1. ????+??+5??X????+??+3??X2X1.55X????/10000=?????
????+3??X????+3??X1.55X????/10000=???????
????=?????????????
2. ????+??+0.08??×????+??+0.05??×2×????
????≈2.8?/?O ???≈3.4?/?O ???≈4.2?/?O
?????????30×20?M/?? 0.1-0.12?/??
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????????????£????:?????????/??????????????????????/о??????????????/??????????????
????????????300??/????180???A/B??/о?180??????/???280??????
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????????=???????????????????/m2??×???????????m2??
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1?????????????
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2).???????????????????????????????????????????????????????о?????????????????”??/m2”??????λ????????????????????λ??????????“??/ m2” ?????“kg/m2” ??
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3)???????????????????????????
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1?????????????
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??????5200?/????????????5200?/1000kg=5.20?/kg.
2).???????????????????????????????????????????????????????о?????????????????”??/m2”??????λ????????????????????λ??????????“??/ m2” ?????“kg/m2” ??
?繺??300????????????300g/m2????????????“300??/m2”?????(300/1000)kg/m2”?????0.3kg/m2 ??
3)???????????????????????????
???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
A????????????1.59????1.59???????????????1?????
B????????????1.36????1.36???????????????1?????
C????????????1.50????1.50???????????????1?????
E????????????1.27????1.27???????????????1?????
3???????????????????????????
??1?? ??1?? ??????????о?????
????????4800?/????????350??/m2??????????????
??4800/1000??×??350/1000??
=4.8×0.35
=1.68???/??????
??2?? ??2?? ?????????
????????1800?/????????180??/m2???????????????
??1800/1000??×??180/1000??×1.59
=1.8×0.18×1.59
=0.516???/??????
4??????????????????????????
???п???????????????????????????????300??/????180???A/B??/???180????/???280?????????????????????????????
?б????
??? ???? ????(?/??) ???? ??? ????????/???????
??????? 300 5200 1 1 ??300/1000??×??5200/1000??×1×1=1.56
?????? 180 2250 2(1.56+1.39) (180/1000)×??2250/1000??×2×2.95=2.39
о? 180 1700 1 1 ??180/1000??×??1700/1000??×1×1=0.306
??????? 280 2500 1 1 ??280/1000??×??2500/1000??×1×1=0.70
???(?/??????) =4.96
5. ????????????????????????????
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6. ?????????????
???????????=?????????????????/0.65
??駡?4. ???????????????????????????????????????????????????
???????????=4.96/0.65=7.63?/?????
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1?? 1????????????????????????????????????????????????????
2??????????????
?????????????????????????????????????????960mm??1100mm??1600mm??1940mm???????????????????????????豸????????2.2m??????1.6m???????????????£?
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??1????????????????£?
??????1.6÷??0.24??0.31??0.06????2
1.6÷2??0.8
?????????0.5??0.31??0.06??×2??0.04??1.78m2
??????????1.78×0.8=1.42 m2
??2??????????????????????????7.63?????????3???????
??3?????????7.63×1.42??10.83?
???塢?????′??????
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??0.31??0.24??0.06??×2??1.22
??????????÷????1.3m??????????
???????????????1.3÷2??0.65
?????????????????0.5??0.31??0.06??×2??0.04??1.78
???????S??1.78×0.65??1.157
??????????1.157×7.63??8.83?
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