CN110924630A - Integrated steel structure hoistway with waiting hall and construction process thereof - Google Patents
Integrated steel structure hoistway with waiting hall and construction process thereof Download PDFInfo
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- CN110924630A CN110924630A CN201911231556.0A CN201911231556A CN110924630A CN 110924630 A CN110924630 A CN 110924630A CN 201911231556 A CN201911231556 A CN 201911231556A CN 110924630 A CN110924630 A CN 110924630A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 62
- 239000010959 steel Substances 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title description 8
- 238000005516 engineering process Methods 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/005—Lift shafts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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Abstract
The invention relates to an integrated steel structure hoistway with a waiting hall, which is provided with an elevator additionally arranged outside an existing building, and comprises a steel structure hoistway, wherein the steel structure hoistway comprises a bottom layer module, a plurality of sections of standard modules and a top layer module, the bottom layer module, the standard modules and the top layer module are fixedly connected, each unit module comprises six rectangular stand columns and cross beams fixedly arranged between the adjacent stand columns and arranged at the upper end and the lower end of each stand column respectively, at least one group of stiffening beams are arranged between the middle parts of the adjacent stand columns, a rectangular first hoistway for placing the elevator is formed between the four adjacent stand columns, and a second hoistway for arranging the waiting hall is formed between the first hoistway and the other two stand columns. The invention has the advantages of self-carrying elevator waiting hall, independence from the prior building, good stability, high assembly rate and high construction efficiency.
Description
Technical Field
The invention relates to the technical field of modularization additionally-installed elevators in the field of existing building transformation, in particular to an integrated steel structure hoistway with a waiting elevator hall and a construction process thereof.
Background
In recent years, with the increasing living standard of urban residents, people have higher requirements on living environment, and more desire comfortable living environment and convenient traffic. Particularly, China has entered the aging stage of population at present, and for the elderly residents living in high floors, the additional installation of the elevator is one of the important embodiments for improving the living conditions of the residents. The traditional residential building is additionally provided with the elevator, a brick-concrete structure, a concrete structure and a steel structure which are constructed on site are mainly used as an elevator shaft, elevator equipment is installed after civil engineering construction is finished, the construction period of the traditional elevator installation method is long (generally 3-6 months or even longer), the normal life of residents is interfered, the environment of a residential area is damaged, and even potential safety hazards are brought to the residents.
The invention discloses a conventional, referred and invented building block type elevator with an integrated steel strip structure of 201110142052.9, which comprises a rectangular steel structure well, wherein the rectangular steel structure well comprises a base, the base is sequentially provided with a bottom layer frame, at least one layer of middle layer frame, a top layer frame and a top cover from bottom to top, the base, the bottom layer frame, the middle layer frame and the top layer frame are connected in a matched manner through bolt assemblies, the base is formed by welding channel steel, each frame comprises 4 stand columns, the channel steel is welded between the tops of the stand columns to form top cross rods of the frames, the channel steel is welded between the bottoms of the stand columns to form bottom cross rods of the frames, and at least one group of middle cross rods is connected between the middle parts of the stand columns. The equipment provides a building block type elevator with integrated strip steel structure, which is safe, reliable, compact in structure, attractive, novel and convenient to install for the multi-storey buildings of old buildings.
The above prior art solutions have the following drawbacks:
1. because above-mentioned steel construction well constitutes for 4 stands, therefore, its self-stability is poor, need carry out the draw with former building and connect the stability of guaranteeing self, at present, generally adopt the vestibule to carry out the draw with the steel construction well, the vestibule can regard as the elevator room of waiting between elevator and the former building again to use simultaneously, but, when the installation of vestibule, need set up the scaffold frame, the construction is loaded down with trivial details, the construction cycle length, it is big to the resident influence, and the settlement of newly-built steel construction well self can exert an influence to former building stability.
2. According to the steel structure elevator with the structure, the elevator waiting hall is generally arranged between the steel structure shaft and the original building, and the length of the elevator waiting hall is 1.5-3m, so that the occupied space of the elevator on the road of the original building is increased, and the effective space of the road is seriously influenced compared with the effective space of an old building.
Disclosure of Invention
The invention aims to provide an integrated steel structure hoistway with a waiting elevator hall, which has the advantages of being independent of the original building, good in stability, high in assembly rate and high in construction efficiency.
