Paraslim and Webtie

Paraslim

Paraslim is a modular formwork system for use in the construction of bridge deck

cantilevers. The system allows formwork to be erected and dismantled quickly

either piecemeal or in panels.

Paraslim – Deck edge formwork system

• All erection, adjustment and stripping

operations carried out safely from deck level.

• Fully adjustable to fit a wide range of steel or

concrete bridge beams and sheet piles.

• Rapid erection of prefabricated soffit panels at

ground level.

• Half the price of underslung or overslung

systems.

• Paraslim cantilever unit provides support and

safe access platform

• Up to 60m of Paraslim can be erected and

levelled in one shift by 2 operatives and an

engineer.

Paraslim

• The Paraslim cantilever unit provides a

safe access platform.

• The cantilever units are prefabricated

on the ground typically in 6m lengths.

• Units are craned into position and fixed

into place (via Paraslim tie) from bridge

deck level.

Paraslim: side view

plan layout of plywood to Paraslim modules

Paraslim

Paraslim Bracket Cast

Houses the Paraslim Tie

and connects it to the

beam anchorage.

Paraslim Porthole Bearing

Connects the Paraslim Frame

to the Paraslim Tie. Captive in

the Superslim Soldier

porthole. 3m deck cantilevers cast on

Paraslim support.

Typical C Hook arrangement, lifting a

Paraslim module.

Webtie

Webtie is a 30kN capacity, soffit formwork suspension system for forming the infill slab

between steel girders in composite bridge deck construction.

Webtie has two distinct types:

• Webtie Saddle for internal beams

• Webtie Delta for edge beams

Webtie Saddle

Webtie Delta

• It enables bridge decks to be erected and

stripped at a high rate without the need for

access systems.

• Webtie straddles the top flanges of bridge

girders or attaches to shear connectors.

Webtie

The main advantages of using the system are:

• Webtie has rapid erection and disassembly

• Only a minimum quantity of equipment is required

• There is no need for making tie holes good

• Webtie has a 30kN load capacity

• It is independent of girder depth

• Works on both steel and concrete beam bridges

• The ties are non-wicking and rot proof

• Erection guide and procedures are available

Webtie

Webtie Edge Protectors

Available in plastic or extruded

aluminium variants, they are

used to protect the Webtie as it

passes over the edge of the

bridge beam/girder.

Secondary beams spaced across Super Slim bearers

Superslim can be

splayed to suit

requirements After final construction

Webtie is cut and

sealed using the hot

knife system

Webtie being used