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12.09.2014
David Chatterton is a SACAP & SAIAT Registered Professional Architectural Draughtsman (PrArchD). We provide services in the western seaboard & northern suburb areas offering architectural services. A visit will be made to your home were ideas and suggestions can be discussed to ensure you achieve the right outcome.
DISCLAIMERThe purpose of this section is to provide design guidance for designing high performance assemblies. We will send your comments, along with a link to this page, to the appropriate project members. Revised by the Chairs of the Building Enclosure Councils with assistance from Richard Keleher, AIA, CSI, LEED AP and Kenneth Roko, AIA of The Facade Group, LLC. The foundation wall of a building may be a cast-in-place concrete retaining or basement wall or a structural wall complete with load-bearing pilasters.
Readers are advised to obtain expert advice when designing systems which are below the water table or which are enclosing particularly vulnerable occupancies.
This section provides specific description of materials and systems common in foundation walls and below grade building enclosure systems in general.
Aggregate Drainage Layers—Aggregate drainage layers include graded pea-gravel aggregate or coarse sands. Prefabricated Synthetic Drainage Layers—These products consist of a combination of plastic composite drainage cores with adhered geotextile fabrics. Design considerations include selecting an appropriate design to achieve the required flow rate. Geotextile filter fabrics are also used for separating differing soil types in below grade enclosure applications. Dampproofing is intended to control vapor diffusion through the foundation, which can contribute to damp conditions on the interior. Waterproofing membrane systems are available as either post-applied or pre-applied products for use in either positive-side, negative-side, or blind-side applications. Fluid-Applied Systems—These systems include urethanes, rubbers, plastics and modified asphalts.
Sheet-Membrane Systems—Sheet membranes used in foundation wall applications include thermoplastics, vulcanized rubbers, and rubberized asphalts. Bentonite Clays—These systems include composite sodium bentonite systems with HDPE liners and geotextile fabrics, which are more common and more effective than the traditional systems.
Cementitious Systems—These systems contain Portland cement and sand combined with an active waterproofing agent. Waterproofing should be applied a minimum of 12" above finished grade, and then applied to a point 12" below the top surface of the interior slab on grade. If the exterior wall materials will not protect the waterproofing at grade, base flashings should be used to protect the waterproofing from ultraviolet (UV) radiation exposure. In some situations, it may not be possible to apply waterproofing directly and entirely to the foundation walls, and it may be necessary to fasten a "lens" membrane to the foundation wall to catch runoff and redirect it away from the foundation. Protection Boards are used to shield waterproofing membranes from construction damage, damage from backfill materials in service, and ultraviolet radiation.
In general, using prefabricated composite drainage board directly against certain waterproofing membranes as a protection layer is not recommended.
Insulation materials used in below grade enclosure applications are primarily limited to rigid extruded polystyrene board due to the need for high compressive strength and moisture absorption resistance. Waterstops should be utilized at construction joints in below grade walls, footings, slabs, and other elements where a waterproof system is required.
Although not as common, pre-installed permeable grout injection waterstop may also be considered. Drainage pipes, typically 4" or 6" in diameter, used in below grade systems are primarily made of corrugated PVC or polyethylene and in some cases of porous concrete.
All drain tile piping should be laid onto large, river-washed aggregate stones, which is laid onto a filter fabric, which should be wrapped around and over the drain tile to try to prevent fine soils from filling the drain tile. Structural Support Functions—The foundation wall system of the below grade building enclosure must be designed and constructed to support both vertical and lateral loadings. Vertical loads exist from the dead, live and lateral loads from the structure and the wall itself.
Lateral loads on foundation walls exist from the soil, surcharge and hydrostatic pressure loads.
In many cases the foundation wall is required to resist all of these loads directly with the wall designed as a cantilever retaining wall with a large base footing or as a basement wall spanning vertically between the foundation element and supported floors. Special loadings such as blast loads are a design consideration in parking areas under and next to buildings. Environmental Control Functions—The exterior environment that the foundation wall is subjected to includes environmental control loadings such as thermal, moisture, tree roots, insects, and soil gas. Likely, the most predominant environmental control loading for foundation wall systems is moisture. Moisture that penetrates through the upper screen needs to be directed to the exit drain located at the base of the foundation wall. In many foundation wall situations with low water table elevations, the combination of the upper screen, the exterior drainage system, the near surface drainage system and the exit drain will control the majority of the water. Even when it is necessary to apply a waterproofing membrane, it is recommended to also utilize a system approach including components of exterior drainage system, near surface drainage system and exit drain. Thermal considerations are of limited concern as one gets deeper down on the foundation wall as there is a constant, thermal design condition on the exterior. The higher soil temperatures on the exterior also create the need to provide at least a damproofing on the exterior of the foundation wall to resist the strong interior vapor drive.
