Title
Construction Regulations and Seismic Design Criteria of Subway Tunnel: Construction Regulations with Focusing on Seismic Design ,Used
Delivery time: 8-12 business days (International)
Construction of a tunnel is made by successive operations which must be good connected: striking down, mucking out, temporary supporting, final covering, finishing. The performance of a tunnel basically depends on the ground nature, underground condition, and overburden load. For economic reasons, transportation, communications and others purposes tunnel is boring with the largest section (fullface boring, boring with the shield, boring with the tunnel constraction such as TBM, NATM and Cut & Cover methods).The development in urban areas can be included the construction of shallow tunnels in soft or hard soils and rocks. The construction of tunnels in shallow depth causes the ground to displace. Monitoring in the before and after construction the project are used for controlling the stability of structures. In all methods of tunneling the maximum amount of the rock mass overburden loads are loaded and the distribution of forces are exit from the first condition, with having knowledge on the rock physical parameters can help to the tunnel designers.
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⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
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