... is a challenge to the designer for roofs with over ... with to follow in the design of roof flashings. It has the roofing membrane, resistant to sagging and ...
DTIC Science & Technology
... applying wash- dcwn water to roofing surfaces which ... focused on washdown for building roofs it was ... Therefore the roof washdown system must be ...
Placement of crushed aggregate by pneumatic methods to provide ground support in abandoned mines was simulated using specially designed discharge assemblies under controlled conditions. These tests were performed to determine the material throw distance, material trajectory, degree of mine roof contact achieved, and in-place density of the stowed material. ...
Energy Citations Database
... saved 43 roofing ... Roof wasabown therefore, is of value only in reducing building ... cost by eliminating the need for high mass concrete roofs. ...
This book is based on a symposium on roofs and roofing sponsored by the Road and Materials Group of the Society of the Chemical Industry. Presents recent advances in the science and technology of roofing. Contributors discuss performance and durability of new roofing materials, results of basic research on ...
...safe access/egress involving floating roofs. 195.405 Section 195.405 ...safe access/egress involving floating roofs. (a) After October 2, 2000...associated with access/egress onto floating roofs of in-service aboveground...
Code of Federal Regulations, 2010
The document discusses the design of roofs from the standpoint of thermal performance, including temperature control and seasonal variations.
National Technical Information Service (NTIS)
The objective of this investigation was to design a mechanical roof-breaking device suitable for breaking massive roof and for use with the general range of roof support equipment in longwall operations. Given the state-of-the-art in rock mechanics of the...
... Included are data concerning insulating properties, moisture ... set-up and operation of these roof types is ... designs of large-panel roofs for persistently ...
The objective of this research was to develop a procedure for designing roof beams for a new generation of rapidly erected protective shelters. The cost of these roof elements should be minimized consistent with the performance constraints, and made of li...
... basic mechanism of transporting particles in small-scale experiments, full-size roof planes were constructed. Typical roofing surfaces were installed ...
The ornamental design for a solar collector cell container and roof flishing assembly, is shown and described.
Like a good roof, the moonsuit is lightweight, durable, and repels water. Roofs look stiff, but they are designed to be flexible so they can expand with ...
NASA Website
Roof support, an important aspect of ground control, involves maintaining roof competency to ensure a safe and efficient mining environment. Wide variability in rock quality and stress distributions requires a systematic approach to roof support design that satisfies specific goals. The success of past ...
This second edition of the DOE PSA Flat Roofs Technical Guide consolidates in one volume as parts 1, 2 and 3 the design, construction - site control and construction - maintenance as regards flat roofs. Design--For designers--covering outline design, fina...
Conceptual design packages for proposed optimized operator compartment designs applicable to roof drills are organized, bound, and arranged alphanumerically by manufacturer's make and model designation.
in the Guideline for the Planning, Execution and Upkeep of Green-Roof Sites. These standards designate specific as "living roofs," are roofs that are covered with vegetation and a plant growth medium. Green roofs offer to support large plants such as shrubs and trees. Extensive green ...
E-print Network
The design of a successful roof terrace depends upon the designer's ability to select the most compatible compromises. There are many acceptable materials and many ways of combining them; all have their particular advantages, but allowances for their disa...
Construction plans, details and bill of materials for a 6 person family shelter are presented. Radiation shielding with PF 100 is provided by masonry walls 1 ft to 8-in.-thick and a roof composed of 17 to 20 inches of gravel fill sandwiched between two co...
Roof bolting is the most popular method for underground openings in the mining industry, especially in the bedded deposits such as coal, potash, salt etc. In fact, all U.S. underground coal mine entries are roof-bolted as required by law. However, roof falls still occur frequently in the roof bolted entries. The ...
DOE Information Bridge
Most problems with roofs can be eliminated, or at least minimized, by compliance with the following principles for roof design: (1) Consider all requirements, both individually and collectively, and do not sacrifice one requirement for another without rec...
This report describes the approach, procedures, and results of a program to develop training materials for roof bolter operators. The objective of the program was to design and produce a training sequence which would prepare roof bolter trainees for job p...
Traditional roof truss construction accounts for approximately sixty per cent of the market for house roof trusses and thus forms the largest single market for S A Pine structural timber. There is some concern that traditional trusses designed according t...
A description is given of a new design of lemniscate-guided powered roof support developed at the Central Mining Institute, Katowice. Conventional supports of this type present a serious reaction with the roof because of the horizontal displacement of the canopy in the course of decreasing support height as the support takes weight. ...
