预算公式（Budget formula）.docVIP

预算公式（Budget formula） First, the basic cushion material conversion method: 1, lime, sand, gravel, bricks, etc. single material quota amount of press type selection: Quota dosage: unit of measurement * compacting factor * (1+ loss rate) Compacting factor = Virtual thickness / compacted thickness 2, a variety of materials mixed cushion is mixed with the amount of semi-finished products into the quota, and its compaction coefficient in the proportion of fixed appendix has been considered. 3, gravel or rubble grouting mortar or sand cushion, the amount calculated by the formula: Mortar (sand) = * filling density * (1+ loss rate) * unit of measurement. Examples: the meter 2-116 1:1 case (section of sand gravel cushion mix ratio by volume calculation): (1) the porosity of the stone is * 100%=44.4%, and the compactness of the gap is 90%. (2) amount of crushed stone 40MM: 0.5 (measurement volume) * 1.04 (compacting factor) * 1.5 (bulk density) * 1.02 (loss) =0.8T (3) sand dosage: 0.5 (fixed metering volume) * 1.04 (compactness) * 1.46 (bulk density) x 1.05 (dense coefficient) / 1.18 (here should be considered in the dry sand moisture expansion rate of 18% =0.676T). Use sand filling gap: 0.5-0.5 * 0.56 (* 0.9 stones of dense volume) (1.46 x 1.04 x 1.18 x 1.05 / =0.28T) The total amount of sand: (0.676+0.28) * 1.02 (loss) =0.98T. Two, brick material conversion method: The theoretical formula for the amount of brick and mortar used in brick walls of different thickness per cubic meter is as follows: A= * K A: Brick theory consumption K: brick number of wall thickness * 2 (brick wall thickness refers to 0.5, 1, 1.5, 2, etc.) Net amount of mortar =1- brick wall * per brick volume Examples: a 3-29 meter brick wall section as an example Standard brick dosage: =529.10 block /M3 The projecting wall tile line, the buckle beam head, the pad block, the prefabricated plate first class increase 0.268%, namely 529.10 * (1+0.268%) =530.51 block /M3, another count loss: 530.51 * (1+1%) =536