Whats is the difference between marine and civil frames?
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The marine frames are made from 10mm steel bar and are typically welded into steel bulkheads and deckheads. There are different types of frame available – see the Transit manual.
The civil frames are made from 60 x 60 x 6 mm angle which provides a 60mm flange and are either cast into or bolted onto concrete, blockwork or brick walls and floors.
Both types are available in multiple apertures.
Choose the correct frame type e.g HMX for marine, HCX for civil
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The cables are already installed – what is the solution?
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If already installed an open frame is needed e.g.HCOX2 or HMOX2. Note: for multiple frames the removable end can be either horizontal or vertical or both depending on the site requirements. However for frames that are HCOX8+8+8x3 for example the central aperture cannot accommodate existing cables.
The removable ends must be clearly identified when placing an order.
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What are the frames made of?
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Frames are available in mild steel, stainless steel and aluminium. Note: Aluminium cannot be used in a fire situation unless fully insulated. Stainless steel, aluminium or plated mild steel are suitable for corrosive situations.
Material type should be clearly identified when asking for quotations or placing orders.
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What size frame is needed?
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A Frame required to suit a specific number of cables/pipes..
The following information on cables/pipes is needed:
• Number of cables/pipes
• Outside diameter of each item
• What percentage of spare capacity is needed for future use
A frame required to suit a specific opening/aperture. Aperture dimensions required. (See overall frame chart in Transit manual)
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Does the civil frame have to be cast in during construction?
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No – The frame can be installed at a later stage. Frames can be cast into 'Block work' or bolted onto the surface of the structure. however if frames are to be bolted to structure it is essential that the hole dimensions are cut accurately – see chart in transit manual
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How are the civil frames face fixed onto the wall or floor?
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1. Hole dimensions need to be correctly sized – see frame dimension chart in Transit manual. Note that if the aperture is to be turned inwards an additional 6mm is to be added to both dimensions to take into account the radius curve of the weld.
2. Hawke intumescent mastic is required to seal between the frame flange and the brick/concrete face. See Transit manual for application details
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How much mastic is needed to seal between the frame flange and the brick/concrete face?
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One 330ml tube of mastic is sufficient to seal 3 individual frames or a multiple frame of up to 4 apertures.
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The transit frames will be cast in during construction, how can the hole be kept open?
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Polystyrene moulds are available to maintain the aperture. Details of wall/floor thickness needed to provide correct size.
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How can the non-transit side be framed out to provide a neat finish?
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A blacking plate can be provided. The thickness of wall/floor is needed to provide correct size
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How can cables which are in a plastic duct be sealed?
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The HRT circular frames are designed to fit into 32mm, 40mm, 50mm, 70mm, 100mm, 150mm and 200mm pipes – see Transit manual for tolerance details. It should be noted that when HRTs are used in conjuntion with plastic piping the product is converted to an environmental gas,water seal only.
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What are the HRT Transits made of?
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HRT's (Hawke Round Transits) are a series of circular rubber components, each of which has a central core manufactured to accommodate one or more cables secured by the installation of corresponding Hawke Transit Insert blocks. The unit is fitted with compression plates at front and back. (Compression plates are available in mild steel as standard or stainless steel for aggressive environments. They are not available in Aluminium )
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What size transits are available?
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There are four standard aperture sizes and each transit frame is made up of one or more apertures.
The four standard sizes are as follow.
Size 2 60mm x 120mm installation area
Size 4 120mm x 120mm installation area
Size 6 180mm x 120mm installation area
Size 8 240mm x 120mm installation area
Each aperture has a further area of 40mm x 120mm which is use purely to accommodate the installtion of the compression system.
For items in excess of 100mm o/d the HCLX civil frames are available and will seal items up to 330mm o/d – see Transit manual.
Note: HCLX frames are designed for a single penetrating item only and no stayplates are needed or available for this type of frame.
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