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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001151
EISBN: 978-1-62708-219-8
... Abstract A portion of the roof of a single story building collapsed during a thunder storm. A failure analysis was conducted to determine whether this structural failure was due to improper design, substandard construction materials, faulty erection, or extreme weather conditions. The failure...
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Published: 01 June 2019
Fig. 1 Aerial view of building showing one section of roof collapsed. More
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Published: 01 June 2019
Fig. 2 View of roof collapse from inside the building. More
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Published: 01 June 2019
Fig. 3 Fractured truss in roof section adjacent to one that collapsed. More
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Published: 01 June 2019
Fig. 2 Damage to lantern light in roof. More
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Published: 01 December 1993
Fig. 1 Fireside of tubes removed from the roof area of the boiler 1 showing numerous circumferential cracks and fissures. This damage was typical in both boilers. More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001113
EISBN: 978-1-62708-214-3
... Abstract Six cracked A36 steel gusset plates that formed part of the roof trusses of a large manufacturing facility were discovered during a routine final inspection of a new building construction. Two different-size plates from different locations in the building were removed and tested...
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Published: 01 December 1993
Fig. 2 Damage in the front portion of the aircraft. (a) Hole in the external skin on the toilet roof. (b) Caving in of the toilet bowl. Damage in the front portion of the aircraft. (c) Damage to the instrument panel in the cockpit.(d) Hole in the backrest of the pilot's seat, front view. (e More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0046998
EISBN: 978-1-62708-232-7
... to the hearth. Preliminary examination in situ of the 14 tubes showed some pits on the outer surfaces of several tubes just below the roof of the furnace. Service History The furnace had been rebricked when new radiant tubes were installed. The tubes had been in service for only five months when...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001290
EISBN: 978-1-62708-215-0
... of the runway ( Fig. 1 ). The front toilet and cockpit areas had suffered extensive damage. The paint on the external skin above the front toilet had peeled off, and a hole was found on the skin of the toilet roof, with the metal lip curling outward ( Fig. 2a ). The panels of the toilet compartment had given...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001340
EISBN: 978-1-62708-215-0
... by membranes, and many of the failures occurred in the roof area within 0.61 m (2 feet) of the steam-drum inlets. Applications The package boilers were used in two similar plants to generate process steam where they operate at relatively constant load. Circumstances Leading to Failure One...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
... Maximum operating temperature 70 °C Minimum design metal temperature 0 °C Design pressure Atmospheric Design vacuum Atmospheric Corrosion allowances  Shell 0 mm  Bottom plates 0 mm  Roof plates 0 mm  Roof framing 0 mm  Wind design per API 650 162 km/h Materials...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001569
EISBN: 978-1-62708-229-7
... should be used. Improvements for control of water chemistry and acid cleanings were also effected. Superheater After 27 years a transverse failure of a superheater tube occurred just below the roof ( Figure 11 ). This tube was the last tube in the pendant and adjacent to a soot blower cavity...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001321
EISBN: 978-1-62708-215-0
..., the top tube of the first row failed. In both cases, the failure was by perforation adjacent to the welded fin on the crown (or roof) of the top tubes, located in an area near the upward bend of the tube. Applications The boilers have a maximum continuous rating of 163 Mg/h (180 ton/h...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001549
EISBN: 978-1-62708-224-2
... and the top ring of the tower had not been inspected for a very long time (it was not necessary to break this connection in dismantling the crane for transporting to another site). 2. Fatigue Failure of Crane Support Column This failure concerned a tower crane operating at the roof level...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001550
EISBN: 978-1-62708-228-0
...; i.e., in a roughly southeasterly direction, landing on the outside of the tank's enclosing dykes at the fractured ends and impacting on the dyke in the center. The tank roof had also moved in a similar direction, landing within the dykes, but partially on top of the shell. Thus, the region...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001725
EISBN: 978-1-62708-229-7
... itself. Parts were scattered over the powerhouse, some going through the roof. Even though fragments of the shattered machine were scattered over a wide area, fortunately only one slight personal injury occurred. Immediately, an engineering investigation was started to establish the cause of failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001473
EISBN: 978-1-62708-229-7
... As previously mentioned, the gearbox virtually disappeared from its foundation, with the result that the fractured parts were thrown all over the works, some being projected through the lantern-light in the roof as shown in Figure 2 , while the pinion buried itself in the wall of an adjacent water tube boiler...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006823
EISBN: 978-1-62708-329-4
... was an API 653/API 650 flat-bottomed cylindrical tank with a self-supporting conical roof that had been in operation for more than 25 years. It had an inside diameter of 8.87 m (29.1 ft), a nominal height of 12.2 m (40 ft), and a nominal design thickness of 4.76 mm (0.19 in.), with a CA of 1.59 mm (0.06...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... removed by grounding had previously existed because isolators on the roof fans were tuned to the same frequencies as the microscope. Flow excitation in the fans excited the fans' isolated natural frequencies that were transmitted through the structural steel and amplified by the microscope's isolators...