US3765134A - Construction of rigid tensioned frame structure - Google Patents

Construction of rigid tensioned frame structure Download PDF

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Publication number
US3765134A
US3765134A US00062265A US3765134DA US3765134A US 3765134 A US3765134 A US 3765134A US 00062265 A US00062265 A US 00062265A US 3765134D A US3765134D A US 3765134DA US 3765134 A US3765134 A US 3765134A
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United States
Prior art keywords
tensioned
wires
roof structure
layer
purlins
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Expired - Lifetime
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US00062265A
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English (en)
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T Gilchrist
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1407—Greenhouses of flexible synthetic material
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1469—Greenhouses with double or multiple walls
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/22—Shades or blinds for greenhouses, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

  • the present invention relates to rigid tensioned roof supporting frame structures in which the roof is formed of plastics material or other flexible roofing membrane. More particularly, the invention is concerned with a greenhouse or like horticultural or agricultural building (hereinafter referred to collectively as a greenhouse) in which the roof covering is a plastics material or similar flexible membrane.
  • An object of a preferred construction of green-house according to the present invention is to provide a green-house structure which eliminates all the aforementioned inherent structural, economic and horticultural disadvantages of orthodox green-houses, in providing an artificial climate and environment for maximum commercial growth of flowers and vegetables.
  • the rigid tensioned frame structure as described above may be sheeted over its complete external surface with a single layer of flexible membrane.
  • the provision of heat insulation is desirable. This is particularly important when plastic sheeting, which has a -15 percent greater heat loss than glass is used, as a roofing material. Consequently. the invention provides means for cladding the structure with a two or more layers of flexible membrane.
  • FIG. 1 is a perspective view of the roof and gable section ofa single span greenhouse according to the invention
  • FIG. 2 is a perspective view of a single span greenhouse having a construction different to that of FIG. 1,
  • FIG. 7 is a diagrammatic cross-section of a single span greenhouse
  • FIG. 7c is a diagrammatic side view of the greenhouse illustrated in FIG. 3,
  • FIG. 9 is a diagrammatic cross sectional view of a greenhouse illustrating the use of fans and vents
  • FIG. 16 shows, in perspective, a detail of FIG. 15,
  • FIG. 19 is a longitudinal elevation showing two alternative systems of pulleys for tensioning of the top layers of resilient members for supporting of the roof membrane,
  • FIG. 21 is a cross-section of a greenhouse having a removable layer of insulation material suspended from roof
  • FIG. 22 is a longitudinal section of the greenhouse in FIG. 21 with the insulation material in the partially removed position
  • FIG. 23 is a longitudinal section of the greenhouse in FIG. 21 with the insulation material in the position of use.
  • FIG. 1 there is illustrated a greenhouse of relatively simple construction in accordance with the present invention and which comprises concrete foundation members or elements (not shown) which are located below cultivation level in such a manner as to allow the structure to be readily removed to another site and/or to allow the soil to be cultivated with mechanical machinery.
  • the concrete foundation elements support a series of tensioned trellis trusses which are located in spaced apart rows, each row containing three trusses 2, 2a, the central truss 2a in each row being higher than the outer trusses 2.
  • each of the outer trusses 2 in each row of trusses and connected at the upper extremity of the central truss 2a are stabilizing elements 3 while extending directly between the upper extremities of the outer trusses 2 in each row is a crop support member 4 the height and strength of which is determined by the weight and quantity of the crop to be grown in the greenhouse.
  • the crop support member 4 is parallel to the ground and perpendicular to each of the trusses 2, 2a, to which it is connected.
  • each of the outer trusses 2 in each row is a strut 5 operatively connected between the upper extremities of each of the outer trusses 2 and between a tensile foundation member (not shown).
  • the strut 5 may be tensioned by a turnbuckle 5a.
  • the rows of trellis trusses 2,211, at each gable end of the structure, are additionaly stabilized by struts 6, 6b operatively connected between the upper extremities of the trellis trusses 2 and ground anchorage units (not shown), the struts 6, 6b being tensioned by turnbuckles 6a.
