Hi Span Ltd

  • Ayton Road
  • Wymondham
  • Norfolk
  • United Kingdom
  • NR18 0RD (map)

  • Tel: 01953 603081
  • Fax: 01953 607842
  • Website: www.hi-span.com

Contacts

  • Ben Beaugeard, Managing Director
  •  
  • Number of Employees: 21 - 100

Hi-Span Cold Rolled Products have been specifically designed for use within most types of buildings as secondary supports for cladding materials.

Hi-Span offers a comprehensive range of Purlins, Rails, C-Channels, Eaves Beams and complimentary accessories.

Significant recent capital investment in the very latest "cutting edge" cold rolling plant has enhanced Hi-Span’s position as one of the UK's leading suppliers of cold rolled products to the construction industry.

Sleeved Purlin System


The Sleeved Purlin System is easily the most popular of the three zed purlin systems available from Hi-Span Purlins achieve a high degree of continuity over the supports by employing connecting sleeves over joints. This means that design bending moments are distributed evenly along the building length, resulting in smaller section sizes and valuable economies achieved.

In the various possible arrangements of single and double span purlins, the Hi-Span sleeved system offers the customer low material costs, practical on-site advantages during erection, and excellent building performance thereafter.

Double Span Joint Arrangement


Double Span Joint Arrangement

Double Span Joint Arrangement. This system combines single and double span purlins with their joints staggered and sleeved. The provision of a sleeve at the unjointed connections over the penultimate support is required.

Single Span Joint Arrangement


Single Span Joint Arrangement. Apart from the penultimate support this system has sleeves at alternate positions. Purlins must be continuous over a minimum of two spans using a sleeve, in order to create an end bay situation. (Sleeve arrangement as above, using single span purlins).

Standard & Non Standard Punching Patterns


Standard & Non Standard Punching Patterns

Standard Punching Patterns.
These layouts do not imply that all sections are suitable.

Non Standard Punching Patterns.
Additional holes on the standard punchlines will be made as detailed. Non standard punchlines can be incorporated at no extra charge.

Mezzanine Floor Systems


Mezzanine Floor Systems

Mezzanine Floor Beams
Hi-Span C-Channels are a comprehensive range of channels for a diversity of applications. Primarily for use within mezzanine floors, C-Channel sections can also be applied in many other circumstances such as door framing, roof trimming, window trimming, brickwork restraints, parapet rails and side rails.

The mezzanine floor beam depths of 127, 220, 270, and 290mm are all catered for within the range, together with channel depths of 150, 170, 205, 230, 255, 305 and 350mm, which are fully compatible with our 'Z' purlin and rail sections. While mezzanine floor beams are normally punched with 18 diameter holes as standard, 14 diameter holes are also available in these sections, together with the option of counterformed holes.

Single Span Design


Single Span Design

The single span design is more commonly used than the double span design due to floor depth restrictions. Please ensure that the holes in the standard MFB cleat projects far enough beyond the flange of the hot rolled member to provide adequate fixing to the C-Channel. Non standard cleats are available.

Double Span Design


Double Span Design

The double span design is used when there is no depth restrictions within the floor zone. The benefit of a continuous member is reduced deflections, which in turn can reduce the sections size and therefore cost. Standard purlin cleats can be used for this system, please Click Here for Details.

Threaded Sag Bars


Threaded Sag Bars

Restraint Requirements
As the bottom flange of the C-Channel is usually unrestrained we recommend that a Hi-Span tubular sag rod is fitted. Where possible the channel should face toe to toe with the restraint situated in the lower gauge line holes. (Typically spans less than 3.50m do not require restraints).

Threaded Sag Bars
These 19mm diameter flow-coat galvanised and lacquered seamless tubular sag bars are preferred by many consultants and structural engineers; not only for visual effect, but also from a structural point of view. They are sturdy (0.9mm thick) and the zinc plated 12mm dia. threaded end spigots with nut and washer provide a positive fixing. (They are available in three standard lengths 20mm, 32mm and 100mm).

Floor Cleats


Floor Cleats

Floor Cleats
When Hi-Span C-Channels are used as mezzanine floor beams the MFB cleats should be used at the supports. The cleats are manufactured from a thicker material than the trimmer cleats to support the higher shear loads associated with floors. When a double span system is used, hot rolled cleats are needed in order to support the web of the channel. Fixing directly through the bottom flange of the channel to the supporting member is not recommended.

Sleeved Rail System


Sleeved Rail System

In the Sleeved Rail System, rails run past the faces of the columns, and the section depth of the rail plus the clearance required for a standard fixing cleat together determine the minimum dimension from the column face to the inside of the vertical cladding.

Joints in the rails are sleeved to give continuity, allowing the use of more economical sections and giving an improved deflection performance

Single & Single Span Joint Arrangement


Single & Single Span Joint Arrangement

Double Span Joint Arrangement.
This system combines single and double span rails with their joints staggered and sleeved. The provision of a sleeve at the unjointed connections over the penultimate support is required.

Single Span Joint Arrangement.
Apart from the penultimate support this system has sleeves at alternate joint positions. Rails must be continuous over a minimum of two spans using a sleeve, in order to create an end bay situation. (Sleeve arrangement as above, using single span rails).

Standard Punching Patterns


Standard Punching Patterns

Standard Punching Patterns.
These layouts do not imply that all sections are suitable.

Non Standard Punching Patterns.
Additional holes on the standard punchlines will be made as detailed. Non standard punchlines can be incorporated at no extra charge.

Eaves Beam Fixing


Eaves Beam Fixing

The Hi-Span Eaves Beam is a versatile structural element combining the
functions of an eaves purlin and a side sheeting rail, column tie and gutter
support. Designed to cater for spans up to 12.0m, it is available in four
depths of varying thicknesses with an angled top flange giving a choice of
roof slopes 0o, 5o, 10o, 15o, 22.5o, and 30o. All design calculations are
based on a single span condition therefore removing any need for
continuity between spans. Loading combinations and section properties
are all calculated in accordance with BS 5950: Part 5 1998.
Web and flange holes can be manufactured with counter formed holes in
order to suit flush face details.

Eaves Beam Restraint Requirements


Eaves Beam Restraint Requirements

Eaves Beam Restraint Requirements
The restraint requirement for each eaves beam situation is displayed on the calculation sheet provided by the Hi-Span Design Suite. If this information is not available the following recommendations should be adhered to.


 

Support resources

Call Applegate +44 (0)345 600 7177