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Fiberglass Fabrication How

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Fiberglass Fabrication How
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Featured Article: Fiberglass Fabrication How:

Sheet Piling is a different form of driven piling which is done with think interlocking sheets of steel. This is done to obtain a consistent barrier in the ground. The steel sheet piles that are carved out of this process get used in retaining walls and cofferdams erected for permanent proceedings. The tools that are used in the process of sheet piling are namely Crawl Drilling, T-Crane and Vibrating Hammer. The walls that come out of sheet pile retention find their place in tight spaces and soft soils. The sheet pile walls get made out of steel, vinyl and wood planks. These are further driven into the ground. To be precise, the material is usually put around 1/3rd above the ground and 2/3rd below the ground and can also be altered depending upon the requirements. These piles vary in size. The taller ones would require a tie back anchor, which gets placed in the soil at a certain distance behind the front of the wall.

Sheet Piling comprises of a series of panels with interlocking connections. These connections are directly driven into the ground through vibratory hammers and impact objects to further form an impermeable barrier. Apart from steel, vinyl and wood planks, some of the other material from which sheet piling can be done include the likes of plastic, recast concrete and fiberglass. The process has been proven and talked about very highly within the construction business for more than a decade, with the addition of vinyl sheets being the icing. The vinyl sheets have had a huge hand in ensuring the repression of contaminated groundwater flow in the environmental sector.

This process has come very handy in ensuring that the walls have remained extremely robust and the whole construction sector has retained its efficacy. The sheets have had a very important role to play in wall erection and in their strengthening. Be it soft soil or tight spaces, the sheets have always counted a lot and have been very instrumental in toughening up the whole edifice. The vigor and toughness they provide is exemplary and their addition has only resulted in better things happening. The variety in sizes has been further instrumental in their addition becoming more important. The process is very vigorous and takes a lot of effort to be put into place. It ensures that everything is worth it and the whole thing turns up well too.

Get best sheet piling specialist in UK at best rate. Visit Miniape.com and get sheet piling done by our experts also offering sheet piling for custom purpose.

Alkali resistant fiberglass mesh fabrics:everything you would like to know

2nd part

please read 1st part here

Mesh dimensions and uses (continues…)

 

Mesh dimension 3x3mm: Used mainly for the preparation of cement boards.

 

Mesh dimension 4x4mm: Depending on the weight this item has more than one uses.

At a weight of 160gr/m2 this is the commonest fiberglass mesh fabric to be used as an integral part in EIFS or ETICS.

At a weight of 80-100gr/m2 it is used for the reinforcement of ready to use plasters in the interior.

 

Mesh dimensions 5x5mm or 6x6mm: These alkali resistant fiberglass mesh fabrics are used to reinforce prepackaged plasters in the interior.

Usual weights: 80-110gr/m2.

 

Mesh dimensions 10x10mm to 12x12mm: These types – usually colored – are used to reinforce in situ produced stuccos/renderings and screeds.

Usual weights: 110-200gr/m2. They are used for interior and exterior applications.

 

Finally there are the “panzer” type fiberglass mesh fabrics which are extremely strong and come at weights usually more than 300gr/m2.

They are used to reinforce renderings against impact in public buildings. Typically they have more than one yarns in the warp direction.

 

6. Tensile strength is one of the most important criteria we use in order to choose an alkali resistant fiberglass mesh fabric. It’s expressed in N/5cm units calculated for both directions.

 

7. Tensile strength after immersion in a strongly alkaline solution – usually a 50% concentration solution of NaOH – is very critical. This test is a simulation of the influence of lime/cement on the mesh. It gives a safe prediction for the future behaviour of the fiberglass mesh fabric in the real world strongly alkaline environment of stuccos/renderings or other cement mixes.

The remaining tensile strength should be at least the 50% of the initial.

Different norms prescribe the minimum remaining tensile strength a mesh should have depending on its end use.

 

8. Kind of weave: For most alkali resistant fiberglass mesh fabrics a type of a leno  weave is used. Leno weave is used to improve the stability of fabrics with low fiber count.

According this weave type, two adjacent warp yarns are twisted around the weft yarns and lock them securely to form a stable grid.

 

9. Material Linear Density: It is calculated for both the weft and warp directions and is expressed in TEX units.

When we say that a yarn is TEX 200, we mean that 1000 linear meters of this yarn weigh 200gr.

If we say that a yarn is TEX 200 x 2, this should imply a two ply yarn.

Higher Material Linear Density means a stronger yarn, with a higher tensile strength.

 

10. Many alkali resistant fiberglass mesh fabrics are coloured with different colors. This happens during the procedure that renders the yarns alkali resistant. A special dye is added in the solution used to treat the fabric.

Colors are of course only for aesthetical reasons.

 

11. Alkali resistant fiberglass mesh fabrics gradually replace metal lathing in the majority of their applications. For a comparison between the two products, please check the folloing article on  articlesbase:

ALKALI RESISTANT FIBERGLASS MESH FABRICS VS METAL LATHING

 

12. Most manufacturers recommend the placement of meshes somewhere in the middle third of the stucco/plaster thickness.

In this region, the nearer the mesh to the substrate, the better.

 

13. There is no need for mechanical fixing. The mesh is layed between two successive layers of the cement mix. A minimum overlap of 10cm between two adjacent layers of the mesh is indispensable.

Utmost care should be taken to avoid blister and crease formation. The mesh fabric is pressed gently from the top to the bottom in the fresh plaster.

 

14. Main uses of alkali resistant fiberglass mesh fabrics:

They are used to reinforce plasters/stuccos and prevent cracking in cases such as:

 

* EIFS or ETICS

* above insulation materials

* above wire channels

* diagonally above doors and windows

* joints between heterogenous materials

* screeds over sound insulation materials of floor heating systems.

 

Finally they are used to increase the impact resistance of rendering in public building.

 

 

Chris Strogilis

Civ. Eng. – MBA – DipM

 

http://maconwaterproofing.blogspot.com

About the Author

Civil engineer with postgraduate studies in MBA and Marketing

I want to build my own fiberglass body for a hot rod project....?

Are there any websites that could help me figure out how to make a mold?

I'd also like to read up about how to make it with good quality.

I've got a well stocked garage, and many years fabrication experience.

Any help at all would be greatly appreciated.

Check out www.kitcarbuilder.com.
You can ask the editor by email this very question and he/she will direct you to some great books on the subject. I actually purchased one at the Carlisle Kit and Import Car show years ago but I can't seem to put my hands on it now. It was very dated but the techniques are solid and can still be used today.

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