Finish Functions—Two areas of finishes are of importance in relation to foundation walls. Distribution Functions—Foundation walls may contain distribution systems such as electrical and electronic runs. Many areas around a building's perimeter at grade are subjected to high amounts of surface runoff from the high use of fenestration and impermeable wall facade materials, such as thin stone and EIFS. Important design considerations include sloping the surface away from the structure, providing a suitable drainage system from the upper screen through the granular backfill, and a synthetic drainage layer that extends down to the perimeter drain. Drainage pipe at the perimeter of the foundation wall should be surrounded by a free draining granular material that is wrapped in filter fabric to prevent fines from filling in the porous spaces of the granular material. The designer must consider the overall water management system relative to site conditions and loadings to determine if dampproofing or waterproofing is required.
For waterproof systems the first consideration is whether to use positive or negative side waterproofing.
Depending on site conditions and depth of the foundation wall, positive side waterproofing can either be installed from the exterior or directly to the lagging in a blind-side application prior to placing concrete.
With fluid membrane systems, proper application in terms of coverage and thickness is critical to performance, and this should be monitored throughout the installation. In blind-side (positive-side, without access due to tight lot lines, under slabs on grade, or other reason) waterproofing assemblies, products may include sheet materials of thermofusible HDPE or PVC, bentonite, or other similar proprietary sheet products. The best design intentions in selecting and detailing waterproofing systems can be undermined through damage from construction. When designing the thermal, protection, and drainage elements to the exterior of below grade foundation walls, a slip plane should be introduced vertically within the assembly. Of critical importance in any building is the proper detailing and integration of the vertical building facade system and the below grade building system. Façade terminations often produce the accumulation of moisture at or near the grade line of the building with the surrounding area.
Condition appraisals and trouble shooting of below-grade structures reveals common sources of leakage that occur at penetrations.
Isolation, insulation and waterproofing of certain piping that undergoes large temperature changes are often underestimated for resulting movement. Common knowledge suggests that the seals serve as a back-up function and that avoiding moisture build-up is the principle objective for obtaining a leak free building at penetrations.
Wall expansion joints should be designed to accommodate the anticipated structural movement. Construction joints have been effectively treated in most applications by a waterstop manufacturer's recommended details. The details associated with this section of the BEDG on the WBDG were developed by committee and are intended solely as a means to illustrate general design and construction concepts only. The details, graphics, and related information shown in the details are intended to illustrate basic design concepts and principles only and should be considered collectively with the appropriate narrative sections of the Whole Building design Guide (WBDG). NOTE: Photographs, figures, and drawings were provided by the original author unless otherwise noted.
Number of 50mm Panels per Pallet = 23 panels Pallet Weight:- 940kg (approx) (± 20 kg safety factor). The Thermal performance of the QT EcoSeries Wall System is calculated in accordance with AS 2627.1 Thermal Insulation of Dwellings.
QT EcoSeries Wall Panel when coated with a cement base render, can provide resistance for hard body impacts typically found under normal situations. (Refer coating manufacturers for details).
In normal conditions and when maintained properly in a weatherproof condition, the cladding systems should exceed 30 years of trouble free serviceable life. The panels will not support growth of micro-organisms such as fungi or bacteria and do not hold any nutritional value for ants or rodents. Cavities form an important role in the weather tightness and life cycle of any wall system QT EcoSeries Wall Panels constructed without a cavity will void any warranty. Vapour permeable sarking must be installed to the face of the building framing prior to installation of the battens and panels. On the first horizontal course (ground level) weep holes are to be installed at centres not exceeding 1200mm immediately above any damp proof membrane or flashing.
Ensure service pipes and wires are fixed or checked into the frame and not laid loose in the extended wall cavity. Voids or gaps created by service penetrations through the exterior wall require weatherproofing and or waterproofing. Use an exterior grade weatherproof sealant for exterior wall construction and as a general-purpose gap filling.
Priming (to prevent ‘roll-back’ of sealant) and sealing procedure stage requires extreme attention to detail to ensure water tightness of all windows, doors and openings. Using Bostik Primer 5077, and a clean rag, dampen cloth with primer and quickly clean the internal joinery to NRG line that is to be sealed.
Using masking tape, accurately adhere to frame of joinery, 4mm form edge creating a neat parallel margin, ready for sealant application. Install external corner angle bead to external corner edges by applying a ‘liberal’ bead of Bostik ‘No More Nails’ to both sides of internal corner rails of the external corner angle bead, then press bead firmly into position.
Allow 3mm gap between Greenboard panel and openings (this will provide a ‘key’ for the sealant).
