Long Span Roof Structures

Long span roofs can create flexible column free internal spaces and can reduce substructure costs and construction times.

Long span roof structures.

Precast concrete tensioned 3. See more ideas about structure architecture architecture architect. Long span structure s structures with span larger than 15 20 meters are regarded to as long span structures. By general consensus longspan structures are at least 20 meters about 65 feet.

The experience collected in last decades identified structural typologies as space structures cable structures membrane structures and new under tension efficient materials. Within these general forms of long span structure the materials used and labour required for assembly are an important constraint along with other economic factors. The stakes are very high and very few structural engineering firms have the required technical chops and experience with this scale of roof. They are commonly found in a wide range of building types such as factories warehouses agricultural buildings hangars large shops public halls gymnasiums and arenas.

Portal frame prefabricated steel. From the roman pantheon to the renaissance duomo to the astrodome spanning large spaces has always challenged engineers and builders. Long span roofs are generally defined as those that exceed 12 m in span. Portal frame insitu rc 6.

10 to 1. Insitu rc tensioned 2. 2 and the cable stayed roof the bicycle wheel and warped tension surfaces which act in pure tension. Portal frame precast 7.

The advantage of long span buildings is that there is more space inside. The funicular structures include the parabolic arch tunnel vault and dome which act in pure compression and which have a rise to span ratio of 1. Structural steel prefabricated and installed on spot 5. Longspan buildings are popular for sports arenas and other applications requiring maximum visibility and for bulk storage and retail uses requiring large clear area.

This seminar will provide an overview of the design of long span steel roofs including a survey of recent long span structure types concept planning for long span roofs roof materials loading criteria including wind tunnel testing analysis. Generally long spans result in flexible column free internal spaces reduces substructure costs and time to erect the structure. For such structures span is unable to be achieved with ordinary r c c. Apr 14 2014 explore sophia panova s board long span roofs on pinterest.

More recently the addition of kinetic roof elements have further added to the allure of long span construction. See more ideas about building structure architecture structures. Sep 11 2015 explore kaia meier s board large span buildings structures on pinterest. Structural steel erected on spot 4.