Roof bolting is the most popular method for underground openings in the mining industry, especially in the bedded deposits such as coal. In fact, all U.S. underground coal mine entries are roof-bolted as required by law. However, roof falls still occur frequently in the roof bolted entries. The two possible reasons ...
The emphasis of this report will be on the methods available to design and analyze aboveground arches for blast loads and also on the final design results and comparisons for each case examined. It is not intended to be an in-depth study on structural dyn...
... VELOCITY, WATER WAVES, DECONTAMINATION, WATER, TEST METHODS ... Categories : HYGIENE AND SANITATION RADIATION POLLUTION ...
The many changes that have occurred in roof support design are discussed and hydraulic and electro-hydraulic shields for thick, medium and thin seams are reviewed.
... of a Model Roof Slab to Fragment Impact Loading. ... design procedure that will account for these loads. ... Fragments having a mass of 4.41 grams were ...
... so as not to expose roof structures. ... transformers shall not be installed on combustible roofs. f) Oil�insulated transformers installed indoors shall be ...
... Where insulated metal deck assemblies are used, such ... For applications involving sloped roofs, draft curtains should run parallel with the roof slope. ...
establishing non-corrosive performance of the admixture. 03520 LIGHTWEIGHT CONCRETE ROOF INSULATION A. Design of tapered lightweight concrete roof insulation, including all ridges, hips and valleys. The drawings shall
... FALLOUT REMOVAL STUDIES ON TYPICAL ROOFING SURFACES FOR THREE SIZE RANGES OF PARTICLES (44 TO 88 MICRONS, 88 TO 177 ...
... 20 2.9 Finishing concrete in stairwell roof ... .. 20 ... 39 4.2 Damage to stairwell roof immediately above landing .... 40 ...
... We could not determine if the walls were insulated to the standards required by the design. ... Roof truss system supporting the motor pool roof ...
After describing the geology of the area of this US mine, the author lists the work which will be done in Republic Steel's roof fall avoidance programme. The aim is to obtain and interpret geotechnical data, analyse existing roof control methods and develop alternative ones, evaluate ground control instrumentation and implement ...
This paper reports that both API 650 and BS 2654 contain criteria for design of single deck pontoon-type tank floating roofs. The codes states that the floating roof shall have sufficient buoyancy to remain afloat under the following conditions: tank content specific gravity is 0.7; the roof center deck is ...
This report provides a single-source document useful to architects, engineers, builders, and homeowners that addresses numerous aspects of roof pond design, construction, and performance. An introduction to the roof pond passive solar space heating and co...
Lateral displacement in the immediate roof beam at the Waste Isolation Pilot Plant (WIPP) is a significant factor in assessment of excavation performance for the design of ground control systems. Information on roof beam lateral displacement, expansion, f...
In the design of the reactor room for a fusion reactor, the cost of the room strongly depends on the thickness of the roof because the area of the roof is generally large. The roof thickness is mostly determined by the requirement to reduce the skyshine d...
Shale roof deterioration in coal mines, caused by ventilation air humidity fluctuations, is a common ground control problem. Shale roof deterioration often results in increased accidents, decreased production, inadequate ventilation, and increasing operat...
Despite more than half a century of experience with roof bolting, no design method has received wide acceptance. To begin to improve this situation, National Institute for Occupational Safety and Health (NIOSH) conducted a statistical study of roof bolt p...
Two studies were conducted with the objective of quantifying the carbon storage potential of extensive green roofs. The first was performed on eight roofs in Michigan and four roofs in Maryland, ranging from 1 to 6 years in age. All 12 green roofs were composed primarily of Sedum species, and substrate depths ...
PubMed
The objectives of this research were to determine the stability relationships of coal mine roof rocks that are cut by fractures of intersecting joints, with and without roof bolts, under various sets of conditions and to develop criteria for the design of roof bolt systems for such roofs. The ...
... No violations are expected of federal and State ... noise, the EPA guidelines recommend an ... of an aboveground mounded EDA design (PBQD 2003). ...
Texas is investigating the idea of building a long term waste storage facility, also known as an Assured Isolation Facility. This is an above-ground, retrievable low-level radioactive waste storage facility. A preliminary, scoping-level analysis has been extended to consider more complex scenarios of radiation streaming and skyshine by using MCNP to model the facility in ...
The petroleum industry has been using storage tanks for over 65 years, and now there are more than 700,000 aboveground storage tanks in the United States. Storage tank operators are confronted with corrosion problems that develop when they attempt to comply with laws pertaining to secondary containment and aboveground storage tank. Tank ...
