Curtain Wall Design Tips For Water Penetration & Condensation

Designing curtain walls to water penetration brings huge benefits for maintaining the security, thermal performance and comfort of the structure and residents.

The rain caused by wind and condensation create huge issue and it becomes complicated to handle when curtain wall is designed together with gravity, kinetic energy, capillary action and surface tension and the chances are enhanced for water ingression.

Get the detailed information on the design of curtain wall against the infiltration of water and condensation.

Design of Curtain wall for Water Infiltration and Condensation

• Wind driven rain and the possibility of water ingression
• Design of curtain wall to control water penetration
• Design of curtain walls to control condensation

Wind driven rain and possibility of water ingression

There are five different types of forces such as that contribute either partially or as a whole to the ingression of water may occur due to existence of five various types of forces like gravity, kinetic energy, capillary action, surface tension and air pressure difference.

The curtain wall is capable of resisting forces that enhances the chance of water penetration. It is dependent on glazing details, drainage details, frame construction, weather stripping and frame gaskets, perimeter flashings and sealings and interior sealants.

Wind loads create differentials pressure that may cause windblown rain. It exceeds gravity force and as a result forces water to stir ascending.

Surface tension properties and capillary effect of curtain wall elements are significantly impacted with thermal expansion of various building materials.

As for example, expansion or contraction of materials because of temperatures may tight expansion joints extremely and ultimately raise capillary action among different components of the curtain wall.

The surface tension properties of curtain wall may fluctuate because of contraction and expansion and bring about unwanted results. So, it is necessary to design movable joints, seals and gaskets to accommodate differential movements among various members.

To learn how to make design of curtain walls to manage water penetration, click on the following link theconstructor.org

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Published By
Rajib Dey
www.constructioncost.co
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Structural Insulated Panels (SIPs) And Its Properties

Structural Insulated Panels (SIPs) is a great substitute for R-30 (or higher) walls toward single and multifamily construction.

SIPs belong to a manufactured “sandwich” panel which are formed with two exterior faces of oriented-strand-board (OSB) wrapped with a core of stretched polystyrene foam insulation (EPS).

Based on the manufacturer and the needed properties of the final wall system, the material contained by the outer faces and the foam insulation core can differ. Alternate insulation cores consist of extruded polystyrene (XPS), polyisocyanurate and polyurethane. Besides OSB faces, there are other materials like plywood, straw board, and cement board.

Panels containing interior gypsum board or tongue-and-groove pine boards are also obtainable but these may be easily spoiled in transit. So, proper care should be taken while installing & handling them. The complete thickness of the foam core (and thus the R-value attained) is also adjustable and is normally available in dimensions.

Typical foam-core thicknesses are 3-1/2”, 5-1/2”, 7-3/8”, and 9-3/8”.

The complete, nominal R-value of a SIPs wall is a function of its thickness and the type of core insulation applied. Usually EPS foam is R-4 per inch, XPS is R-5 per inch, and polyisocyanurate and polyurethane are roughly R-6.5 per inch (the higher R-value cores are consistently more costly).

Building Design and Planning Considerations

In order to install SIPs successfully in a building project, proper plan should be set up to make the project panel-friendly.

Therefore, the design of the building should be simple in form devoid of any unnecessary jogs, bump-outs, non-90 degree angles, as well as the envelope openings are arranged to match with panel dimensions.

SIPs are applied virtually to any house design, but with a non-panel friendly plan, the amount of waste, internal posts, headers and structural panel slice lumber will rapidly count reducing the cost and performance advantage of a more improved design. The utilization of standard heights is correspondingly crucial in managing costs and eliminating waste. The availability of the largest panel is 8’ x 24’ (on the basis of the limits of obtainable OSB manufacturing), SIPs positioned horizontally contain a extreme wall height of 96”.

Similarly, SIPs positioned vertically contain a maximum width of 96”, but can be applied with full height to attain 8’, 9’, or even 10’ high walls.

Due to its more inflexible nature, cement board SIPs are more limited in dimension as compared to OSB SIPs, with usual sizes of 3’ x 8’, 3 x 9’, and 3’ x 10’ and are therefore always positioned vertically.

For more information, click on this link

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Published By

Rajib Dey

www.constructioncost.co

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