Phindu la fiberglass yooneka ngati H ndi gawo lazachuma komanso mbiri yabwino kwambiri yogawa bwino magawo osiyanasiyana komanso chiwongolero champhamvu ndi kulemera. Amatchulidwa chifukwa chodutsana ndi chilembo cha Chingerezi "H". Popeza mbali zonse za mtengo wa fiberglass wooneka ngati H zimakonzedwa molunjika, mtengo wa fiberglass wooneka ngati H uli ndi ubwino wokhotakhota mwamphamvu kumbali zonse, kumanga kosavuta, kupulumutsa mtengo ndi kulemera kwapangidwe, ndipo kwagwiritsidwa ntchito kwambiri.
Mbiri yazachuma yokhala ndi mawonekedwe ophatikizika ofanana ndi chilembo chachikulu cha Chilatini H, chomwe chimatchedwanso mtanda wa fiberglass wapadziko lonse lapansi, m'mphepete mwake (m'mphepete) I-beam kapena parallel flange I-beam. Gawo la mtanda la mtengo wa fiberglass wooneka ngati H nthawi zambiri limaphatikizapo magawo awiri: ukonde ndi mbale ya flange, yomwe imadziwikanso kuti chiuno ndi m'mphepete.
Mbali zamkati ndi zakunja za flanges zamtundu wa H-woboola pakati wa fiberglass mtengo amafanana kapena kuyandikira kufananiza, ndipo malekezero a flange ali pa ngodya zolondola, chifukwa chake dzina lofananira flange I-beam. Makulidwe a intaneti a mtengo wa fiberglass wooneka ngati H ndi wocheperako kuposa wamba wa I-mitanda wokhala ndi kutalika kwa ukonde womwewo, ndipo m'lifupi mwake ndi wamkulu kuposa wamba wa I-mitanda wokhala ndi ukonde womwewo kutalika, motero amatchedwanso wide- m'mphepete I-mtengo. Kutengera mawonekedwe ake, gawo modulus, mphindi ya inertia ndi mphamvu yofananira ya H-woboola pakati fiberglass mtanda ndi bwino kwambiri kuposa wamba I-mitengo yolemera unit.
