HVAC control system

A HVAC control system is a computerized control system for climate control in buildings. Stand alone control devices may be pneumatic or electronic. Some may have microprocessors, but to be considered a "control system" for the context of this article, computerized and networked are expected requirements. HVAC stands for heating, ventilation, air-conditioning. Often, these integrate fire, security, and lighting controls into one system. These systems typically use one or more central controllers to command and monitor the remote terminal unit controllers, and they communicate with one or more personal computers that are used as the operator interface. These control systems are typically used on large commercial and industrial buildings to allow central control of many HVAC units around the building(s). The latest systems use ethernet for communications between central controllers--allowing remote access from a web browser.

Wire Mesh - Hardware and Industrial Cloth,,Hardware and Industrial Cloth Comparisons

Hardware and Industrial Cloth, available in a welded or woven construction, is widely used in the farming industry and serves many other applications due to its corrosion resistant and lightweight characteristics.
Product Finishes
Hardware and Industrial cloth can be hot-dip galvanized or pre-galvanized woven or welded wire mesh. Hardware cloth is a light gauge (usually between 2 and 8 mesh).

Hardware and Industrial Cloth Comparisons
Welded Hardware and Industrial cloth holds its shape better when cut because the weld holds the wires in place. For a given size, woven wire mesh is usually more flexible.

Pre-galvanized wire mesh is the most economical but is more prone to corrosion because the galvanized surface is burned off where the wires are welded. However, pre-galvanized is more attractive in appearance than hot-dip galvanized.

Hardware and Industrial cloth is not recommended for animal cages because the galvanizing is toxic if ingested.

Wire Mesh - Square Welded - Weldmesh,Wire Mesh - Square Welded

Wire Mesh - Square Weave
Woven is the most popular wire mesh. It is available in a wide range of meshes, weaves and opening sizes.
What is Woven Wire Mesh?
Woven wire mesh is cloth made from wire strands. The wires that make up wire mesh run parallel to the width of the roll (cross wires) and parallel to the length (line wires). The cross and line wires are interwoven. That is, the wires cross over and under each other. Wire Mesh can be woven in a number of different styles depending on the material type, wire diameter, and opening size (see weave styles). Woven wire mesh is available in rolls, sheets or panels, and cut-to-size.

Welded wire mesh typically has larger openings than woven wire mesh. With the wire strands welded at each intersection, welded wire mesh is more cabable of maintaining its shape when stressed.
What is Welded Wire Mesh?
In welded wire mesh, the wires that run parallel to the width of the roll are placed on top of the wires running parallel to the length. Then, the wires are welded where they intersect.

Manufacture Steel Weld Mesh used as a matting bars for concrete floating floors

The steel mesh is used as a matting bars for concrete floating floors, with the specifications as follows : 100mm x 100mm square opening, 10 to 14 mm dia. round rod and with pvc coating.
It is used in Warehouse racking and industrial shelving. UPS got to be the world's largest package delivery company one parcel at a time. Their operation specializes in huge numbers of small orders. Beaver's warehouse fit the company's needs perfectly: a system for non-palletized cartons.
Structural steel aisle guides and full-width structural steel entry guides protect the frames. These features also help guide the warehouse operator into the aisles. The system also features a custom coloured racking and beam location labeling system. It works, and it looks great.
General Auto Parts

When General Auto Parts began their first physical move in 17 years, they turned to Beaver for complete project management and guaranteed results.

The new facility is divided into four distinct areas, each one engineered to maximize picking efficiency and reduce forklift travel.

Manufacture Steel Flooring Weld Mesh

Weldmesh® is one of the most versatile of all Wire Cloth products. Weldmesh® is a welded steel wire mesh manufactured from bright drawn mild steel wire, electrically welded at all intersections.

Wire Mesh Weldmesh® Product Description
Weldmesh® is produced with a copper washed finish and can be hot dipped galvanized after manufacture. Because it is welded, it can be cut or bent to the shape required without the wires falling apart and forms its selvage when cut flush.

Weldmesh® is available in panels in a variety of wire diameters and meshes up to 3 inches.

The physical properties of the wires used are rigidly controlled to produce a welded mesh with a maximum weld strength.
Wire Mesh Weldmesh® Product Features
· Versatile
· High strength
· Easy cutting, shearing
· Flush edge finish
· All intersections welded
· Solid construction
· Wires hold together
· Easy handling
· Cutouts made easily
Wire Mesh Weldmesh® Product Applications
· Cages · Panel Inserts
· Lockers · Safety Barriers
· Security Guards · Racking/Shelving
· Pallets · Containers
· Grilles · Litter Bins
· Bins/Baskets · Partitions
· Machine Guards · Ceilings
· Fencing · Girder Lagging
· Window Guards · Trailer Sides
· Gates · Stairway Guards
· Catwalk Guards · Balustrading

HVAC From Wikipedia, the free encyclopedia

HVAC (pronounced either "H-V-A-C" or "H-vak") is an initialism or acronym that stands for "heating, ventilating, and air conditioning". HVAC is sometimes referred to as climate control and is particularly important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where humidity and temperature must all be closely regulated whilst maintaining safe and healthy conditions within. In certain regions (e.g., UK) the term "Building Services" is also used, but may also include plumbing and electrical systems. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as HACR (such as the designation of HACR-rated circuit breakers).

