H & O Engineering, D.P.C.
Long Island City,
New York
View Accreditation Certificate
Santiago
Helman
36-52 37th Street
Long Island City
,
New York
11101
Phone: (347) 639-0669
Fax:
santiago@hando-eng.com
http://www.handoeng.com
Quality Management System - accredited since 1/24/2019
R18, C1077 (Concrete), E329 (Concrete)
Concrete - accredited since 1/24/2019
C31 (Cylinders), C39, C138, C143, C172, C173, C231, C511, C617 (11000 psi and below), C1064, C1231 (7000 psi and below)
Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.
* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.
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