PERMANENT STRUCTURE

After years of planning and investigation, the Premod® system has evolved to the extent where it is able to provide a permanent structure whilst still incorporating the prefabricated modular panels.
The composite panels are supplied to the site, as a flat pack kit, where they are erected on an engineer designed concrete floor slab with concrete columns and ring beam on which a double pitched roof structure, with clad gables, is erected. The building of the structure is carried out by approved trained erectors and local personnel.

The units are well suited for rural projects where disaster relief is urgently needed.

 

APPLICATIONS

The Premod® structures are covered by a rational design with an engineer’s certification and may vary in dimension and floor layout depending on the client’s requirements.

  • HOUSING
  • CLASSROOMS
  • COMMUNITY HALLS
  • CLINICS
  • BARRACKS

These units are permanent in structure and require property maintenance. Although the method on construction is simplified in comparison to the conventional systems there has been no loss in integrity.

The units are well suited for rural projects where disaster relief is urgently needed.

 

ADVANTAGES

  1. The panels are manufactured in a controlled factory environment thereby decreasing the opportunity of poor workmanship during construction.
  2. The on-site training and use of nonskilled local personnel.
  3. Due to the construction method there is an ability to offer a higher degree of performance compared to the conventional block building system.
  4. The elimination of small material theft as the panels are delivered to the respective site and erected the same day.
  5. Ease of material coordination and handling, the panels may be off loaded from the transport by hand and carried manually to the slab.
  6. Aesthetically appealing.
  7. A plaster-like finish.
  8. The availability of a range of optional extras:-
      • Ceilings
      • Floor finish
      • Electrical installation, distribution board, plug points, light fittings and wall switches
      • Plumbing
      • Cupboards
      • Wall Tiling
      • Roof covering may be either Concrete roof tile or Widespan sheeting.

SPECIFICATION

PERMANENT HOUSING UNIT

The Premod™ building systems is a patented construction system.

It is supplied to the site in a flat pack kit format and constructed using approved trained erectors and local personnel.

The building consists of prefabricated wall panels, erected on an engineer designed concrete floor slab and a double pitched roof structure with clad gables.

Once the position of the unit has been decided, a platform is prepared, the floor slab cast and the unit erected thereon.

The units may vary in dimension dependant on the client’s requirements.

WALL PANEL:

This is a composite panel which is constructed using 6mm fibre cement board, a .6 mm thick aluminium and zinc coated steel (AZ150) frame and filled with light weight concrete. The width of the panel may vary dependant on the final building dimensions whereas the thickness and height will be in the order of 100 and 2400mm respectively.

FLOOR:

This is an engineer designed concrete raft foundation, the design of which may vary dependant on the soil conditions.

After the platform is prepared a pre-galvanised steel framework is set out as a permanent shutter so as to receive the slab concrete, which once poured is wood floated.

ROOF:

The roof structure is manufactured using engineer designed lightweight steel trusses and purlins. The roof cover may be one of the following:-
Either 0.47mm thick centre cranked Chromadek or Colourbond widespan sheeting or concrete roof tiles.

WINDOWS:

A window panel is constructed as per the wall panel, thereafter a polymer concrete window surround with rebates is fitted, this to receive the window.

Once the unit is erected, the window is fitted into the surround.

The window is able to open at least 50% of the full window area, and glazed with 4mm glass.

DOOR:

A door panel is constructed as per the wall panel, thereafter a steel door frame is fitted. Once the unit is erected a framed and ledged meranti door is hung in the frame, using two 100mm hinges.

CEILINGS:

Should ceilings be specified then:-

This will be 6.4mm rhinoboard with pvc joiners and 75mm rhino cove cornice.

WALL STRUCTURE:

The unit consists of the following panels:-

      1. Corner panels
      2. “ T “ connector panels
      3. Window Panels
      4. Door panels
      5. Standard wall panels

These panels will vary in size dependant on their configuration which is governed by the unit dimensions.

CONSTRUCTION:

    1. The site of the unit is levelled and a platform prepared
    2. A concrete raft foundation is constructed
    3. Where the wall panels are to be placed on the slab, holes are drilled and steel reinforcing bars are epoxied in place, these will be the starter bars at the base of the concrete columns used in the structure.
    4. The panels are erected and joined together using supplied joiners, thereafter both the internal and external faces of the joints are sealed.
    5. Voids are created at each join thus providing the cavity for the formation of the concrete columns.
    6. Reinforcing rods are placed in the voids and along the top of the panels, which forms a ring beam around the unit and above the internal walls.
    7. Once the steel is placed concrete, which is mixed on site, is then pumped into the columns (voids) and ring beam.
    8. The roof is then installed, and the finishing proceeds.