Prime and tape around aluminum surfaces of window and door component edges prior to rendering, apply a bead of sealant into the ‘gap’ between the Greenboard and the component edge. Allow 3mm gap between Greenboard panel and openings (this will provide a ‘key’ for the sealant). Prime (using Bostik Primer 5077) beads and tape around surfaces of windows and doors in readiness for application of the texture painting system. Allow 3mm gap, prime beads and tape around surfaces of window and door edges prior to sealing readiness for application of the texture paint system. Expansion Joint - there are two options available – Either by using Reveal Beads or Render Expansion Joint.
Prime (using Bostik Primer 5077) both top and bottom outside exposed edges before applying sealant thus creating an ‘expressed’ joint as shown. Prime (using Bostik Primer 5077) within the ‘flexible’ joint, before applying the sealant thus creating an ‘expressed’ joint. Installation Procedures of NRG Greenboard™ Walling System over Concrete and Masonry Wall Surfaces.
All walls must be clean and dust free from dirt, oil, vegetation, and crumbling or loose materials. Position the board and drill 8mm hole through the masonry at each corner offset in by approx 100mm.
Use a minimum of 8 IDP anchors for each 2500 x 1200 board with at least 2 x IDP anchors staggered in the mid section of the board. NRG Greenboard™ should not be stored in the open or fixed to a building for prolonged periods.
When cutting NRG Greenboard™ Insulative Walling System with a power saw it is recommended that a face mask and protective glasses be worn. Suggestion, place NRG Greenboard™ off-cut (waste) into western wall cavity, this will add additional insulation. General Construction and Flashing Principles must be adhered to in maintaining water tightness. Termite Barriers: It is the builder’s responsibility to arrange the installation of a suitable termite barrier system by a qualified professional installer, prior to the installation NRG Greenboard™. The Product must be installed and maintained strictly in accordance with the relevant NRG Specifications current at the time of installa-tion and must be installed in conjunction with the components or products specified in the specifications;  To obtain copies of such specifications, contact NRG Building Systems on 1800 674 001. NRG will not be liable for any losses or damages (whether direct or indirect) including property damage or personal injury, consequential loss, economic loss or loss of profits, arising in contract or negligence or howsoever arising. If meeting a claim under this warranty involves re-coating of Products, there may be slight colour differences between the original and replacement products due to the effects of weathering and variations in materials over time. The recommendations in NRG’s specifications manual are based on good building practice, but are not an exhaustive statement of all relevant information and are subject to conditions (iii), (iv), (vi) and (vii) above. Disclaimer: NRG Building Systems has endeavoured to produce this manual taking into account good building practices and experience gained over many years.
NRG Greenboard™ is comprised of 98% air and therefore only 2% polystyrene making it a highly efficient use of raw material.
No CFC’s or HCFC’s foam agents are used in its manufacture, so NRG Greenboard™ causes no damage to the ozone layer. The R-value of NRG Greenboard™ does not deteriorate during its life time; therefore the reduction in emissions lasts the full lifetime of the building. The energy used to manufacture NRG Greenboard™ is recovered within six months by the energy saved in the building in which NRG Greenboard™ is installed.
Typically, for every kg of oil used in NRG Greenboard™ manufacturing, about 200kg will be saved in reduced heating demands. Submit Your Project If you have a house interior design and you want it to be displayed in this site, please do not shillyshally to advise us.
You can play around with the Greenpix simulator online, which converts Quicktime films to the Greenpix format for an idea of the impact of the giant media wall. Please note that gratuitous links to your site are viewed as spam and may result in removed comments. First of all, I totally agree with you that the current chinese government is not that good to win the heart of everyone, especially those western people who respect 'human right' above anything. I have been to both Tibet and China and have spent considerable time living in Tibetan refugee settlements in Nepal and India.


My observation of architects is based upon several personal conversations I have had with architects working in China and several key note addresses at conferences that I have attended.
May you have the courage to open your mind and to see that criticism of the Chinese Government is not the same as criticism of Chinese people or culture. How many of these wonderful (useless) green devices will be needed to block the views of the 500+ new coal-fired power plats that China is planning to build?? Interesting concept, just can\'t help but think about Tibet though and Chinese people who have had their homes etc destroyed because of the Olympics. It's all very well for Vegas or a strip joint, otherwise its a hazard for drivers, or will end up being a cause for epilepsy, and will certainly lead to the largest garish advertising ever. Interior wood wall designs consist of amazing design which is totally good for your design inspiration. Wood panel for wall abbott moon probably good design alternative for your design hint, it's has comfortable character against unrefined design theme and element selection. Beautiful stone panels over a concrete block backup system create a sophisticated and long-lasting exterior for important buildings. Continuous concrete masonry backup permits anchor attachment anywhere within the field of the wall. When masonry veneer is used in areas of high seismic risk, veneer ties are required to attach to wire reinforcement embedded in mortar bed joints in the veneer. Structural masonry walls in areas of high seismic risk are required to have additional horizontal bond beams to resist seismic loads.