Heating, ventilating, and air conditioning is based on the principles of thermodynamics, fluid mechanics, and heat transfer, and on inventions and discoveries made by Michael Faraday, Willis Carrier, Reuben Trane, James Joule, William Rankine, Sadi Carnot, and many others. The invention of the components of HVAC systems went hand-in-hand with the industrial revolution, and new methods of modernization, higher efficiency, and system control are constantly introduced by companies and inventors all over the world.

The three functions of heating, ventilating, and air-conditioning are closely interrelated. All seek to provide thermal comfort, acceptable indoor air quality, and reasonable installation, operation, and maintenance costs. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces. How air is delivered to, and removed from spaces is known as room air distribution.[1]

In modern buildings the design, installation, and control systems of these functions are integrated into one or more HVAC systems. For very small buildings, contractors normally "size" and select HVAC systems and equipment. For larger buildings where required by law, "building services" designers and engineers, such as mechanical, architectural, or building services engineers analyze, design, and specify the HVAC systems, and specialty mechanical contractors build and commission them. In all buildings, building permits and code-compliance inspections of the installations are the norm.

The HVAC industry is a worldwide enterprise, with career opportunities including operation and maintenance, system design and construction, equipment manufacturing and sales, and in education and research. The HVAC industry had been historically regulated by the manufacturers of HVAC equipment, but Regulating and Standards organizations such as ASHRAE, SMACNA, ACCA, Uniform Mechanical Code, International Mechanical Code, and AMCA have been established to support the industry and encourage high standards and achievement.

stainless steel mesh floor. steel mesh floor panels

pen steel floor grating may be used for many industrial purposes such as stair treads, cat-walks, drain covers and floor grating. Grating comes with a smooth-surface grating, or serrated-surface "Safety" grating. Grating is available in standard mesh types and closed mesh types.

Please call for sizing and additional information.Open Steel Floor Grating
Bearing
Bars Type
19W4 Type
19W2 Type
15W4 Type
15W2
3/4 x 1/8 4.0 4.6 4.8 5.5
3/4 x 3/16 5.6 6.3 6.9 7.5
1 x 1/8 5.1 5.7 6.2 6.9
1 x 3/16 7.3 8.0 9.0 9.6
1 1/4 x 1/8 6.1 6.8 7.5 8.2
1 1/4 x 3/16 8.9 9.6 11.1 11.7
1 1/2 x 1/8 7.3 7.9 9.0 9.6
1 1/2 x 3/16 10.6 11.2 13.1 13.8
1 3/4 x 3/16 12.2 12.9 15.2 15.8
2 x 3/16 13.9 14.5 17.3 17.9
2 1/4 x 3/16 15.4 16.1 19.2 19.9
2 1/2 x 3/16 17.1 17.7 21.3 22.0

Steel Grid on Floor

The use of wire mesh floor heating systems to store heat developed from low-cost electrical energy during off-peak hours was investigated for large resource industries. These systems have the double function of heating and reinforcing. As current increases in the steel magnetic wire, resistance decreases due to skin effect. Current follows the shortest path along the longitudinal wires with relatively little flow in the transverse wires. The resistance of the mesh electrical leads must be low to avoid making them heaters. The mesh heat output is regulated by voltage which varies directly as circuit length.

Manufacture Steel Flooring Welded Mesh Specifications

How to Specify:
This information is designed to conform to the requirements of the Three-Part Section Format of the CSI/CSC MasterFormat for construction specifications. These specifications are intended to be used as a guideline for architects and engineers as they establish the requirements for a particular project, and may be modified by them as deemed appropriate.

PART 1: GENERAL

1.1 Scope of Work
The contractor shall provide all labor, materials, equipment and incidentals as shown and specified and are required to furnish and install grating, stair treads and supports.

1.2 Quality Assurance
A. Comply with applicable provisions and recommendations of the following: NAAMM Metal Bar Grating Manuals designated ANSI/NAAMM MBG 531 for Steel, Stainless Steel and Aluminum Gratings and Stair Treads.
B. The steel used in the Bearing Bars shall be of rectangular section and conform to ASTM A569 Hot Rolled Carbon Steel Sheet and Strip. The Cross Bars shall be of ASTM A510 Carbon Steel Rods and Course Round Wire.
C. No substitution of materials will be accepted unless they are submitted for review and the Architect/Engineer approves their use.

