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To excel in cost estimation, start by learning the fundamentals! To improve skills in reading drawings, before calculating the quantity of work, one should first go through the entire set of drawings from start to finish; once a general understanding of the design intent is obtained, then focus on examining those parts in detail. When examining the drawings, it is important to clarify the following issues: (1) Regarding the architectural drawings, 1) understand the number of floors and height of the building (including floor height and total height), the height difference between the interior and exterior, the structural type, the total longitudinal length, and the span. 2. Understand the materials and construction methods used in the project, including those for floor and ceiling surfaces, roofs, doors and windows, as well as wall and column decorations. 3. Determine whether there are any variations in the wall thicknesses, floor and ceiling finishes, doors and windows, ceilings, etc., across different floors (including changes in materials, dimensions, quantities, etc.), so as to apply appropriate calculation methods. (II) Structural diagram section: 1. Understand the basic form, depth, soil type, excavation method (determined according to the construction plan), as well as the materials and construction methods for the foundation and walls. 2. Understand the aspects related to quantity calculation as outlined in the structural design specifications, including the types and strength grades of masonry mortar, the concrete strength grades for cast-in-place and precast components, as well as the rules regarding the anchoring and lapping of rebar. This helps to fully comprehend the design intent behind the drawings and prevents errors such as double-counting or missing calculations. 3. Understand the plan layout of the components and the location of the references in the joint diagrams, so as to avoid wasting time by frantically searching through the drawings during calculations. 4. For brick-concrete structures, it is necessary to determine how many different cross-sectional heights the ring beams have, where exactly they are located within the walls, how their cross-sections change at balconies and door/window openings, and whether the widths of the ring beams on the inner and outer walls are the same. This information is needed in order to calculate the volume of the ring beams by performing calculations separately for each different width. 5. For buildings with overhanging eaves, balconies, or canopies, it is necessary to understand the connection between the overhanging elements and the intersecting beam or ring beams, so as to have a clear understanding when performing calculations. At present, the preparation of construction drawing budgets and quantity lists is mainly carried out in connection with project bidding. After the project is put out for bid, it is customary for the project owner to organize relevant parties to review the drawings within three days. Therefore, those responsible for preparing the budget (or list) should make use of this time to examine the drawings carefully and record any issues found in them. When looking at the diagram, do not rush to make calculations; this will prevent unnecessary adjustments due to changes that occur after blind calculations. However, the specifications, models, quantities, and dimensions of the components and rebar listed in the \"Door and Window Schedule,\" \"Component Index Table,\" and \"Rebar Details Table\" need to be reviewed. After the drawings are finalized, the drawings shall be thoroughly revised based on the \"Minutes of Drawing Finalization,\" and only then shall calculations be carried out. Beginners who have not been working on estimates and budgets for long but wish to improve their skills in reading drawings should, when necessary, visit the construction site in stages as the project progresses, comparing the drawings with the actual structures of each component of the project. This approach helps to deepen their understanding of the drawings and expand their spatial thinking, thereby enabling them to improve their drawing-reading skills more quickly. Basic Skill 2: Familiarity with the preparation of common standard drawings. The standard drawing collections commonly used in engineering are mainly those for civil buildings and structures compiled by various provinces; among national standard collections, 04G329-3 \"Detailed Specifications for Seismic Design of Buildings\" is the most frequently used. In practical work, if common nodes and construction methods found in certain standard drawings are used frequently, it is important to keep a record of them. This includes the names of the elements represented by the codes for doors and windows in those standard drawings, as well as the dimensions and load capacities indicated by the codes for precast beams and prestressed hollow slabs. It also involves knowing the details and construction methods related to cement mortar floors, terrazzo floors, slab floors, and baseboards in floor construction. Additionally, one should be aware of the mix ratios and thicknesses of the mortar used for general plastering on walls and columns, as well as the common practices for roof insulation and membrane waterproofing. Information on the construction methods for wall tie bars, as well as the details of ring beams and structural columns, is also useful. By memorizing these common construction methods and their corresponding codes, one can proceed with calculations directly without having to refer to the standard drawings whenever encountering the same nodes and codes in other projects. There are many nodes and construction methods shown in the standard diagrams; it is impossible and unnecessary to remember them all. However, to save calculation time, it is essential to keep in mind some of the most commonly used nodes and construction methods in order to speed up the calculation of quantities. Basic Skill 3: Familiarity with the rules for calculating quantities. Calculating quantities involves using \"rules for calculation\" as a framework; different rules result in varying ways of classifying items, units of measurement, the scope of work included, and the calculation procedures. To calculate the quantity of work, different rules for calculating such quantities must be applied depending on the various pricing methods. When preparing a construction drawing budget, the quantities should be calculated in accordance with the rules specified in the budget quota; when preparing a bill of quantities, the quantities should be calculated using the rules given in the appendix to the Pricing Specifications; for pricing based on a bill of quantities, the quantities should be calculated according to the rules set out in the consumption quota. “The \"consumption quota\" is derived from the amounts of labor, materials, and machinery specified in the \"budget quota\"; therefore, the classification of items and the rules for calculating quantities are basically the same for both (hereafter referred to simply as \"quotas\"). However, they differ from the rules for calculating quantities outlined in the appendix to the \"Pricing Specifications\", with the following differences: 1. The way items are structured differs – items in the quotas are usually arranged according to construction procedures, and each item typically covers a single type of work. In contrast, the items in the quantity list are generally considered as \"comprehensive entities\", with each item encompassing multiple types of work. 2. Different classification of project characteristics: The classification of items in different quotas takes into account only simple characteristics, while the classification of items in a bill of quantities is more detailed. Generally speaking, as many different characteristics exist within a particular sub-project, that many items should be created for it. 3. The units of measurement for some components are different. To calculate the quantities involved in a project, it is necessary to be familiar with the rules for calculating such quantities as well as the way in which tasks are categorized. It is important to distinguish clearly between the rules for calculating quantities outlined in the appendices of the Pricing Specifications and those in the quota systems, as well as the differences in the way tasks are classified in each system. One must also be aware of the regulations regarding the calculation of quantities for various components of a project, the units of measurement used, the scope of calculation, the elements that are included, and what should be excluded from the calculations. To avoid wasting time by frequently consulting the \"calculation rules\" when calculating the quantities.