The use of reinforced bond beams can replace the necessity for joint reinforcement in concrete masonry walls.
Be very careful using epoxy connections where they will be subjected to sustained tension loads – many epoxies will creep and fail over time. Be careful using thin stone panels, which are prone to breakage and will require more anchors than a thicker panel. Sealants can bleed into surrounding stone – check with the stone supplier and sealant manufacturer for recommended sealant types and advice on preparing joint surfaces to receive sealant. Use stainless steel hardware for attaching stone panels to the backup structure to minimize corrosion and stone staining. Isolate dissimilar metals (such as stainless steel and bare steel) with plastic washers or other similar materials to prevent galvanic corrosion. Fill anchor slots in stone slabs with flexible caulk after placement to prevent water fro collecting and cracking the stone. Don’t fill anchor slots with gypsum cement (plaster of Paris), which can expand and crack the anchor slot. Hidden lintels installed in kerfs cut into the back of the stone lead to stress concentrations and cracks telegraphing through to the wall face. A library of quality masonry construction details from across the country that can be downloaded and used in your masonry projects.
Using a Masonry System for your next project will help you deliver a completed, structurally sound building in the shortest period of time. Want to learn more about the materials and accessories that make masonry wall systems work? Your information will not be kept in our records or used for any other purpose than to send the message.
The plastic composite "dimpled" drainage cores are available in various configurations and are typically constructed using polypropylene, polystyrene and polyethylene. This separation of differing soil types maintains flow rates of soils used as drainage layers and minimizes settlement from finer materials filling in more coarse materials.
Cementitious products are generally portland cement based and typically trowel-applied or brush-applied. Positive-side waterproofing systems are post-applied to the surface of the element that is directly exposed to moisture, typically the exterior side of the foundation wall.
Fluid-applied membranes are applied in liquid form and cure to form one monolithic seamless membrane.
Bentonite clays act as waterproofing by swelling when exposed to moisture thus becoming impervious to water. These systems include metallic (metal oxide), crystalline, chemical additive, and acrylic modified systems.
Typically, the waterproofing is wrapped over a masonry brick shelf, or up behind the finish exterior materials at grade so that it may be terminated and shingle lapped by the weather barrier.
These flashings are usually stainless steel to resist corrosion in contact with grade soils and moisture. It is recommended that a 60 mil PVC membrane or polyolefin membrane be used, set on a concave sand bed and fastened to the foundation wall with a stainless steel termination bar with standard waterproofing applied to the wall above that point. The most commonly used protection board is a semi-flexible sheet containing an asphalt core placed between asphalt impregnated glass fiber mats.
Although the composite board may have a polyethylene sheet on the membrane-side, this sheet is often cut, damaged, or missing. For optimum drainage and thermal performance, install a composite drainage board with integral filter fabric to the exterior of the insulation.
These systems provide a secondary barrier to the passage of water across these construction joints. Typically constructed with flexible PVC, permeable grout injection tubes are installed in construction joints and are injected with grout only if leakage is observed. PVC and polyethylene pipes are available in smooth or corrugated configurations and are slotted on the bottom half of their cross-section to allow water infiltration. Regarding slope to drain, drain tile is intended to be installed with some slope to ensure that the water moves toward the sump collector. Structural Support, Environmental Control, Finish, and Distribution as they relate to the below grade enclosure elements of foundation walls. Structural Support, Environmental Control, Finish and Distribution, are expanded below in general terms for foundation walls. The foundation wall may be an integral part of the load bearing design of the building carrying column and floor loads from above, either as distributed loads on the wall or point loads on pilasters integral to the wall system. Other cases may include an earth retention system, such as piling and timber lagging, facilitating construction and designed to resist the lateral loads leaving the foundation wall to resist primarily vertical loads. While the first control of these abnormal load events are through security entry control systems and restricted access, structural design considerations may also be required in the design of the foundation wall system. The interior environment that the foundation wall is subjected to includes environmental control loadings such as thermal and moisture. This is accomplished through a drainage system at the exterior of the wall that is typically a free draining granular material.
The key question that remains is whether to provide dampproofing or waterproofing to the surface of the foundation wall or not at all. The removal of the moisture in the most complete and expeditious manner will decrease the probability for intrusion of water.
In fact, in some situations, conditioned below grade spaces are subjected to a constant inward vapor drive during summer as the interior space is air conditioned, and in the winter the interior space is heated resulting in a lower vapor pressure than the exterior condition as the soil stays relatively constant in terms of vapor pressure.
Proper treatment of this area is critical in terms not only of aesthetics but also durability.
Many waterproofing membranes need to be shielded from ultraviolet radiation to prevent deterioration and as such some type of exterior finish is required. At times these systems are run internally in the interior surface finish system or in ceiling space.
