<?php
header('Content-Type: text/html; charset=utf-8');
define ('ROOT', $_SERVER['DOCUMENT_ROOT']);
include ROOT.'/assets/php/head.php';

$tit= '計算鋼筋重量已知直徑和長度';
// 直徑12，長度120
$val='12 120';
$img='';

//呼叫方法
mill($val,$img,$tit);
//mill 是磨粉機的方法
function mill($val,$img,$tit){
    //初始化
    include ROOT.'/assets/php/init.php';
    imgt($img,$tit);

    //設定小數點保留位數 
    bcscale (3);
    //$pi = round(pi(),2);

     //以空格分割成數值
    $vals = expl($val);
    $d = evev($vals[0]);
    $l = evev($vals[1]);

    //已知條件
    $know = array();
    array_push($know, $val);
    $v0 = eveq($vals[0]);
    array_push($know, "鋼筋的直徑：$v0{$unit['mm']}");
    $v1 = eveq($vals[1]);
    array_push($know, "長度：$v1{$unit['m']}");

    //計算步驟
    $step = array();
    array_push($step, "計算鋼筋重量：");
    array_push($step, "{$math['eq']} 0.00617{$math['mul']}$d{$math['sup2']}{$math['mul']}$l");
    $dd = bcmul($d, $d);
    array_push($step, "{$math['eq']} 0.00617{$math['mul']}$dd{$math['mul']}$l");
    $dd617 = 0.00617*$dd;
    array_push($step, "{$math['eq']} $dd617{$math['mul']}$l");
    $W = bcmul($dd617, $l);
    array_push($step, "{$math['eq']} $W");

    //算出結果
    $ends = array();
    array_push($ends, "鋼筋重量：$W{$unit['kg']}");

    //公式表示
    $home = array();
    array_push($home, "鋼筋重量：W{$math['eq']}0.00617{$math['mul']}d{$math['sup2']}{$math['mul']}l");

    //公式說明
    $info = array();
    array_push($info, "鋼筋重量 {$math['eq']} 0.00617 {$math['mul']} 鋼筋直徑{$unit['mm']} {$math['mul']} 鋼筋直徑{$unit['mm']} {$math['mul']} 鋼筋長度{$unit['m']}。");

    //表格列表
    $tdli = array();
    array_push($tdli, "直徑{$unit['mm']}{$labe['td']}鋼筋比重{$unit['kg']}{$math['sol']}{$unit['m']}");
    array_push($tdli, "{$buil['phi']}8{$labe['td']}0.395");
    array_push($tdli, "{$buil['phi']}10{$labe['td']}0.617");
    array_push($tdli, "{$buil['phi']}12{$labe['td']}0.888");
    array_push($tdli, "{$buil['phi']}14{$labe['td']}1.209");
    array_push($tdli, "{$buil['phi']}16{$labe['td']}1.58");
    array_push($tdli, "{$buil['phi']}18{$labe['td']}1.999");
    array_push($tdli, "{$buil['phi']}20{$labe['td']}2.468");
    array_push($tdli, "{$buil['phi']}22{$labe['td']}2.986");

    know($know);
    ends($ends);
    home($home);
    step($step);
    info($info);
    tdli($tdli,$html =!true);
}
?>
<?php include ROOT.'/assets/php/foot.php';
//查改樣式
$chck = array();
chck($chck);
?>