COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 PROJECT ARCH STOLAC COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHES-DRYING HOUSE, STOLAC PROJECT OF REHABILITATION AND CURRENT MAINTENANCE Sarajevo, April 2012 INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 1 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 PROJECT ARCH PLUS STOLAC COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHES-DRYING HOUSE, STOLAC PROJECT OF WORKS ON REHABILITATION AND CURRENT MAINTENANCE DIRECTRESS: LIDIJA MIĆIĆ, B.Sc.Arch. PREPARED BY: AZER ALIČIĆ, B.Sc.Arch. AZRA HADŽIĆ, B.Sc.Arch. Sarajevo, April 2012 INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 2 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 Contents 1. General documents 2. Textual part Technical description with the supporting technical and photo documentation General and specific requirements for performing of works Bill of quantities INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 3 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 TECHNICAL DESCRIPTION WITH THE SUPPORTING GRAPHIC AND PHOTO-DOCUMENTATION Introduction INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 4 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 The main objective of drafting of the project documentation for rehabilitation and current maintenance of 5 (five) mills on the river Bregava in Stolac is preservation and promotion of cultural and historical heritage of Bosnia and Herzegovina, that is, of the legacy as a bridge between communities, where the works on rehabilitation of construction legacy in Stolac aim primarily at reconstruction and development of the community devastated by war, with special emphasize on the possibility to include the mills on the river Bregava into the process of sustainable economic development in Stolac. 2. Project aim This project was designed with aim to improve social and economic situation of Stolac and its inhabitants through the possibility of economic development through reconstruction of cultural heritage. Furthermore, one of the project objectives is to raise the awareness on the value of cultural heritage for sustainable social development. For this purpose, it is necessary to develop a construction design of rehabilitation and current maintenance for the Complex of Mills Tucaković & Leto with a Stamping Mill and a Clothes-Drying House on the belonging cadastre lot 1308/1 and cadastre lot 1308/1 in Stolac on the river Bregava in order to rehabilitate damages on the physical structure, to enable the mills for the new purpose adapted to cultural and historical significance of the building and to incorporate it into an economically sustainable process of development of the Municipality Stolac; to provide for an area for activities related to handicraft, industry, art - primarily for cultural tourism. It should be emphasized that preservation of physical structure of the building will also preserve the typological examples of handicraft and industrial buildings, which have centuries-long continuity. 3. Location The complex was built on the river Bregava that is on an artificially constructed branch. It consists of two mills, a stamping mill and a clothes-drying house. The mill Leto is the central building of the complex and has bigger overall dimensions. The architecture of the buildings is simple, completely subordinated to the industrial function of the buildings. In the war period, the complex suffered damages, so that due to the condition of preservation, and due to the possibility to incorporate these buildings into sustainable economic development of Stolac, it is the subject of the Project Documentation for rehabilitation and technical maintenance works. 4. Technical description 4.1. Architectural composition The complex of mills consists of two mills– Leto and Tucaković, and a stamping mill and a clothes-drying house. In spatial terms, this complex is divided in east – west direction from one bank to the other, connected with a bridge and walkways. It is especially important to emphasize that these two mills are INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 5 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 supplied with water from two separate branches. The building of the mill Leto has elongated, almost regular rectangular foundations, with the western wall very mildly inclined in relation to the north by 2⁰. External overall dimensions are 5.27x12.05m. The entrance into the building, which was built as a unique room in interior, was constructed on the eastern facade, and it is approached by stairs. Along the internal face of the north wall, there are three water mills, which were quite damaged due to damages and exposure to atmospheric influences. They were mutually separated by wooden constructions – frames, which at the same time were a part of the constructional and functional unity