Steel Rebar Weight Calculator
.rebar-calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e1e1e1;
border-radius: 12px;
background-color: #ffffff;
box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
.rebar-calc-header {
text-align: center;
margin-bottom: 30px;
}
.rebar-calc-header h2 {
color: #2c3e50;
margin-bottom: 10px;
}
.rebar-calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin-bottom: 25px;
}
.rebar-input-group {
display: flex;
flex-direction: column;
}
.rebar-input-group label {
font-weight: 600;
margin-bottom: 8px;
color: #34495e;
font-size: 14px;
}
.rebar-input-group input, .rebar-input-group select {
padding: 12px;
border: 2px solid #edeff2;
border-radius: 6px;
font-size: 16px;
transition: border-color 0.3s;
}
.rebar-input-group input:focus {
border-color: #3498db;
outline: none;
}
.rebar-calc-btn {
grid-column: span 2;
background-color: #27ae60;
color: white;
border: none;
padding: 15px;
font-size: 18px;
font-weight: bold;
border-radius: 6px;
cursor: pointer;
transition: background-color 0.3s;
}
.rebar-calc-btn:hover {
background-color: #219150;
}
.rebar-result-box {
margin-top: 25px;
padding: 20px;
background-color: #f8f9fa;
border-radius: 8px;
border-left: 5px solid #27ae60;
display: none;
}
.rebar-result-item {
display: flex;
justify-content: space-between;
margin-bottom: 10px;
font-size: 16px;
}
.rebar-result-value {
font-weight: bold;
color: #2c3e50;
}
.rebar-article {
margin-top: 40px;
line-height: 1.6;
color: #444;
}
.rebar-article h3 {
color: #2c3e50;
border-bottom: 2px solid #eee;
padding-bottom: 10px;
}
.rebar-table {
width: 100%;
border-collapse: collapse;
margin: 20px 0;
}
.rebar-table th, .rebar-table td {
border: 1px solid #ddd;
padding: 12px;
text-align: center;
}
.rebar-table th {
background-color: #f2f2f2;
}
@media (max-width: 600px) {
.rebar-calc-grid {
grid-template-columns: 1fr;
}
.rebar-calc-btn {
grid-column: 1;
}
}
function calculateRebarWeight() {
var dia = parseFloat(document.getElementById('rebarDia').value);
var len = parseFloat(document.getElementById('rebarLen').value);
var qty = parseFloat(document.getElementById('rebarQty').value);
var price = parseFloat(document.getElementById('steelPrice').value);
var resultBox = document.getElementById('rebarResultBox');
var unitWeightRes = document.getElementById('unitWeightResult');
var totalKgRes = document.getElementById('totalWeightKg');
var totalTonRes = document.getElementById('totalWeightTon');
var costRow = document.getElementById('costResultRow');
var costValue = document.getElementById('totalCost');
if (isNaN(dia) || isNaN(len) || isNaN(qty) || dia <= 0 || len <= 0 || qty 0) {
var totalCostVal = totalWeight * price;
costValue.innerHTML = totalCostVal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
costRow.style.display = 'flex';
} else {
costRow.style.display = 'none';
}
resultBox.style.display = 'block';
resultBox.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}