The first purpose of the invention is realized by the following technical scheme:
the utility model provides a take integrated steel construction well of terraced room of waiting, includes the steel construction well, the steel construction well includes bottom module, multisection standard module and top layer module, fixed connection between bottom module, standard module and the top layer module, each unit module includes the stand that six rectangles were arranged and sets firmly the crossbeam at both ends about the stand between adjacent stand respectively, and is adjacent set up a set of stiffening beam at least between the stand middle part, wherein form the first well that is used for placing the elevator and is the rectangle between four adjacent stands, form the second well that is used for setting up the terraced room of waiting between first well and two other stands.
By adopting the technical scheme, the first shaft provided with the elevator and the second shaft provided with the waiting elevator hall are assembled together through the six stand columns, so that the shafts and the waiting elevator hall are assembled and molded together, the assembly rate of the modularized elevator is improved, and meanwhile, the self-stability of the steel structure shaft is increased, so that the steel structure shaft can be independent of the original building and can also ensure the stability of the steel structure shaft;
and because the steel construction well does not need to be drawn with former building and connect, outside being independent of former building, can also paste first well and second well respectively and tightly former building installation to reduce the occupation space of installing the elevator additional to former building road, for old building, reduce as far as and add the influence of elevator to the road in the former building, guarantee its effective space of passing.
The invention is further configured to: the steel construction well still sets firmly the basic frame at bottom module lower extreme, basic frame includes six square columns and sets firmly the square beam in the square column upper end between adjacent square column, the square column bottom sets firmly the steel sheet that is used for being connected with the pit foundation.
Through adopting above-mentioned technical scheme for be connected bottom module and pit foundation, simple to operate, stability is good.
The invention is further configured to: the utility model discloses a solar module, including stand, square column, stand and stand concatenation department, the stand is equipped with the otic placode with the square column, the stand is connected with the stand concatenation department and is set firmly the otic placode respectively, the otic placode sets up respectively in stand, the relative both sides of square column, the both sides of otic placode are equipped with the connecting plate of two upper and lower otic placode centre grippings, carry out interim location to two adjacent modules through bolted connection.
By adopting the technical scheme, the lug plates and the connecting plates are utilized to temporarily position the upper stand column and the lower stand column before the upper stand column and the lower stand column are welded, the mounting precision is higher, and the welding and fixing are more convenient.
The invention is further configured to: the top end of the upright post is fixedly provided with an inserting sleeve, and the inserting sleeve is inserted into the upright post of the upper module.
Through adopting above-mentioned technical scheme, the sleeve pipe of pegging graft plays the guide positioning effect when the module is assembled on the one hand, and on the other hand increases the stability that upper and lower stand is connected.
The invention is further configured to: the position that bottom module, standard module and top layer module correspond every floor stairwell half space is arranged in the second well and is set firmly the landing slab, the landing slab is connected fixedly with stand and crossbeam respectively, and is adjacent form between the landing slab and wait the terraced room.
Through adopting above-mentioned technical scheme, the factory installation platform board forms the ladder room of waiting on each module, reduces the construction process on scene, and the security is high, and the efficiency of construction is high.
The invention is further configured to: the top of the elevator waiting hall is provided with a decorative ceiling, the bottom of the elevator waiting hall is provided with a decorative floor, and the ceiling is provided with a ceiling lamp.
Through adopting above-mentioned technical scheme, with the integrative batch production construction of furred ceiling, decorative floor and ceiling lamp, avoid on-the-spot installation, the efficiency of construction is high.
The invention is further configured to: the building roof module comprises a bottom layer module, a standard module and a top layer module, wherein a building envelope covers the bottom layer module, the standard module and the top layer module, and a roof is arranged at the upper end of the top layer module.
By adopting the technical scheme, the external enclosure structure is directly prefabricated on each module in a factory, the field construction workload is reduced, and the installation efficiency of a well is improved.
The second purpose of the invention is to provide a construction process of an integrated steel structure hoistway with a waiting hall, which comprises the following steps:
s1, prefabricating a foundation frame, a bottom layer module, a standard module, a top layer module and a roof in advance according to a design drawing, and respectively arranging a platform plate, a suspended ceiling, a ceiling lamp and an enclosure structure at corresponding positions on the bottom layer module, the standard module and the top layer module;
s2, excavating a well pit, constructing a raft foundation, and positioning and pre-burying foundation bolts on the raft foundation;
s3, hoisting the foundation frame, wherein foundation bolts penetrate through corresponding bolt holes in the steel plate, and the foundation frame is fixed on the raft foundation through bolt connection;
s4, hoisting the bottom module, vertically lowering the bottom module, butting the stand column with the square column, inserting the inserting casing into the stand column, temporarily fixing the bottom module and the foundation frame by using the lug plates and the connecting plates through bolts, repeating the steps, sequentially hoisting and fixing the standard module and the top module, welding and fixing the splicing parts of the adjacent modules after the integral hoisting is completed, and finally dismantling the lug plates and the connecting plates.