of the water mills. The miller's room is organised on the west end of the mill with stairs for accessing the bed. Along the southern facade of the building, a terrace was built in concrete. On the internal side of the southern wall, a shallow niche was constructed, and two windows were made on the western wall. On the northwest of the mill, there is an area where two stamping mills were located. The clothes-drying house. A smaller building located on the western edge of the complex, with regular rectangular foundation, and overall dimensions 3.10x6.80, spreading in direction north-east – southwest. The entrance into the building was constructed on the eastern facade which also contains two windows. Tucakovića mill. The most southern building in the complex, with a simple disposition and almost regular rectangular foundation, where the north wall shows a certain level of constructional and formational deviation. The external overall dimensions of the building are 5.34 (5.56)x14.59m. The entrance and the window openings are on the south wall of the building. The mill wheels are moved by water from the artificial branch, brought in through gutters (under angle of 15⁰), and the gutters are equipped with lids which close when the operation of the mill is interrupted (water supply to the mill is stopped). They are moved by wooden keels located in the underwater part (closet), containing a wheel with scoops moved by impact power of water and rotations of the wheel are transferred by an axis (going through the mill's floor) to the round mill stone above which there is a wooden case (granary or basket) containing grain to be milled. Grain falls through its lower part, and falling of grain is regulated by a rattle. Grain falls onto the lower stone, and its distance from the upper stone is regulated by a lever, whereby the fineness of flour falling into the wooden case is achieved. These machines for milling of grain have not suffered bigger changes for last 300 years, since the first description of the mill. Lately, the only novelty is the use of roll bearings and iron wheel. In the interior of the mills, the mill wheels and wooden cases still may be found. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 6 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE KOMPLEKS MLINICA (Vodenica) na Bregavi u STOCU ( Tucakovic, Leto, Buzaljko ) 2012 OSNOVA MLINICA na koti 0`00 TUCAKOVICA MLINICA P = 79,50 m2 LETO MLINICA SA STAJOM P = 117,35 m2 KUCICA ZA SUSENJE VESA P = 19,85 m2 S ARHITEKTONSKI SNIMAK POSTOJECEG STANJA APRIL 2004. GODINE KANAL BREGAVE KAMENI ZID BETONSKI ZID +27.00 310 SOBA ZA SUSENJE VESA +140.00 +129.00 76 MJESTO DVIJU STUPA 674 95 KANAL BREGAVE 66 680 177 +240.00 47 3 ULICA PREMA BEGOVINI 1205 +- 0.00 298 4 Mlinica 65 396 61 21 40 18 92 841 173 384 20 262 3 934 100 NABIJENA ZEMLJA -20.00 Staja POPLAVLJENI POD -20.00 156 50 44 50 402 301 314 NABIJENA ZEMLJA 300 21 NABIJENA ZEMLJA +- 0.00 314 KANAL BREGAVE 372 504 411 102 DRVENI POD 322 4 62 527 59 131 54 322 55 158 +- 0.00 390 20 370 20 1285 60 20 20 2 13 193 461 300 463 235 272 235 50 556 NABIJENA ZEMLJA 534 POPLAVLJENI KANAL BREGAVE 3 1 +- 0.00 156 69 223 15 168 81 120 69 213 117 1 228 KANAL BREGAVE 2 1459 Picture above: Ground plan of the complex of mills in Stolac (taken from the documentation on the existing situation of the Commission to Preserve National Monuments of BiH) 4.2.Construction Walls. The buildings were built by hewn blocks of limestone, while the angles on the position of connecting of walls, as well as the window and door openings, were technically and aesthetically highquality built from regularly carved stone blocks. The walls were built in lime mortar. Roof. Gable roofs, wooden roof construction, system of simple bevel strut caught in the ridge with required wooden fliers. Roof covering is stone pane, which on the building of Leto mill was in a greater part replaced by roofing tile as a temporary protection from precipitation leaking into the building; there is no roof on the building of Tucakovića mill, and the most preserved is the one on the building of the clothes-drying house. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 7 2012 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE PRESJEK 4 - 4 11 162 22 113 44 72 KOSA STOLICA GREDE 13 X 15 cm +103,00 NABIJENA ZEMLJA KAMENI SVOD-cemer 187 86 83,00 +13,00 0,00 118 132 203 26 +75,00 +81,00 17 +1,00 +369,00 +196,00 GREDE 12 X 16 cm KOSA STOLICA DRVENI POD KAMENI SVOD-cemer ROGOVI d = 10 cm 71 86 +112,00 497 +161,00 SLJEMENA GREDA 12 X 14 cm +369,00 371 11 125 GREDE 12 X 10 cm 197 10 +369,00 181 ROGOVI d = 10 cm 2012 -128,00 58 1097 59 1214 300 50 300 50 Picture above: Cross cut through Leto mill (taken from the documentation of the existing situation of the Commission to Preserve National Monuments of BiH) +317.00 +315.00 +170.00 +170.00 315 +155.00 127 393 +127.00 54 292 174 92 20 20 115 140 -78.00 92 2012 227 128 25 +-0.00 25 45 25 +-0.00 50 998 65 1459 PRESJEK 1 - 1 Picture above: Cross cut trough the Tucakovića mill (taken from the documentation of the existing situation of the Commission to Preserve National Monuments of BiH) Floors. In both mills, the floor was made from compacted soil, while in the Leto mill – in the miller's room the floor was made from planks. