The Forum for Gauge 3 Model Trains

Buildings, Structures and Scenery => Bridges and Tunnels => Topic started by: Peaky 556 on May 16 2017 23:19

Title: Northchurch Tunnel Portal
Post by: Peaky 556 on May 16 2017 23:19
Been having a lot of fun with the cement mixer on Apple Tree Railway.  Portal in progress, as inspired by this Stevenson drawing of Northchurch Tunnel mouth.
:) Tim
Title: Re: Northchurch Tunnel Portal
Post by: Peaky 556 on May 20 2017 09:46
A bit more progress between the showers.  I've found that useful book mentioned elsewhere "Bridges for Modellers" by L V Wood, and discovered that the proper name for this type of construction would be 'horseshoe arched masonry with extended voussoirs'.  Well how about that, and furthermore the style is generally attributed to Joseph Locke.
Regards, Tim
Title: Re: Northchurch Tunnel Portal
Post by: IanT on May 20 2017 10:39
"Proper" civil engineering Tim!

:)

IanT
Title: Re: Northchurch Tunnel Portal
Post by: Doddy on May 20 2017 11:06
Top job!

The spacing of the slate work looks spot on!

Bob
Title: Re: Northchurch Tunnel Portal
Post by: AshleyW on May 20 2017 12:04
lightcliffe tunnel between halifax and bradford has a similar style - i always refer to it as japanese bursting sun flag style!
Title: Re: Northchurch Tunnel Portal
Post by: Peaky 556 on May 20 2017 15:25
Good analogy Ash, but the sun is not quite yet rising on the Apple Tree Railway; no track down yet!
There are some other tunnels up your way with this style, e.g. The Woodhead.  Rather tasty but beyond my ability to model!
Cheers, Tim
Title: Re: Northchurch Tunnel Portal
Post by: Peaky 556 on May 26 2017 10:20
This is how it is shaping up.  My dear wife decided she'd like a cold frame... right across the projected path of the railway!  We came up with this compromise! :D
Title: Re: Northchurch Tunnel Portal
Post by: MikeWilliams on May 26 2017 17:58
That is very nice work.  Looks great.

Mike
Title: Re: Northchurch Tunnel Portal
Post by: Traininvain on May 27 2017 11:10
Sounds like a great Gauge 3 Society Newsletter article there Tim for the Autumn issue if poss!

cheers

Ian
Title: Re: Northchurch Tunnel Portal
Post by: Peaky 556 on May 28 2017 13:14
OK Ian, will do, and am hoping there'll be some more progress to show by then!
Regards, Tim