  • the gable end rows of trusses 2 support a main wire anchorage unit 7, which is additionally stabilized by struts 6d, operatively connected between the said main wire anchorage unit 7 and ground anchorage units (not shown) and tensioned by turnbuckles 6a.
  • purlin 11 Connected to the upper extremities of the trusses 2a in each row of trusses 2 is a purlin 11 which defines the apex of the structure, while connected between the upper extremities of the outer trusses 2 are a pair of purlins 12 each of which is parallel to the other and to the purlin III, the latter and the purlins 12 forming the main framework of the structure. Furthermore purlins 13 are connected between opposed wire anchorage units 7 and are located adjacent ground level.
  • Curved stabilizing units 14 extend diagonally from an outer truss 2 in one row to an outer truss 2 on the remote side of a spaced apart row of trusses 2.
  • a curved base plate 16 is fixed to the ground below cultivation level and is utilized in association with the main wire anchorage unit 7 to form a frame for the gable end of the structure.
  • FIGS. 2 and 3 show greenhouses similar, but not identical, to FIG. 1. In the constructions illustrated in FIGS. 2 and 3, however, a pair of curved wire anchorage units 31 are positioned as shown so as to form equal angles at each corner of a greenhouse construction.
  • transverse strut which defines a door to one gable end of the greenhouse.
  • FIGS. 4, 5 and 6 show the construction of a single span greenhouse similar to that described in FIG. I but which has two main wire anchorage units 35 each disposed at an acute angle to the ground and inclined so that the trusses 2 and 2a are also inclined and in the same plane.
  • the main wire. anchorage unit 35 is similar to the main wire anchorage unit 7 previously described with reference to FIG. 1.
  • the trusses 36, and 36a are substantially similar to the struts 6 and 6b respectively.
  • the central truss 36a projects above the upper curved extremity of the wire anchorage units 35.
  • an intermediate purlin 38 between each of which, and the central purlin 37, are standard outwardly opening roof ventilators 39 whic may be operated by any of the orthodox manual or automatic control means.
  • the curved stabilizing units 14 shown in FIG. 4 and 5 are not continued across the apex of the structure as in FIG. II. It will be appreciated that the central purlin 37 and similarly the purlin 11 (reference FIG. 1) are not required when the structure is ventilated by extractor fans. The use of extractor fans is described hereinafter.
  • FIG. 7 shows a diagrammatic crosssection of a simple structure involving the use of a pair of curved main anchorage units 7 at each extremity of the structure without the employment of internal trellis trusses.
  • the construction of FIG. 7 is normally employed only in minimum span structures where the use of trellis trusses is not warranted.
  • FIGS. 7a, 7b and 70 show in diagrammatic form the three main wire anchorage systems described with reference to FIGS. 1, 3 and 4.
  • FIG. 7a illustrates a vertical main anchorage unit 7 with or without trellis trusses stayed in the vertical position by struts 6, 6b and 6d which are connected to the curved base plate 16 and is thus similar to the greenhouse illustrated in FIG. 1.
  • FIG. 7b illustrates the main anchorage unit 35, with or without trellis trusses, disposed at an acute angle to the ground and supported by means of the struts 6, 6b and 6d.
  • FIG. 7c is a diagrammatic side view of the greenhouse illustrated in FIG. 3.
  • FIG. 9 shows diagrammatically a structure which has outer trusses 2 but no central truss.
  • a forced extraction electric fan 40a of conventional construction, housed in a ducting 15.
  • a series of inward opening vents 40 On the opposite side of the structure there is provided a series of inward opening vents 40. In use air from the inside of the structure may be exhausted to atmosphere by operation of the fans 400, such air being replaced by fresh air through the vents 40.
  • FIG. 15 illustrates one preferred method whereby the flexible roofing membrane 23 may be secured to a longitudinal purlin 11.
  • the purlin 11 may be manufactured from a rectangular section of pressure preserved and waterproofed timber, two iongitudinal portions of which are cut away to provide abutment members 41 for containing the flexible membrane 23 as described hereinafter.
  • abutment members 41 for containing the flexible membrane 23 as described hereinafter.
  • Located below the co-planar faces 42 of the purlin on opposite sides of the projecting portion 11b of the purlin 11 are provided spaced apart and axially parallel apertures 43 extending transversely through the purlin 11 for accommodating double headed bolts 44 each of which has a wing nut 45 on each end thereof.
  • a flat steel washer or pressure plate 46 Between each wing nut 45 and the contiguous side of the purlin 11 is provided a flat steel washer or pressure plate 46 so that, upon tightening of the wing nuts 45, the steel washers 46 cause the abutment members 41 to press into and against the adjacent edges of the purlin 11.
  • the abutment members 41 may be the same length as the purlin 11, or may be cut into shorter sections, fixed independently by any required number of wing nuts 45, for convenience in handling.
