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  What is PlaswallTM?
  PlaswallTM is the first in a line of world-class building systems called Fabforms.
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Frequently Asked Question
 
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Is Fabtech PlaswallTM recommended for multi-storey structures?
 
Fabtech PlaswallTM is an avant-garde technological product. After considering the seismic zone of the location, structures up to 9 storeys can be easily constructed with single layer reinforcement. Any structure above 9 storey of unassailable strength can be constructed keeping conventional columns and beams and Fabtech PlaswallTM can be used as an in-fill.
   
Fabtech PlaswallTM Shear Wall is solid concrete. Is Fabtech PlaswallTM heavier than brick work?
 
Fabtech PlaswallTM is an innovative technological product, while it has almost 40% more cement density, still it weighs only half of the traditional brick work. This enables the user to set more walls of greater strength in the given time thereby promoting speedy construction without compromising on the quality.
   
What is the life of Hardie-Flex Board?
 
Hardie-Flex Board is a product essentially made out of Portland cement and cement products lasts for decades is an open fact. This board has been developed after intensive research and it completely forbids water permeation, thermal transmission and UV rays penetration. The structures formed from Fabtech PlaswallTM have 5 times longer life and durability than any other form of construction.
   
Can we apply Architectural mouldings and claddings on the Fabtech PlaswallTM
 
Yes. Fabtech PlaswallTM are custom manufactured modular walls to suit any design or architectural requirement.
   
What is the recommended paint for Fabtech PlaswallTM surfaces?
 
Painting of Fabtech PlaswallTM is as simple as traditional walls. Any paint which goes with conventional walls can be applied on Fabtech PlaswallTM surfaces as well. However we recommend latex based paint which will last 5 times more than any other paint on Fabtech PlaswallTM. The chances of peeling of paint are completely eliminated and also the odour of paint dissipates faster.
 
What is Fabtech PlaswallTM in terms of structural Design parameters?
 
Fabtech PlaswallTM is a lost-in-place formwork system for constructing shear wall system.
   
What International Standards the Fabtech PlaswallTM structural design conform?
 
Design Parameter American British Indian Philippines
Reinf. Concrete ACI 318M BS 8110 part 1 IS 456 NSCP 2001
Ductile Reqts. ACI / ASCE 7 BS 8110 part 1 IS 13920 NSCP 2001
Design Loads ACI / ASCE 7 BS 6399 IS 875 NSCP 2001
Seismic Parameters UBC / ASCE 7 UBC IS 1893 NSCP 2001
   
What is the minimum reinforcement for Fabtech PlaswallTM shear walls?
 
Minimum Steel Ratio American British Indian Philippines
Reinf. Concrete 4.3.2 / 3       ACI 318M:2005 3.9.4.19         BS 8110-1:1997 9.1.4.2      IS 13920 414.4.3 NSCP 2001
   
What is the Grade of concrete for Fabtech PlaswallTM shear walls?  Grade of Reinforcing bars?
 
Usual American British Indian Philippines
20 Mpa Concrete ACI 318M BS 8110 part 1 IS 456 NSCP 2001
To  30 Mpa Concrete ACI 318M BS 8110 part 1 IS 456 NSCP 2001
Fy=227 Mpa (Reinf.) Allowed Not available Not available Allowed
Fy=276 Mpa (Reinf.) Allowed Allowed Not available Allowed
Fy=413 Mpa (Reinf.) Allowed Allowed Allowed Allowed
Fy=415 Mpa (Reinf.) Allowed Allowed Allowed Not available
Fy=460 Mpa (Reinf.) Allowed Allowed Allowed Not available
Fy=500 Mpa (Reinf.) Allowed Allowed Allowed Not available
Fy=550 Mpa (Reinf.) Allowed Allowed IS 1893 Not available
   
What maximum Axial Load Fabtech PlaswallTM can carry?
 