The first and most effective defense against this water is to slope the upper screen surface away from the building a minimum of 5% near the building edge.
If in doubt, it is clearly prudent to err on the conservative side and provide a waterproof system. Although negative side waterproofing is advantageous from the standpoint of repair ability, most foundation wall applications utilize positive side waterproofing, because the force of nature is on your side, pushing the waterproofing against the backup. For application from the exterior, the next design decision is to use fluid applied or sheet products. The key advantage to fluid systems is their monolithic nature and self-flashing abilities as the material is applied in liquid form. In all applications, protection of the membrane and proper lapping and sealing of joints is critical.
For positive side applications, the installation of protection boards or insulation layers as quickly as possible after membrane installation is critical to prevent mechanical damage form subsequent layers and backfill and form ultraviolet radiation. Location of the slip plane may vary depending on the design; however, it should be included in all assemblies.
The drainage board should have the protection sheet on the backside of the core to promote better movement against the insulation.
The integration of the two systems requires careful consideration to insure that all moisture, air and thermal criteria for each system are satisfied at the transition interface.
A special flashing behind face stones of buildings or special flashing and treatment of the exterior slab edge where it is adjacent to ground features is required. Common practice for wall terminations or door entries is to provide slope away from the building as previously indicated. Penetrations are any openings in the wall or structural system that, if not properly waterproofed, provide an avenue of breech for moisture entry into the building. Where expansion and contraction of the services or pipes entering the building occurs, a sleeve through the wall that is discontinuous with the penetration piping is required. Notre that leakage may occur at a penetration and flow behind the waterproofing if a lateral path exists. For many membrane types, a multiple layer detailing of the membrane, proper isolation and allowance for joint detailing is generally effective for construction joints. Appropriate use and application of the concepts illustrated in these details will vary based on performance considerations and environmental conditions unique to each project and, therefore, do not represent the final opinion or recommendation of the author of each section or the committee members responsible for the development of the WBDG. The information contained therein is not intended for actual construction, and is subject to revision based on changes and or refinements in local, state, and national building codes, emerging building envelope technologies, and advancements in the research and understanding of building enclosure failure mechanisms.
Acoustic performance can be significantly increased with the addition of bulk or acoustic insulation batts. When the system is installed in high corrosion zones, such as coastal locations within distances of up to 500m from the sea, particular care must be taken to ensure that openings through the cladding panels are kept to a minimum to prevent corrosive salt aerosols from entering the wall cavity and affecting metal components. (Permitted openings are base weepholes, soffit vents and openings beneath window joinery at sills). The cavity acts as a secondary barrier against wind driven rain penetration entering the wall framing.
The vapour permeable sarking has two main functions, weathertightness and thermal resistance.
Panel fixings must be no closer than 50mm but no further than 112mm to the horizontal panel edge and no closer than 50mm to the vertical edge, while normal fixing centres are at 225mm maximum centres. All materials that are susceptible to deterioration due to plasticiser migration must be protected (check with product manufacturer).
A common method is to inject with expandable polyurethane foam and seal with a long lasting exterior gap sealant to make a weather tight seal. They should have their own stand-alone supports or be tied to the supporting wall frame (eg.
Make sure it is plumb, scraping of excess glue protruding through bead perforations (priming of beads in this case is not required).
NRG Greenboard™ should to be protected from exposure to direct sunlight and kept away from extreme heat and organic solvents.
NRG Building Systems cannot be held liable for inferior flashing and installation practices. Further, as the successful performance of the relevant system depends on numerous factors outside the control of NRG (e.g. NRG Building Systems will not be liable for omissions and or errors contained in this manual. Either through installation of off-cuts in the wall cavity or it can be granulated and mixed with virgin material to make new products. Hopefully, you can gather comprehensive information and guides about Eiffel Tower Wall Stickers Building and Best wall sticker design inspiration picture in modern house, which may give more benefits for your own property. Do you believe boycotting it can help a single Tibatan refugee or scrare of chinese government? I have extensive knowledge on the issue that has been gathered from academic papers, journal articles, historical references, eye witness accounts and interviews, and my own experiences.
Go out there and take a look for yourself before you accept what is fed to you by the media.
I am surprised so many leading architecture practices are willing to ignore the reality of the state of human rights in China to participate in the Olympic sham and have their work and name associated with it. For example contemporary panelling interior wood wall paneling designs that we think is proficiently mixing smart interior wood design plan, well designed design glance, items alternative, strong representation of outline decoration and design theme harmonization. After glance at the interior wood wall designs picturecollection slowly, hopefully you will found several fresh suggestion to be deployed on your own design.
Check your local requirements – and save money by using normal veneer ties in areas of low seismic risk. Understand that some form of horizontal reinforcement is required in all concrete masonry construction, including veneer applications. Anchor hardware needs to be engineered, and depends on the size of the panel as well as the stone type. In some cases you can reduce the number of anchors required by conducting anchor strength tests on stone samples identical to those being installed.