  • the flexible membrane 23, on each side of the purlin 11, is fully twisted around the appropriate abutment member 41 and firmly secured against the abutment member 41 by the steel washer 46, the area of contact between the steel washer 46 and the abutment member 41 being substantially airtight and watertight.
  • a second layer of roofing membrane 230 may be incorporated in the manner shown diagrammatically with reference to FIG. 17.
  • the layer 23a may serve to reduce the likelihood of failure of the primary roofing membrane 23, particularly at the connection point between a support member and the roofing membrane.
  • the layer 230 is used to form a longitudinal wear resistant strip against the abutment members 41 where a single sheet of roofing membrane only is fixed to the structure.
  • the layer 23a may span the entire roof area to form a second fixed insulating layer which is referred to hereinafter.
  • the invention provides in addition to the two main tensioned wires 21 and 24 described above, a plurality of secondary wires.
  • a lower transverse stabilising wire 24a may be fixed at right angles to the main longitudinal tensioned wire 21 between the longitudinal purlins 12 and 13. (reference FIGS. 18 and 18a).
  • the sheet plastic membrane 23 is supported and secured along all four sides of a series of rectangles or squares formed by the wires 21, 21a, 24 and 24a. For example when the maximum lift force on a building is 100,000 lbs the maximum lift on a sheet roofing membrane 1 foot square, so secured, would not exceed 40 lbs.
  • any movement of the roofing membrane will entail movement of the whole roof structure including both layers of wires.
  • the transverse tensioning of wires 24 and similarly wires 24a may be achieved by the use of an individual pulley attached to each wire 24 or by a selected number of pulleys 66 fixed to a longitudinal rigid unit 64 as shown in FIGS. 19 and 20.
  • the wires 24 can be individually attached to the longitudinal unit 64 as shown in FIG. 20 or a single wire may be threaded through a series of small holes 65 in the longitudinal unit 641 as shown in FIG. 19.
  • the pulleys 66 are connected by a continuous wire or cable 62 to a series of pulleys 67 which are suitably attached to the rigid purlin 12 forming a tensioning system as shown in the left hand side of FIGS. 19 and 20.
  • An alternative tensioning system may be formed by the use of a double pulley 68 attached to purlins 12 in place of the single pulley 67, as illustrated in the right hand side of FIGS. 19 and 20.
  • Tensioning'of the longitudinal tensioned wires 21 and 21a may be achieved by the connection of pulleys and tensioning units to the main curved wire anchorage units 7 and the gable base plates 13 (reference FIGS.
  • an alternative construction envisages double glazing the structure. This is achieved by a double layer of roofing membrane 23 and 23a which is fixed to the structure in the same manner as described above.
  • This double layer of roofing membrane forms, when in position, a plurality of sealed envelopes between the apertures formed by the contra tensioned wires 21 and 24, and secondary stabilising wires 21a and 24: a shown in FIG. 18b.
  • Air under pressure is introduced between the layers of roofing membrane. The air pressure forces the two layers apart in each mesh opening forming an insulated roof as illustrated in FIG. 18c.
  • each layer 70 of insulation material is slidably suspended by means of eyelets 74, of known construction, from the wires 69 one end of each layer 70 being connected to one of the curved stabilising units and other end of each layer 70 being connected to a buffer element 71 slidably mounted on the wires 69.
  • Each buffer element 71 has a front face 75 constructed from a resilient material such as foam rubber.
  • control means such as a photoelectric call may be utilised to control the electric motors (not shown) used to draw the control wires 72 and 73 across the structure.
  • the insulation material is drawn across the structure when the incident light is below a desired minimum, while the insulation material is removed when the incident light is sufficient for horicultural purposes.
  • the insulation layer may comprise a layer of opaque material which may be drawn across the structure during some of the daylight hours to control the growth of the plants.
  • the roof structure of claim 1 further comprising tensioned trellis trusses supporting at least one of the stabilizing purlins and extending substantially perpendicularly from the ground.
  • one of said stabilizing purlins is an apex purlin.
  • said tensioning means comprises a pulley system, each layer consisting of a length of steel wire associated with the pulley system and arranged in grid formation.
  • the roof structure of claim 1 further comprising a slidable sheeting movably mounted under the layers of contra-tensioned elongated flexible elements.
US00062265A 1967-10-26 1970-08-10 Construction of rigid tensioned frame structure Expired - Lifetime US3765134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE671288A IE31513L (en) 1967-10-26 1967-10-26 Roof structure.