PREFABRICATED STRUCTURE

  • The Premod® building systems is supplied to the site in a flat pack kit format and constructed using approved trained erectors and local personnel.
  • The building consists of prefabricated composite wall panels which are erected on one of two engineer designed floor configurations.
  • Once the position of the unit has been decided a platform is prepared, upon which the specified floor slab is constructed.
  • The units may vary in dimension and floor layout depending on the client’s requirements.

APPLICATIONS

  • HOUSING
  • CLASSROOMS
  • COMMUNITY HALLS
  • CLINICS
  • BARRACKS
  • SITE CAMPS

These units are ideally suited to emergency housing or any form of accommodation where the life expectancy of the unit is in excess of 5 years and supply and implementation is critical.

ADVANTAGES

  1. The unit offers a safe and comfortable habitable environment
  2. The panels are manufactured in a controlled factory environment thereby guaranteeing a high quality of workmanship
  3. The on-site training and use of non skilled local personnel
  4. The units are ideally suited to emergency housing where the life expectancy is in excess of 5 years and supply and implementation is critical
  5. Ease of material coordination and handling
  6. Ability to dismantle and move to another location
  7. Aesthetically appealing
  8. A plaster-like finish
  9. A range of optional extras:-
    • Ceilings
    • Floor finish
    • Electrical installation, distribution board, plug points, light fittings and wall switches
    • Plumbing
    • Upgrade of the steel windows
    • Roof covering may be either Concrete roof tile or Widespan sheeting.

PREFABRICATED UNITS UNDER CONSTRUCTION

COMPLETED PREFABRICATED UNITS

SPECIFICATION

PREFABRICATED SCHOOL CLASSROOMS

The Premod® building systems is supplied to the site in a flat pack kit format and constructed using approved trained erectors and local personnel.
The building consists of prefabricated wall panels, a steel chassis constructed floor and a double pitched roof structure with clad gables.
Once the position of the unit has been decided, the chassis with floor is then assembled and leveled and the unit erected thereon.
The classroom will have a floor area of 57 square meters with the following dimensions:
Length: 8952mm
Width: 6414mm
The veranda is excluded from this area.

WALL PANEL:

The wall panel is a composite panel and is manufactured by cladding a 50mm steel “C” section frame with 6mm fibre cement and filling same with a light weight concrete filler, thereby giving the wall an overall thickness of 62mm. The panels, when erected, are connected by way of a 65mm extruded PVC “H” section.

FLOOR AND CHASSIS:

The chassis is built using pre-drilled pre-galvanised lip channel.
This is bolted together on site and placed on precast concrete bases.
The bases are then adjusted so as to provide a level and stable floor base for the unit.
The floor, 21mm shutter board, is then screwed to the chassis. Prior to assembly a bituminous water based emulsion is applied, as a protective coat, to the underside of the floorboards.
Once the unit has been erected, the floor is covered in vinyl tile or sheeting, 2.5mm thick, which is then sealed with a sealant or two layers of floor polish.

ROOF:

The roof structure consists of light weight steel trusses with steel purlins, to which 0.47mm thick Chromadek or Colourbond widespan sheeting is affixed. The gable ends are clad with 6mm fibre cement board and the rafter ends are closed using an inverted fibre cement barge board.
The roof will extend over the veranda and the trusses will be supported on a 75x50x20x2mm pre-galvanised lip channel which will be affixed to three 76x76x2mm adjustable posts.

WINDOWS:

A window panel is constructed as per the wall panel with a steel pivot cottage pane window built in.

The window is able to open at least 50% of the full window area, and glazed with 4mm glass.
Each classroom has five window panels in its construction.

DOOR:

A door panel is constructed as per the wall panel with a meranti door frame built into it. Once the unit is erected a framed and ledged meranti door is hung in the frame, using two 100mm hinges.
The door is fitted with:
a three lever lock set with two keys provided, a rubber door stop to the inside so as to prevent the door hitting against the walls, and a sweeping rubber door gasket so as to prevent the ingress of wind-blown dust and sand.
Each classroom has one door panel and door.

