Beginning the third of the Silverstone races from fourth place, Morris, from Marford near Wrexham, made a fantastic start to move into third on the run to Copse and then closed up behind second-placed Jake Hughes to end lap
one only 0.5 seconds shy of his title rival.
If an end lap
should occur between supports, such lap should be of 4 inches length.
Corrosion is the other main reason for failures on metal roofs, particularly at end laps
and cut edges.
Youngster Russell Anderson, from Dumfries, Scotland, was the hero of the race, held over 75 minutes duration plus the five end laps
In fact, screws are used not only to secure the panels to the purlins, but to "stitch" the panels together at the sides and end laps
. Rubber or neoprene washers are installed under fastener heads, and a tape or sealant is used to waterproof the panel side laps and end laps
The sheets of aluminium, up to 85m in length, are rolled directly onto the roof to create a continuous weathertight covering without end laps
. The centre will open to host the World Bank Group this September, and will stage sporting events and concerts.
One is at the end laps
of the metal panels where the original butyl tape seals age and fail.
A sealant is installed between the two panels at the side, and end laps
and fasteners are used for connection.