Calculadora de Barandilla — ft, balaustres, postes, costo
Cómo usar esta calculadora
Ingrese la longitud total de la barandilla, elija la altura (36" para deck, 42" para escaleras o decks elevados), seleccione tamaño y espaciado de balaustres, y configure el espaciado de postes. La calculadora cuenta balaustres, postes, longitudes de riel y herrajes.
IRC R312.1 — espacio máximo de 4" entre balaustres. La calculadora verifica automáticamente el cumplimiento.
Costo — precio por balaustre, por poste, por sección de riel, y por tapa de poste.
Cálculos Guardados
| Time | Length | Height | Posts | Balusters | Cost |
|---|
Cómo Calcular Materiales para Barandilla
This railing calculator estimates posts, balusters, top and bottom rails, post caps, and hardware for deck, porch, and stair railings. It complies with IRC R312.1 which requires a maximum 4" sphere gap between balusters and minimum 36" railing height for decks (42" for stairs and elevated areas).
Fórmulas Utilizadas
Posts: ⌈total length / espaciado de postes⌉ + 1 (+ corner posts for L-layouts)
Balusters per section: ⌈section length / (baluster width + gap)⌉ + 1, then subtract 1 for each adjacent post
Rail length: total railing length + 10% desperdicio, divided into 8 ft pieces
Actual gap: (section length − n × baluster width) / (n + 1)
Building Code Reference
IRC R312.1.1: Guards requeridos where walking surface is > 30" above grade. Min height 36". Max 4" sphere opening. IRC R312.1.2: Stair guards min 34" measured from stair nosing.
FAQ
What is the maximum baluster spacing? Per IRC R312.1.3, a 4" sphere cannot pass through any opening. Using 3.5" gap provides a safe margin for wood movement.
How far apart should railing posts be? Typically 6–8 ft a centros. Closer spacing provides more strength. Posts must resist 200 lb lateral load según IRC R301.5.