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 8 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 4.3.Fasade Photo above: View on the south facade of the Tucakovića mill Photo above: View on the south facade of the Leto mill and stable Facades of the buildings are completely simple, deprived of the presence of details of architectural plastic, so it may be said that spacedesign expression of the building is subordinated to its primarily economic function. Facades are stone wall panels, opened with six windows on the south longitudinal wall and one window opening on the north wall. Gable roof, with mild inclination specific for covering with stone roof panel, follows the simplicity of geometry of the entire building. Decorative elements of architectural plastic are not present. , lišene prisustva detalja arhitektonske plastike, pa se može reći da je likovno-oblikovni izraz objekta podređen njegovoj primarno privrednoj funkciji. Fasade suLeft kamena platna, otvorena photo:zidna built on concrete sapartšest prozora na južnom along the south facade of podužnom zidu i jedan prozorski the Leto mill. otvor na sjevernom zidu. Krov dvovodni, blagog nagiba specifičnog za pokrivanje krovnom kamenom pločom, slijedi jednostavnost geometrije čitavog objekta. Nema prisustva dekorativnih elemenata arhitektonske plastike. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 9 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 5. Situation found in 2012 This complex of mills is heavily damaged, out of function and overgrown. The remains of walls are made of local stone in lime mortar with free connection in building. The roof construction was destroyed and burnt. On the entrance part of the mill, there are visible attempts of an unsuccessful partial reconstruction. The water mills were completely destroyed and exposed to negative atmospheric influences. The access channels were not cleaned, while the exit channel from the mill was buried with rubble from ruined walls of the mill in height up to 1 m. Left photo: View on the west part of the Tucakovića mill Right photo: View on the clothes-druying house Above photos: View on the complex from the street going towards Begovina INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 10 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 6. Detailed description of the intervention level: Type and quality of construction materials and technologies of performing of rehabilitation works Since this is about a specific type of works, the construction materials – as well as the technology of works, have to be completely harmonised with cultural and historical value of the building, existing materialization, geometry of structures, space-design characteristics and construction technology of old Herzegovinian builders. 7.1. Preparatory works Within the preparatory works, it is necessary to perform closing of the barrage, stop the water supplying into the branch and suspend the water supply into gutters by closing of lids on gutters in order to stop the operation of mills. After that, when the bed is dry, detailed cleaning from vegetation, rubble and settled layers of soil and sludge in the branch of Bregava is performed, with supervision. Cleaning is performed manually, without use of chemical substances. This item includes cleaning of side walls of the part of intake branch, underwater parts of the mill (intake channels, underwater cellar of the mill and gravitating part down the river from the cellar), as well as removal of vegetation from the walls of the building according to the conservator's instructions, and cleaning of rubble from the building. Cleaning is made with continual supervision. Also, it is necessary to perform careful dismantling of all subsequently built in concrete and other inappropriate elements and materials. Load the rubble onto a truck and take it to the landfill. In the interior of the main building of the mill, rotten plank floor over the access to the bed should be carefully dismantled. Load the dismantled material onto a truck and take it to the landfill. Since the building of the mill has suffered damages of the built structures, it is necessary to dismantle carefully moved stone blocks from the wall structures above the height of the mill's floor (stone blocks that are not stable and have lost the constructive connection with healthy parts of walls). Stone should be marked, cleaned, stored in a dry protected place and prepared for re-building. Stone that has lost its