Guidelines - City of Oklahoma City

More documents

Recommendations

Info

Preservation Standards AND Guidelines August 1, 2012 3.1.17: Renovations previously undertaken may conceal original or historic building fabric. When altering a historic building, non-historic alterations in the area of the proposed alteration should be removed. 3.1.18: If original or historic materials do not remain, the original form may be reconstructed or restored based on physical, photographic, or documentary evidence. 3.1.19: Original masonry or stone surfaces must be maintained and not be painted, unless severe deterioration of the brick or stone can be shown to require painting and other consolidation or stabilization methods cannot be shown to be appropriate. 3.1.20: If masonry was previously painted, it is often not appropriate or possible to remove paint, and appropriate repainting must be considered. If color or texture of replacement brick or stone cannot be matched with existing material, as a last resort, painting may be an appropriate treatment. 3.1.21: Repair masonry by replacement or patching with in-kind or similar material. When this is not possible, new materials matching in texture, color and detail should be used. 3.1.22: New mortar used in re-pointing must match the color and composition of the original. Incompatible mortar, too high in Portland cement content, may exceed the strength of historic brick and result in acceleration of deterioration of brickwork. 3.1.23: Sandblasting, high pressure power washing, the use of blow torch methods and any abrasive cleaning or striping methods must never be used because of the resultant permanent damage. 3.1.24: Removal of existing synthetic materials is strongly encouraged to recover authentic historic finish and appearance of a building and its components. The application of vinyl siding does not allow for proper breathability of a frame dwelling and is not a sustainable material (left). After only two years, the applied polymer coating on this dwelling is already peeling (right) and the life expectancy of these materials is questionable. Oklahoma City Historic Districts 68
Preservation Standards AND Guidelines August 1, 2012 COMMISSION REVIEW: ACTIONS THAT REQUIRE REVIEW BY THE HPC 3.1.25: Historic architectural features and materials should be retained and preserved when adapting the building to contemporary use. 3.1.26: If replication of original elements is not possible because of a lack of historical, physical, photographic or documentary evidence; then a new design that is compatible with the original form, style, and period of the building shall be used. 3.1.27: An appropriate option for a replacement feature is a new design that is compatible with the remaining character-defining features of the historic building. 3.1.28: The new design of a missing feature shall take into account the size, scale, and materials of the historic building; should be clearly differentiated to avoid a false historical appearance; and should maintain visual attention on the authentic and historic aspects of the building. 3.1.29: New compatible designs for missing features should be reversible so that they can be replaced with a more appropriate design in the event that better and more accurate historical evidence becomes available. 3.1.30: Synthetic siding materials such as vinyl and aluminum bear little resemblance to historic siding materials and are not sustainable. The application of such materials is not appropriate and will not be approved in historic districts. 3.1.31: Exterior insulation finish systems, curtainwall, concrete block, imitative brick or stone or gravel aggregate materials shall not be used as replacement exterior wall materials. 3.1.32: The removal of metal or vinyl siding may allow the recovery of original decorative elements such as cornices, brackets, and window and door trim that have been damaged or removed when the synthetic materials were installed. Recovery of such details should be based on physical or photographic evidence first, and based on similar details for buildings in the block or district second. 3.1.33: Installation of fiber cement products may be appropriate for back or side elevations not readily visible from the public right-of-way in order to replace wood siding that is missing or deteriorated beyond repair in all districts except the Heritage Hills Historic and Architectural District. If determined appropriate, then the fiber cement siding shall be consistent with the size, pattern, shape, dimensions and texture of the original wood siding. Fiber cement products are considered sustainable products. 3.1.34: The use of composite wood siding is discouraged since these products do not appropriately imitate the appearance of wood siding, and toxins are used in their manufacturing. 3.1.35: Products of polymer coatings (―liquid siding‖) should be avoided since the life expectancy and breathability of these coatings is unknown. The application of these coatings often requires abrasive cleaning of the original surface, which is not allowed. Oklahoma City Historic Districts 69
Page 1 and 2:
OKLAHOMA CITY HISTORIC PRESERVATION
Page 3 and 4:
Oklahoma City Historic Preservation
Page 5 and 6:
Preservation Standards AND Guidelin
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18: Preservation Standards AND Guidelin
Page 67: Preservation Standards AND Guidelin
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
show all

Guidelines - City of Oklahoma City

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?