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US (1) US3765134A (da)
BE (1) BE721592A (da)
DE (1) DE1800717A1 (da)
DK (1) DK124652B (da)
FR (1) FR1586497A (da)
GB (1) GB1236608A (da)
IE (1) IE31513L (da)
IL (1) IL30801A (da)
NL (1) NL6813979A (da)
NO (1) NO125289B (da)
SE (1) SE354682B (da)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885360A (en) * 1973-07-03 1975-05-27 Air Tech Ind Inc Reinforces inflatable
US3892094A (en) * 1973-06-04 1975-07-01 William N Spray Shelter having a stressed frame with a flexible sheathing thereon
US3899854A (en) * 1973-05-14 1975-08-19 Jon Vredevoogd Method of erection for a pretensioned membrane structure
US3961442A (en) * 1974-07-29 1976-06-08 Carter Martin F Portable greenhouse
US3990194A (en) * 1973-05-14 1976-11-09 Tension Structures Co. Arch supported membrane structure and a method of erection that pretensions the arches and membranes
US4064648A (en) * 1976-02-23 1977-12-27 Roll-Out Insulation Systems, Inc. Weather responsive insulation system for greenhouses and the like
US4837990A (en) * 1986-06-24 1989-06-13 Alexander Peleg Sheltering structures and a method of assembling same
US4852599A (en) * 1988-04-22 1989-08-01 Random Wheels, Inc. Portable shelter frame structure
US5197238A (en) * 1989-06-15 1993-03-30 Alexander Peleg Enclosed structures
US20030024561A1 (en) * 2001-07-31 2003-02-06 Gillis Robert E. Emergency shelter structure
US6615550B2 (en) * 2001-06-15 2003-09-09 Haworth, Inc. Covered work space arrangement
US20040049976A1 (en) * 2002-09-13 2004-03-18 Maffei James Anthony Plant protection device and method
FR2856886A1 (fr) * 2003-07-02 2005-01-07 Filclair Sa Structure du type serre a entretoise deportee.
US6997198B1 (en) * 1998-07-10 2006-02-14 Egbert Berend Holtkamp Tent construction and method for manufacturing this tent construction
US20060162247A1 (en) * 2003-01-07 2006-07-27 CORBETT Thomas Polytunnel system
US7127861B2 (en) * 2000-12-15 2006-10-31 State Of Israel, Ministry Of Agriculture And Rural Development Agricultural Research Organization, Volcani Center Multi-purpose structure
US7178538B2 (en) 2004-11-12 2007-02-20 Ransom Robert M Portable, selectively-reversible enclosure
US20070283992A1 (en) * 2006-06-10 2007-12-13 Timothy Joseph Hennessy Embrace-Air "TM" situates air conditioner and method for use with tent
US20080034679A1 (en) * 2006-05-10 2008-02-14 Ballard Terry M Door assembly for a portable shelter with arched vestibule
US20080307718A1 (en) * 2007-06-13 2008-12-18 Murray Ellen Domed steel roof frame
US20080307719A1 (en) * 2007-06-13 2008-12-18 Murray Ellen Domed non-steel roof frame
US20110023759A1 (en) * 2007-01-10 2011-02-03 Bastogne Manufacturing, Llc Blast Resistant Shelter
CN107155719A (zh) * 2017-06-09 2017-09-15 合肥市川丘生态农业科技发展有限公司 蔬菜大棚
CN107155720A (zh) * 2017-06-09 2017-09-15 合肥市川丘生态农业科技发展有限公司 农用大棚
CN107155714A (zh) * 2017-06-09 2017-09-15 合肥市川丘生态农业科技发展有限公司 一种蔬菜大棚
CN107846849A (zh) * 2015-08-20 2018-03-27 小诸布引草莓园株式会社 拉伸构造的建筑物
CN108518008A (zh) * 2018-03-23 2018-09-11 中建钢构有限公司 柔性拉索结构上的刚性屋盖结构及其安装方法
WO2019008557A1 (fr) * 2017-07-07 2019-01-10 Barre Andre Serre agricole deplacable rigidifiee par des entretoises souples
CN109629693A (zh) * 2019-02-12 2019-04-16 中建钢构有限公司 大跨度自锚式正交悬索结构及施工方法
EP3566010A4 (en) * 2017-01-25 2020-09-09 Glasspoint Solar, Inc. THIN FILM WRAP STRUCTURES INTENDED TO CAPTURE SOLAR ENERGY, AND ASSOCIATED SYSTEMS AND PROCESSES
CN113585476A (zh) * 2021-08-17 2021-11-02 华星钢构股份有限公司 一种椭圆柱双曲面钢结构空间网壳支撑结构
US11602103B2 (en) * 2018-07-06 2023-03-14 Edward Scott Carlson Outward angled plant support system, method, and apparatus

