Concrete Floor - Two-Way, Slab

Concrete Floor - Two-Way, Slab

Isometric and plan drawings of a Two-Way Concrete Flat Slab Floor System measuring typical spans
Description
Description

A two-way concrete flat slab is a structural system used in building construction, composed of a horizontal, reinforced concrete slab that spans in both directions, transferring loads to supporting columns. Unlike a flat plate system, a flat slab incorporates drop panels and/or column capitals to enhance the slab's strength and stiffness at column connections.

These additions provide increased shear resistance, reduce punching shear stress, and minimize deflection, making the flat slab suitable for larger spans and heavier loads. This system offers several advantages such as reduced floor-to-floor height, efficient formwork, and open spaces for architectural flexibility, while maintaining adequate structural performance.

Dimensions & Sizes
Dimensions & Sizes

Two-Way Slab Concrete Floors are constructed in a range of sizes with conventional spans between 10’-40’ (3.05-12.19 m) and post-tensioned spans of 13’-46’ (3.96-14.02 m). Slab depths are typically between 4”-14” (10.2-35.6 cm) based on the span to depth formula of Span/36. Column sizes for Two-Way Slab Concrete Floors are commonly 12”-24” (30.5-61 cm) with pan widths at 1/3 of the Span Length and pan depths of .25 x Slab Thickness.

Section drawing of a Two-Way Concrete Flat Slab Floor System with dimensions for standard floor depths and heights
Section drawing of a Two-Way Concrete Flat Slab Floor System with dimensions for standard floor depths and heights
3D Model
3D Model
Common Questions
Common Questions
View of Concrete Floor (Two-Way, Slab) in 3D available for downloadConcrete Floor - Two-Way, Slab
Details
Details

*Under Development*

Height:
4”-14” | 10.2-35.6 cm
Width:
10’-46’ | 3.05-14.02 m (Span)
Depth:
Length:
10’-46’ | 3.05-14.02 m (Span)
:
:
Weight:
Area:
:

Span (Conventional): 10’-40’ | 3.05-12.19 m
Span (Post-Tensioned): 13’-46’ | 3.96-14.02 m
Slab Depth (Formula): Span/36
Column Size: 12”-24” | 30.5-61 cm
Drop Panel Width:
1/3 Span Length (Minimum)
Drop Panel Depth: .25 x Slab Thickness
Floor to Floor Height:
10’-16’ | 3.05-4.88 m

Materials:
Reinforced concrete
:
:

Drawings include:
Two-Way Concrete Flat Slab Floor System plan, section, isometric

Concrete floor systems are reinforced slab structures designed to satisfy a range of loading and span conditions in a building. Concrete floor systems are designed to span in either one direction (one-way) or both directions (two-way) of a structural bay.

4”-10” | 10.2-25.4 cm
6’-28’ | 1.83-8.53 m (Span)
6’-28’ | 1.83-8.53 m (Span)
Concrete Floor - One-Way, Slab
25.400
853.000
853.000
8405
https://p3d.in/e/ZoAOs
GUIDE
3D
Concrete Floor - One-Way, SlabPerspective view of a 3D model of Concrete Floor (One-Way, Slab)Perspective view of a 3D model of Concrete Floor (One-Way, Slab)
4”-14” | 10.2-35.6 cm
10’-46’ | 3.05-14.02 m (Span)
10’-46’ | 3.05-14.02 m (Span)
Concrete Floor - Two-Way, Slab
35.600
1402.000
1402.000
8400
https://p3d.in/e/BowS7
GUIDE
3D
Concrete Floor - Two-Way, SlabView of Concrete Floor (Two-Way, Slab) in 3D available for downloadView of Concrete Floor (Two-Way, Slab) in 3D available for download
10”-29” | 25.4-73.7 cm
25’-80’ | 7.62-24.38 m (Span)
25’-80’ | 7.62-24.38 m (Span)
Concrete Floor - Two-Way, Waffle Slab
73.700
2438.000
2438.000
7450
https://p3d.in/e/1JpzY
GUIDE
3D
Concrete Floor - Two-Way, Waffle Slab3D model of Concrete Floor Two-Way, Waffle Slab viewed in perspective3D model of Concrete Floor Two-Way, Waffle Slab viewed in perspective
12”-24” | 30.5-61 cm
12’-48’ | 3.66-14.63 m (Span)
12’-48’ | 3.66-14.63 m (Span)
Concrete Floor - One-Way, Band Slab
61.000
1463.000
1463.000
725
https://p3d.in/e/ZKCmE
GUIDE
3D
Concrete Floor - One-Way, Band SlabView of Concrete Floor (One-Way, Band Slab) in 3D available for downloadView of Concrete Floor (One-Way, Band Slab) in 3D available for download
5”-14” | 12.7-35.6 cm
10’-47’ | 3.05-14.33 m (Span)
10’-47’ | 3.05-14.33 m (Span)
Concrete Floor - Two-Way, Plate
35.600
1433.000
1433.000
400
https://p3d.in/e/R3n2J
GUIDE
3D
Concrete Floor - Two-Way, Plate3D model of Concrete Floor (Two-Way, Plate) viewed in perspective3D model of Concrete Floor (Two-Way, Plate) viewed in perspective
4”-10” | 10.2-25.4 cm
6’-28’ | 1.83-8.53 m (Span)
6’-28’ | 1.83-8.53 m (Span)
Concrete Floor - One-Way, Slab & Beam
25.400
853.000
853.000
95
https://p3d.in/e/mIKv5
GUIDE
3D
Concrete Floor - One-Way, Slab & BeamView of Concrete Floor (One-Way, Slab & Beam) in 3D available for downloadView of Concrete Floor (One-Way, Slab & Beam) in 3D available for download
5”-15” | 12.7-38.1 cm
20’-50’ | 6.1-15.24 m (Span)
20’-50’ | 6.1-15.24 m (Span)
Concrete Floor - Two-Way, Slab & Beam
38.100
1524.000
1524.000
90
https://p3d.in/e/7Xeq5
GUIDE
3D
Concrete Floor - Two-Way, Slab & BeamPerspective view of a 3D model of Concrete Floor (Two-Way, Slab & Beam)Perspective view of a 3D model of Concrete Floor (Two-Way, Slab & Beam)
9”-25” | 22.9-63.5 cm
10’-60’ | 3.05-18.29 m (Span)
10’-60’ | 3.05-18.29 m (Span)
Concrete Floor - One-Way, Band Slab & Joist
63.500
1829.000
1829.000
25
https://p3d.in/e/DzI4q
GUIDE
3D
Concrete Floor - One-Way, Band Slab & JoistPerspective view of a 3D model of Concrete Floor (One-Way, Band Slab & Joist)Perspective view of a 3D model of Concrete Floor (One-Way, Band Slab & Joist)
9”-25” | 22.9-63.5 cm
10’-80’ | 3.05-24.38 m (Span)
10’-80’ | 3.05-24.38 m (Span)
Concrete Floor - One-Way, Joist Slab
63.500
2438.000
2438.000
25
https://p3d.in/e/6Qp04
GUIDE
3D
Concrete Floor - One-Way, Joist Slab3D model of Concrete Floor (One-Way, Joist Slab) viewed in perspective3D model of Concrete Floor (One-Way, Joist Slab) viewed in perspective