floors 99% of the time have 38mm thick P6 high density flooring
grade chipboard. In the possible event of minor spills, P5 moisture resistant chipboard decking would be
platforms have galvanised steel chequer plate or galvanised steel
open mesh flooring to prevent rotting and rusting from the weather. (Also see FAQ).
Universal Beams similar to an RSJ or I Beam are the
main support for mezzanine floors.
Galvanised steel C-section is used with cleats at
each end to connect to the main beams. The decking is screwed to the joists thus forming the mezzanine floor.
To support a mezzanine floor square hollow section
steel (SHS) ranging from 70mm² to 200mm² are used. A flat square steel plate is welded to the bottom of the SHS
forming a base plat and a flat rectangular steel plate is welded to the top to connect to the universal
Access to the mezzanine floor is gained by the use
of a staircase. We are able to offer a comprehensive designed all steel staircases constructed from 100x50x5mm
Rectangular Hollow Section stringers with 50x50x2.5 Square Hollow Section posts and 50x25x2.5 Rectangular Hollow
Section hand & knee rail which is generally more than acceptable for mezzanine storage platforms and
mezzanine office area’s. The steel treads are from 800mm to 1200mm wide with open or closed risers. The width
and type of riser does depend on what the mezzanine floor will be used for.
Hand & Knee
Edge protection to a mezzanine floor depends on the
use and environment the mezzanine floor will be situated in. For mezzanine storage platforms and mezzanine
office area’s handrail generally consists of 50x50x2.5 square hollow section posts 1130mm high with 33.7mm
galvanised circular hollow section handrail at 1100mm high and 33.7mm galvanised circular hollow section knee
rail at 550mm high. However a mezzanine floor which will be mainly used by the public and small children will
require to have no gaps enabling a 100mm sphere to pass through. This can be overcome in a number of ways from
MDF/Chipboard panels, steel bars at 100mm centres to tempered glass panels, all depending on your budget
Mezzanine floors do not necessarily require
kickboard at the bottom of the handrail posts. However if you have the possibility of small objects being
accidentally kicked of the edge of the mezzanine floor it is good health and safety practice to install
kickboard consisting of 12mm thick timber (Self Colour) 100mm high with planed sawn edges screwed to the bottom
of the handrail posts.
Sliding Style Load
A mezzanine floor for storage purposes would most
likely require a Load Gate to enable access of goods on to the mezzanine floor. This simple design acting like a
trombone sliding in the hand and knee rail is designed to create an opening of 1.5m to 2.0m without taking up
crucial space on the mezzanine floor area and is constructed from 22mm steel circular hollow
Up & Over Style Safety Load
A load gate designed to create a barrier on the
mezzanine floor when open or closed (i.e. no open edges for personnel to fall off the floor). The gate is
constructed from 50x25x2.5 steel rectangular hollow section and will provide an opening for a 1500mm cubed load.
(Also see Gallery).
This is required when the load gate has heavy use
and protects the chipboard surface within the load gate area. The Wear Plate is constructed from 1500x1500x3mm
steel chequer plate with a 100mm down turn to protect the chipboard edge of the mezzanine
1 Hour Fire Rating
Depending on the size, location and use of a
mezzanine floor within a building, 1 hour fire rating may be required to the underside of the mezzanine floor.
This is achieved by using a 1 hour fire rated 1200x600mm lay in grid suspended ceiling hanging from the
underside of the floor, 1 hour fire rated column cases finished in white PVC and 1 hour fire rated fascia
finished in white PVC to all exposed edges of the mezzanine floor. (Also see FAQ).
Decking: Self Colour
Secondary Joists: Galvanised
Hand & Knee Rail: Galvanised
Handrail Posts: Blue Ral 5010 (Can be
All other Steelwork: Blue Ral 5010 (Can be