constructability should be separated and saved for possible use as aggregate for making of stone mortar for building or filling of walls. Wash all fugues from remains of disintegrated mortar, soil and rubble with water under pressure from a VAP (high-pressure water cleaner). Pressure in VAP shall not exceed 3 Bars, as preparation for tuck-pointing of walls; perform the tuck-pointing with hydraulic lime mortar with basis of river small-grain fraction (zero). After dismantling, clean the remaining part of surfaces of interior faces of walls from the layer of lime water. Due to a long-term exposure to negative atmospheric influences, all wooden elements of construction on the auxiliary building should be dismantled (bearing pillar with saddle, bearing beams, mezzanine beams, floor planks, entire wooden bondruk system with bearing beams and filling, ceiling beams, wooden roof construction; among dismantled elements, those elements are separated which, from the aspect of condition of preservation and constructability may be used for re-building (before dismantling, all elements are marked, and healthy ones are separated and stored in a previously prepared dry place); INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 11 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 the rest with rubble is taken to the landfill; conservatory cleaning of stone elements of auxiliary building and preparation for tuck-pointing. A bigger part of joinery on the buildings is damaged, so that it is necessary to carefully dismantle all doors (internal and external) and windows on the building of the mill; wooden jambs will not be dismantled (unless heavier damages are observed). The building of the mill was originally covered with stone tile, of which one part was saved on the building, while one part of the building was re-covered by roofing tile for preventive reasons. It is necessary to perform careful dismantling of the roofing of the mill made of roofing tile and stone tiles with taking down from the building; dismantled material should be loaded on a truck and taken to the landfill; In the interior of the mill's building, there were recorded roof construction elements that are the result of subsequent interventions, and due to this – as well as for constructive reasons – a part of the wooden roof construction on the building of the mill built in by subsequent interventions and with inadequate materials should be dismantled. All original elements of the roof construction shall be kept (dismantling shall be performed under strict supervision of the project manager); dismantled material should be loaded on a truck and taken to the landfill. As one of the objectives of this Project is inclusion of the buildings of the mills into sustainable economic development of Stolac, the intention is to apply the principle of active protection in this complex and to enable it constructively and functionally for new purposes appropriate both for the building and for the possibility to do business. Upon completion of preparatory works, performing of rehabilitation works is started chronologically. 7.2. Building works For the purposes of rehabilitation of damages to the wall structures of stone walls, new stone should be prepared following the example of the existing one. Building is performed with 50% of new limestone. New stone that is used for building of the missing parts of walls shall be from the quarry from which the stone for building of the mills with auxiliary buildings was exploited or from the pit from which the stone for performing of precious conservatory and restoration works on the buildings was taken. If those pits are no more in use, then the stone used must correspond petrographically and in its physical and mechanical characteristics to the existing stone in the preserved wall structures. The size, method of processing, geometry, and in particular stone binding must correspond to the one preserved in the surrounding wall surface. The structure of the newly built wall must correspond to the original one. Partitioning of wall surfaces on which the stone blocks have moved is made with stone that was previously carefully dismantled, cleaned, stored and prepared for re-building. Before partitioning, the wall should be cleaned up to the healthy surface. