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【正文】 袋及薄膜 3）養(yǎng)護(hù)時(shí)間不能少于 7 天 工藝質(zhì)量及計(jì)量 主控項(xiàng)目 ①鋼筋進(jìn)場時(shí)，應(yīng)按現(xiàn)行國家標(biāo)準(zhǔn)的規(guī)定進(jìn) 行抽驗(yàn)，質(zhì)量要符合要求。 ③受力鋼筋的品種、級別、規(guī)格和數(shù)量要滿足設(shè)計(jì)的要求。 主控項(xiàng)目 ①模板安裝應(yīng)參照作業(yè) 指導(dǎo)書執(zhí)行。 主控項(xiàng)目 ①各種原材料的抽驗(yàn)應(yīng)滿足現(xiàn)行規(guī)范的要求。 質(zhì)量通病的防治 序號 項(xiàng) 目 防 治 措 施 1 柱底爛 根 模板安裝前，應(yīng)將模板內(nèi)垃圾清理干凈。 4 砼面凸 凹不平 加強(qiáng)模板的保護(hù)和維修 ,每次澆筑混凝土前將模板檢修一次 .板面有缺陷時(shí) ,應(yīng)隨時(shí)進(jìn)行修理 .不得用大錘或振搗器猛振模板 ,撬棍擊打模板。 板砼施工前應(yīng)了解近日 2— 3 天天氣預(yù)報(bào)情況，盡可能避開大雨。 disdain for this taxation without representation (socalled because the colonies had no voice in the establishment of the taxes) gave rise to revolts such as the Boston Tea Party. However, even after the Revolutionary War and the adoption of the . Constitution, the main source of revenue for the newly created states was money received from customs and excise taxes on items such as carriages, sugar, whiskey, and snuff. Ine tax first appeared in the United States in 1862, during the Civil War. At that time only about one percent of the population was required to pay the tax. A flatrate ine tax was imposed in 1867. The ine tax was repealed in its entirety in 1872. Ine tax was a rallying point for the Populist party in 1892, and had enough support two years later that Congress passed the Ine Tax Act of 1894. The tax at that time was two percent on individual ines in excess of $4,000, which meant that it reached only the wealthiest members of the population. The Supreme Court struck down the tax, holding that it violated the constitutional requirement that direct taxes be apportioned among the states by population (pollock v. farmers39。s new deal, imposed a five percent excise tax on dividend receipts, imposed a capital stock tax and an excess profits tax, and suspended all deductions for losses (June 16, 1933, ch. 90, 48 Stat. 195). The repeal in 1933 of the eighteenth amendment, which had prohibited the manufacture and sale of alcohol, brought in an estimated $90 million in new liquor taxes in 1934. The social security act of 1935 provided for a wage tax, half to be paid by the employee and half by the employer, to establish a federal retirement fund (Old Age Pension Act, Aug. 14, 1935, ch. 531, 49 Stat. 620). The Wealth Tax Act, also known as the Revenue Act of 1935, increased the maximum tax rate to 79 percent, the Revenue Acts of 1940 and 1941 increased it to 81 percent, the Revenue Act of 1942 raised it to 88 percent, and the Individual Ine Tax Act of 1944 raised the individual maximum rate to 94 percent. The postWorld War II Revenue Act of 1945 reduced the individual maximum tax from 94 percent to 91 percent. The Revenue Act of 1950, during the korean war, reduced it to percent, but it was raised the next year to 92 percent (Revenue Act of 1950, Sept. 23, 1950, ch. 994, Stat. 906). It remained at this level until 1964, when it was reduced to 70 percent. The Revenue Act of 1954 revised the Internal Revenue Code of 1939, making major changes that were beneficial to the taxpayer, including providing for child care deductions (later changed to credits), an increase in the charitable contribution limit, a tax credit against taxable retirement ine, employee deductions for business expenses, and liberalized depreciation deductions. From 1954 to 1962, the Internal Revenue Code was amended by 183 separate acts. In 1974 the employee retirement ine security act (ERISA) created protections for employees whose employers promised specified pensions or other retirement contributions (Pub. L. No. 93406, Sept. 2, 1974, 88 Stat. 829). ERISA required that to be tax deductible, the employer39
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