(MEP) Engineering Service in River's Edge Chicago2018-09-13T21:35:23+00:00

MEP Firm River's Edge Chicago!

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When you’re looking for a dependable MEP Firms in Chicago? The top choice is is NY Engineers. Not only for MEP Firms in Chicago but also Electrical Engineering and Protection Engineering near River's Edge Chicago. Call 312 767.6877

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The great majority of builders throughout Medford, NY have come to rely on NY-Engineers.Com for a wide range of engineering services ranging from Mechanical Engineering to Engineering Reports. For this reason property owners in River's Edge Chicago will tell you that if you’re seeking a dependable MEP Engineering firm in River's Edge Chicago, Illinois you need to consider NY Engineers.

A MEP engineer, or mechanical, electrical, plumbing engineer, can be quite a big asset. These engineers can manage a wide array of assisgments. Exactly what do MEP engineers do? Please read on if you would like more information on the duties that they handle.

They Design and Plan Systems: A building will need to have a properly planned electrical system, and a building’s plumbing system needs to be developed by a professional at the same time. The sort of engineer that’s in charge of this planning is an MEP engineer. Planning these kinds of systems is quite complex, which explains why MEP engineers need extensive training. The job which they do is not simple at all. With that said, structures with well-designed plumbing and electrical systems are less susceptible to issues than buildings with badly designed systems.

They Develop Standards and Policies: Together with crafting the systems for any building, it’s the task of MEP engineers to formulate the policies and standards for any building. An MEP pro will work to create benchmarks which are ideal for a building. They may adjust or improve the standards for a building as required.

They Think Of Evaluation Tools: In order to guarantee that the system is operating as planned, a number of evaluation tools will have to be developed. Someone that works as an MEP engineer can have to create the proper assessment tools. If there is a concern using the system, that challenge will be identified and resolved right away.

Precisely what do MEP engineers do? As you have read, these engineers manage many different important jobs. When you take time to discover more about the duties that these particular engineers handle, you’ll have the ability to determine whether or not an engineer like this may be an asset to your organization.

Why You Would Like MEP Firm in River's Edge Chicago if Planning Large Scale Construction Projects

You may not think you need MEP engineering consultants, but you could have some other take on the problem after you read what I have to say. Here is why you could require MEP engineers if they were to take on a considerable construction project. I am not mearly going to give you a few reasons; I’m going to give you quite a few of them.

Building designs throughout River Forest Chicago, ILO, are quite difficult, and you will have to think about plumbing, HVAC and electrical designs. Must I say more? Well, I did claim that I would offer you multiple reasons. There is more than meets the eye when you are designing a building and these two important examples are a good way to lead things off.

A reason why one needs MEP engineers when undertaking a sizeable construction project similarly is related to lighting and electricity. This can be a great time to note that energy maintenance is another reason. An extensive plan for energy saving includes the full building and the way it can be outfitted.

Fire alarms and security are an additional chief reason to use MEP engineers. You are going to desire them to assist you design a strategy to the fire security systems and escape routes. Security and safety are dealt with in many different ways with regards to the style of a building, too.

MEP engineers in Hanson Park Chicago, Illinois, are willing to not simply assist you in the model of a building but take control using the expertise and knowledge necessary to manage this kind of project. Building automation, operational upkeep and value in total design are just a few other reasons why you may want to put MEP engineers on the helm with regards to the big scale construction project you might have planned. If your firm or you would like more information about the MEP Engineering services in River's Edge Chicago, IL by NY Engineers we invite you to stop by at our blog.

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An MEP Engineers’ Guide to Air Dampers

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An air damper is a device that uses valves or plates to stop or regulate the flow of air within a duct, chimney, variable-air-volume (VAV) box, air-handling unit or other similar pieces of equipment. Dampers are also used to stop airflow into unoccupied or unused rooms where air conditioning is not required. In addition, MEP engineers install dampers as protection measures against smoke or fire.

An air damper is a complex mechanism with many moving elements. Their main components are the blades, which adjust their position to control airflow. In addition, dampers include frames, linkages, axles, bearings, seals, blade pins, actuating motors, flanging, jackshafts, and sleeves, among other components.

Types of Air Dampers

Based on their construction, air dampers can be classified into parallel blade and opposed blade dampers. Each configuration has unique performance features and is intended for different applications.

1) Parallel Blade Dampers

In this type of air damper, blades rotate in the same direction, parallel to one another. The parallel blade configuration is typically used when the damper operates in two positions: open or closed.

These dampers redirect air flow along their first few degrees of rotation, as they move from fully open to closed, and therefore control is achieved along the first 20-30% of movement.  Rather than modulating air streams, these dampers change their direction, and that is the main reason why they are preferred for open-close operation or fixed flow control.

Parallel blade dampers are typically used by MEP engineers in applications where the damper represents a major portion of the overall system pressure loss. They should not be used upstream of critical components due to their uneven airflow.

2) Opposed Blade Dampers

In this type of air damper, blades rotate in opposite directions to one another, modulating airflow. These air dampers are mostly used when the system requires airflow control rather than open-close operation, but they can also be used for on-off service.

Opposed blade dampers are typically used in the following applications:

  1. When the damper doesn’t represent a major portion of the overall system pressure loss.
  2. Systems that are required to maintain an even airflow downstream from the damper.
  3. Ducted terminals.

