allHandsOnDeck 0.1.0

All Hands On Deck — Bridge design library (AASHTO flexure, beam/slab reinforcement)

ahod — All Hands On Deck

Bridge design library extracted from the Kareem design notebook. Implements AASHTO 5.7.3.x flexural and shear design for reinforced concrete deck slabs and beams.

Install

pip install .

For the optional BMD/SFD plot feature:

pip install ".[plot]"

Quick start

from ahod import (
    BAR_TABLE, AVAIL_DIAS,
    pick_slab, pick_beam,
    design_AASHTO,
    design_layer,
    design_beam_bars,
    design_beam,
    shrinkage_design,
    solve_deck_slab_DL,
    col_class,
)

# Pick slab bars for As = 800 mm²/m
dia, spacing, As_prov = pick_slab(As=800)
print(f"Ø{dia} @ {spacing} mm  →  As = {As_prov:.1f} mm²/m")

# AASHTO iterative flexural design
As, a, c, phi_Mn, eps_t, ductility, ok, *_ = design_AASHTO(
    Mu=120, b=1000, d=200, fc=30, fy=420,
    As_min=300, ts_mm=250,
)
print(f"As = {As:.1f} mm²  |  φMn = {phi_Mn:.1f} kN·m  |  {ductility}")

Public API

Symbol	Description
BAR_TABLE	{dia: area} dict for standard bars (Ø10–Ø32)
AVAIL_DIAS	Sorted list of available bar diameters
pick_slab	Choose bar + spacing for a slab strip
pick_beam	Choose bar layout for a rectangular beam
design_AASHTO	Iterative AASHTO 5.7.3.2.1 flexural design
design_layer	Select one slab reinforcement layer
design_beam_bars	Bar layout for a beam (multi-row)
shrinkage_design	Shrinkage/temperature bars per AASHTO 5.7.3.4
design_beam	Full beam design (flexure + ductility + shear)
solve_deck_slab_DL	Exact force-method deck slab DL solver (n = 2–5)
col_class	Column slenderness classification

Dependencies

• numpy (required)
• matplotlib (optional, for solve_deck_slab_DL(plot=True))