Families Citing this family (5)

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FR2373960A1 (fr) * 1976-12-14 1978-07-13 Piruerez Serre
SE422872B (sv) * 1977-07-07 1982-04-05 Heden Carl Goeran Sett och anordning for att klimatisera en byggnadskonstruktion
FR2544771B1 (fr) * 1983-04-25 1985-12-20 Rhone Poulenc Films Dispositif pour la mise en place, le retrait ou l'etablissement d'au moins un ecran souple
DE3540758A1 (de) * 1985-09-23 1987-04-02 Heescher Felix Vorrichtung zum betreiben einer schattierungs- bzw. waermedaemmanlage in gewaechshaeusern od. dgl.
NL1001501C2 (nl) * 1995-10-26 1997-05-02 C & J Bosman B V Draagconstructie voor een foliedek.

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US3137097A (en) * 1960-04-14 1964-06-16 Zeinetz Bertil Olov Roof structure
US3315727A (en) * 1963-09-16 1967-04-25 Morton L Clark Sunshade for ceiling construction
US3328926A (en) * 1965-05-06 1967-07-04 Ador Corp Inflatable housing construction
US3336704A (en) * 1964-12-15 1967-08-22 Wallace A Clay Sheet web roof structure with underlying and overlying constraining wires
US3449874A (en) * 1967-08-21 1969-06-17 Jean L Beaupre House anchorage

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US514955A (en) * 1894-02-20 Fireproof structure
US2074656A (en) * 1931-07-03 1937-03-23 Luhl Fritz Wall or roof construction
US2693195A (en) * 1952-07-03 1954-11-02 Frieder Portable shelter
US2881718A (en) * 1954-02-19 1959-04-14 Stromeyer & Co Gmbh L Undulating tensioned roof construction
US3137097A (en) * 1960-04-14 1964-06-16 Zeinetz Bertil Olov Roof structure
US3315727A (en) * 1963-09-16 1967-04-25 Morton L Clark Sunshade for ceiling construction
US3336704A (en) * 1964-12-15 1967-08-22 Wallace A Clay Sheet web roof structure with underlying and overlying constraining wires
US3328926A (en) * 1965-05-06 1967-07-04 Ador Corp Inflatable housing construction
US3449874A (en) * 1967-08-21 1969-06-17 Jean L Beaupre House anchorage