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 12 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 For the purposes of rehabilitation works on stone walls above the level of contact with water, use the lime mortar 1:3. Use naturally slaked lime older than three months and small-grain, clean and dry river sand. For the purposes of enhancement of mortar, if necessary, use white cement in maximum quantity of up to 10%. Use the enhanced lime mortar on the places of wall crowns and specific constructive clashes of two walls. Tuck-pointing of wall surfaces from which the remains of disintegrated mortar and rubble were cleaned or from which mortar was washed out, is performed in the following way: fugues are well cleaned from disintegrated material up to healthy wall surface. After cleaning, fugues are washed and pointed with lime mortar 1:3 for the above-water part of the building, while in the part of built structures of stone that are underwater, tuck-pointing is performed with hydraulic mortar, which at the same time must have the property of resistance to washing and intense water flow. 7.3. Carpentry installation works Rehabilitation of damaged roof constructions on the mill will be performed so that the cornices and purlins will be replaced by softwood core manually hewn to required measure and rafters from softwood round logs from which bark and all visible damages of maximum diameter 12cm were removed. Frontal parts of rafters on eaves will be left visible. Wood for timber shall be dried naturally, with maximum humidity coefficient of up to 12%. Gable roof, wooden roof construction, simple bevel strut system caught in the ridge with required fliers made from the same wood. For the purpose of covering of the roof with stone tiles, latticing is made with wooden laths with space between of up to 30cm and of dimensions 5x8cm. Rafters are posted on the axis space of up to 45cm. All lintels and jambs are kept and protected with a coating against rotting and fungi on the basis of water and environment-friendly characteristics. Any possible changes will be made on site with approval of the designer and supervisory body. 7.4. Roofing works Roofs are covered with manually split stone tile, with thickness of 2-4cm and minimal surface of 60cm2. Roof is covered with panel which is lubricated with lime mortar where it is required. The surface of required panel is calculated as 1,5xactual roof surface. All sleeves through the roof and couplings are made with 1,5mm thick lead sheet with standard sheet-metal binding. Quality of stone for making of roof panels must be without fibres, admixture of soil or any other material, of equable thickness and colour, arranged in the manner to correspond to the roof geometry. Arranging of panel on the mill must provide for natural ventilation of covered area, so that technological process would not endanger health of users and visitors of the mill. The Contractor shall consult the present owner of the mill. 7.5. Joinery works INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 13 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 Within joinery works, it is necessary to manufacture and install new windows and doors (internal and external) on the building of the mill and auxiliary buildings. Dimensions of joinery will be defined by the existing building openings on site. For making of joinery, use wood of I class white pine with humidity between 8 -12%. One-layered (drawn) glass 4mm thick in strips will be used for vitrification. Fittings of windows and doors made of forged burnished iron according to the existing or, if there are no existing, according to the description and outlook defined by the project. Obligatorily install internal and external sills on the windows. Provide for a safety lock on the external door. Final processing of joinery with triple coating of a solution of flax oil and oil diluent in proportion 1:1 and toned according to the designer's instruction. In making of joinery, the contractor shall observe all requirements defined in general and special requirements on building. Note: All joinery shall be installed in dry-mounting manner. If necessary, use wedges made from forged burnished iron. External entry door into the mill are made of 4cm thick black pine plank linked to feather and mortise. The stone threshold made of one piece of local limestone, processed by fine bush hammering. Door frames in touch with stone walls and lime mortar shall be protected by underlying of cardboard on all contact surfaces to avoid absorption of moisture. External door shall be especially processed from the outside with protection against atmospheric influences, woodworm and fungi. Protection is made with hydrophobic substances based on water, colourless and acceptable from the aspect of ecology and protection of human health. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 14 COMPLEX OF MILLS TUCAKOVIĆ & LETO WITH A STAMPING MILL AND A CLOTHESDRYING HOUSE: PROJECT OF REHABILITATION AND CURRENT MAINTENANCE 2012 Internal door shall be made from I class white pine timber 2.4cm thick, with fittings from forged iron and dry-mounted. Protection is made with triple coating of a solution of flax oil and oil diluent 1:1, and toning will be made according to the designer's instruction. The existing thresholds will be made of limestone of local origin, finely bush hammered. INSTITUTE FOR PROTECTION OF MONUMENTS OF THE FEDERAL MINISTRY OF CULTURE AND SPORTS SARAJEVO Page 15