US3489156A - Suspended roof construction - Google Patents

Suspended roof construction Download PDF

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Publication number
US3489156A
US3489156A US525659A US3489156DA US3489156A US 3489156 A US3489156 A US 3489156A US 525659 A US525659 A US 525659A US 3489156D A US3489156D A US 3489156DA US 3489156 A US3489156 A US 3489156A
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US
United States
Prior art keywords
sheet
loop
mast
towrope
membrane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US525659A
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English (en)
Inventor
Frei Otto
Peter Stromeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L Stromeyer and Co GmbH
Original Assignee
L Stromeyer and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L Stromeyer and Co GmbH filed Critical L Stromeyer and Co GmbH
Application granted granted Critical
Publication of US3489156A publication Critical patent/US3489156A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/14—Suspended roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/02—Tents combined or specially associated with other devices
    • E04H15/04—Tents combined or specially associated with other devices suspended type, e.g. from trees or from cantilever supports

Definitions

  • a suspended roof construction having a sheet-like member and holding means to tension such member.
  • a loop of flexible material which may be a tow rope connects the holding means to the sheet-like member.
  • the loop is secured to and lies entirely in the plane of the sheet-like member. The connection between the holding member and the loop will allow the tension forces to which the loop is subjected to pass practically through one point and under such conditions the loop assumes the shape of a continuous curve.
  • the present invention relates to a suspended roof construction having a sheet-like member and at least one holding member serving to tension the sheet-like member.
  • the invention relates therefore to roof structures, employing tenting, pre-stressed steel nets and rope netting, particularly the form of supported rope netting employed for suspended roofs, which are tensioned according to the curved membrane principle, particularly in the case of the smallest surface units, in saddle-shaped curvature, and in which this tension is efiected by supporting masts or towropes, which act thereon more or less normally to the surface of the structure within its extent and not at its outer edges.
  • the simple supporing mast and similarly the towrope are however, by their nature, only capable of imparting or receiving a localised force if they act directly on the surface in the said way. Therefore, as is known, a fitting with a suitable intermediate member is required at every point of attachment, so that from the localised force a distributed load results in the sheet-like surface of the structure, and indeed an adequately uniformly distributed load, and so that the resultant tension in the sheet-like member increases gradually and without a pronounced peak above the pattern of tension in the remaining regions of the surface which are not so near to the point of attachment.
  • the tension in the sheet-like member should thus reach, in the neighborhood of the supporting mast or towrope where it has a maximum value, a value which is only a moderate amount above the average value of the tension in the sheet-like member. How well or badly this rule is fulfilled will in each case depend, as is known, on the nature of the roof construction or the shape of the structure. Accordingly it is considered that the surface of the sheet-like member should not be stretched either to a pronounced peak or to a vary steep bulge outwards or inwards by the force of the supporting mast or towrope.
  • the above mentioned rope may be laid as a wide loop on or in the surface of the sheet-like member and firmly secured to the material of the same along the whole or almost the whole of the circumference of the loop, for example continuously sewn on or in, if the sheet-like member consists of tent cloth; and the supporting mast or the towrope is attached at a single point of the circumference of the loop so that there results between this and the loop what in building terms is known as a point" power connection.
  • the function of the arrangement according to this invention may however just as well be explained as follows: All the tension forces in the sheet-like member around the attached loop are concentrated by means of the same to a single point, i.e. the point of attachment of the supporting mast or towrope, so that, resulting from these forces, a single force is to be imagined at the said point, namely the counterforce necessary to oppose the single stretching force applied by the supporting mast or towrope.
  • the roof construction forming the subject of the present invention is accordingly characterised by the fact that the sheet-like member is connected with the holding member by at least one loop which is secured to the sheet-like member in such a way that it absorbs the tension forces in the sheet-like member acting thereon and transmits them to the holding member.
  • this region may even, if desired, be wholly removed, and this is also within the scope of the invention.
  • the opening formed by the removal of the region within the loop may then be covered by any construction, for example with a skylight, but preferably in such a way that this construction does not exert undue influence on the tension forces in the sheet-like member.
  • the opening formed may however also be used as a passage, for example as a passage for the top of a supporting mast, for ropes and for other possible structural elements and parts 3 of apparatus.
  • a cover or closure means may also be provided.
  • the loop adopts a characteristic curved form which tends towards a solid curve of uniform curvature, although in practice, such an ideal curve is not always achieved owing to the inhomogeneities always present in the sheet-like material.
  • the converging tension forces in the sheet-like member may be transmitted, to a point support, in practice the relatively small cross-section or circumference of a supporting mast or towrope, through a plurality of loops forming a group.
  • These individual loops of the group may be the same as each other as far as their diameter is concerned.
  • the individual loops are preferably disposed symmetrically with respect to each other and arranged so that the axis of the supporting mast or towrope coincides with or is located close to the centre of this symmetry.
  • the loops of the group may have different diameters and thus enclose surface regions of different areas.
  • a plurality of spaced-apart loops and/or a plurality of spaced-apart groups of loops may be attached, and if desired, supporting masts and/or towropes therefor may be employed and spaced apart in the same way.
  • the principle of roof construction according to the invention may also be realised, as already mentioned, with a stretched rope netting, and in particular with a rope netting which is braced or may be covered or lined with roof skin material of a great variety of types including rigid types.
  • a stretched rope netting and in particular with a rope netting which is braced or may be covered or lined with roof skin material of a great variety of types including rigid types.
  • the loop or the group of loops may be secured directly to the meshes of the rope netting over the whole or substantially the whole circumference of the loop.
  • the netting may have square, rectangular, triangular or possibly even a rhombic mesh formation, prior to its being stretched in a curve.
  • the regions enclosed by the loops may also be removed in the case of a sheet-like member of netting.
  • each strand of the net should be firmly and carefully tied off at its cut end, mesh for mesh, at the loop, so that the removal of the enclosed region does not cause tearing of the netting.
  • the connection between the loop and the netting should be carried out as far as possible at every netting mesh touched by the loop and at all sides of the same. In every case, therefore, provision should be made for a reliable and positive fixing of the loop to the netting of adequate strength in all directions.
  • FIGURE 1 is a perspective view of a first embodiment of structural surface which is tensioned to a curved membrane by a single towrope;
  • FIGURE 2 is a side elevation of the structural surface of FIGURE 1 viewed in the direction of the arrow A in FIGURE 4;
  • FIGURE 3 is a side elevation of the same structural surface viewed in the direction of the arrow B in FIG- URE 1;
  • FIGURE 4 is a plan from above of the same structural surface viewed in the direction of the arrow C in FIG- URE 1;
  • FIGURE 5 is a perspective view of a second embodiment in which a supporting mast is used instead of a towrope, and
  • FIGURE 6 is a perspective view of a further embodiment of the arrangement shown in FIG. 5.
  • the surface of the membrane 1 bounded by the looped rope 4 is cut out in the present embodiment so that an opening is formed at the place indicated with the reference numeral 5.
  • the looped rope 4 is curved downwardly and in consequence imparts a curved surface to the membrane 1 attached thereto.
  • Stretching of the membrane 1 at its edges may be effected in any way and is not critical as regards the present invention.
  • the arm 12 is provided with a radial slot opening outwardly in which the extension 13 is located and then locked in position by known means.
  • a suspended roof construction having a sheet-like member and at least one holding member in the form of 5 a mast serving to tension said sheet-like member, said sheet-like member having an opening for the throughpassage of said mast, at least two loops of flexible material are arranged symmetrically on said sheet-like member on a circle generally concentric With said opening and con- 5 necting said sheet-like member to said mast, at least one of said loops being secured to and lying substantially entirely in the plane of said sheet-like member, the free end of each loop being anchored to that part of said mast projecting above said sheet-like member, the connection between said holding member mast and said loops allowing the tension forces gathered by said loops to pass practically through one point, and said loops under the influence of these forces each assuming the shape of a continuous curve.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Tents Or Canopies (AREA)
US525659A 1965-02-05 1966-02-07 Suspended roof construction Expired - Lifetime US3489156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST23319A DE1228050B (de) 1965-02-05 1965-02-05 Membranartig gespannte Bauwerksflaeche, insbesondere Zeltdach, Seilnetz od. dgl.

