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How to form door openings over 1200mm wide

Use Gypframe products to form door openings over 1.2 metres wide to 3.3 metres, and over 3.3 metres wide to 3.6 metres.

This video will look at forming door openings over 1.2 metres wide to 3.3 metres, and over 3.3 metres wide to 3.6 metres.

Openings over 1.2 metres wide to 3.3 metres

For openings over 1.2 metres wide to 3.3 metres, we’ve pre-formed the door opening with 70mm Gypframe stud framework. The opening is built to Heavy and Severe Duty Rating to satisfy BS 5234. The doorway stud is cloaked with 72 DC 60 Channel and the head channel is formed out of 72 EDC 70 Channel.

To provide additional strength we insert a 70mm Gypframe stud, open face down, into the head track. This is then fixed with British Gypsum Wafer Head Jack-Point Screws at 150mm centres to both sides of the head track. Short lengths of metal stud are then inserted into the head of the door openings at specified centres, and they are fixed to the door opening head channel and ceiling channels where there is no deflection head.

Where a deflection head applies, the maximum boarding height over door openings is 4.8 metres for single layer boarding, and 2.4 metres for double layer boarding. Where boarding heights over openings exceed this, structural steel sections should be used as designed by structural engineers.

Note that the same principle applies when forming a cill detail to a window or hatch opening, in the same way the head of the door opening has been formed here.

Openings over 3.3 metres to 3.6 metres wide

For openings over 3.3 metres to 3.6 metres wide, we have pre-formed the door opening sides with 70mm Gypframe stud framework. The opening has been formed to Heavy and Severe Duty Rating to satisfy BS 5234.

To support the head of the opening, we fix short lengths of 70mm stud to the door opening with British Gypsum Wafer Head Drywall or Wafer Head Jack-Point Screws, depending on the gauge of the Gypframe partition sections being installed.

Now we insert 72 EDC 70 Channel in place and secure with two wafer head screws to both sides of the metal stud, and at each side of the opening.

The remaining stud at each side of the doorway is cloaked with 72mm deep channel.

The head track is built as previously for over 1200mm wide to 3.3 metre wide openings. Also as mentioned previously, where a deflection head applies, the maximum boarding height over door openings is 4.8 metres for single layer boarding, and 2.4 metres for double layer boarding. Where boarding heights over openings exceed this, structural steel sections should be used as designed by structural engineers.

Note that the same principle applies when forming a cill detail to a window or hatch opening, in the same way the head of the door opening has been formed.

You should now have the practical knowledge and understanding to form openings greater than 1.2 metres.

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