Through adopting above-mentioned technical scheme, will set up the first well of elevator and set up the second well assembly of waiting the terraced room to be in the same place through six stands, improve the assembly rate of modularization elevator, increase the self-stability of steel construction well simultaneously, make it can be independent of also can guarantee the stability of self outside the former building, and with outside envelope and interior decorative structure an organic whole mill with each module assembly together, the elevator room is waited from the area, independent of outside the former building, good stability, the assembly rate is high and the high advantage of efficiency of construction.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the first shaft provided with the elevator and the second shaft provided with the elevator waiting hall are assembled together through the six upright posts, so that the assembly rate of the modularized elevator is improved, the self-stability of the steel structure shaft is increased, the steel structure shaft can be independent of the original building and can also ensure the stability of the steel structure shaft, and compared with the existing four-post elevator shaft, a scaffold does not need to be erected for constructing a corridor, the pull connection with the original building is avoided, the influence on the original building is reduced, and the elevator waiting hall and the shafts are integrated, so that the assembly rate is high, the stability is good, the construction efficiency is high, and the occupied space is small;
2. the external enclosure structure and the internal decoration structure are integrally assembled with the modules in a factory, so that the field construction procedures are reduced, the construction efficiency is improved, and the construction period is shortened.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the basic framework of the present invention;
FIG. 3 is a schematic diagram of the bottom module structure of the present invention;
FIG. 4 is a schematic diagram of a standard module configuration of the present invention;
fig. 5 is a schematic diagram of the top module structure of the present invention.
In the figure, 1, a steel structure hoistway; 11. a first hoistway; 12. a second hoistway; 2. a base frame; 21. a square column; 22. a square beam; 23. a steel plate; 3. a bottom layer module; 31. a column; 32. a cross beam; 33. a reinforcing beam; 34. an outlet; 35. an inlet; 4. a standard module; 5. a top layer module; 51. a roof; 6. an ear plate; 7. sleeving a sleeve; 8. a platform plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Referring to fig. 1, the integrated steel structure hoistway with a waiting hall disclosed by the invention comprises a steel structure hoistway 1, wherein the steel structure hoistway 1 comprises a base frame 2, a bottom layer module 3, a plurality of sections of standard modules 4, a top layer module 5 and a roof 51 which are sequentially arranged from bottom to top, the base frame 2, the bottom layer module 3, the standard modules 4 and the top layer module 5 are welded and fixed through splicing sleeves 7, and the roof 51 is fixedly arranged at the upper end of the top layer module 5. The bottom layer module 3, the standard module 4 and the top layer module 5 are respectively covered with an enclosure structure, and the enclosure structure can be glass, an aluminum plate, a heat-preservation integrated plate and the like.
Referring to fig. 2, foundation frame 2 includes six square columns 21, and six square columns 21 are the rectangle and arrange, and the position welding in square column 21 upper end has square beam 22 between the adjacent square column 21, and the lower extreme welding of square column 21 has square steel plate 23, and the steel plate 23 is gone up the spaced apart 4 bolt holes that are equipped with, and foundation frame 2 is fixed on the pit basis at the embedded rag bolt on elevator pit basis of cooperation.
Referring to fig. 1 and 3, each unit module includes six rectangular columns 31 and six cross beams 32 welded and fixed between adjacent columns 31, the cross beams 32 are respectively disposed at the upper and lower ends of the columns 31, at least one set of reinforcing beams 33 is disposed between adjacent columns 31, the reinforcing beams 33 are disposed between the upper and lower cross beams 32, and the two ends of the reinforcing beams 33 are respectively welded and fixed with the columns 31. And a first hoistway 11 for placing an elevator is formed between four adjacent vertical columns 31, the first hoistway 11 is rectangular, and a second hoistway 12 for arranging a waiting hall is formed between the first hoistway 11 and the other two vertical columns 31. An inlet 35 and an outlet 34 are respectively arranged on the bottom layer module 3 at the position of the second hoistway 12, the standard module 4 and the top layer module 5 are provided with the outlet 34 corresponding to the hole arranged on the original building, and the cross beam 32 or the reinforcing beam 33 corresponding to the inlet 35 and the outlet 34 are removed, so that the influence on the entrance and exit of pedestrians to and from the elevator is avoided. Wherein the upright column 31, the square column 21, the cross beam 32 and the reinforcing beam 33 are made of square steel.