Usual American   KN/m British KN/m Indian KN/m Philippines KN/m
100mm Thickness 179.79 214.08 214.08 192.55
M20 Conc.; 2.70m Ht. 199.59 267.60 267.60 214.94
M25 Conc.; 2.70m Ht. 218.38 321.12 321.12 235.18
150mm Thickness        
M20 Conc.; 2.70m Ht. 600.00 612.72 612.72 646.16
M25 Conc.; 2.70m Ht. 670.18 765.90 765.90 721.73
M30 Conc.; 2.70m Ht. 733.62 919.08 919.08 790.06
   
Is Shear wall design eliminates columns and beams completely?
 
Yes.  Columns and beams are eliminated.  Every wall is a shear wall.  However, Fabtech PlaswallTM integration with columns / beams can be provided as per structural Engineer recommendation.
   
What is the recommended foundation type for Fabtech PlaswallTM?
  • Raft foundation is the most efficient type, considering cost and time.
  • Plinth height of 150-200mm from the outside ground level.
  • Project location as per labor cost rate and/or equipment availability.
   
How raft footing is better than Isolated footing?
 
• Raft Footing spreads the vertical load to wider area than isolate Footing.  Meaning raft footing    is more economical.
 
• During shrinkage,  Raft footing settle together with the whole structure.  While isolated footing    settle individually.  Individual settlement of footings, causes wall cracks.
   
What minimum soil bearing capacity (SBC) can be tolerated?  Is backfill of sub-grade tolerated?
  • Minimum SBC required depends to the actual load calculated.
  • For Raft Footing, 75 Kpa is tolerable having structure <= G+2.  Width of the grade beams are    adjusted to meet the requirement.
  • Lesser than 75 Kpa SBC, we prefer to utilize strip or Isolated footing.
   
How concrete honeycombs in Fabtech PlaswallTM are prevented?
 
Honeycomb is a workmanship problem.

Shear Walls by Fabtech PlaswallTM, are designed using single layer of reinforcement unless required thickness reaches 200mm and above.  Such, chance of honeycomb is prevented.

Concrete slump is raised to 175 to 200mm (Water Cement ratio is adjusted AND Mix retention requirement).  Rubber mallet or pencil vibrator, is used for Vibrating on Fabtech PlaswallTM surfaces during concrete pouring to avoid honeycombs.

All the processes above, we are observing the precaution of the codes regarding over vibrating of very wet mixes:
  Code related Sections :
 
American 5.10 ACI 318M 2008 General Requirements only
British 6.2.2BS 8110-1-1997 Recognition of Permanent Formwork
Indian 13.3.1 IS 456:2000 Guide for Very wet concrete mix
Philippines 405.11 NSCP 2001 General Requirements only
   
Why Fabtech PlaswallTM system (Walls only) does not require wet curing?
 
As per leading International Structural Codes,  wet curing is needed for exposed concrete surfaces.  Since Fabtech PlaswallTM is a lost-in-place formwork, wet curing is no longer needed because moisture is retained inside.
   
Fabtech PlaswallTM requires special formwork, shuttering or heavy equipments?
  • No. Just diagonal bracings for vertical alignment.
  • Suspended slab shoring is minimized compared to traditional slabs.
 
• No need for investment of plywood, aluminium or steel formworks. All existing equipments can   be utilized in Fabtech PlaswallTM. It also saves on the warehousing & maintenance cost of steel &   aluminium formworks.
   
What slab system is applicable for Fabtech PlaswallTM system?
  • Steel deck sheet reinforcement.
  • Joist Slab system.
  • Precast hollow core.
  • Integration of Conventional (one way, two way, cantilever).
   
What roof framing recommended for Fabtech PlaswallTM system?
  • Any form of Roof framing applicable to traditional construction.
 
• For Efficiency reason, we are recommending  Light Gauge framing sloped roof.  Expensive cost   of concrete roof and usual leaks, are substantially minimized.
   
Is Fabtech PlaswallTM recommended for multi-storey structures?  Up to what height?
  • There is no limit if used as an in-fill.  The same use of CHB or Bricks.
 
• If without columns and with single layer reinforcement, until the walls have no tension load.    Approximately 6-9 storey depends to seismic zone of the location.
   
Is it possible to make opening on shear walls or demolish portion of them?
 
• Yes.  Providing window openings or door to > 4m length solid shear wall is possible as per   prior approval of the structural Engineer.
   
   
   
 
 
 
 
 
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