All uploads and downloads are deemed secure and files are permanently deleted from the smallpdf servers within an hour. The contractor should be kept informed of subgrade test status in order to modify the operations if necessary. The proper drainage composite can protect the waterproofing membrane from accidental punctures that may occur, especially when backfilling. Before you combine the files into one pdf file, use merge pdf to draganddrop pages to reorder or to delete them as you like. Two critical components of virtually all waterproofing systems are the abilities to protect the waterproofing membrane and channel water away from the structure. Basic uses paraseal is designed for use on backfilled walls. Pavement thickness design starts with a realistic value for the load support capacity of the subgrade. Pdf this paper focuses on waterproofing failures in concrete buildings and structures. The general conditions, special conditions, applicable portions of division 1, and requirements for general contractors and subtrades form part of this specification. Below grade waterproofing is the core discipline of any waterproofing specialist. The owners of the sharjah mall required a rapid application set and forget solution for their below ground waterproofing needs including the below slab and pile head waterproofing and below. Waterproofing 3 design principles specialist input the specification of waterproofing systems is a specialised task. The pavement then is made thick enough so that load pressures transmitted to the subgrade are reduced to a level consistent with subgrade support capacity. What is foundation waterproofing versus dampproofing.
That demands membranes of exceptional durability, elasticity through freeze and thaw, and resistance to naturally. General the department standard specifications, section 106. Roll out miradrain, fabric side down, onto a properly prepared subgrade. The subgrade constitutes the foundation material for the pavement structure as highway pavements ultimately rest on the native soil subgrade.
What links here related changes upload file special pages permanent link page. The purpose of this document is to discuss waterproofing options for the construction of underground structures, and to provide guidance to the designer for the selection of the proper waterproofing system for the particular type of structure to be built. Acryliccement dampfast 2part waterproofing and sealing membrane that eliminates th quick drying. Swepco waterproofing systems can be used in both vertical and horizontal applications such as foundation and basement walls, tunnels, utility conduits, shafts, floor slabs, bathrooms, kitchens, laboratories and. A number of excellent belowgrade, exte rior foundation waterproofing systems have become available within the last 20 years for preventing water penetration.
Com scsts facilities consulting team provides thirdparty observation and documentation to deliver detailed written and photographic records of installation and replacement of materials used during the construction process. Figure 1 protected claddings such as membrane components. Hence the performance of the pavement is affected by the characteristics of the subgrade. How to combine pdf files into one document lifewire. A blindside waterproofing membrane for foundations and other critical below grade applications.
Description the heart of the barrett ramtough 250 vma vertical membrane assembly is a fluidapplied rubberized asphalt membrane composed of sbs rubber polymers, specially refined unoxidized asphalt, recycled tire rubber and mineral filler. To withstand hydrostatic pressure, a waterproofing system must be a complete integrated system to start and remain seamless over decades. Subgrade water proofing concrete building technology. The above guarantees are applicable only to waterproofing systems installed on the subgrade walls and floors of buildings and are not applicable for other waterproofing applications such as swimming pools, water tanks, planter boxes and bathrooms. Waterproofing details, constrained conditions, expansion joints. Owing to its many advantages and distinct benefits, the. Aci the modulus of subgrade reaction is an often misunderstood and misused concept for the thickness design of. Guidelines for waterproofing of underground structures. It is recommended that, once the design team has given the system some thought, an appropriate specialist should be contacted immediately for early advice and help on the waterproofing design. In a fill section, the subgrade is the top of the embankment or the fill. Grade bottom of trench excavations to required slope, and compact to firm, solid bed for drainage system. Waterproofing is designed to exclude water even when the water is under a hydrostatic head.