VERANDA:

A 1.2m wide veranda, running the full external length of the entrance side of the unit (8952mm), is included in the design of this structure.

CEILINGS:

Ceilings, with a height of 2.4m above floor, shall be provided to both the classroom and the veranda.

RAINWATER GOODS:

The unit is fitted with standard PVC rainwater gutters and downpipes, appropriately bracketed and levelled.
The gutters are supported by way of gutter brackets and these are fitted to the unit with a maximum spacing of 800mm between each.
There are four downpipes which are attached using three holder bats.
750mm precast concrete channels are placed at the bottom of each downpipe so as to direct the flow of water away from the unit.

ELECTRICAL:

Internal power shall be distributed by means of an enclosed distribution board, suitably rated circuit breakers and an earth-leakage unit.
All units (single or multiple) shall be provided with their own Distribution Board and each Classroom shall have:-

  • 1 – Light switch
  • 4 – 4 foot double fluorescent tube ceiling mounted lighting
  • 1 – External wall mounted bulkhead light on the to the side of the entrance door
  • 1 – 16A double socket outlet at the front of the classroom.
  • 1 – Earth Leakage Unit.

All external exposed wiring shall be housed within suitable PVC conducting. All internal wiring shall be contained within 16mm PVC conduit installed in the wall panels or within 40mm x 16mm compact PVC trunking.

FITTINGS:

All classrooms shall be fitted with:
two 1800mm x 1140mm chalkboards at the front of the classroom complete with a steel chalk rail for the entire length of the chalk board,
two 2400mm x 1200mm framed pinning boards mounted on the back wall of the classroom, and
a 4.5kg wall-mounted Dry Chemical Powder Fire extinguisher, mounted next to the door together with the associated internal and external fire signage.

POSITIONING:

The placing and orientation of the building shall be according to the layout plan, or, in cases where such layout plans have not been provided, to the Employer’s satisfaction and confirmed in writing prior to erection. The topography of the land needs to be within certain limits as the quotes submitted prior to a physical inspection allows for a day to level prior to the assembly of the floor chassis.

SERVICES:

External service connections shall be made available to the unit.

GUARANTEE:

All units shall be guaranteed for a period of 12 months against defective materials and workmanship.
This guarantee does not provide for maintenance.

NOTES:

The classroom may be supplied as a permanent structure using the Premod design for permanent structures.
Both the prefabricated and permanent units carry an Engineer’s rational design certificate.
The unit may be erected on a concrete floor with a paved veranda.


PREFABRICATED VIP UNIT

The Premod™ building system is supplied to the site in kit format.
The building consists of prefabricated wall panels, erected on a precast concrete floor base with a fibre glass roof.

SPECIFICATION

KIT:

The kit comprises of the following:-

  • Two 1200mm side panels
  • One 900mm back panel
  • A prefabricated concrete floor slab
  • Roof structure including an angle iron frame
  • Toilet
  • 110mm PVC vent pipe 2400mm long with bracket
  • 250ml touch up PVA and 25mm brush.
  • Tube silicone

WALL PANEL:

The composite panel consists of, a frame constructed of 0.55mm thick aluminium and zinc coated steel (AZ150), rolled to form a 20 x 40 x 20mm “C” section, this is clad with 4mm Fibre Cement on both sides and then filled with a light weight concrete filler. The overall thickness of the finished panel will be approximately 50mm with a height of 2100mm. The panels are painted with a PVA paint prior to despatch.

FLOOR:

This consists of a prefabricated concrete panels of the following dimensions, 1500 x 1050 x 60mm. Fittings to receive both the toilet and vent pipe are cast into the slab.

ROOF:

A purpose made fibreglass roof affixed to a 50mm galvanised steel angle frame which it bolted to the top of the wall panels at the front and back of the side panels, using 6mm bolts.

Door:

A galvanized steel chawl door on a 16mm pivot hinge with a pvc spring loaded barrel catch.

CONSTRUCTION:

  • The pit is constructed.
  • The floor slab is placed on the top of the pit
  • The wall panels are then placed on the base and bolted to same.
  • The back panel is positioned between the side panels and these are bolted by way of 6mm bolts to the back panel.
  • The angle iron frame, with the roof affixed, is then place atop the panels and fixed with 6mm bolts to the front and back of the side panels.
  • The joints between the panels are then filled with the silicone.
  • Paint touch ups complete the process.