Combine fig. 3, fig. 4 and fig. 5, at basic frame 2, bottom module 3, standard module 4, when splicing between the top module 5, stand 31 and square column 21 that correspond, stand 31 and stand 31 splice the punishment and do not have welded otic placode 6, otic placode 6 sets up respectively at stand 31, the both sides of square column 21, the both sides of otic placode 6 are equipped with stand 31 and square column 21 with splicing each other, the connecting plate of stand 31 and stand 31 centre gripping, the bolt hole that corresponds each other has been seted up respectively on connecting plate and the otic placode 6, through the bolt with basic frame 2 and bottom module 3, the module of each concatenation is temporarily fixed and is fixed a position.
The top ends of the upright column 31 and the square column 21 are respectively welded with the splicing sleeves 7, and the splicing sleeves 7 are inserted into the upright column 31 of the upper module when the upper module and the lower module are spliced.
The platform board 8 is fixedly arranged in the second shaft 12 at the position where the bottom module 3, the standard module 4 and the top module 5 correspond to the rest platform of each stair room, the platform board 8 is respectively connected and fixed with the upright columns 31 and the cross beams 32, can be in bolted connection and can also be welded, and a ladder waiting hall is formed between the upper and lower adjacent platform boards 8.
The top in the room of waiting the ladder is provided with decorates the furred ceiling, and the bottom is provided with decorative floor, and the furred ceiling comprises polylith and the fixed furred ceiling board of landing slab 8, and the ceiling lamp sets firmly on the furred ceiling board.
Example two
An integrated steel structure hoistway construction process with a waiting hall comprises the following steps:
s1, prefabricating in advance according to a design drawing to form the foundation frame 2, the bottom layer module 3, the standard module 4, the top layer module 5 and the roof 51, respectively arranging the platform plate 8, the suspended ceiling, the floor, the ceiling lamp and the enclosure structure at corresponding positions on the bottom layer module 3, the standard module 4 and the top layer module 5, detecting the quality of a finished product after machining is completed, pre-assembling after the finished product is qualified, and avoiding the problems of assembling errors and the like on a construction site.
S2, excavating a well pit, constructing a raft foundation, and positioning and pre-burying foundation bolts on the raft foundation.
S3, transport foundation frame 2, bottom module 3, standard module 4, top layer module 5 to the job site, hoist foundation frame 2, utilize the crane to hoist the lug of four angular points department of foundation frame 2 simultaneously, hoist foundation frame 2, and transfer along vertical direction, transfer to apart from rag bolt 100mm department, carry out artifical the alignment, continue slowly transferring after the alignment, rag bolt passes the bolt hole that corresponds on the steel sheet 23, transfer and utilize nut cooperation rag bolt to fix foundation frame 2 and raft foundation after accomplishing.
S4, hoisting the bottom module 3, the hoisting mode is the same as that of the foundation frame 2, the bottom module 3 is vertically lowered, the upright column 31 is butted with the square column 21, the inserting sleeve 7 is inserted into the upright column 31, the two sides of the lug plates 6 on the foundation frame 2 and the bottom module 3 are respectively provided with a connecting plate, bolt holes in the connecting plate are aligned with bolt holes in the lug plates 6, the bolts are initially screwed after being aligned, the foundation frame 2 and the bottom module 3 are temporarily fixed, a lifting hook and a steel wire rope on the bottom module 3 are detached, the steps are repeated, and the standard module 4 and the top module 5 are hoisted and fixed in sequence. After the integral hoisting of the steel structure well frame is completed, measuring the integral verticality of the steel structure well frame, screwing and fixing the bolts and the nuts at the splicing positions of the modules after the steel structure well frame is qualified, then welding and fixing the splicing positions of the modules, dismantling the lug plates 6 and the connecting plates after the completion of the welding and fixing, and finally installing the enclosing structure at the splicing positions.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a terraced room integration steel construction well is waited in area, includes steel construction well (1), its characterized in that: steel construction well (1) is including bottom module (3), multisection standard module (4) and top module (5), fixed connection between bottom module (3), standard module (4) and the top module (5), each unit module includes stand (31) that six rectangles were arranged and sets firmly crossbeam (32) in stand (31) upper and lower both ends respectively between adjacent stand (31), and is adjacent set up a set of stiffening beam (33) at least between stand (31) the middle part, wherein form between four adjacent stand (31) and be used for placing the elevator and be first well (11) of rectangle, form between first well (11) and two other stand (31) and be used for setting up second well (12) of waiting the terraced room.
