【正文】 or pression element ? 20% Wooden structure of ancient constructions Specification for maintenance and reinforcement of ancient constructions GB 5016592 Inspection and evaluation of entirety of wooden structure of ancient constructions shall be carried out in accordance with table Inspection and appraisal for entirety of wooden structure truss Table Item No. Inspection item Inspection content Limit of appraisal for damaged points Elevated beam form Throughthehopper form 1 Entirely inclined (1) Inclining amount along structure mechanism plane ?1 ?1H0/120 or ?1120mm ?1H0/100 or ?1150mm (2) Inclining amount along vertical structure mechanism plane ?2 ?2H0/240 or ?260mm ?2H0/200 or ?275mm 2 Local inclining Relative bit shift between column head and column foot ? ?H/90 ?H/75 3 Linkage between structure mechanisms Present circumstance of vertical bracing bar and its linking rod Damaged or connection loosened 4 Linkage between beam and column(including that between plinth and timber and column and purlin) Circumstances of pulling connection and joggling connection No pulling connection, the rabbet drawn out off the mortise with a length longer than the rabbet 2/5 1/2 5 Perfection of rabbet and mortise Material Rotted, motheaten Other damages Already cracked Horizontal veining pressed with deformation Compress amount beyond 4 mm Note: In the table, H0 represents total height of wood structure mechanism。 remedy shall be done in case information is not sufficient. Survey how the existing circumstance of the construction meets the initial information and the situation of construction property and maintenance, to reveal concerned defects on nonresistance of earthquake. According to factors such as specialty, structure arrangement, framework and earthquakeresistance load bearing capability of various constructions structures, corresponding — 7 — appraisal method shall be adopted to make analysis of prehensive earthquake resistance capability. Evaluation of entire capability of earthquake resistance of existing construction shall be made. To those that do not meet requirement in appraisal, a treatment plan on earthquake resistance and hazardreducing shall be provided. The basic content and requirement for macrocontrol and structure appraisal for existing construction shall meet the following rules: When the horizontal and vertical surface, quality, rigidity distribution and sideload bearing elements such element brick wall of the construction are significantly not symmetric in the arranged plane, an analysis of hazard factor of earthquake torque effect shall be carried out. When there is discontinuity between upper and lower parts of the element or a mutation of rigidity distribution along the height exist, it is necessary to find out the weak location, which is then to be appraised in accordance with corresponding requirement. When the structure system is being inspected, it is necessary to find out the ponent or element, whose failure may lead to the whole system lost earthquake resistance capability or lost load bearing capability. When there is a house whose floor planes of the same story are at different elevations, or different types of structure systems are to be connected, requirement for earthquake resistance capability of the corresponding location shall be higher. For those elements of degree 6, checking putation for earthquake resistance is not necessary. For those of 8 to 9 degree, if the site of construction is located at a poor location such as an extruding hill mouth, high and isolated hill, nonrocky steep slope, river bank or edge of a side slope, evaluation shall be performed on the stability in earthquake, earth foundation slipping tendency, and possible danger of the construction. For category B constructions located at river bank or sea shore, when liquefied layer inclines towards river center or sea shore, an identifying judgement for danger of soil slipping or cracking after liquidation. When checking putation for load bearing capability of existing natural earth foundation is performed, a designing value of static load bearing capability of a long period pressedtodense base earth shall be used instead of design value of static earth load bearing capability. The former is resulted from the latter multiplied by the coefficient of long period pressingdense earth soil. House of building block Standard for appraisal for construction GB 5002395 The structure system of existing house shall meet the following rules: — 8 — Arrangement of horizontal and vertical walls is suitable as to meet the following regular requirements: (1) Mass and rigidity distribution along height paratively uniformly and evenly, variety of vertical height no more than one story, floor elevation in one story being not more than 500mm。 When hollow bricks is used with reinforced concrete, the concrete column shall get through the floor plates from lower to upper stories and ф 4mm steel bars pieces shall be pointwelded to connect the wall body at every meters height. Fishbone shaped roof framework without lower chord member shall not be used. For separated rooms there shall have a vertical support or wood sheathing and wood keel roof. If it is not the case, measures for reinforcement and other corresponding methods shall be adopted. Arrangement and structure of ring beam shall meet the following requirement: (1) For houses of which concrete is poured at site or entirely assembled with reinforced concrete, ring beam may not be used. (2) Arrangement of ring beam and reinforcing bars of assembled concrete house and roof (or wood roof) with concrete shall not be lower than that specified in table 。 (5) ring beam