Multi-Page Apps
I have completed a couple more apps using Dash by Plotly
This time, my goal was to build the apps on the web — accessible from any device – desktop, phone, iPad.
Now, I have a full proof of concept.
Feel free to follow the links and to offer a critique.
AISC Strong Axis Bending
https://khoitsma1.pythonanywhere.com/apps/app2
Replaces 45 pages in AISC 15th Manual
Graphical and tabular data
Change the shape selection (HP12, for instance)
Hover over the chart data points
https://khoitsma1.pythonanywhere.com/apps/app3
All properties for a user’s selection (2L4X3X3/8X3/4SLBB
, for instance)
Just start typing 2L4 and the drop down will filter to your text
With scroll bars horizontal and vertical Coefficient C for Bolt Groups
https://khoitsma1.pythonanywhere.com/apps/app5
Replaces 48 pages in AISC 15th Manual
Same old idea; this my version of ‘Hello World’. WT Strut Capacity (eccentrically loaded)
https://khoitsma1.pythonanywhere.com/apps/app6
I transformed my WT strut spreadsheet into a single program function with only 8 inputs.
def WTStrutEcc(sh_name, stl_name, P_load, Lb_feet, Gusset_thickness,
Stem_in_CompressionQ, Axial_amplificationQ,
Consider_selfweightQ):
Two databases are used; one for shape properties, and one for steel properties.
Notice the optional plot.
First, that I can build new apps, and seamlessly link them into what I have already.
Second, that the programming is readable.
Lc_over_rmin_smallQ = Lc_over_rmin <= Lc_over_criteria
x0 = sh.Y - sh.TF / 2
y0 = sh.X
r0_bar_squared = x0 ** 2 + y0 ** 2 + (sh.IX + sh.IY) / sh.A
H = 1 - (x0 ** 2 + y0 ** 2) / r0_bar_squared
Fex = (PI / (Lcx / my_rx)) ** 2 * E
Fey = (PI / (Lcy / my_ry)) ** 2 * E
Fez = ((PI / (Lcz) ** 2 * E * sh.CW + G * sh.J)) * (1 /
sh.A / r0_bar_squared)
FE_E4 = ((Fey + Fez) / 2 / H) * (1 - SQRT(1 - (4 * Fey * Fez * H) /
(Fey + Fez) ** 2))
Fe_nonslender = (PI / Lc_over_rmin) ** 2 * E
Third, that handling a large amount of data is quick and easy.
These 2 are just UI (user interface) demoshttps://khoitsma1.pythonanywhere.com/apps/app1
https://khoitsma1.pythonanywhere.com/apps/app4