Search our glossary of essential terms for a primer on the essential components of well-built masonry walls. It is the intent to provide recommendations which go beyond the content of those standards, especially as it relates to integrating assemblies into a total building enclosure design.
Harvey, AIA, RWC, LEED AP of Applied Building Sciences, and Joshua Kelly of Simpson, Gumpertz and Heger.
The foundation wall system may include an earth retention system of soldier piles and wood lagging or shotcreted rock requiring consideration of waterproofing applied to the earth retention system. The geotextile fabrics retain sand, soil, concrete, or grout allowing water to migrate into the free draining core.
Geotextile fabrics are typically constructed using polypropylene, polyester, or nylon and are available in either woven or non-woven designs. Dampproofing is always applied on the positive side, or wet side, of the structural element. Negative-side waterproofing systems are post-applied to the surface of the element opposite the surface exposed to moisture, typically the interior of the foundation wall. For foundation wall applications, typical cold applied fluid applied systems are approximately 60 mils in thickness.
If heat-welded seaming is employed and loose-hung membranes are tough and protected from damage by protection board, they may be effective waterproofing materials, but if a leak occurs, the leak will be difficult to locate and correct due to the loose application of the waterproofing layer in those cases. The latter two should not be used as waterproofing except for the most non-critical conditions. When it is wrapped over masonry ledges, care must be taken to coordinate with masonry ties and thru-wall flashings. If installed, soil pressures can cause the "dimples" in the drainage core to displace or damage the waterproofing membrane.


Waterstops are manufactured products available in a wide range of configurations and sizes. Based on some extensive excavation and waterproofing experience, it has been found that corrugated PVC drain tile piping can collapse under the weight of backfill, and the preference is to use stiffer PVC pipe if possible. For surface moisture loadings such as rain and snow, the first line of control is the upper screen at the exterior surface. Backfilling with native, poor draining soil is not recommended as this will maintain an active water load on the foundation wall and limit its ability to control moisture ingress to the interior. In these cases the remaining part of the system is a dampproofing applied directly to the exterior surface of the foundation wall.
However, since some municipalities charge for water pumping into storm drain systems, these costs must be weighed over the life of the structure when designing the waterproofing systems.
This finish is dependent on the interior use whether it be a controlled office environment or a non-controlled parking environment. In many cases the exterior facade element, whether it be brick, stone, etc., is carried down to just below grade level to properly transition and protect this sensitive area.
Distribution systems within the foundation walls themselves must be treated with careful consideration, as they can also be conduits transporting air and moisture within the structure. Proper design to connect downspouts into perimeter drain systems directly instead of flowing onto the area directly adjacent to the foundation wall is prudent in design.
Sheet products are advantageous in terms of consistency in product material properties and thickness, but the primary drawback is the numerous laps that are required. One potential disadvantage is the inability of some liquid products to span cracks or opening of construction joints, which may occur on new buildings soon after application. Methods for concrete placement include cast-in-place between the lagging and interior forms, or spray applied shotcrete.
Prefabricated synthetic drainage layers are sometimes used in lieu of protection board for protecting waterproofing membranes. The slip plane can reduce stresses imposed on the membrane during controlled backfill operations; these stresses can cause membrane damage, wrinkling, loss of adhesion, or delamination. There is a combination of environmental design loadings at this interface such as surface water, runoff, and cavity wall drainage.
Limiting the direct contact of moisture with the isolation or flashing detail at the envelope seal is a very effective practice. Sewer pipe penetrations, water line entry penetrations, drain basins in the floor slab or sleeves for electrical, gas or communication are all common penetrations, typically with their own design or detailed features. Sealing these generally requires application of elastomeric boots that seal to the housing and to the exterior pipe.
For treatment of leaks providing amplified external drainage media similar to that required on the exterior wall is highly effective. A liquid membrane cant covered with an elastomeric flashing extending to the edge of the footer and several inches above the cant has proven historically effective. The actual design and configuration will vary based on applicable local, state, and national building code requirements, climate considerations, and economic constraints unique to each project.
The cavity also allows the wall to ventilate and drain which is essential for a healthy wall.
In its weathertightness role it protects the building framing from direct contact with moisture generated by wind driven rain penetration, while allowing the condensation of moisture from interior artificial heating and cooling to escape. It is essential that the vertical and horizontal butt joints be bonded with polyurethane foam adhesive. It is also a recommendation that where ply bracing is fixed externally, counter battens be fixed perpendicular to adjoining studs to level the wall surface prior to fixing Greenboard™.
It is important to allow for adequate back-blocking for these items prior to the installation of the NRG Greenboard™.