Publications (1)

Publication Number Publication Date
US3489156A true US3489156A (en) 1970-01-13

Family

ID=7459711

Family Applications (1)

Application Number Title Priority Date Filing Date
US525659A Expired - Lifetime US3489156A (en) 1965-02-05 1966-02-07 Suspended roof construction

Country Status (7)

Country Link
US (1) US3489156A (da)
BE (1) BE676018A (da)
CH (1) CH451481A (da)
DE (1) DE1228050B (da)
FR (1) FR1478413A (da)
GB (1) GB1129973A (da)
NL (1) NL6601326A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248546A (en) * 1979-06-27 1981-02-03 Danner Donald J Manhole ceiling tent
US5067920A (en) * 1991-03-12 1991-11-26 Brisky Michael J Dive flag line dispenser apparatus
EP1067256A2 (de) * 1999-07-09 2001-01-10 Georg Chatzakos Bewegliche Überdachung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2255793C3 (de) * 1972-11-15 1982-01-07 Balcke-Dürr AG, 4030 Ratingen Verfahren zur Montage eines Kühlturmmantels
FR3087465B1 (fr) 2018-10-22 2020-10-16 Easia Travel Consulting Tente avec structure autoportante

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB131872A (da) *
US858875A (en) * 1907-01-18 1907-07-02 Roy Knabenshue Tent.
US1081699A (en) * 1912-12-02 1913-12-16 Wenzel Tent & Duck Co H Tent.
US1410820A (en) * 1921-09-15 1922-03-28 Jr James Mcmillan Combined collision mat and torpedo-deflecting device
US1730565A (en) * 1929-02-05 1929-10-08 Walter J Flintjer Tent-supporting frame
DE872395C (de) * 1951-12-11 1953-03-30 Stromeyer & Co G M B H L Grossraumzelt

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB131872A (da) *
US858875A (en) * 1907-01-18 1907-07-02 Roy Knabenshue Tent.
US1081699A (en) * 1912-12-02 1913-12-16 Wenzel Tent & Duck Co H Tent.
US1410820A (en) * 1921-09-15 1922-03-28 Jr James Mcmillan Combined collision mat and torpedo-deflecting device
US1730565A (en) * 1929-02-05 1929-10-08 Walter J Flintjer Tent-supporting frame
DE872395C (de) * 1951-12-11 1953-03-30 Stromeyer & Co G M B H L Grossraumzelt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248546A (en) * 1979-06-27 1981-02-03 Danner Donald J Manhole ceiling tent
US5067920A (en) * 1991-03-12 1991-11-26 Brisky Michael J Dive flag line dispenser apparatus
EP1067256A2 (de) * 1999-07-09 2001-01-10 Georg Chatzakos Bewegliche Überdachung
EP1067256A3 (de) * 1999-07-09 2002-08-28 Georg Chatzakos Bewegliche Überdachung

Also Published As

Publication number Publication date
BE676018A (da) 1966-06-16
FR1478413A (fr) 1967-04-28
GB1129973A (en) 1968-10-09
CH451481A (de) 1968-05-15
NL6601326A (da) 1966-08-08
DE1228050B (de) 1966-11-03

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