Portals:

There were more than 1,500 railway tunnels built in the United States. Most portals acted as retaining walls to keep the tunnel open and to minimize falling debris onto the track. Many portals were natural rock or timber. Some early portals – including the Moffat & Hoosac– were initially built with large wooden doors. Doors are a great idea for garden railroads. They create a barrier to possums, rabbits, raccoons and other critters that seek habitat in your tunnel. In garden layouts, the "stone portal"makes an ideal "gateway" from train shed, basement window or garage onto the layout.
   
      
For larger click link:  Quarry:#61MN,    Quarry:#19NY,     Joe B.,PA     Quarry:#60CT,         Drainpipe Mine
More Pictures: Click on link Stone Model Gallery - RR models and Building Structures     




 

Shows the "single pour" of the "Stone & Cement" technique used for tunnel portals, station platforms, stone bridges, retaining walls, etc. Explains "Casting Masters", formwork, mold resist, reinforcing wire and Quikcrete® Vinyl Concrete Patcher.1:40

 

 

#
Product
Description
Cost
Photo


#7012

 

 

How-To: "Cut Stone Portals"

 

Shows prototype portals, styles, construction methods, pre-cut stone shapes, includes storyboard instructions, and plans. 20 photos & 3 drawings, 4 pgs

 

$2.25


#7051

 

 

 

How to Model in Stone & Cement

Click Stone&Cement for more detail

 

Includes step-by-step plans for modeling the cut stone portal. Also included are both stone and concrete portal designs to model in the Quikrete® Vinyl Patcher Concrete Technique

 

$19.95



New
#7051
-13

 

 

 

DVD How to Model in Stone & Cement

Click DVD for more detail

 


17 minute DVD "shows" you frmwork, techniques, refinements, tips, and trouble shooting . . .plus new advancements that are used since the book was written over 10 years ago. It's a companion to the handbook. NTSC

 

$ 14.95


#7603

 

MODELING VIEWS:
Hoosac Tunnel - West Adams, MA


A classic cut stone tunnel portal with column abutments and side retaining walls. Arch stones are cut in the unique Eastern style.


$ 5.95



CONSTRUCTION TIPS: There are many methods to create lasting portals and bridges/viaducts using real stone.
    • The first is casting with Quikrete Vinyl Patcher Cement (see book below)
    • The second is gluing. When using steel as a substrate, Dennis R. modeler recommends clear LEXEL – a Sashro Product. www.sashco.com
When using plastic as a substrate, Bob P. modeler recommends an epoxy Araldite 2015 (specs: www.araldite2000plus.com; availibility and info write bcatmell@krayden.co
    Some "Cautions": When gluing or casting (Quikrete Vinyl Patcher Technique) with "Jig Stones" or faux stone, your Jig Stones MUST be sealed with a preserative like Thompson's Water Seal. Why? Jig Stones uses a fast set up "cement" that contains gypsum. Structures like portals, bridges and mills are left out in the weather on your layout. "Stone" created using gypsum will deteriorate and fall apart unless adequately sealed. See their website for additional specifics.
    When selecting a rigid substrate, we suggest caution when considering insulating styrene (foam board) if you have deer or squirrels. Both deer and squirrels like to nibble on it. When selecting "cement board" as a rigid substrate, test a sample by submerging it in water for a week. Many "cement boards" (used in interior subflooring as an underlayment for ceramic tile) contain gypsum in its cement. This will deteriorate unless sealed.


Bridges & Viaducts
: Stone & Concrete in the Vinyl Patcher Technique create an all-weather finished model well suited for all exterior conditions: ponds, streams, heat, UV, freezing, wind, and high moisture. "Gluing" or "veneering" stone is ideal over existing structures of concrete, exterior wood or steel. Gluing requires substantially more time.


    
For larger photos click link: AG Viaduct,    Curved Arch Viaduct,    TX Overpass,    Abutment

      
DH Curved Arch,    NJ Viaduct ,   24" Arch Bridge,    Bridge w/Cutwaters     


#
Product
Description
Price


#7014

 

 

How To Build A Stone Arch Bridge

 

Shows pre-cut stone shapes, construction methods, storyboard instructions & plans. 76 photos & 7 drawings, 12 pages. ( See Reviews)

$4.95


#7016

 

How to Build Curved Bridges & Viaducts
(Understanding of Quikrete Vinyl Patcher Technique as shown in #7051 and bridge building techniques as shown in #7014 is helpful.)

Development of patterns and formwork to creat curve. Does not use formula work - all measurements are made on paper with curved track, ruler, pencil and string. 40 photos, 8 pgs.

$4.00


#7015

 

 How to Build Stone Bridge Abutments
Shows prototype abutment styles, how to measure, & construction method using simple cardboard forms, storyboard instructions. 23 photos, 4 pgs

$2.25



#7607

 

 

MODELING VIEWS:
Rockville Bridge- Maryville,PA

This is the longest stone masonry arch railroad bridge (4 tracks) in the world – 48 arches, 3,820' long. It's ideal for across ponds and streams. Shown are classic abutments and cutwaters.

$ 5.95



#7610

 

 

MODELING VIEWS:
Fisher Bridge, VT (St. Johnsbury & Lamoiller County RR)

A truly American wooden covered RR bridge. It has a full-length copula smoke vent. We were lucky enough to be there when they were refurbishing it – showing the understructure of the Town-Pratt construction.

$ 5.95