1.3 Submittals
A. The contractor shall submit to the owner or its representative, for approval, shop drawings for fabrication and erection of the work. Included shall be plans, elevations, sections and details of the work.
B. The contractor shall submit the manufacturer’s specifications, load tables, anchor details and standard installation details.
C. The contractor may be required to take field dimensions to verify “as built” conditions to ensure proper fit of grating.

PART 2: PRODUCT

2.1 General
A. Grating shall be Amico Standard Welded Type “W” 19W4 resistance welded grating as manufactured by Alabama Metal Industries Corp. or approved equal.
B. Bearing bars: Rectangular steel bars of an appropriate depth and thickness for the required load, on 1 3/16” centers. Other available centers are; (15/16”; 13/16”; 11/16”; 5/8”; and 1/2”) which may be selected at the discretion of the Architect/Engineer.
C. Cross Bars: Twisted wire rod, at 4” on center, resistance welded to the bearing bars and at right angles to them. Other available center is 2” as may be selected by the Architect/Engineer.
D. Surface: The bearing bars shall have a smooth top surface unless the Architect/Engineer determines the need for a serrated surface.
E. Loading: At a uniform load of 100 pounds per square foot, deflection shall not exceed ¼ inch over the required span.
F. Finish: Manufacturers standard shop coat of black paint or Galvanized as required by Architect/Engineer.


PART 3: EXECUTION

3.1 Shop Fabrication
A. All required cutting, fitting and welding shall be performed in the manufacturers shop in accordance with the approved shop drawings and shall be in compliance with the NAAMM Metal Bar Grating Manual tolerances and welding standards.
B. All cutouts to clear obstructions shall have a recommended clearance of 1 inch. When banding and toe plates are required they shall be welded to the grating in accordance with NAAMM standards.
C. The finish coating, paint or galvanizing shall be applied after all of the required fabrication is complete.

3.2 Installation
A. The grating shall be received at the job site by the contractor, unloaded and protected from damage prior to the requirement for it to be installed.
B. The installing contractor shall prepare the site for installation, determining that deviations from the approved drawings are corrected prior to grating placement.
C. Grating shall be installed in accordance with the approved shop drawings and the installation clearances called for in the NAAMM Metal Bar Grating Manual, including the use of the prescribed anchor system.
D. Pipe penetrations of 4” or less shall be cut in the field. When installed, Grating Cross Bars shall be in alignment.

Steel Flooring Welded Mesh Specifications

Specifications
Security Cage Frame: 1 1/4" x 1 1/4" x 12 gauge angle reinforced mild steel.
Security Cage Stiffener: 2 units 3/4" x 1/8" Flats
Security Cage Mesh: 2" x 2" x 10 gauge Welded or Woven Wire
Security Cage Posts: 2" x 2", 16 gauge tubing
Security Cage Gates: Sliding or Hinged Door
Floor Clearance: 3" or as specified.
Security Cage Finish: Grey Powder Coat Paint
Security Cage Standard Heights: 8', 10', 12', and up to 24' tall

Security Cages Wire Mesh

Security Cages Wire Mesh Partitions are perfect for most Tool Room, Stock Rooms, Departmental Divisions and other restricted areas. Security Cages Wire Mesh Partitions can also be custom made to order by our design engineers to fit any situation.

Security Cages Wire Mesh Partitions non-bearing panels are North American standard size, and are built rugged to withstand tough punishment. Security Cages Wire Mesh Partitions panels are interchangeable and can be rapidly adapted to any need. Our Security Cages Wire Mesh Partitions allow for maximum air circulation. Diffuses lighting for better illumination and won't obstruct fire hose stream.

Security Cages Wire Mesh Partitions are the ideal solution for any secure environment. Panels, doors, and service windows can be arranged in any combination. They are attractive, economical, quick to install, and permit expansion at any time.

Manufacture Steel Flooring Weld Mesh

Products & Applications
Steel Flooring Products (SFP) supply a complete range of made to measure flat bar flooring and associated products such as: Spiral Staircases  Straight Staircases  Ramps  Ladders  Fencing Furniture  Duct Covers Security Grills  Ventilation Panels  Entrance Mats   Hand Railing
Roof Safety Accessories
Some products are delivered ready to fit, are held in stock ex. Sweden and can be delivered within a week or so. 
The range of products provided by SFP covers a range of applications; please contact us today to discuss your requirements.

Welcome to steel flooring

SFP (Steel Flooring Products) supplies a complete range of open bar grating to suit industrial and domestic needs in many different mesh sizes, thicknesses and bar depths.

SFP - Main Product Range :
- Walkways 
- Platforms 
- Spiral and Straight Staircases 
- Wheelchair Ramps 
- Car Park Ventilation Panels 
- Industrial Ladders 
- Entrance Matting 
- Industrial Duct Covers and matching frames 
- Security Grills