... abilities. SEDAR has been developed for the flat and low-slope roofing domain, a subfield of the building design domain. ...
The feasibility and applicability of a washdown or water curtain system against radioactive fallout for building roofs were evaluated, based on the results of a water requirements experiment plus presently available information. The system was found to be both feasible and applicable. The initial coverage and minimum flow rates for 95 and 99% surface coverage were ...
A factorial experiment designed to assess the response of Muhlenbergia prairie to different frequencies and seasons of burn has been in progress for six years. Analysis of above-ground biomass data from this study indicates that this vegetation type recov...
Guidelines were prepared for the installation of solar collectors and related equipment on low-sloped roofs of commercial and industrial type buildings. The guidelines are concerned primarily with the waterproofing integrity of the roofing system, access to the collectors and roofing, attachment of different types of collector support ...
Designed for use in roofing apprenticeship classes, this workbook contains eight units on skills used in built-up roofing, a listing of instructional materials, a glossary, and the text of Labor Code Article 30, Construction Safety Orders, "Roofing Operations and Equipment." Each instructional unit includes a ...
ERIC Educational Resources Information Center
Amid climbing energy costs and tightening budgets, administrators at school districts, colleges and universities are looking for all avenues of potential savings while promoting sustainable communities. Cool metal roofing can save schools money and promote sustainable design at the same time. Cool metal roofing keeps the sun's heat ...
Liquid water in low sloped roofs almost always causes problems. Roofs are designed only to control the migration of vapor, if at all. Small amounts of water leakage/penetration, may cause mold growth or catastrophic corrosion in current roofs systems. In a recent paper by the authors the effect of exterior surface ...
The Automated Extraction System (AES) is an advanced fullface continuous mining system designed and built by National Mine Service Co. Since initial testing in a coal mine revealed operational problems, a design review was conducted. Two potential conceptual problems were identified: the roof control concept and the hydraulic sumping ...
The research described in this report was designed to determine the general feasibility and specific requirements for burning asphalt roofing waste and recovering the energy resource as steam. The study combined technical market research with test burning in a three-task program to identify how to use burning as a means for reocvering the 7 x 10/sup 13/ ...
A roof bolt bender/inserter was designed and built to install roof bolts in low coal mines where the bolts used are longer than the seam height. The bender/inserter was installed on a Fletcher LTDO roof drill and evaluated in Clinchfield Mine Moss No. 2, ...
Geologic features including concretions, clay veins, faults, fossils, channel sandstones, and rolls (all defined in the appendix) can signal hazardous roof conditions in underground coal mines. This guide is designed to be used by mine personnel as a quick reference to aid in recognizing these geologic hazards. If a geologic hazard is recognized in time ...
...2011-01-01 2011-01-01 false Roof coatings. 2902.11 Section 2902.11 Agriculture...PROCUREMENT Designated Items § 2902.11 Roof coatings. (a) Definition. Coatings formulated for use in commercial roof...
Code of Federal Regulations, 2011
...2009-01-01 2009-01-01 false Roof coatings. 2902.11 Section 2902...PROCUREMENT Designated Items § 2902.11 Roof coatings. (a) Definition. Coatings formulated for use in commercial roof deck systems to provide a...
This paper addresses the general concept of sustainability and relates it to the building owner`s selection of a low-slope roof. It offers a list of performance features of sustainable roofs. Experiences and data relevant to these features for four unique roofs are then presented which include: self-drying systems, low total equivalent ...
It is generally recognized that as much as 60% of the air conditioning load in a building is generated by solar heat from the roof. This paper on SOLAR ROOF COOLING BY EVAPORATION is presented in slide form, tracing the history of 'nature's way of cooling' from its inception to the present. Included in the presentation are the current engineering ...
Roofs always have been a major focus for building energy-conservation measures. The emphasis traditionally has been on beefing up insulation. More recently, advances in roofing materials technology and analytical techniques have found new ways to fine-tune the energy performance of roofing to reduce not only operating costs, but also ...
The National Park Service offers this website on the exterior skin of a house, which is defined as a "weather envelope" that "typically includes all the surfaces of its functional and decorative features --roof, chimney, exterior walls, woodwork, windows, porches, doors, and the above-ground portion of the foundation." The site provides some basic pointers ...
NSDL National Science Digital Library
The US Department of Energy is placing a major new Roof Research Center at the Oak Ridge National Laboratory. This Center is currently under design with completion scheduled for late 1987. The center will be designated as a National User Facility. This en...
