What services does mayes testing engineers provide? We provide structural inspection and material testing required by local building codes. Services include: Mayes Testing Engineers, Inc. is approved by the Washington Association of Building Officials (WABO). Our laboratories are A2LA Accredited and WSDOT validated. What is an “apogee”?Is maymayes a2la accredited? Mayes Testing Engineers, Inc. is approved by the Washington Association of Building Officials (WABO). Our laboratories are A2LA Accredited and WSDOT validated. What is an “apogee”? It is defined as a highest point or culmination.Why choose john mayes engineers? John Mayes Engineers are an I.M.L. approved distributor of forged tees, elbows, unions and outlets. Over the last 40 years we have developed a strong relationship with the highly respected Italian drop forger and we hold a large range of fittings in stock ready to meet your needs.Who are mayes and what do they do? Basket Checkout. Mayes are UK manufacturers and suppliers of industrial forged pipe fittings, forged tees, elbows, couplings, caps, unions & bespoke forgings.