oq-gem

Glossary for gem taxonomy

Authors: Luke Allen, Andrew Charleson, Svetlana Brzev, and Charles Scawthorn

This online Glossary explains around 400 terms contained in the GEM Building Taxonomy v 2.0 and nearly 700 images.

The terms have been listed in alphabetical and numerical order. Text description of each term is accompanied by illustrations (photos and/or drawings) where possible.

We welcome contributions in the form of photographs or images, illustrating glossary terms. If you have any questions you can also contact us at buildingtaxonomy@globalquakemodel.org


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Category: terms
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This is a frame consisting of beams and columns, with strong and rigid beam-to-column connections. Includes frames with very slender walls, that do not resist a significant proportion of earthquake load. The frames can be single frames, or multiple bays repeated horizontally and/or vertically. These frames are not infilled with materials like masonry or concrete which would transform their behaviour to that of an infilled frame.

LFM_diagram_Charleson_1

A simplified drawing of a moment-resisting frame structure showing floor slabs supported by beams (adapted from: A. Charleson, Seismic Design for Architects, Architectural Press 2008, p. 64, Fig. 5.2).

LFM_Allen&Brzev_1

 

 

 

 

 

 

 

Partial section of a moment frame structure

LFM_India_Brzev_1LFM_India_Brzev_2

Reinforced concrete frame building under construction, India (S. Brzev)

LFM_Thailand_Lilavivat_1

Reinforced concrete frame under construction, Thailand (C. Lilavivat)

LFM_Canada_Brzev_1

Reinforced concrete buildings with a moment frame system have beams as a part of the floor system (Canada, S. Brzev)

Moment Frame 1.JPG

Moment frame, concrete, New Zealand (A. Charleson)

LFM_New Zealand_Bothara_1

A 1970s reinforced concrete frame, Wellington, New Zealand (J. Bothara)

LFM_Kyrgyzstan_Kanbolotov_1

Reinforced concrete frame building, Kyrgyzstan (K. Kanbolotov)

LFM_Kyrgyzstan_Begaliev_1

Reinforced concrete frame building under construction, Kyrgyzstan (U. Begaliev, A. Duishev, and R. Musakov)

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Category: terms
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It is clear that the building is an industrial building, but the exact type of industrial use is unknown.

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Category: terms
Hits: 540

Wooden shingles are usually split wood, overlapping and fastened to wood battens. Wooden shingles are usually made of cedar, redwood, hardwood etc. Asphalt shingles are small overlapping sheets of asphalt, usually fastened to a plywood sheet substrate. An alternative form is made of glass fiber or polyester fleece impregnated with bituminous material (tar, asphaltic bitumen).

RMT7_USA_Krstic_1RMT7_USA_Krstic_2

Wooden shingle roof covering, USA (S. Krstic)

RMT7_Canada_BrzevS_1

RMT7_Canada_Brzev_2

A roof with asphalt shingle covering, Canada (S. Brzev)

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Category: terms
Hits: 489

The type of roof covering is unknown. There is insufficient information available or it is not visible from a survey.

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Category: terms
Hits: 485

At least one structural irregularity (plan and/or vertical) listed in the table is present. A primary (plan or vertical) Irregularity is considered to increase the seismic vulnerability of the building more than the Secondary Irregularity.

  1. Hot-rolled steel members [SR]
  2. Floor material, other [FO]
  3. Heavy wood [WHE]
  4. Approximate height of ground floor level above grade [HFAPP]

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