The Greenpix Zero Energy Media Wall is the world’s largest color LED display, and has a self sustaining energy life-cycle.
Future content for the media wall is expected to include Olympic events, site-specific video-art installations, weather forecasts and video gaming.
If you are sure of all western people who respect human right are not economic driven at all, probably you will see the result of an isolated China eventurally.
But if you don't like, we have wood wall decor or wood panel for wall marshal erb which provide unique atmosphere to environment nearest and created with sophisticated design. It is intended to provide a "Best Practice" and shall not be construed in any manner to establish the legal standard of care required from licensed professionals.
For most portions of the foundation wall, water removal and control is of prime importance.
The fabrics are available in various forms including non-woven for clay type soils and woven or small opening geotextiles for sandy or high-silt type soils. Although marketed to be used with excavated soils during backfill in lieu of a granular drainage layer, it is recommended that a full system approach be used in applications where water leakage is not tolerable; a full system approach should include both a synthetic drainage layer and granular drainage layer. Woven products are constructed using individual threads or filaments and have good strength and stiffness; however, the material can be penetrated by angular aggregate reducing the ability to properly filter or separate fine elements. Blind-side waterproofing systems are pre-applied to the area where the concrete element will be placed that is directly exposed to moisture. It is always better to have a continuously bonded and adhered waterproofing layer to reduce the potential for lateral moisture migration beneath the membrane. Bentonite is, therefore, most effective when properly confined so the product can swell to fill voids and so that it cannot be washed away. Where grade slopes down along an exterior wall, the waterproofing will step down incrementally so that it continues to protect the below grade, occupied space. Additionally, the composite cores have sharp corners that can cut the waterproofing membrane during installation or backfill operations. Common materials include polyvinyl chloride (PVC), neoprene, expanding sodium bentonite and thermoplastic rubber. Typical hydrostatic and soil pressures generally range from 30 to 62.4 psf per foot of depth.
This upper screen may consist of relatively permeable landscape areas ranging to impermeable pavers, concrete or asphalt surfaces that will shed the majority of surface moisture. As moisture moves from the upper screen through the drainage system on the exterior towards the exit drain, moisture will inevitably make its way toward the surface of the foundation wall itself. Building codes also generally require waterproofing if the ground-water level cannot be maintained at least 6 in.
Portions of the building permanently below the water table may require more redundant systems. However, the use and location of the insulation is more important on the control of moisture in terms of preventing condensation on interior wall faces for the entire height of the foundation wall.
Laps should be installed so that the upper sheet is lapped over the lower sheet so that water is shed naturally across the lap.
With bentonite systems, lapping of bentonite sheets is typically backlapped from the exterior if concrete placement involves pouring from the top of the wall. Caution is advised with use over softer liquid applied materials as the drainage layer may dig into and breach the membrane.
Extruded polystyrene insulation boards should be properly supported on the footing to prevent vertical movement. These features, however, leave much to be desired with respect to sealing and waterproofing. Other surfaces such as gas pipes, signal or electrical should generally be done with due consideration for the nature of the sleeve through the exterior wall and the depth below grade of the penetration. Special emphasis is placed on evacuating the water at the wall base to avoid water build-up in the back fill or drainage system. Where the foundation wall is required to be waterproofed, adding a waterstop to the construction joint is recommended. Full compliance with manufacturers' recommendations and recognized industry standards is recommended, and should be reflected in the appropriate sections of the project specifications. Thermally the vapour permeable sarking divides the wall into two separate air spaces, which significantly increases the thermal performance of the wall.
Also ensure polyurethane foam adhesive is applied to all batten faces prior to the panel being pushed against them for maximum bonding to the support frame. This is not just a gap filling exercise but an integral part of the total NRG Greenboard Walling System.
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Harvesting sunlight collected during the day via photovoltaic solar cells, the wall uses stored solar energy to light up the LED’s for a spectacular nighttime show. I wonder then if you have ever been to Tibet, if you can count any Tibetans as good friends, or where in fact your information is sourced from? However, water removal measures around foundation walls below the water table may be impractical and expensive over the long-term and the waterproofing strategy becomes critical. Many drainage mats also include a polyethylene sheet backer to uniformly disperse the loads imposed on the membrane and reduce the potential for damage caused by non-uniform profiles (dimples) in the composite core.
Non-woven products are typically continuously extruded and spun and then needle-punched to create uniform openings that can be selected depending on the design.
Understanding the specific chemical admixture is important in determining its potential performance in below-grade dampproofing or waterproofing applications.
Even these systems should only be considered for use as a secondary (back-up) waterproofing to a positive-side waterproofing system, unless they are used with special details provided by a waterproofing expert which are beyond the scope of what are usually provided by system manufacturers. Therefore, a protection layer is recommended between the waterproofing membrane and the drainage layer. Surcharge loadings may include live loads from pedestrian walkways or from vehicular roadways.