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899854A (en) * 1973-05-14 1975-08-19 Jon Vredevoogd Method of erection for a pretensioned membrane structure
US3909993A (en) * 1973-05-14 1975-10-07 Vredevoogd Jon Arch supported membrane structure
US3990194A (en) * 1973-05-14 1976-11-09 Tension Structures Co. Arch supported membrane structure and a method of erection that pretensions the arches and membranes
US3892094A (en) * 1973-06-04 1975-07-01 William N Spray Shelter having a stressed frame with a flexible sheathing thereon
US3885360A (en) * 1973-07-03 1975-05-27 Air Tech Ind Inc Reinforces inflatable
US3961442A (en) * 1974-07-29 1976-06-08 Carter Martin F Portable greenhouse
US4064648A (en) * 1976-02-23 1977-12-27 Roll-Out Insulation Systems, Inc. Weather responsive insulation system for greenhouses and the like
US4837990A (en) * 1986-06-24 1989-06-13 Alexander Peleg Sheltering structures and a method of assembling same
US4852599A (en) * 1988-04-22 1989-08-01 Random Wheels, Inc. Portable shelter frame structure
US5197238A (en) * 1989-06-15 1993-03-30 Alexander Peleg Enclosed structures
US6997198B1 (en) * 1998-07-10 2006-02-14 Egbert Berend Holtkamp Tent construction and method for manufacturing this tent construction
US7127861B2 (en) * 2000-12-15 2006-10-31 State Of Israel, Ministry Of Agriculture And Rural Development Agricultural Research Organization, Volcani Center Multi-purpose structure
US6615550B2 (en) * 2001-06-15 2003-09-09 Haworth, Inc. Covered work space arrangement
US20030024561A1 (en) * 2001-07-31 2003-02-06 Gillis Robert E. Emergency shelter structure
US7004183B2 (en) * 2001-07-31 2006-02-28 Robert E. Gillis Emergency shelter structure
US20040049976A1 (en) * 2002-09-13 2004-03-18 Maffei James Anthony Plant protection device and method
US20060162247A1 (en) * 2003-01-07 2006-07-27 CORBETT Thomas Polytunnel system
FR2856886A1 (fr) * 2003-07-02 2005-01-07 Filclair Sa Structure du type serre a entretoise deportee.
US7178538B2 (en) 2004-11-12 2007-02-20 Ransom Robert M Portable, selectively-reversible enclosure
US20080034679A1 (en) * 2006-05-10 2008-02-14 Ballard Terry M Door assembly for a portable shelter with arched vestibule
US20070283992A1 (en) * 2006-06-10 2007-12-13 Timothy Joseph Hennessy Embrace-Air "TM" situates air conditioner and method for use with tent
US20110023759A1 (en) * 2007-01-10 2011-02-03 Bastogne Manufacturing, Llc Blast Resistant Shelter
US20080307718A1 (en) * 2007-06-13 2008-12-18 Murray Ellen Domed steel roof frame
US20080307719A1 (en) * 2007-06-13 2008-12-18 Murray Ellen Domed non-steel roof frame
US20100251631A1 (en) * 2007-06-13 2010-10-07 Murray Ellen Domed Non-Steel Roof Frame
US20100269421A1 (en) * 2007-06-13 2010-10-28 Murray Ellen Domed Steel Roof Frame
US8381457B2 (en) 2007-06-13 2013-02-26 S2 Holdings Pty Limited Domed steel roof frame
US8381456B2 (en) * 2007-06-13 2013-02-26 S2 Holdings Pty Limited Domed non-steel roof frame
CN107846849A (zh) * 2015-08-20 2018-03-27 小诸布引草莓园株式会社 拉伸构造的建筑物
EP3566010A4 (en) * 2017-01-25 2020-09-09 Glasspoint Solar, Inc. THIN FILM WRAP STRUCTURES INTENDED TO CAPTURE SOLAR ENERGY, AND ASSOCIATED SYSTEMS AND PROCESSES
CN107155720A (zh) * 2017-06-09 2017-09-15 合肥市川丘生态农业科技发展有限公司 农用大棚
CN107155714A (zh) * 2017-06-09 2017-09-15 合肥市川丘生态农业科技发展有限公司 一种蔬菜大棚
CN107155719A (zh) * 2017-06-09 2017-09-15 合肥市川丘生态农业科技发展有限公司 蔬菜大棚
WO2019008557A1 (fr) * 2017-07-07 2019-01-10 Barre Andre Serre agricole deplacable rigidifiee par des entretoises souples
FR3068570A1 (fr) * 2017-07-07 2019-01-11 Andre Barre Serre agricole deplacable comportant une ossature avec arceaux reunis par au moins une entretoise de forme particuliere et une couverture dotee d'un systeme lateral d'aeration simplifie
CN108518008A (zh) * 2018-03-23 2018-09-11 中建钢构有限公司 柔性拉索结构上的刚性屋盖结构及其安装方法
US11602103B2 (en) * 2018-07-06 2023-03-14 Edward Scott Carlson Outward angled plant support system, method, and apparatus
CN109629693A (zh) * 2019-02-12 2019-04-16 中建钢构有限公司 大跨度自锚式正交悬索结构及施工方法
CN113585476A (zh) * 2021-08-17 2021-11-02 华星钢构股份有限公司 一种椭圆柱双曲面钢结构空间网壳支撑结构

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IL30801A (en) 1972-05-30
FR1586497A (da) 1970-02-20
IE31513L (en) 1969-04-26
NL6813979A (da) 1969-04-29
IL30801A0 (en) 1968-12-26
DE1800717A1 (de) 1969-05-14
DK124652B (da) 1972-11-13
NO125289B (da) 1972-08-14
BE721592A (da) 1969-03-03
SE354682B (da) 1973-03-19
GB1236608A (en) 1971-06-23

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