Ribbed Slabs & Half Slabs

Proven time-savers and cost-cutters.

Ribbed Slab

Ribbed Slab

Half Slab

Half Slab

Typical Span: 3 – 4 meters

Jackbilt ribbed slabs and half slabs are proven time-savers and cost-cutters. The concrete upstands of ribbed slabs and the metal dowels of half slabs serve similar functions – they facilitate handling and installation and serve as positive ties between the slabs and concrete topping.

Only 1 shoring needed for every 3 meter span.

Ribbed and half slabs are directly paintable.
No need for drop ceilings.

Typical Applications

Townhouses
Commercial Buildings
Hospitals

Speed, Ease, Efficiency.

Taytay Doctors Hospital

Jackbilt half slabs speed up construction. No need to set up and dismantle formworks, shoring, and scaffolds.

– A.P. Canlas Builders

South City Medical Center, Cavite
GICC Building, Bataan

Speed, Ease, Efficiency.

Taytay Doctors Hospital
South City Medical Center, Cavite
GICC Building, Bataan

Jackbilt half slabs speed up construction. No need to set up and dismantle formworks, shoring, and scaffolds.

– A.P. Canlas Builders

Jackbilt ribbed slabs were easy to install as promised. Project completion was 20% faster versus traditional construction.

– A senior architect of Forte Realty

Tierra Verde Residences, Cavite by Forte Realty
Tierra Verde Residences, Cavite by Forte Realty
Jackbilt ribbed slabs were easy to install as promised. Project completion was 20% faster versus traditional construction.

– A senior architect of Forte Realty

Labor costs went down 10%. Slab construction was around 20% faster versus traditional construction. Jackbilt half slabs are great time savers.

– Senior engineer, EEI

Hi Precision Tower, Makati. Contractor: EEI
Hi Precision Tower, Makati. Contractor: EEI
Labor costs went down 10%. Slab construction was around 20% faster versus traditional construction. Jackbilt half slabs are great time savers.

– Senior engineer, EEI

Technical Specifications

Ribbed Slab Cross Section
CROSS SECTIONAL PROPERTIES 
Width mm1,196
Height of plank mm60
Cross section net area mm288,261
Top fiber to neutral axis (Ytop) mm87
Bottom fiber to neutral axis (Ybot) mm43
Moment of inertia (lx) mm4486 x 103
Self weight of product, kg/m2312
CONCRETE PROPERTIES 
Concrete density, kg/m32,400
Strength @ 28 days, MPa41
Strength @ release, MPa28
Modulus of elasticity @ service, Ec, MPa30 x 103
PRESTRESSING STEEL 
7 wires, high tensile, helical strand
Ultimate strength, fpu, MPa1,860
Yield strength, fpy, MPa1,630
Modulus of elasticity, Ep, MPa195 x 103
Nominal diameter, D mm9
Area of wire, Ap mm255
CONCRETE TOPPING
To produce a flat surface and solid slab section, provide concrete topping with a minimum strength @ 28 days, f’c, = 21 MPa (3,000 psi) in space between ribs.
To increase capacity of the ribbed slab, provide additional structural topping with a minimum strength @ 28 days, f’c, = 21 MPa (3,000 psi) of 50 mm from the top of rib.
Wire mesh reinforcement: 6 mm diameter at 150 mm o.c.

Ribbed Slab Connection Details

Ribbed Slab

Typical Installation

For more information about
Ribbed Slabs

Technical Specifications

Half Slab Cross Section
CROSS SECTIONAL PROPERTIES 
Width mm1,197
Height of plank mm70
Cross section net area mm282,236
Top fiber to neutral axis (Ytop) mm34
Bottom fiber to neutral axis (Ybot) mm35
Moment of inertia (lx) mm4

33 x 106

Self weight of product, kg/m2197
CONCRETE PROPERTIES 
Concrete density, kg/m32,400
Strength @ 28 days, MPa41
Strength @ release, MPa27
Modulus of elasticity @ service, Ec, MPa30 x 103
PRESTRESSING STEEL 
7 wires, high tensile, helical strand
Ultimate strength, fpu, MPa1,860
Yield strength, fpy, MPa1,630
Modulus of elasticity, Ep, MPa195 x 103
Nominal diameter, D mm9
Area of wire, Ap mm255
CONCRETE TOPPING
Provide concrete with a minimum strength @ 28 days, f’c, = 21 MPa with 50 mm height from top of plank.
Wire mesh reinforcement 6 mm diameter at 150 mm o.c.

Half Slab Connection Details

Half Slab

Typical Installation

For more information about
Half Slabs