect property and save lives," Schweers said.In October, Estero fire commissioners signed off on the ordinance that requires all newly built one- and two-family homes within the district to install automatic fire-sprinkler systems.
ESFR sprinklers may eliminate the need for in-rack sprinkler systems in many warehouses, thus reducing the cost of installation and, more importantly, the risk of water damage caused by damage to in-rack sprinklers.