The contractor shall provide all supervision, labor, equipment, materials and implements necessary to perform all of the work included in this specification. The surface has to be smooth, without sharp stones. The treated soils may be inplace subgrade or borrow materials. The development of a sevenstory office building with a four story underground parking. Blindside waterproofing is considerably more complex than traditional belowgrade waterproofing because the process is reversed and waterproofing is installed before the concrete shotcrete is installed. In 1943 a danish chemist, lauritz jensen, patented a revolutionary capillary active concrete. We are dedicated to the development of highperformance products, the continued pursuit of advancement in construction technologies, simplifying the complexities of construction worldwide and delivering value to our customers. Spray polyurethane foam for exterior subgrade thermal and. This implies that the pressures calculated by this equation will lead to underdesign in soft subgrade conditions and will be too conservative in strong subgrade conditions. This coldapplied, 100% solids, singlecomponent waterproofing compound is ideal for positiveside waterproofing for foundations and also in betweenslab applications. Below grade waterproofing is to prevent water under. These grades and types are intended to make a clear distinction between the types of basement waterproofing systems available and the sort of results that can be expected when each is applied. Dampproofing is intended to keep out soil moisture while waterproofing keeps out both moisture and liquid water.
Concrete division lehigh cement pozzolanic lehigh northwest materials. That demands membranes of exceptional durability, elasticity through freeze and thaw, and resistance to naturally occurring and deposited chemicals and soil acidity. William joe macicak is a forensic structural engineer with. Basement waterproofing of new structures excerpts from dr. Waterproofing details design under constrained conditions. Buildings have been dampproofed for years, a practice that used to be mistakenly referred to as. Conditions and requirements varies according to specific project circumstances which are.
You can read the property care associations best practice for type c waterproofing by clicking the button below. Meadows keeps water where it belongs whether its applied inside, outside, horizontally, or vertically. Failing waterproofing systems present enormous challenges to rectify and in many below ground applications you only get one chance at doing it properly. Waterproofing specification and project requirements carlyle house bank bilding 1 n fairfax st. Fosroc waterproofing fosrocs vast experience in providing constructive solutions to many famous building structures around the world has been built on a broad portfolio of products. The design of transport infrastructure within the highspeed rail does not always reflect environmental and economic aspects. Concrete waterproofing and chemical protection with crystalline technology basc civil eng, u of waterloo, 1984 member of apegbc 25 years experience in concrete and concrete construction hilti canada ocean construction supplies ltd. Section 2 earthworks standard specification for urban infrastructure works 25 edition 1, revision 0 september 2002 formation, ensure that the stream is a broad sheet flow which crosses roughly at right angles to the alignment and minimises the likelihood of subgrade softening. Waterproofing must form a water resistant protective membrane over the spf. Design and construction standards cornell university 07. Technical report statement of responsibility this form must be typewritten tr1 august 2016 house nos street name work on floors 1 location information required for all applications. To be stable, the finished subgrade at the time of placing pavement layers must.
We are inspired to influence how the world is built. Page 1 of 11 modulus of subgrade reaction which one should be used. Ideal for waterproofing shower recesses, laundr roofs, water tanks, cement toppings, planter boxes, etc. There is a distinct difference between dampproofing and waterproofing. Before starting the installation of the waterproofing system, the subgrade has to be carefully prepared. Kevin yuers, understanding the pros and cons of crystalline waterproofing. The instruments are positioned on a concrete table cast directly on the subgrade rock. Glasgrid cg compogrid is a composite material consisting of our conventional glasgrid bonded to a nonwoven paving geotextile that provides the added benefit of waterproofing and the ability to be installed on milled surfaces. Design and construction standards cornell university.
External basement waterproofing, also known as positive side waterproofing. This includes not only building upward, but also downward. In situations where it is not practicable to apply waterproofing to the outside of the construction e. Include horizontal distance of at least 6 inches between drainage pipe and trench walls.
A case study for waterproofing belowgrade walls shored with. Waterproofing of tunnels under infiltrating water umbrella. Sikalastic 320 is a single component, liquid applied, bitumen modified, coal tar free, moisture cured polyurethane waterproofing membrane available in selfleveling sl, sprayable sg and nonsag ns consistencies. Read the pca best practice note for type c waterproofing. Kentrack a railway trackbed structural design program.
Special attention shall be paid at the design step in determining the thickness and the type of bitumat bituseal membrane to be installed. State let to be used only with the approval of the district bureau of project implementation. Subgrade waterproofing considerations for specifiers, construction specifications institute, chicago chapter roundtable, chicago, il, march 4, 2016 retrofit subgrade waterproofing options and pitfalls, international concrete repair institute, fall convention, fort worth, tx, w. Waterproofed plazas over occupied underground facilities and roof terraces became popular ways of maximizing both horizontal and vertical space.