The effectiveness of this initial screen in shedding moisture may influence the design of the other components of the system. Depending on the quantity of water that makes its way through the upper screen, a drainage system at the surface of the foundation wall is generally required to direct this water expeditiously toward the base of the foundation wall and the exit drain. For example, crystalline waterproofing is often used to provide redundancy to one of the other waterproofing systems. Condensation is possible in below grade conditions in warmer more humid summer conditions as below grade spaces tend to be cooler in the summer because of the insulating effect of the backfill soil. In many applications the interior finish is simply the interior surface of the material used for the foundation wall, i.e. Where sheet materials are utilized, it is preferred to adhere the membrane fully and continuously to the substrate to prevent lateral migration of leaks, and to heat-weld or positively bond the seam laps. Bentonite sheets are also typically shingle lapped with the lateral direction of the concrete placement. With these softer waterproofing membranes protection board is recommended under the synthetic drainage layer or drainage layers with integral polyethylene backing may also be appropriate. In addition, mechanical attachment of insulation or other materials that would penetrate or place stress on the membrane should be avoided. Penetrations can also become quite exotic such as steam penetrations or other features that require special treatment. Panels can be joined off stud, if glued to the abutting panel with polyurethane foam adhesive. Ensure surfaces are in good condition clean and free from oil, dust, loose materials including old sealant and release agents. Apply masking tape to surfaces where contact with sealant is not required.
Flood-Lights and sensors) require a mounting plate, to be fixed across at least two or more frame studs to give longterm fixing support. On the other hand, give chinese govenment more space and time to evolve (I think most people should admit that chinese government is much better in terms of respecting human right in the last 10 yrs compared as 30 or 40 yrs ago), I think you probably will see a satisfied result for all of us, chinese, tibatan and westerners.
Regardless, people who have not been to Tibet are entitiled to thei opinions, particularly as it is impossible to go there at present. In the upper areas of the foundation wall thermal loading considerations must be addressed. In general, when properly designed, non-woven products have good filtration and separation properties. Areas designed as pedestrian areas should also include consideration for emergency vehicular loadings.
Some municipalities also limit pumping of groundwater as this can lower groundwater levels and affect the support of adjacent structures. This cooling effect combined with general poor air circulation in underground spaces can result in condensation on interior wall surfaces. When using cast-in place concrete, detailing of the form ties is critical and using single sided forms braced back to the slab can minimize this detailing. If adhesives are used to attach an element to the membrane, the adhesive pattern should be installed in small dabs to allow vertical water discharge and reduce the potential for hydrostatic pressures imposed on the waterproofing membrane. Because of the unique nature of penetrations and Special Features, no single rule or criteria can govern or apply to the effective treatment thereof.
The backing plate must be of a material that will offer, long-term weatherproof durability.
Do not assume that because I comment on Tibet that I am ignorant or rely solely on the Media, which I agree is not always factual or accurate. Blind-side systems are typically either a waterproofing sheet or an impermeable clay-based material.
In areas with greater moisture loads from hydrostatic pressure from high water tables or sensitive interior environments, a waterproofing membrane should be applied to the exterior surface of the foundation wall in lieu of dampproofing. Detailing around shoring piles and soil tie-back anchors can be challenging and reducing the number or frequency of these types of penetrations will increase the potential for good performance of the waterproofing system. However, classification of common penetration types and features helps to ensure effective treatment and proper function.
Panels must span across a minimum of two channels or battens and must be installed in a horizontal stretcher bond pattern.
If the internal lining is already installed, the mounting plate can be installed externally prior to the installation of the QT EcoSeries Wall Panel. Waterproofing membranes are predominantly applied to the positive (exterior) face of the foundation wall, however, there are negative-side waterproofing systems that can be applied to the interior of the foundation wall, and blind-side waterproofing systems that can be pre-applied to a support-of-excavation wall resulting in a waterproofing system installed on the positive side.
Diligent inspection and repair of the waterproofing after reinforcing steel is placed is a critical step, as steel placement often results in damage to the waterproofing that can not be repaired once concrete is placed. To prevent corrosion from salt aerosols in high corrosion zones, (such as geothermal activity or within a 500m distance from the sea) upgrade fixing screws to class 4 or stainless steel (AS3566). In these cases, the concrete foundation wall is placed against the blind side waterproofing membrane. Shotcreting can result in undesirable conditions such as voids behind reinforcing steel, and as a result some waterproofing manufacturers do not recommend their products for this application. In combination with bentonite sheet waterproofing, these voids can be detrimental, since the bentonite can swell into the voids and loose its waterproofing integrity. Careful attention to installation is critical during both cast-in-place and shotcrete applications in blind-side waterproofing assemblies.



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