Classification of Dampers by Control Method and Application

Air dampers can also be classified based on the control method they deploy and their intended application. Based on their control method, dampers can be either automatic or manual:

  • Automatic dampers are similar to automatic control valves in terms of functioning.
  • Manual dampers are adjusted manually depending on the required airflow, as implied by their name.

Dampers can also be classified based on their application, and the following are some of the main types:

  • Balancing dampers (volume dampers)
  • Face and bypass dampers
  • Fire dampers
  • Smoke dampers
  • Combined fire and smoke dampers
  • Gravity dampers (backdraft or barometric)
  • Mixing dampers
  • Multi-zone dampers
  • Round dampers
  • VAV boxes (variable-air-volume)

Note how dampers are not only used for air balancing in ventilation systems, but also for safety in fire protection applications.

Why Are MEP Engineers Concerned About Dampers?

Air dampers are an important element of MEP engineering design since their use is subject to code requirements. They should also be designed to minimize energy losses, through the prevention of heat exchange across them when in the closed position, all while maintaining the required pressure conditions in different spaces.

Air dampers are subject to the following codes and standards:

  1. National Fire Protection Association (NFPA) standards:
    1. NFPA 90A Standard for the Installation of Air-Conditioning and Ventilating Systems
    2. NFPA 92A Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences
    3. NFPA 101 Life Safety Code
  2. Underwriters Laboratories (UL) standards:
    1. UL 555 Standard for Fire Dampers
    2. UL 555S Standard for Smoke Dampers
    3. UL 555C Standard for Ceiling Dampers

The main locations where air dampers are required to meet code are the following: stair enclosures, elevator shafts, common corridors, mechanical rooms, fire-rated walls, exterior building walls, shaft enclosures, horizontal assemblies, and duct and transfer openings.

Air Dampers in Fire Protection Applications

The three main types of dampers used in fire protection applications are fire dampers, smoke dampers, and combined fire/smoke dampers. This section provides an overview of each type and its applications.

Fire Dampers

Fire dampers interrupt airflow through the duct automatically, restricting the passage of flames. To accomplish their function, these dampers are installed in ducts that cross fire-rated assemblies or fire-rated walls. They can be installed in both horizontal and vertical ductwork and can be of both curtain type and multi-blade type.

A fire damper has the following components:

  1. Sleeve
  2. Curtain blade
  3. Break-away joints
  4. Fusible link
  5. Access door to inspect the fire damper

All fire dampers are installed in the open position, with a fusible link. When the temperature in the ductwork exceeds a specified value, the fusible link melts and the damper gets shut off, either by gravity or by a spring. To guarantee they accomplish their function, fire dampers need to pass various tests.

Fire damper selection is based on three main factors: fire resistance rating, temperature, and operating range. Fire rating depends on the time span for which a damper will withstand the heat associated with a fire. For walls, partitions, and barriers with fire resistance rating of less than 3 hours, 1.5-hour fire dampers are used. For fire barriers rated for 3 hours or more, 3-hour fire dampers are used. This procedure ensures building code compliance, which requires that the fire resistance rating is maintained across the full area of walls, partitions, and floors.

The exceptions for the use of fire dampers are parking garages, kitchen exhaust ductwork, and dryer exhaust ductwork.

Smoke Dampers

Smoke dampers prevent smoke from spreading in HVAC systems that are designed to shut down automatically in case of fire, and they only have two positions: open and closed. These dampers are installed in a slotted duct section – they are installed whenever a duct penetrates a smoke partition or smoke barrier inside the building. They can be applied in passive smoke control systems, or as part of an engineered smoke control solution.

In passive systems, smoke dampers close and prevent the circulation of air and smoke through ducts or ventilation openings that cross a smoke barrier. On the other hand, in engineered smoke control systems, the spread of smoke is controlled by the building HVAC system or by dedicated fans that create pressure differences. Smoke dampers may be controlled by heat sensors, smoke sensors, fire alarms, or any other method that meets the design intent.

A smoke damper has the following components:

  1. Sleeve
  2. Smoke blades (parallel)
  3. Break-away joints
  4. Duct-mounted smoke detector
  5. Damper actuator
  6. Access door

It is important to decide which ratings are required for UL Listed fire dampers.

  • The SD-1320 and SD-1330 smoke dampers are UL/cUL leakage rated dampers, listed under the latest UL 555S standard.
  • SD-1620 smoke dampers meet UL Class II. Leakage is less than 20 cfm per square foot at 4 inch w.g. and at 350°F (177°C).
  • SD-1630 smoke dampers meet UL Class I. Leakage is less than 8 cfm per square foot at 4 inch w.g. and at 350°F (177°C).

Fire and Smoke Damper (Combined)

As implied by its name, this type of damper is a combination of a fire damper and a smoke damper, and it is installed in ducts that cross partitions rated as both fire and smoke barriers. This type of damper must be qualified under both UL555 and UL555S.

Selection of a combined fire and smoke damper depends upon 4 factors: fire resistance rating, leakage rating, temperature and operational ratings.

Combined fire and smoke damper applications include walls, floors, partitions required by the local building code.

For walls, partitions, and barriers with fire resistance rating of less than 3 hours, 1.5-hour fire/smoke dampers are used. For fire barriers rated for 3 hours or more, 3-hour fire/smoke dampers are used. Designers are usually suggested to pick a very low leakage category.

Conclusion

Air dampers have a wide range of applications, ranging from airflow modulation in normal operating conditions to providing a reliable barrier against smoke or fire during emergencies. However, code compliance is an important aspect to consider regardless of the application, so working with qualified MEP engineers is highly recommended.

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