2. The integrated steel structure hoistway of claim 1, which comprises: the steel construction well (1) is still including setting firmly basic frame (2) at bottom module (3) lower extreme, basic frame (2) include six square columns (21) and set firmly square beam (22) in square column (21) upper end between adjacent square column (21), square column (21) bottom sets firmly steel sheet (23) that are used for being connected with the pit foundation.
3. The integrated steel structure hoistway of claim 2, which comprises: upright column (31) and square column (21), upright column (31) and upright column (31) splice department have set firmly otic placode (6) respectively, otic placode (6) set up respectively in upright column (31), the relative both sides of square column (21), the both sides of otic placode (6) are equipped with the connecting plate of two otic placodes (6) centre grippings from top to bottom, carry out interim location to two adjacent modules through bolted connection.
4. The integrated steel structure hoistway of claim 1, which comprises: the top end of the upright column (31) is fixedly provided with an inserting sleeve (7), and the inserting sleeve (7) is inserted into the upper-layer module upright column (31).
5. The integrated steel structure hoistway of claim 1, which comprises: bottom module (3), standard module (4) and top module (5) correspond every layer of stairwell half space's position and have set firmly landing slab (8) in second well (12), landing slab (8) are connected fixedly with stand (31) and crossbeam (32) respectively, and are adjacent form between landing slab (8) and wait the terraced room.
6. The integrated steel structure hoistway of claim 5, which comprises: the top of the elevator waiting hall is provided with a decorative ceiling, the bottom of the elevator waiting hall is provided with a decorative floor, and the ceiling is provided with a ceiling lamp.
7. The integrated steel structure hoistway of claim 1, which comprises: the building roof is characterized in that an enclosure structure covers the bottom layer module (3), the standard module (4) and the top layer module (5), and a roof (51) is arranged at the upper end of the top plate module.
8. The utility model provides a take integrated steel construction well construction technology in terraced room of waiting, its characterized in that includes following step:
s1, prefabricating a foundation frame (2), a bottom layer module (3), a standard module (4), a top layer module (5) and a roof (51) in advance according to a design drawing, and respectively arranging a platform plate (8), a suspended ceiling, a ceiling lamp and an enclosure structure at corresponding positions on the bottom layer module (3), the standard module (4) and the top layer module (5);
s2, excavating a well pit, constructing a raft foundation, and positioning and pre-burying foundation bolts on the raft foundation;
s3, hoisting the foundation frame (2), wherein foundation bolts penetrate through corresponding bolt holes in the steel plate (23), and the foundation frame (2) is fixed on the raft foundation through bolt connection;
s4, carry out bottom module (3) hoist and mount, vertically transfer bottom module (3), make stand (31) and square column (21) dock, peg graft during sleeve pipe (7) inserts stand (31), utilize otic placode (6) and connecting plate to pass through the bolt with bottom module (3) and foundation frame (2) temporary fixation, repeat above-mentioned step, it is fixed to carry out the hoist and mount of standard module (4) and top layer module (5) in proper order, after whole hoist and mount is accomplished, carry out each adjacent module concatenation department welded fastening, demolish otic placode (6) and connecting plate at last.
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| CN201911231556.0A CN110924630A (en) | 2019-12-05 | 2019-12-05 | Integrated steel structure hoistway with waiting hall and construction process thereof |
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| CN109184150A (en) * | 2018-10-29 | 2019-01-11 | 张云天 | A kind of existing multi-storey building of cold district installs the prefabricated assembled hoistway of elevator and its construction method additional |
| CN208996395U (en) * | 2018-10-29 | 2019-06-18 | 张云天 | A kind of existing multi-storey building installation prefabricated assembled hoistway of elevator of cold district |
| CN209383223U (en) * | 2018-12-14 | 2019-09-13 | 重庆迈高电梯有限公司 | A kind of template type splicing elevator hoistway with steel structure |
| CN209702062U (en) * | 2019-03-25 | 2019-11-29 | 曾想来 | A kind of assembled elevator frame |
| CN211597546U (en) * | 2019-12-05 | 2020-09-29 | 北京亟光电梯科技有限公司 | Area is waited terraced room integration steel construction well |
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