Shawnessy LRT Station

 

Solutions & Technologies

Ductal® Archistructure allowed the construction of large canopies with a design and budget similar to metal. The watertightness and durability of Ductal® make it an ideal material for the roof of this public structure.

 

Description

Stantec Architecture Ltd. designed the platform roof for the Shawnessy light rail transit (LRT) Station in Calgary, Canada. The canopies, made with Ductal® Archistructure are just 2 cm thick, supported on singular columns, installed on the platform and attached in groups of three. Additionally, three Ductal® struts are connected to each of the columns to support the canopy roof system. It took 80 m3 of white Ductal® with organic fibres to pour the 24 canopies each 5 m wide and weighing 750 kg. Titanium oxide was added to the concrete to provide an extra-white appearance.

 

Tests

The design was based on calculations and testing (finite modelling). As well, the project required extensive testing of a full-scale prototype in order to establish critical load capacity. A series of tests included snow-load and wind uplift. Testing of the prototype took place at the University of Calgary laboratory. A mould was designed to cast half a canopy at a time. The two halves of each canopy were then assembled by means of a central rib.

 

Conception

The design of the steel mould had to take several factors into consideration related to Ductal® characteristics. The ultra-smooth surface finish of the canopies required injection moulding in a vertical mould placed on edge. To facilitate shrinkage during the initial hydration phase, the mould was rotated 90° after 12 hours which then provided support for the material until it gained sufficient strength for demoulding. This facilitated the removal of the top of the mould and easy demoulding. Last, the mould was returned to 180° so that the canopies were in their natural position for demoulding.

 

Conception

After two-by-two assembly of the canopy halves, the complete canopies were transported to the site. The Ductal® columns were first fitted into the platform; then the struts were fastened to them and the canopies were attached and connected.

Discover our projects

 

Chinese Cultural Center of Belgrade

This unique building has been designed by Chinese architects TF 铨赋, Xiaofeng Zhang and Shan Huang, with an inspiration of the ancient Chinese art painting guóhuà.

 

Manufacture Chanel

Iconic architectural building designed by Rudy Riccioti in Paris. Manufacture de la mode for Chanel (also called “Le 19M”) is a multidisciplinary creative hub that will group all the different ateliers that Chanel has in France under one unique building.

 

Lille Museum of Modern Art

Rolland Simounet built the Lille Museum of Modern Art near Parc du Héron in Villeneuve d'Ascq, France in 1983. Architect Manuelle Gautrand recently renovated and expanded the existing building.

 

Mucem

Designed by architect Rudy Ricciotti, a great ambassador for concrete, the magnificent "MuCEM" is an avant-garde creation that required several technical feats, made possible with Ductal® ultra-high performance concrete.

Give shape to tomorrow.
Contact us.
Loading
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100