PBWS

PBWS Folded postbase

PBWS is single-piece, non-welded post base for connecting timber to concrete. An engineered solution, this connector requires up to 45% less steel than a traditionally designed post base.

CE Marking
ETA
Service class 3
Outdoor
ZPRO

Product Details

Images

PBWS post installation using 4 x CSA connector screws.
PBWS post installation using 2 x SSH hex head screws.
PBWS beam installation.

Features

Material

Steel:

S250GD + ZPRO

Corrosion protection:

ZPRO coating - corresponding to a zinc layer of approx. 55 μm

Advantages

  • Light and easy to handle
  • No pre-drilling required
  • Reduced environmental impact due to material reduction
  • Flexible fastening options
  •  

Features

​Built to last, the surface of the PBWS is protected using our ZPRO coating for improved resistance to corrosion compared with conventionally coated galvanised steel. This makes the PBWS a good choice for a wide variety of outdoor projects including pergolas, decking, car ports, fencing and sheds.

Optional hole patterns mean it can be fastened to the timber post using either 4 x CSA connector screws or 2 x SSH Hex Head screws, no pre-drilling is required.

Reduced Environmental Impact

PBWS offers the same load-rated capacity as standard post bases, yet due to it's unique folded build, requires up to half as much steel material to produce, making it better for the environment and easier to handle.

Extend the life of outdoor structures

Our innovative ZPRO coating provides additional corrosion resistance for structural steel connections typically used in outdoor settings such as car ports and gardens.

It provides the same protection against the elements as a hot dip galvanised coating (corrosion category C3 EN ISO 12944) however ZPRO has a much neater, shinier finish.

Economical too, ZPRO bridges the gap between standard glavanised steel and the considerably more expensive stainless steel material.

Application

Suitable on

  • Supporting member: concrete,
  • Supported member: solid timber, glulam...

Suitable For

Pergolas
Decking
Fence posts
Sheds
Awnings
Porches
Car ports

Technical Data

Dimensions

Product dimensions

References Product dimensions [mm] Top part holes
A B C E F G t Ø5 Ø8,5
PBWS45Z 45 40 99.5 50 150 22 3 4 2
PBWS48Z 48 40 98 50 150 22 3 4 2
PBWS70Z 70 40 87 50 150 22 3 4 2
PBWS73Z 73 40 85.5 50 150 22 3 4 2
PBWS90Z 90 40 77 50 150 22 3 4 2
PBWS98Z 98 40 73 50 150 22 3 4 2
PBWS100Z 100 40 72 50 150 22 3 4 2

Product capacities

References Product capacities - Timber to Concrete
Fasteners Characteristic capacities - Timber C24 [kN]
On post R1,k R2,k
Qty Type
PBWS45Z 4 CSA5,0x40 20.2 2,1/kmod
PBWS48Z 4 CSA5,0x40 20.2 2,1/kmod
PBWS70Z 4 CSA5,0x40 20.2 2,1/kmod
PBWS73Z 4 CSA5,0x40 20.2 2,1/kmod
PBWS90Z 4 CSA5,0x40 20.2 2,1/kmod
PBWS98Z 4 CSA5,0x40 20.2 2,1/kmod
PBWS100Z 4 CSA5,0x40 20.2 2,1/kmod

*Minimum concrete strengt C12/15

Product capacities - Ø8 Connector screw

References Product capacities - Timber to Concrete - Ø8 Connector screw
Fasteners Characteristic capacities - Timber C24 [kN]
On post R1,k R2,k
Qty Type
PBWS45Z 2 SSH8x40 20.2 2,1/kmod
PBWS48Z 2 SSH8x40 20.2 2,1/kmod
PBWS70Z 2 SSH8x40 20.2 2,1/kmod
PBWS73Z 2 SSH8x40 20.2 2,1/kmod
PBWS90Z 2 SSH8x40 20.2 2,1/kmod
PBWS98Z 2 SSH8x40 20.2 2,1/kmod
PBWS100Z 2 SSH8x40 20.2 2,1/kmod

*Minimum concrete strengt C12/15

Installation

Installation

Fixing

On timber :

  • CNA4.0 ring shank nails,
  • CSA5.0 screws,
  • Ø8 mm SSH screws,
  • Bolts Ø8 mm.

On concrete :

  • Chemical resin AT-HP

The  distance between the plate and the concrete must be 50 mm maximum.

Installation

Upper part :

  1. Place the post in the postbase,
  2. Secure the post base to the post.

Lower part :

  1. Secure the post base to the post,
  2. Drill the support vertically, to the recommended diameter and depth,
  3. Position the post and finalize the fixing to the ground using adhesive,
  4. The column base can also be embedded in the concrete when the latter is poured.

Certification

European Technical Assessment (ETA)

Downloads

CAD Library

DWG (2D) REVIT (2D) DWG (3D) REVIT (3D) SAT XML
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Contact

Simpson Strong-Tie U.K.

Simpson Strong-Tie

Cardinal Point, Winchester Road
Tamworth
Staffordshire
B78 3HG
United Kingdom