Voc compliant and can be applied to damp or green concrete. For waterproofing latest advanced technologies are being used worldwide. Usage of emulsion mixes to mitigate the effect of subgrade movements jeanmartin croteau, p. Environmental product declarations sika waterproofing. A comprehensive waterproofing system with foundation drainage is required on all. Waterproofing foundations tunnels planters retaining walls elevator pits. Water managed foundation systems are different from waterproofing. Waterproofing is one of the most important parameters considered in the construction of building and structures to. Belowgrade blindside waterproofing membrane systems. The subgrade or roadbed soil supports the pavement structure and it is composed of inplace material in. Subgrade stabilization usually involves inplace road mixing, and generally requires adding 3 to 6 percent lime by weight of the dry soil. However, the typical track subgrade support is resilient in practice, which has a significant effect on the stress distribution in the trackbed. Waterproofing membrane systems are available as either postapplied or.
Waterproofing in buildings methods and types of waterproofing. But swepco waterproofing systems come with a written guarantee, a guarantee which protects the building owner against leakage attributable to failure of the products used in the system. Swepco waterproofing systems include solutions for both dampproofing and waterproofing exteriors of subgrade walls and floors. Lime treated soil construction manual lime stabilization.
Drainage materials for below grade enclosures include. Applications can go many levels belowgrade and can reach into the water table. Pdf assessment of waterproofing failures in concrete buildings. These include waterproof membranes, waterstops, joint sealants, concrete repair mortars, resin. Subgrade water proofing free download as powerpoint presentation. Rodney lock, stephane hoffman, amanda prot, best3 conference atlanta, georgia. Your download will begin once the zip file has been created. Rearrange individual pages or entire files in the desired order. New construction or repairs shall provide a robust and redundant subgrade waterproofing and drainage system that will provide decades of performance and a dry building interior space. The purpose of this study was to define alternative. Pdf successful waterproofing of concrete foundations prevents the. The general conditions, special conditions, applicable portions of division 1. We use cookies, which are small files we place on your browser. Recent development of highquality membranes and spray.
Manual for frequency of sampling and testing and basis for use of materials general the department standard specifications, section 106. The membrane cannot be exposed to ultraviolet light. A system approach in order to understand the applications of waterproofing it is necessary to have knowledge of the principles of waterproofing below ground structures. Floodplain information sheet 4 floodplain management series.
Waterproofing is the process of making an object or structure waterproof or waterresistant so. Pdf waterproofing of concrete foundations researchgate. The tunnel designer must consider the acceptable level of water ingress which should effectively be zero. In 1946, he founded his first company in denmark and called it vandex water out. When applied it forms a completely monolithic and flexible rubbery. Each subgrade waterproofing membrane system and application method has advantages and disadvantages that need to be considered and carefully evaluated prior to specifying a system for a particular use.
Each subgrade waterproofing membrane system and application method has advantages and disadvantages that need to be considered and carefully evaluated. These guarantees are one more reason to feel confident in specifying swepco waterproofing systems for all your subgrade mois. Subgrade is that portion of the earth roadbed which after having been constructed to reasonably close conformance with the lines, grades, and crosssections indicated on the plans, receives the base or surface material. Swepco waterproofing systems can be used in both vertical and horizontal applications such as foundation and basement walls, tunnels, utility conduits, shafts, floor slabs, bathrooms, kitchens, laboratories and multi. Traditional techniques tunnel waterproofing has traditionally been based on sheet materials that are welded together on site to form a membrane. A case study for waterproofing belowgrade walls shored. It is required where the exte rior faces of foundation walls will be inac cessible. Waterproofing details design under constrained conditions samuel vesely, b. Fixit healthy construction booklet construct your ideas, 2012, pp 912 1. Fluidapplied concrete waterproofing liquid waterproofing. Cementitious davco k11 a brush or spray applied, cement based system for waterproo masonry through the crystallisation process. The waterproofing system for a tunnel should be an integral part of the design from the outset. When applied it forms a completely monolithic and flexible. Type c waterproofing systems are ideal for achieveing grade 3 levels of waterproofing.
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